+2000-03-02 Akim Demaille <akim@epita.fr>
+
+ * acspecific.m4: Move some macros to a better place.
+
2000-03-02 Akim Demaille <akim@epita.fr>
Internal macros are named `_AC_'.
esac
fi])])
+
# AC_PROG_MAKE_SET
# ----------------
# Define SET_MAKE to set ${MAKE} if make doesn't.
SET_MAKE="MAKE=${MAKE-make}"
fi
AC_SUBST([SET_MAKE])dnl
-])
+])# AC_PROG_MAKE_SET
+
AC_DEFUN(AC_PROG_RANLIB,
[AC_CHECK_PROG(RANLIB, ranlib, ranlib, :)])
-dnl Check for mawk first since it's generally faster.
+
+# Check for mawk first since it's generally faster.
AC_DEFUN(AC_PROG_AWK,
[AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )])
-
-
-
## ------------------------- ##
-## Checks for header files. ##
+## Checks for declarations. ##
## ------------------------- ##
-# AC_HEADER_STDC
-# --------------
-AC_DEFUN(AC_HEADER_STDC,
-[AC_REQUIRE_CPP()dnl
-AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
-[AC_TRY_CPP([#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <float.h>
-], ac_cv_header_stdc=yes, ac_cv_header_stdc=no)
-
-if test $ac_cv_header_stdc = yes; then
- # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
-AC_EGREP_HEADER(memchr, string.h, , ac_cv_header_stdc=no)
-fi
-
-if test $ac_cv_header_stdc = yes; then
- # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
-AC_EGREP_HEADER(free, stdlib.h, , ac_cv_header_stdc=no)
-fi
-
-if test $ac_cv_header_stdc = yes; then
- # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
-AC_TRY_RUN(
-[#include <ctype.h>
-#if ((' ' & 0x0FF) == 0x020)
-# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
-# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
-#else
-# define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \
- || ('j' <= (c) && (c) <= 'r') \
- || ('s' <= (c) && (c) <= 'z'))
-# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+# AC_DECL_SYS_SIGLIST
+# -------------------
+AC_DEFUN(AC_DECL_SYS_SIGLIST,
+[AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h],
+ ac_cv_decl_sys_siglist,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <signal.h>
+/* NetBSD declares sys_siglist in unistd.h. */
+#if HAVE_UNISTD_H
+# include <unistd.h>
#endif
-
-#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
-int
-main ()
-{
- int i;
- for (i = 0; i < 256; i++)
- if (XOR (islower (i), ISLOWER (i))
- || toupper (i) != TOUPPER (i))
- exit(2);
- exit (0);
-}], , ac_cv_header_stdc=no, :)
-fi])
-if test $ac_cv_header_stdc = yes; then
- AC_DEFINE(STDC_HEADERS, 1, [Define if you have the ANSI C header files.])
+], [char *msg = *(sys_siglist + 1);],
+ ac_cv_decl_sys_siglist=yes, ac_cv_decl_sys_siglist=no)])
+if test $ac_cv_decl_sys_siglist = yes; then
+ AC_DEFINE(SYS_SIGLIST_DECLARED, 1,
+ [Define if `sys_siglist' is declared by <signal.h> or <unistd.h>.])
fi
-])# AC_HEADER_STDC
+])# AC_DECL_SYS_SIGLIST
-# AC_HEADER_MAJOR
-# ---------------
-AC_DEFUN(AC_HEADER_MAJOR,
-[AC_CACHE_CHECK(whether sys/types.h defines makedev,
- ac_cv_header_sys_types_h_makedev,
-[AC_TRY_LINK([#include <sys/types.h>
-], [return makedev(0, 0);],
- ac_cv_header_sys_types_h_makedev=yes, ac_cv_header_sys_types_h_makedev=no)
-])
-if test $ac_cv_header_sys_types_h_makedev = no; then
-AC_CHECK_HEADER(sys/mkdev.h,
- [AC_DEFINE(MAJOR_IN_MKDEV, 1,
- [Define if `major', `minor', and `makedev' are
- declared in <mkdev.h>.])])
- if test $ac_cv_header_sys_mkdev_h = no; then
- AC_CHECK_HEADER(sys/sysmacros.h,
- [AC_DEFINE(MAJOR_IN_SYSMACROS, 1,
- [Define if `major', `minor', and `makedev' are
- declared in <sysmacros.h>.])])
- fi
-fi
-])# AC_HEADER_MAJOR
+## ------------------------- ##
+## Checks for header files. ##
+## ------------------------- ##
# _AC_CHECK_HEADER_DIRENT(HEADER-FILE, ACTION-IF-FOUND)
])# AC_HEADER_DIRENT
+# AC_HEADER_MAJOR
+# ---------------
+AC_DEFUN(AC_HEADER_MAJOR,
+[AC_CACHE_CHECK(whether sys/types.h defines makedev,
+ ac_cv_header_sys_types_h_makedev,
+[AC_TRY_LINK([#include <sys/types.h>
+], [return makedev(0, 0);],
+ ac_cv_header_sys_types_h_makedev=yes, ac_cv_header_sys_types_h_makedev=no)
+])
+
+if test $ac_cv_header_sys_types_h_makedev = no; then
+AC_CHECK_HEADER(sys/mkdev.h,
+ [AC_DEFINE(MAJOR_IN_MKDEV, 1,
+ [Define if `major', `minor', and `makedev' are
+ declared in <mkdev.h>.])])
+
+ if test $ac_cv_header_sys_mkdev_h = no; then
+ AC_CHECK_HEADER(sys/sysmacros.h,
+ [AC_DEFINE(MAJOR_IN_SYSMACROS, 1,
+ [Define if `major', `minor', and `makedev' are
+ declared in <sysmacros.h>.])])
+ fi
+fi
+])# AC_HEADER_MAJOR
+
+
# AC_HEADER_STAT
# --------------
# FIXME: Shouldn't this be named AC_HEADER_SYS_STAT?
])# AC_HEADER_STAT
-# AC_DECL_SYS_SIGLIST
-# -------------------
-AC_DEFUN(AC_DECL_SYS_SIGLIST,
-[AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h],
- ac_cv_decl_sys_siglist,
-[AC_TRY_COMPILE([#include <sys/types.h>
-#include <signal.h>
-/* NetBSD declares sys_siglist in unistd.h. */
-#if HAVE_UNISTD_H
-# include <unistd.h>
+# AC_HEADER_STDC
+# --------------
+AC_DEFUN(AC_HEADER_STDC,
+[AC_REQUIRE_CPP()dnl
+AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
+[AC_TRY_CPP([#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+], ac_cv_header_stdc=yes, ac_cv_header_stdc=no)
+
+if test $ac_cv_header_stdc = yes; then
+ # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+AC_EGREP_HEADER(memchr, string.h, , ac_cv_header_stdc=no)
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+AC_EGREP_HEADER(free, stdlib.h, , ac_cv_header_stdc=no)
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+AC_TRY_RUN(
+[#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \
+ || ('j' <= (c) && (c) <= 'r') \
+ || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
#endif
-], [char *msg = *(sys_siglist + 1);],
- ac_cv_decl_sys_siglist=yes, ac_cv_decl_sys_siglist=no)])
-if test $ac_cv_decl_sys_siglist = yes; then
- AC_DEFINE(SYS_SIGLIST_DECLARED, 1,
- [Define if `sys_siglist' is declared by <signal.h> or <unistd.h>.])
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+ int i;
+ for (i = 0; i < 256; i++)
+ if (XOR (islower (i), ISLOWER (i))
+ || toupper (i) != TOUPPER (i))
+ exit(2);
+ exit (0);
+}], , ac_cv_header_stdc=no, :)
+fi])
+if test $ac_cv_header_stdc = yes; then
+ AC_DEFINE(STDC_HEADERS, 1, [Define if you have the ANSI C header files.])
fi
-])# AC_DECL_SYS_SIGLIST
+])# AC_HEADER_STDC
# AC_HEADER_SYS_WAIT
])# AC_HEADER_SYS_WAIT
+# AC_HEADER_TIME
+# --------------
+AC_DEFUN(AC_HEADER_TIME,
+[AC_CACHE_CHECK([whether time.h and sys/time.h may both be included],
+ ac_cv_header_time,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/time.h>
+#include <time.h>
+],
+[struct tm *tp;], ac_cv_header_time=yes, ac_cv_header_time=no)])
+if test $ac_cv_header_time = yes; then
+ AC_DEFINE(TIME_WITH_SYS_TIME, 1,
+ [Define if you can safely include both <sys/time.h> and <time.h>.])
+fi
+])# AC_HEADER_TIME
+
+
+
+
# A few hasbeen'd macros.
AC_DEFUNCT(AC_UNISTD_H, [; instead use AC_CHECK_HEADERS(unistd.h)])
## ---------------------- ##
-# AC_FUNC_CLOSEDIR_VOID
-# ---------------------
-# Check whether closedir returns void, and #define CLOSEDIR_VOID in
-# that case.
-AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
-[AC_REQUIRE([AC_HEADER_DIRENT])dnl
-AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
-[AC_TRY_RUN(
-[#include <sys/types.h>
-#include <$ac_header_dirent>
-
-int closedir ();
-int
-main ()
-{
- exit (closedir (opendir (".")) != 0);
-}],
- ac_cv_func_closedir_void=no,
- ac_cv_func_closedir_void=yes,
- ac_cv_func_closedir_void=yes)])
-if test $ac_cv_func_closedir_void = yes; then
- AC_DEFINE(CLOSEDIR_VOID, 1,
- [Define if the `closedir' function returns void instead of `int'.])
+# AC_FUNC_ALLOCA
+# --------------
+AC_DEFUN(AC_FUNC_ALLOCA,
+[AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally.
+# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
+# for constant arguments. Useless!
+AC_CACHE_CHECK([for working alloca.h], ac_cv_working_alloca_h,
+[AC_TRY_LINK([#include <alloca.h>], [char *p = alloca(2 * sizeof(int));],
+ ac_cv_working_alloca_h=yes, ac_cv_working_alloca_h=no)])
+if test $ac_cv_working_alloca_h = yes; then
+ AC_DEFINE(HAVE_ALLOCA_H, 1,
+ [Define if you have <alloca.h> and it should be used
+ (not on Ultrix).])
fi
-])
-
-# AC_FUNC_FNMATCH
-# ---------------
-# We look for fnmatch.h to avoid that the test fails in C++.
-AC_DEFUN(AC_FUNC_FNMATCH,
-[AC_CHECK_HEADERS(fnmatch.h)
-AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works,
-# Some versions of Solaris or SCO have a broken fnmatch function.
-# So we run a test program. If we are cross-compiling, take no chance.
-# Thanks to John Oleynick and Franc,ois Pinard for this test.
-[AC_TRY_RUN(
+AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works,
+[AC_TRY_LINK(
+[#ifdef __GNUC__
+# define alloca __builtin_alloca
+#else
+# ifdef _MSC_VER
+# include <malloc.h>
+# define alloca _alloca
+# else
+# if HAVE_ALLOCA_H
+# include <alloca.h>
+# else
+# ifdef _AIX
+ #pragma alloca
+# else
+# ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+# endif
+# endif
+# endif
+# endif
+#endif
+], [char *p = (char *) alloca(1);],
+ ac_cv_func_alloca_works=yes, ac_cv_func_alloca_works=no)])
+if test $ac_cv_func_alloca_works = yes; then
+ AC_DEFINE(HAVE_ALLOCA, 1,
+ [Define if you have `alloca', as a function or macro.])
+fi
+
+if test $ac_cv_func_alloca_works = no; then
+ # The SVR3 libPW and SVR4 libucb both contain incompatible functions
+ # that cause trouble. Some versions do not even contain alloca or
+ # contain a buggy version. If you still want to use their alloca,
+ # use ar to extract alloca.o from them instead of compiling alloca.c.
+ ALLOCA=alloca.${ac_objext}
+ AC_DEFINE(C_ALLOCA, 1, [Define if using `alloca.c'.])
+
+AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
+[AC_EGREP_CPP(webecray,
+[#if defined(CRAY) && ! defined(CRAY2)
+webecray
+#else
+wenotbecray
+#endif
+], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
+if test $ac_cv_os_cray = yes; then
+for ac_func in _getb67 GETB67 getb67; do
+ AC_CHECK_FUNC($ac_func,
+ [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func,
+ [Define to one of _getb67, GETB67, getb67
+ for Cray-2 and Cray-YMP systems.
+ This function is required for alloca.c
+ support on those systems.])
+ break])
+done
+fi
+
+AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
+[AC_TRY_RUN(
+[find_stack_direction ()
+{
+ static char *addr = 0;
+ auto char dummy;
+ if (addr == 0)
+ {
+ addr = &dummy;
+ return find_stack_direction ();
+ }
+ else
+ return (&dummy > addr) ? 1 : -1;
+}
+
+int
+main ()
+{
+ exit (find_stack_direction () < 0);
+}], ac_cv_c_stack_direction=1, ac_cv_c_stack_direction=-1,
+ ac_cv_c_stack_direction=0)])
+AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
+fi
+AC_SUBST(ALLOCA)dnl
+])# AC_FUNC_ALLOCA
+
+
+# AC_FUNC_CLOSEDIR_VOID
+# ---------------------
+# Check whether closedir returns void, and #define CLOSEDIR_VOID in
+# that case.
+AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
+[AC_REQUIRE([AC_HEADER_DIRENT])dnl
+AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
+[AC_TRY_RUN(
+[#include <sys/types.h>
+#include <$ac_header_dirent>
+
+int closedir ();
+int
+main ()
+{
+ exit (closedir (opendir (".")) != 0);
+}],
+ ac_cv_func_closedir_void=no,
+ ac_cv_func_closedir_void=yes,
+ ac_cv_func_closedir_void=yes)])
+if test $ac_cv_func_closedir_void = yes; then
+ AC_DEFINE(CLOSEDIR_VOID, 1,
+ [Define if the `closedir' function returns void instead of `int'.])
+fi
+])
+
+
+# AC_FUNC_FNMATCH
+# ---------------
+# We look for fnmatch.h to avoid that the test fails in C++.
+AC_DEFUN(AC_FUNC_FNMATCH,
+[AC_CHECK_HEADERS(fnmatch.h)
+AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works,
+# Some versions of Solaris or SCO have a broken fnmatch function.
+# So we run a test program. If we are cross-compiling, take no chance.
+# Thanks to John Oleynick and Franc,ois Pinard for this test.
+[AC_TRY_RUN(
[#if HAVE_FNMATCH_H
# include <fnmatch.h>
#endif
])# AC_FUNC_FNMATCH
-# AC_FUNC_MMAP
-# ------------
-AC_DEFUN(AC_FUNC_MMAP,
-[AC_CHECK_HEADERS(unistd.h)
-AC_CHECK_FUNCS(getpagesize)
-AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
-[AC_TRY_RUN(
-[/* Thanks to Mike Haertel and Jim Avera for this test.
- Here is a matrix of mmap possibilities:
- mmap private not fixed
- mmap private fixed at somewhere currently unmapped
- mmap private fixed at somewhere already mapped
- mmap shared not fixed
- mmap shared fixed at somewhere currently unmapped
- mmap shared fixed at somewhere already mapped
- For private mappings, we should verify that changes cannot be read()
- back from the file, nor mmap's back from the file at a different
- address. (There have been systems where private was not correctly
- implemented like the infamous i386 svr4.0, and systems where the
- VM page cache was not coherent with the file system buffer cache
- like early versions of FreeBSD and possibly contemporary NetBSD.)
- For shared mappings, we should conversely verify that changes get
- propogated back to all the places they're supposed to be.
-
- Grep wants private fixed already mapped.
- The main things grep needs to know about mmap are:
- * does it exist and is it safe to write into the mmap'd area
- * how to use it (BSD variants) */
-#include <sys/types.h>
-#include <fcntl.h>
-#include <sys/mman.h>
+# AC_FUNC_GETLOADAVG
+# ------------------
+AC_DEFUN(AC_FUNC_GETLOADAVG,
+[ac_have_func=no # yes means we've found a way to get the load average.
-/* This mess was copied from the GNU getpagesize.h. */
-#if !HAVE_GETPAGESIZE
-# if HAVE_UNISTD_H
-# include <unistd.h>
-# endif
+# Some systems with -lutil have (and need) -lkvm as well, some do not.
+# On Solaris, -lkvm requires nlist from -lelf, so check that first
+# to get the right answer into the cache.
+AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
+AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
+AC_CHECK_LIB(kstat, kstat_open)
+# Check for the 4.4BSD definition of getloadavg.
+AC_CHECK_LIB(util, getloadavg,
+ [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
-/* Assume that all systems that can run configure have sys/param.h. */
-# if !HAVE_SYS_PARAM_H
-# define HAVE_SYS_PARAM_H 1
-# endif
+if test $ac_have_func = no; then
+ # There is a commonly available library for RS/6000 AIX.
+ # Since it is not a standard part of AIX, it might be installed locally.
+ ac_getloadavg_LIBS="$LIBS"; LIBS="-L/usr/local/lib $LIBS"
+ AC_CHECK_LIB(getloadavg, getloadavg,
+ LIBS="-lgetloadavg $LIBS", LIBS="$ac_getloadavg_LIBS")
+fi
-# ifdef _SC_PAGESIZE
-# define getpagesize() sysconf(_SC_PAGESIZE)
-# else /* no _SC_PAGESIZE */
-# if HAVE_SYS_PARAM_H
-# include <sys/param.h>
-# ifdef EXEC_PAGESIZE
-# define getpagesize() EXEC_PAGESIZE
-# else /* no EXEC_PAGESIZE */
-# ifdef NBPG
-# define getpagesize() NBPG * CLSIZE
-# ifndef CLSIZE
-# define CLSIZE 1
-# endif /* no CLSIZE */
-# else /* no NBPG */
-# ifdef NBPC
-# define getpagesize() NBPC
-# else /* no NBPC */
-# ifdef PAGESIZE
-# define getpagesize() PAGESIZE
-# endif /* PAGESIZE */
-# endif /* no NBPC */
-# endif /* no NBPG */
-# endif /* no EXEC_PAGESIZE */
-# else /* no HAVE_SYS_PARAM_H */
-# define getpagesize() 8192 /* punt totally */
-# endif /* no HAVE_SYS_PARAM_H */
-# endif /* no _SC_PAGESIZE */
+# Make sure it is really in the library, if we think we found it.
+AC_REPLACE_FUNCS(getloadavg)
-#endif /* no HAVE_GETPAGESIZE */
+if test $ac_cv_func_getloadavg = yes; then
+ AC_DEFINE(HAVE_GETLOADAVG, 1,
+ [Define if your system has its own `getloadavg' function.])
+ ac_have_func=yes
+else
+ # Figure out what our getloadavg.c needs.
+ ac_have_func=no
+ AC_CHECK_HEADER(sys/dg_sys_info.h,
+ [ac_have_func=yes;
+ AC_DEFINE(DGUX, 1, [Define for DGUX with <sys/dg_sys_info.h>.])
+ AC_CHECK_LIB(dgc, dg_sys_info)])
-#ifdef __cplusplus
-extern "C" { void *malloc(unsigned); }
-#else
-char *malloc();
-#endif
+ # We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
+ # uses stabs), but it is still SVR4. We cannot check for <elf.h> because
+ # Irix 4.0.5F has the header but not the library.
+ if test $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then
+ ac_have_func=yes;
+ AC_DEFINE(SVR4, 1,
+ [Define on System V Release 4.])
+ fi
-int
-main ()
-{
- char *data, *data2, *data3;
- int i, pagesize;
- int fd;
+ if test $ac_have_func = no; then
+ AC_CHECK_HEADER(inq_stats/cpustats.h,
+ [ac_have_func=yes;
+ AC_DEFINE(UMAX, 1,
+ [Define for Encore UMAX.])
+ AC_DEFINE(UMAX4_3, 1,
+ [Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+ instead of <sys/cpustats.h>.])])
+ fi
- pagesize = getpagesize ();
+ if test $ac_have_func = no; then
+ AC_CHECK_HEADER(sys/cpustats.h,
+ [ac_have_func=yes; AC_DEFINE(UMAX)])
+ fi
- /* First, make a file with some known garbage in it. */
- data = malloc (pagesize);
- if (!data)
- exit (1);
- for (i = 0; i < pagesize; ++i)
- *(data + i) = rand ();
- umask (0);
- fd = creat ("conftestmmap", 0600);
- if (fd < 0)
- exit (1);
- if (write (fd, data, pagesize) != pagesize)
- exit (1);
- close (fd);
+ if test $ac_have_func = no; then
+ AC_CHECK_HEADERS(mach/mach.h)
+ fi
- /* Next, try to mmap the file at a fixed address which already has
- something else allocated at it. If we can, also make sure that
- we see the same garbage. */
- fd = open ("conftestmmap", O_RDWR);
- if (fd < 0)
- exit (1);
- data2 = malloc (2 * pagesize);
- if (!data2)
- exit (1);
- data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
- if (data2 != mmap (data2, pagesize, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_FIXED, fd, 0L))
- exit (1);
- for (i = 0; i < pagesize; ++i)
- if (*(data + i) != *(data2 + i))
- exit (1);
+ AC_CHECK_HEADER(nlist.h,
+ [AC_DEFINE(NLIST_STRUCT, 1, [Define if you have <nlist.h>.])
+ AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un,
+ [AC_TRY_COMPILE([#include <nlist.h>
+],
+ [struct nlist n; n.n_un.n_name = 0;],
+ ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)])
+ if test $ac_cv_struct_nlist_n_un = yes; then
+ AC_DEFINE(NLIST_NAME_UNION, 1,
+ [Define if your `struct nlist' has an `n_un' member.])
+ fi
+ ])dnl
+fi # Do not have getloadavg in system libraries.
- /* Finally, make sure that changes to the mapped area do not
- percolate back to the file as seen by read(). (This is a bug on
- some variants of i386 svr4.0.) */
- for (i = 0; i < pagesize; ++i)
- *(data2 + i) = *(data2 + i) + 1;
- data3 = malloc (pagesize);
- if (!data3)
- exit (1);
- if (read (fd, data3, pagesize) != pagesize)
- exit (1);
- for (i = 0; i < pagesize; ++i)
- if (*(data + i) != *(data3 + i))
- exit (1);
- close (fd);
- unlink ("conftestmmap");
- exit (0);
-}], ac_cv_func_mmap_fixed_mapped=yes, ac_cv_func_mmap_fixed_mapped=no,
-ac_cv_func_mmap_fixed_mapped=no)])
-if test $ac_cv_func_mmap_fixed_mapped = yes; then
- AC_DEFINE(HAVE_MMAP, 1,
- [Define if you have a working `mmap' system call.])
+# Some definitions of getloadavg require that the program be installed setgid.
+dnl FIXME: Don't hardwire the path of getloadavg.c in the top-level directory.
+AC_CACHE_CHECK(whether getloadavg requires setgid,
+ ac_cv_func_getloadavg_setgid,
+[AC_EGREP_CPP([Yowza Am I SETGID yet],
+[#include "$srcdir/getloadavg.c"
+#ifdef LDAV_PRIVILEGED
+Yowza Am I SETGID yet
+#endif],
+ ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)])
+if test $ac_cv_func_getloadavg_setgid = yes; then
+ NEED_SETGID=true;
+ AC_DEFINE(GETLOADAVG_PRIVILEGED, 1,
+ [Define if the `getloadavg' function needs to be run setuid
+ or setgid.])
+else
+ NEED_SETGID=false
fi
-])# AC_FUNC_MMAP
+AC_SUBST(NEED_SETGID)dnl
+
+if test $ac_cv_func_getloadavg_setgid = yes; then
+ AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
+[ # On Solaris, /dev/kmem is a symlink. Get info on the real file.
+ ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
+ # If we got an error (system does not support symlinks), try without -L.
+ test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
+ ac_cv_group_kmem=`echo $ac_ls_output \
+ | sed -ne ['s/[ ][ ]*/ /g;
+ s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/;
+ / /s/.* //;p;']`
+])
+ KMEM_GROUP=$ac_cv_group_kmem
+fi
+AC_SUBST(KMEM_GROUP)dnl
+])# AC_FUNC_GETLOADAVG
+
+
+# AC_FUNC_GETMNTENT
+# -----------------
+AC_DEFUN(AC_FUNC_GETMNTENT,
+[# getmntent is in -lsun on Irix 4, -lseq on Dynix/PTX, -lgen on Unixware.
+AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS",
+ [AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS",
+ [AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])])
+AC_CHECK_FUNC(getmntent,
+ [AC_DEFINE(HAVE_GETMNTENT, 1,
+ [Define if you have the `getmntent' function.])])])
# AC_FUNC_GETPGRP
])# AC_FUNC_GETPGRP
-# AC_FUNC_SETPGRP
-# ---------------
-AC_DEFUN(AC_FUNC_SETPGRP,
-[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
-AC_TRY_RUN(
-[#if HAVE_UNISTD_H
-# include <unistd.h>
+# AC_FUNC_MKTIME
+# --------------
+AC_DEFUN(AC_FUNC_MKTIME,
+[AC_REQUIRE([AC_HEADER_TIME])dnl
+AC_CHECK_HEADERS(sys/time.h unistd.h)
+AC_CHECK_FUNCS(alarm)
+AC_CACHE_CHECK([for working mktime], ac_cv_func_working_mktime,
+[AC_TRY_RUN(
+[/* Test program from Paul Eggert and Tony Leneis. */
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
#endif
-/* If this system has a BSD-style setpgrp, which takes arguments, exit
- successfully. */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
-int
-main ()
-{
- if (setpgrp (1,1) == -1)
- exit (0);
- else
- exit (1);
-}], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes,
- AC_MSG_ERROR(cannot check setpgrp if cross compiling))
-)
-if test $ac_cv_func_setpgrp_void = yes; then
- AC_DEFINE(SETPGRP_VOID, 1,
- [Define if the `setpgrp' function takes no argument.])
-fi
-])# AC_FUNC_SETPGRP
+#if !HAVE_ALARM
+# define alarm(X) /* empty */
+#endif
+/* Work around redefinition to rpl_putenv by other config tests. */
+#undef putenv
-# AC_FUNC_VPRINTF
-# ---------------
-# Why the heck is that _doprnt does not define HAVE__DOPRNT???
-# That the logical name! In addition, why doesn't it use
-# AC_CHECK_FUNCS(vprintf)? Because old Autoconf uses sh for loops.
-# FIXME: To be changed in Autoconf 3?
-AC_DEFUN(AC_FUNC_VPRINTF,
-[AC_CHECK_FUNC(vprintf,
- AC_DEFINE(HAVE_VPRINTF, 1,
- [Define if you have the `vprintf' function.]))
-if test "$ac_cv_func_vprintf" != yes; then
-AC_CHECK_FUNC(_doprnt,
- AC_DEFINE(HAVE_DOPRNT, 1,
- [Define if you don't have `vprintf' but do have
- `_doprnt.']))
-fi
-])
+static time_t time_t_max;
+/* Values we'll use to set the TZ environment variable. */
+static const char *const tz_strings[] = {
+ (const char *) 0, "TZ=GMT0", "TZ=JST-9",
+ "TZ=EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00"
+};
+#define N_STRINGS (sizeof (tz_strings) / sizeof (tz_strings[0]))
-# AC_FUNC_VFORK
-# -------------
-AC_DEFUN(AC_FUNC_VFORK,
-[AC_REQUIRE([AC_TYPE_PID_T])dnl
-AC_CHECK_HEADER(vfork.h,
- AC_DEFINE(HAVE_VFORK_H, 1,
- [Define if you have <vfork.h>.]))
-AC_CACHE_CHECK(for working vfork, ac_cv_func_vfork_works,
-[AC_TRY_RUN([/* Thanks to Paul Eggert for this test. */
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-#if HAVE_VFORK_H
-# include <vfork.h>
-#endif
-/* On some sparc systems, changes by the child to local and incoming
- argument registers are propagated back to the parent. The compiler
- is told about this with #include <vfork.h>, but some compilers
- (e.g. gcc -O) don't grok <vfork.h>. Test for this by using a
- static variable whose address is put into a register that is
- clobbered by the vfork. */
-static
-#ifdef __cplusplus
-sparc_address_test (int arg)
-# else
-sparc_address_test (arg) int arg;
-#endif
+/* Fail if mktime fails to convert a date in the spring-forward gap.
+ Based on a problem report from Andreas Jaeger. */
+static void
+spring_forward_gap ()
{
- static pid_t child;
- if (!child) {
- child = vfork ();
- if (child < 0) {
- perror ("vfork");
- _exit(2);
- }
- if (!child) {
- arg = getpid();
- write(-1, "", 0);
- _exit (arg);
- }
- }
+ /* glibc (up to about 1998-10-07) failed this test) */
+ struct tm tm;
+
+ /* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0"
+ instead of "TZ=America/Vancouver" in order to detect the bug even
+ on systems that don't support the Olson extension, or don't have the
+ full zoneinfo tables installed. */
+ putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
+
+ tm.tm_year = 98;
+ tm.tm_mon = 3;
+ tm.tm_mday = 5;
+ tm.tm_hour = 2;
+ tm.tm_min = 0;
+ tm.tm_sec = 0;
+ tm.tm_isdst = -1;
+ if (mktime (&tm) == (time_t)-1)
+ exit (1);
}
-int
-main ()
+static void
+mktime_test (now)
+ time_t now;
{
- pid_t parent = getpid ();
- pid_t child;
-
- sparc_address_test ();
+ struct tm *lt;
+ if ((lt = localtime (&now)) && mktime (lt) != now)
+ exit (1);
+ now = time_t_max - now;
+ if ((lt = localtime (&now)) && mktime (lt) != now)
+ exit (1);
+}
- child = vfork ();
+static void
+irix_6_4_bug ()
+{
+ /* Based on code from Ariel Faigon. */
+ struct tm tm;
+ tm.tm_year = 96;
+ tm.tm_mon = 3;
+ tm.tm_mday = 0;
+ tm.tm_hour = 0;
+ tm.tm_min = 0;
+ tm.tm_sec = 0;
+ tm.tm_isdst = -1;
+ mktime (&tm);
+ if (tm.tm_mon != 2 || tm.tm_mday != 31)
+ exit (1);
+}
- if (child == 0) {
- /* Here is another test for sparc vfork register problems. This
- test uses lots of local variables, at least as many local
- variables as main has allocated so far including compiler
- temporaries. 4 locals are enough for gcc 1.40.3 on a Solaris
- 4.1.3 sparc, but we use 8 to be safe. A buggy compiler should
- reuse the register of parent for one of the local variables,
- since it will think that parent can't possibly be used any more
- in this routine. Assigning to the local variable will thus
- munge parent in the parent process. */
- pid_t
- p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
- p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
- /* Convince the compiler that p..p7 are live; otherwise, it might
- use the same hardware register for all 8 local variables. */
- if (p != p1 || p != p2 || p != p3 || p != p4
- || p != p5 || p != p6 || p != p7)
- _exit(1);
+static void
+bigtime_test (j)
+ int j;
+{
+ struct tm tm;
+ time_t now;
+ tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j;
+ now = mktime (&tm);
+ if (now != (time_t) -1)
+ {
+ struct tm *lt = localtime (&now);
+ if (! (lt
+ && lt->tm_year == tm.tm_year
+ && lt->tm_mon == tm.tm_mon
+ && lt->tm_mday == tm.tm_mday
+ && lt->tm_hour == tm.tm_hour
+ && lt->tm_min == tm.tm_min
+ && lt->tm_sec == tm.tm_sec
+ && lt->tm_yday == tm.tm_yday
+ && lt->tm_wday == tm.tm_wday
+ && ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst)
+ == (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst))))
+ exit (1);
+ }
+}
- /* On some systems (e.g. IRIX 3.3), vfork doesn't separate parent
- from child file descriptors. If the child closes a descriptor
- before it execs or exits, this munges the parent's descriptor
- as well. Test for this by closing stdout in the child. */
- _exit(close(fileno(stdout)) != 0);
- } else {
- int status;
- struct stat st;
+int
+main ()
+{
+ time_t t, delta;
+ int i, j;
- while (wait(&status) != child)
- ;
- exit(
- /* Was there some problem with vforking? */
- child < 0
+ /* This test makes some buggy mktime implementations loop.
+ Give up after 60 seconds; a mktime slower than that
+ isn't worth using anyway. */
+ alarm (60);
- /* Did the child fail? (This shouldn't happen.) */
- || status
+ for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
+ continue;
+ time_t_max--;
+ delta = time_t_max / 997; /* a suitable prime number */
+ for (i = 0; i < N_STRINGS; i++)
+ {
+ if (tz_strings[i])
+ putenv (tz_strings[i]);
- /* Did the vfork/compiler bug occur? */
- || parent != getpid()
+ for (t = 0; t <= time_t_max - delta; t += delta)
+ mktime_test (t);
+ mktime_test ((time_t) 60 * 60);
+ mktime_test ((time_t) 60 * 60 * 24);
- /* Did the file descriptor bug occur? */
- || fstat(fileno(stdout), &st) != 0
- );
- }
+ for (j = 1; 0 < j; j *= 2)
+ bigtime_test (j);
+ bigtime_test (j - 1);
+ }
+ irix_6_4_bug ();
+ spring_forward_gap ();
+ exit (0);
}],
-ac_cv_func_vfork_works=yes, ac_cv_func_vfork_works=no, AC_CHECK_FUNC(vfork)
-ac_cv_func_vfork_works=$ac_cv_func_vfork)])
-if test "x$ac_cv_func_vfork_works" = xno; then
- AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
+ac_cv_func_working_mktime=yes, ac_cv_func_working_mktime=no,
+ac_cv_func_working_mktime=no)])
+if test $ac_cv_func_working_mktime = no; then
+ LIBOBJS="$LIBOBJS mktime.${ac_objext}"
fi
-])# AC_FUNC_VFORK
+])# AC_FUNC_MKTIME
-# AC_FUNC_WAIT3
-# -------------
-AC_DEFUN(AC_FUNC_WAIT3,
-[AC_CACHE_CHECK(for wait3 that fills in rusage, ac_cv_func_wait3_rusage,
+# AC_FUNC_MMAP
+# ------------
+AC_DEFUN(AC_FUNC_MMAP,
+[AC_CHECK_HEADERS(unistd.h)
+AC_CHECK_FUNCS(getpagesize)
+AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
[AC_TRY_RUN(
-[#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <stdio.h>
-/* HP-UX has wait3 but does not fill in rusage at all. */
-int
-main ()
-{
- struct rusage r;
- int i;
- /* Use a field that we can force nonzero --
- voluntary context switches.
- For systems like NeXT and OSF/1 that don't set it,
- also use the system CPU time. And page faults (I/O) for Linux. */
- r.ru_nvcsw = 0;
- r.ru_stime.tv_sec = 0;
- r.ru_stime.tv_usec = 0;
- r.ru_majflt = r.ru_minflt = 0;
- switch (fork ())
- {
- case 0: /* Child. */
- sleep(1); /* Give up the CPU. */
- _exit(0);
- case -1: /* What can we do? */
- _exit(0);
- default: /* Parent. */
- wait3(&i, 0, &r);
- /* Avoid "text file busy" from rm on fast HP-UX machines. */
- sleep(2);
- exit (r.ru_nvcsw == 0 && r.ru_majflt == 0 && r.ru_minflt == 0
- && r.ru_stime.tv_sec == 0 && r.ru_stime.tv_usec == 0);
- }
-}], ac_cv_func_wait3_rusage=yes, ac_cv_func_wait3_rusage=no,
-ac_cv_func_wait3_rusage=no)])
-if test $ac_cv_func_wait3_rusage = yes; then
- AC_DEFINE(HAVE_WAIT3, 1,
- [Define if you have the `wait3' system call.])
-fi
-])# AC_FUNC_WAIT3
+[/* Thanks to Mike Haertel and Jim Avera for this test.
+ Here is a matrix of mmap possibilities:
+ mmap private not fixed
+ mmap private fixed at somewhere currently unmapped
+ mmap private fixed at somewhere already mapped
+ mmap shared not fixed
+ mmap shared fixed at somewhere currently unmapped
+ mmap shared fixed at somewhere already mapped
+ For private mappings, we should verify that changes cannot be read()
+ back from the file, nor mmap's back from the file at a different
+ address. (There have been systems where private was not correctly
+ implemented like the infamous i386 svr4.0, and systems where the
+ VM page cache was not coherent with the file system buffer cache
+ like early versions of FreeBSD and possibly contemporary NetBSD.)
+ For shared mappings, we should conversely verify that changes get
+ propogated back to all the places they're supposed to be.
+ Grep wants private fixed already mapped.
+ The main things grep needs to know about mmap are:
+ * does it exist and is it safe to write into the mmap'd area
+ * how to use it (BSD variants) */
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/mman.h>
-# AC_FUNC_ALLOCA
-# --------------
-AC_DEFUN(AC_FUNC_ALLOCA,
-[AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally.
-# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
-# for constant arguments. Useless!
-AC_CACHE_CHECK([for working alloca.h], ac_cv_working_alloca_h,
-[AC_TRY_LINK([#include <alloca.h>], [char *p = alloca(2 * sizeof(int));],
- ac_cv_working_alloca_h=yes, ac_cv_working_alloca_h=no)])
-if test $ac_cv_working_alloca_h = yes; then
- AC_DEFINE(HAVE_ALLOCA_H, 1,
- [Define if you have <alloca.h> and it should be used
- (not on Ultrix).])
-fi
+/* This mess was copied from the GNU getpagesize.h. */
+#if !HAVE_GETPAGESIZE
+# if HAVE_UNISTD_H
+# include <unistd.h>
+# endif
-AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works,
-[AC_TRY_LINK(
-[#ifdef __GNUC__
-# define alloca __builtin_alloca
-#else
-# ifdef _MSC_VER
-# include <malloc.h>
-# define alloca _alloca
-# else
-# if HAVE_ALLOCA_H
-# include <alloca.h>
-# else
-# ifdef _AIX
- #pragma alloca
-# else
-# ifndef alloca /* predefined by HP cc +Olibcalls */
-char *alloca ();
-# endif
-# endif
-# endif
+/* Assume that all systems that can run configure have sys/param.h. */
+# if !HAVE_SYS_PARAM_H
+# define HAVE_SYS_PARAM_H 1
# endif
-#endif
-], [char *p = (char *) alloca(1);],
- ac_cv_func_alloca_works=yes, ac_cv_func_alloca_works=no)])
-if test $ac_cv_func_alloca_works = yes; then
- AC_DEFINE(HAVE_ALLOCA, 1,
- [Define if you have `alloca', as a function or macro.])
-fi
-if test $ac_cv_func_alloca_works = no; then
- # The SVR3 libPW and SVR4 libucb both contain incompatible functions
- # that cause trouble. Some versions do not even contain alloca or
- # contain a buggy version. If you still want to use their alloca,
- # use ar to extract alloca.o from them instead of compiling alloca.c.
- ALLOCA=alloca.${ac_objext}
- AC_DEFINE(C_ALLOCA, 1, [Define if using `alloca.c'.])
+# ifdef _SC_PAGESIZE
+# define getpagesize() sysconf(_SC_PAGESIZE)
+# else /* no _SC_PAGESIZE */
+# if HAVE_SYS_PARAM_H
+# include <sys/param.h>
+# ifdef EXEC_PAGESIZE
+# define getpagesize() EXEC_PAGESIZE
+# else /* no EXEC_PAGESIZE */
+# ifdef NBPG
+# define getpagesize() NBPG * CLSIZE
+# ifndef CLSIZE
+# define CLSIZE 1
+# endif /* no CLSIZE */
+# else /* no NBPG */
+# ifdef NBPC
+# define getpagesize() NBPC
+# else /* no NBPC */
+# ifdef PAGESIZE
+# define getpagesize() PAGESIZE
+# endif /* PAGESIZE */
+# endif /* no NBPC */
+# endif /* no NBPG */
+# endif /* no EXEC_PAGESIZE */
+# else /* no HAVE_SYS_PARAM_H */
+# define getpagesize() 8192 /* punt totally */
+# endif /* no HAVE_SYS_PARAM_H */
+# endif /* no _SC_PAGESIZE */
-AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
-[AC_EGREP_CPP(webecray,
-[#if defined(CRAY) && ! defined(CRAY2)
-webecray
+#endif /* no HAVE_GETPAGESIZE */
+
+#ifdef __cplusplus
+extern "C" { void *malloc(unsigned); }
#else
-wenotbecray
+char *malloc();
#endif
-], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
-if test $ac_cv_os_cray = yes; then
-for ac_func in _getb67 GETB67 getb67; do
- AC_CHECK_FUNC($ac_func,
- [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func,
- [Define to one of _getb67, GETB67, getb67
- for Cray-2 and Cray-YMP systems.
- This function is required for alloca.c
- support on those systems.])
- break])
-done
-fi
-
-AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
-[AC_TRY_RUN(
-[find_stack_direction ()
-{
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
-}
int
main ()
{
- exit (find_stack_direction () < 0);
-}], ac_cv_c_stack_direction=1, ac_cv_c_stack_direction=-1,
- ac_cv_c_stack_direction=0)])
-AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
-fi
-AC_SUBST(ALLOCA)dnl
-])# AC_FUNC_ALLOCA
+ char *data, *data2, *data3;
+ int i, pagesize;
+ int fd;
+ pagesize = getpagesize ();
-# AC_FUNC_GETLOADAVG
-# ------------------
-AC_DEFUN(AC_FUNC_GETLOADAVG,
-[ac_have_func=no # yes means we've found a way to get the load average.
+ /* First, make a file with some known garbage in it. */
+ data = malloc (pagesize);
+ if (!data)
+ exit (1);
+ for (i = 0; i < pagesize; ++i)
+ *(data + i) = rand ();
+ umask (0);
+ fd = creat ("conftestmmap", 0600);
+ if (fd < 0)
+ exit (1);
+ if (write (fd, data, pagesize) != pagesize)
+ exit (1);
+ close (fd);
-# Some systems with -lutil have (and need) -lkvm as well, some do not.
-# On Solaris, -lkvm requires nlist from -lelf, so check that first
-# to get the right answer into the cache.
-AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
-AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
-AC_CHECK_LIB(kstat, kstat_open)
-# Check for the 4.4BSD definition of getloadavg.
-AC_CHECK_LIB(util, getloadavg,
- [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
+ /* Next, try to mmap the file at a fixed address which already has
+ something else allocated at it. If we can, also make sure that
+ we see the same garbage. */
+ fd = open ("conftestmmap", O_RDWR);
+ if (fd < 0)
+ exit (1);
+ data2 = malloc (2 * pagesize);
+ if (!data2)
+ exit (1);
+ data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
+ if (data2 != mmap (data2, pagesize, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_FIXED, fd, 0L))
+ exit (1);
+ for (i = 0; i < pagesize; ++i)
+ if (*(data + i) != *(data2 + i))
+ exit (1);
-if test $ac_have_func = no; then
- # There is a commonly available library for RS/6000 AIX.
- # Since it is not a standard part of AIX, it might be installed locally.
- ac_getloadavg_LIBS="$LIBS"; LIBS="-L/usr/local/lib $LIBS"
- AC_CHECK_LIB(getloadavg, getloadavg,
- LIBS="-lgetloadavg $LIBS", LIBS="$ac_getloadavg_LIBS")
+ /* Finally, make sure that changes to the mapped area do not
+ percolate back to the file as seen by read(). (This is a bug on
+ some variants of i386 svr4.0.) */
+ for (i = 0; i < pagesize; ++i)
+ *(data2 + i) = *(data2 + i) + 1;
+ data3 = malloc (pagesize);
+ if (!data3)
+ exit (1);
+ if (read (fd, data3, pagesize) != pagesize)
+ exit (1);
+ for (i = 0; i < pagesize; ++i)
+ if (*(data + i) != *(data3 + i))
+ exit (1);
+ close (fd);
+ unlink ("conftestmmap");
+ exit (0);
+}], ac_cv_func_mmap_fixed_mapped=yes, ac_cv_func_mmap_fixed_mapped=no,
+ac_cv_func_mmap_fixed_mapped=no)])
+if test $ac_cv_func_mmap_fixed_mapped = yes; then
+ AC_DEFINE(HAVE_MMAP, 1,
+ [Define if you have a working `mmap' system call.])
fi
+])# AC_FUNC_MMAP
-# Make sure it is really in the library, if we think we found it.
-AC_REPLACE_FUNCS(getloadavg)
-
-if test $ac_cv_func_getloadavg = yes; then
- AC_DEFINE(HAVE_GETLOADAVG, 1,
- [Define if your system has its own `getloadavg' function.])
- ac_have_func=yes
-else
- # Figure out what our getloadavg.c needs.
- ac_have_func=no
- AC_CHECK_HEADER(sys/dg_sys_info.h,
- [ac_have_func=yes;
- AC_DEFINE(DGUX, 1, [Define for DGUX with <sys/dg_sys_info.h>.])
- AC_CHECK_LIB(dgc, dg_sys_info)])
-
- # We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
- # uses stabs), but it is still SVR4. We cannot check for <elf.h> because
- # Irix 4.0.5F has the header but not the library.
- if test $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then
- ac_have_func=yes;
- AC_DEFINE(SVR4, 1,
- [Define on System V Release 4.])
- fi
-
- if test $ac_have_func = no; then
- AC_CHECK_HEADER(inq_stats/cpustats.h,
- [ac_have_func=yes;
- AC_DEFINE(UMAX, 1,
- [Define for Encore UMAX.])
- AC_DEFINE(UMAX4_3, 1,
- [Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
- instead of <sys/cpustats.h>.])])
- fi
-
- if test $ac_have_func = no; then
- AC_CHECK_HEADER(sys/cpustats.h,
- [ac_have_func=yes; AC_DEFINE(UMAX)])
- fi
-
- if test $ac_have_func = no; then
- AC_CHECK_HEADERS(mach/mach.h)
- fi
- AC_CHECK_HEADER(nlist.h,
- [AC_DEFINE(NLIST_STRUCT, 1, [Define if you have <nlist.h>.])
- AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un,
- [AC_TRY_COMPILE([#include <nlist.h>
-],
- [struct nlist n; n.n_un.n_name = 0;],
- ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)])
- if test $ac_cv_struct_nlist_n_un = yes; then
- AC_DEFINE(NLIST_NAME_UNION, 1,
- [Define if your `struct nlist' has an `n_un' member.])
- fi
- ])dnl
-fi # Do not have getloadavg in system libraries.
+# AC_FUNC_MEMCMP
+# --------------
+AC_DEFUN(AC_FUNC_MEMCMP,
+[AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean,
+[AC_TRY_RUN(
+[int
+main()
+{
+ char c0 = 0x40, c1 = 0x80, c2 = 0x81;
+ exit (memcmp(&c0, &c2, 1) < 0
+ && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
+}], ac_cv_func_memcmp_clean=yes, ac_cv_func_memcmp_clean=no,
+ac_cv_func_memcmp_clean=no)])
+test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}"
+AC_SUBST(LIBOBJS)dnl
+])# AC_FUNC_MEMCMP
-# Some definitions of getloadavg require that the program be installed setgid.
-dnl FIXME: Don't hardwire the path of getloadavg.c in the top-level directory.
-AC_CACHE_CHECK(whether getloadavg requires setgid,
- ac_cv_func_getloadavg_setgid,
-[AC_EGREP_CPP([Yowza Am I SETGID yet],
-[#include "$srcdir/getloadavg.c"
-#ifdef LDAV_PRIVILEGED
-Yowza Am I SETGID yet
-#endif],
- ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)])
-if test $ac_cv_func_getloadavg_setgid = yes; then
- NEED_SETGID=true;
- AC_DEFINE(GETLOADAVG_PRIVILEGED, 1,
- [Define if the `getloadavg' function needs to be run setuid
- or setgid.])
-else
- NEED_SETGID=false
-fi
-AC_SUBST(NEED_SETGID)dnl
-if test $ac_cv_func_getloadavg_setgid = yes; then
- AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
-[ # On Solaris, /dev/kmem is a symlink. Get info on the real file.
- ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
- # If we got an error (system does not support symlinks), try without -L.
- test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
- ac_cv_group_kmem=`echo $ac_ls_output \
- | sed -ne ['s/[ ][ ]*/ /g;
- s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/;
- / /s/.* //;p;']`
-])
- KMEM_GROUP=$ac_cv_group_kmem
-fi
-AC_SUBST(KMEM_GROUP)dnl
-])# AC_FUNC_GETLOADAVG
+# AC_FUNC_SELECT_ARGTYPES
+# -----------------------
+AC_DEFUN(AC_FUNC_SELECT_ARGTYPES,
+[AC_MSG_CHECKING([types of arguments for select()])
+ AC_CACHE_VAL(ac_cv_func_select_arg234,dnl
+ [AC_CACHE_VAL(ac_cv_func_select_arg1,dnl
+ [AC_CACHE_VAL(ac_cv_func_select_arg5,dnl
+ [for ac_cv_func_select_arg234 in 'fd_set *' 'int *' 'void *'; do
+ for ac_cv_func_select_arg1 in 'int' 'size_t' 'unsigned long' 'unsigned'; do
+ for ac_cv_func_select_arg5 in 'struct timeval *' 'const struct timeval *'; do
+ AC_TRY_COMPILE(
+[#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#if HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+extern select ($ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5);],,dnl
+ [ac_not_found=no ; break 3],ac_not_found=yes)
+ done
+ done
+ done
+ ])dnl AC_CACHE_VAL
+ ])dnl AC_CACHE_VAL
+ ])dnl AC_CACHE_VAL
+ if test "$ac_not_found" = yes; then
+ ac_cv_func_select_arg1=int
+ ac_cv_func_select_arg234='int *'
+ ac_cv_func_select_arg5='struct timeval *'
+ fi
+ AC_MSG_RESULT([$ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5])
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG1, $ac_cv_func_select_arg1,
+ [Define to the type of arg 1 for `select'.])
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG234, ($ac_cv_func_select_arg234),
+ [Define to the type of args 2, 3 and 4 for `select'.])
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG5, ($ac_cv_func_select_arg5),
+ [Define to the type of arg 5 for `select'.])
+])# AC_FUNC_SELECT_ARGTYPES
-# AC_FUNC_UTIME_NULL
-# ------------------
-AC_DEFUN(AC_FUNC_UTIME_NULL,
-[AC_CACHE_CHECK(whether utime accepts a null argument, ac_cv_func_utime_null,
-[rm -f conftestdata; >conftestdata
-# Sequent interprets utime(file, 0) to mean use start of epoch. Wrong.
+# AC_FUNC_SETPGRP
+# ---------------
+AC_DEFUN(AC_FUNC_SETPGRP,
+[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
AC_TRY_RUN(
-[#include <sys/types.h>
-#include <sys/stat.h>
-int
-main()
-{
- struct stat s, t;
- exit (!(stat ("conftestdata", &s) == 0
- && utime ("conftestdata", (long *)0) == 0
- && stat ("conftestdata", &t) == 0
- && t.st_mtime >= s.st_mtime
- && t.st_mtime - s.st_mtime < 120));
-}], ac_cv_func_utime_null=yes, ac_cv_func_utime_null=no,
- ac_cv_func_utime_null=no)
-rm -f core core.* *.core])
-if test $ac_cv_func_utime_null = yes; then
- AC_DEFINE(HAVE_UTIME_NULL, 1,
- [Define if `utime(file, NULL)' sets file's timestamp to the
- present.])
-fi
-])# AC_FUNC_UTIME_NULL
+[#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+/* If this system has a BSD-style setpgrp, which takes arguments, exit
+ successfully. */
-# AC_FUNC_STRCOLL
-# ---------------
-AC_DEFUN(AC_FUNC_STRCOLL,
-[AC_CACHE_CHECK(for working strcoll, ac_cv_func_strcoll_works,
-[AC_TRY_RUN([#include <string.h>
int
main ()
{
- exit (strcoll ("abc", "def") >= 0 ||
- strcoll ("ABC", "DEF") >= 0 ||
- strcoll ("123", "456") >= 0);
-}], ac_cv_func_strcoll_works=yes, ac_cv_func_strcoll_works=no,
-ac_cv_func_strcoll_works=no)])
-if test $ac_cv_func_strcoll_works = yes; then
- AC_DEFINE(HAVE_STRCOLL, 1,
- [Define if you have the `strcoll' function and it is properly
- defined.])
+ if (setpgrp (1,1) == -1)
+ exit (0);
+ else
+ exit (1);
+}], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes,
+ AC_MSG_ERROR(cannot check setpgrp if cross compiling))
+)
+if test $ac_cv_func_setpgrp_void = yes; then
+ AC_DEFINE(SETPGRP_VOID, 1,
+ [Define if the `setpgrp' function takes no argument.])
fi
-])# AC_FUNC_STRCOLL
+])# AC_FUNC_SETPGRP
-# AC_FUNC_SETVBUF_REVERSED
-# ------------------------
-AC_DEFUN(AC_FUNC_SETVBUF_REVERSED,
-[AC_CACHE_CHECK(whether setvbuf arguments are reversed,
- ac_cv_func_setvbuf_reversed,
-[AC_TRY_RUN([#include <stdio.h>
-/* If setvbuf has the reversed format, exit 0. */
+# AC_FUNC_STRFTIME
+# ----------------
+AC_DEFUN(AC_FUNC_STRFTIME,
+[AC_CHECK_FUNC(strftime,
+ [AC_DEFINE(HAVE_STRFTIME, 1,
+ [Define if you have the `strftime' function.])],
+[# strftime is in -lintl on SCO UNIX.
+AC_CHECK_LIB(intl, strftime,
+[AC_DEFINE(HAVE_STRFTIME, 1,
+ [Define if you have the `strftime' function.])
+LIBS="-lintl $LIBS"])])dnl
+])# AC_FUNC_STRFTIME
+
+
+# AC_FUNC_VFORK
+# -------------
+AC_DEFUN(AC_FUNC_VFORK,
+[AC_REQUIRE([AC_TYPE_PID_T])dnl
+AC_CHECK_HEADER(vfork.h,
+ AC_DEFINE(HAVE_VFORK_H, 1,
+ [Define if you have <vfork.h>.]))
+AC_CACHE_CHECK(for working vfork, ac_cv_func_vfork_works,
+[AC_TRY_RUN([/* Thanks to Paul Eggert for this test. */
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#if HAVE_VFORK_H
+# include <vfork.h>
+#endif
+/* On some sparc systems, changes by the child to local and incoming
+ argument registers are propagated back to the parent. The compiler
+ is told about this with #include <vfork.h>, but some compilers
+ (e.g. gcc -O) don't grok <vfork.h>. Test for this by using a
+ static variable whose address is put into a register that is
+ clobbered by the vfork. */
+static
+#ifdef __cplusplus
+sparc_address_test (int arg)
+# else
+sparc_address_test (arg) int arg;
+#endif
+{
+ static pid_t child;
+ if (!child) {
+ child = vfork ();
+ if (child < 0) {
+ perror ("vfork");
+ _exit(2);
+ }
+ if (!child) {
+ arg = getpid();
+ write(-1, "", 0);
+ _exit (arg);
+ }
+ }
+}
+
int
main ()
{
- /* This call has the arguments reversed.
- A reversed system may check and see that the address of main
- is not _IOLBF, _IONBF, or _IOFBF, and return nonzero. */
- if (setvbuf(stdout, _IOLBF, (char *) main, BUFSIZ) != 0)
- exit(1);
- putc('\r', stdout);
- exit(0); /* Non-reversed systems segv here. */
-}], ac_cv_func_setvbuf_reversed=yes, ac_cv_func_setvbuf_reversed=no)
-rm -f core core.* *.core])
-if test $ac_cv_func_setvbuf_reversed = yes; then
- AC_DEFINE(SETVBUF_REVERSED, 1,
- [Define if the `setvbuf' function takes the buffering type as
- its second argument and the buffer pointer as the third, as on
- System V before release 3.])
-fi
-])# AC_FUNC_SETVBUF_REVERSED
-
-
-# AC_FUNC_GETMNTENT
-# -----------------
-AC_DEFUN(AC_FUNC_GETMNTENT,
-[# getmntent is in -lsun on Irix 4, -lseq on Dynix/PTX, -lgen on Unixware.
-AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS",
- [AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS",
- [AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])])
-AC_CHECK_FUNC(getmntent,
- [AC_DEFINE(HAVE_GETMNTENT, 1,
- [Define if you have the `getmntent' function.])])])
-
+ pid_t parent = getpid ();
+ pid_t child;
-# AC_FUNC_MKTIME
-# --------------
-AC_DEFUN(AC_FUNC_MKTIME,
-[AC_REQUIRE([AC_HEADER_TIME])dnl
-AC_CHECK_HEADERS(sys/time.h unistd.h)
-AC_CHECK_FUNCS(alarm)
-AC_CACHE_CHECK([for working mktime], ac_cv_func_working_mktime,
-[AC_TRY_RUN(
-[/* Test program from Paul Eggert and Tony Leneis. */
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
+ sparc_address_test ();
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+ child = vfork ();
-#if !HAVE_ALARM
-# define alarm(X) /* empty */
-#endif
+ if (child == 0) {
+ /* Here is another test for sparc vfork register problems. This
+ test uses lots of local variables, at least as many local
+ variables as main has allocated so far including compiler
+ temporaries. 4 locals are enough for gcc 1.40.3 on a Solaris
+ 4.1.3 sparc, but we use 8 to be safe. A buggy compiler should
+ reuse the register of parent for one of the local variables,
+ since it will think that parent can't possibly be used any more
+ in this routine. Assigning to the local variable will thus
+ munge parent in the parent process. */
+ pid_t
+ p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
+ p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
+ /* Convince the compiler that p..p7 are live; otherwise, it might
+ use the same hardware register for all 8 local variables. */
+ if (p != p1 || p != p2 || p != p3 || p != p4
+ || p != p5 || p != p6 || p != p7)
+ _exit(1);
-/* Work around redefinition to rpl_putenv by other config tests. */
-#undef putenv
+ /* On some systems (e.g. IRIX 3.3), vfork doesn't separate parent
+ from child file descriptors. If the child closes a descriptor
+ before it execs or exits, this munges the parent's descriptor
+ as well. Test for this by closing stdout in the child. */
+ _exit(close(fileno(stdout)) != 0);
+ } else {
+ int status;
+ struct stat st;
-static time_t time_t_max;
+ while (wait(&status) != child)
+ ;
+ exit(
+ /* Was there some problem with vforking? */
+ child < 0
-/* Values we'll use to set the TZ environment variable. */
-static const char *const tz_strings[] = {
- (const char *) 0, "TZ=GMT0", "TZ=JST-9",
- "TZ=EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00"
-};
-#define N_STRINGS (sizeof (tz_strings) / sizeof (tz_strings[0]))
+ /* Did the child fail? (This shouldn't happen.) */
+ || status
-/* Fail if mktime fails to convert a date in the spring-forward gap.
- Based on a problem report from Andreas Jaeger. */
-static void
-spring_forward_gap ()
-{
- /* glibc (up to about 1998-10-07) failed this test) */
- struct tm tm;
+ /* Did the vfork/compiler bug occur? */
+ || parent != getpid()
- /* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0"
- instead of "TZ=America/Vancouver" in order to detect the bug even
- on systems that don't support the Olson extension, or don't have the
- full zoneinfo tables installed. */
- putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
+ /* Did the file descriptor bug occur? */
+ || fstat(fileno(stdout), &st) != 0
+ );
+ }
+}],
+ac_cv_func_vfork_works=yes, ac_cv_func_vfork_works=no, AC_CHECK_FUNC(vfork)
+ac_cv_func_vfork_works=$ac_cv_func_vfork)])
+if test "x$ac_cv_func_vfork_works" = xno; then
+ AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
+fi
+])# AC_FUNC_VFORK
- tm.tm_year = 98;
- tm.tm_mon = 3;
- tm.tm_mday = 5;
- tm.tm_hour = 2;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1;
- if (mktime (&tm) == (time_t)-1)
- exit (1);
-}
-static void
-mktime_test (now)
- time_t now;
-{
- struct tm *lt;
- if ((lt = localtime (&now)) && mktime (lt) != now)
- exit (1);
- now = time_t_max - now;
- if ((lt = localtime (&now)) && mktime (lt) != now)
- exit (1);
-}
+# AC_FUNC_VPRINTF
+# ---------------
+# Why the heck is that _doprnt does not define HAVE__DOPRNT???
+# That the logical name! In addition, why doesn't it use
+# AC_CHECK_FUNCS(vprintf)? Because old Autoconf uses sh for loops.
+# FIXME: To be changed in Autoconf 3?
+AC_DEFUN(AC_FUNC_VPRINTF,
+[AC_CHECK_FUNC(vprintf,
+ AC_DEFINE(HAVE_VPRINTF, 1,
+ [Define if you have the `vprintf' function.]))
+if test "$ac_cv_func_vprintf" != yes; then
+AC_CHECK_FUNC(_doprnt,
+ AC_DEFINE(HAVE_DOPRNT, 1,
+ [Define if you don't have `vprintf' but do have
+ `_doprnt.']))
+fi
+])
-static void
-irix_6_4_bug ()
-{
- /* Based on code from Ariel Faigon. */
- struct tm tm;
- tm.tm_year = 96;
- tm.tm_mon = 3;
- tm.tm_mday = 0;
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1;
- mktime (&tm);
- if (tm.tm_mon != 2 || tm.tm_mday != 31)
- exit (1);
-}
-static void
-bigtime_test (j)
- int j;
+# AC_FUNC_WAIT3
+# -------------
+AC_DEFUN(AC_FUNC_WAIT3,
+[AC_CACHE_CHECK(for wait3 that fills in rusage, ac_cv_func_wait3_rusage,
+[AC_TRY_RUN(
+[#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <stdio.h>
+/* HP-UX has wait3 but does not fill in rusage at all. */
+int
+main ()
{
- struct tm tm;
- time_t now;
- tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j;
- now = mktime (&tm);
- if (now != (time_t) -1)
+ struct rusage r;
+ int i;
+ /* Use a field that we can force nonzero --
+ voluntary context switches.
+ For systems like NeXT and OSF/1 that don't set it,
+ also use the system CPU time. And page faults (I/O) for Linux. */
+ r.ru_nvcsw = 0;
+ r.ru_stime.tv_sec = 0;
+ r.ru_stime.tv_usec = 0;
+ r.ru_majflt = r.ru_minflt = 0;
+ switch (fork ())
{
- struct tm *lt = localtime (&now);
- if (! (lt
- && lt->tm_year == tm.tm_year
- && lt->tm_mon == tm.tm_mon
- && lt->tm_mday == tm.tm_mday
- && lt->tm_hour == tm.tm_hour
- && lt->tm_min == tm.tm_min
- && lt->tm_sec == tm.tm_sec
- && lt->tm_yday == tm.tm_yday
- && lt->tm_wday == tm.tm_wday
- && ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst)
- == (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst))))
- exit (1);
+ case 0: /* Child. */
+ sleep(1); /* Give up the CPU. */
+ _exit(0);
+ case -1: /* What can we do? */
+ _exit(0);
+ default: /* Parent. */
+ wait3(&i, 0, &r);
+ /* Avoid "text file busy" from rm on fast HP-UX machines. */
+ sleep(2);
+ exit (r.ru_nvcsw == 0 && r.ru_majflt == 0 && r.ru_minflt == 0
+ && r.ru_stime.tv_sec == 0 && r.ru_stime.tv_usec == 0);
}
-}
+}], ac_cv_func_wait3_rusage=yes, ac_cv_func_wait3_rusage=no,
+ac_cv_func_wait3_rusage=no)])
+if test $ac_cv_func_wait3_rusage = yes; then
+ AC_DEFINE(HAVE_WAIT3, 1,
+ [Define if you have the `wait3' system call.])
+fi
+])# AC_FUNC_WAIT3
+
+# AC_FUNC_UTIME_NULL
+# ------------------
+AC_DEFUN(AC_FUNC_UTIME_NULL,
+[AC_CACHE_CHECK(whether utime accepts a null argument, ac_cv_func_utime_null,
+[rm -f conftestdata; >conftestdata
+# Sequent interprets utime(file, 0) to mean use start of epoch. Wrong.
+AC_TRY_RUN(
+[#include <sys/types.h>
+#include <sys/stat.h>
int
-main ()
+main()
{
- time_t t, delta;
- int i, j;
-
- /* This test makes some buggy mktime implementations loop.
- Give up after 60 seconds; a mktime slower than that
- isn't worth using anyway. */
- alarm (60);
-
- for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
- continue;
- time_t_max--;
- delta = time_t_max / 997; /* a suitable prime number */
- for (i = 0; i < N_STRINGS; i++)
- {
- if (tz_strings[i])
- putenv (tz_strings[i]);
-
- for (t = 0; t <= time_t_max - delta; t += delta)
- mktime_test (t);
- mktime_test ((time_t) 60 * 60);
- mktime_test ((time_t) 60 * 60 * 24);
-
- for (j = 1; 0 < j; j *= 2)
- bigtime_test (j);
- bigtime_test (j - 1);
- }
- irix_6_4_bug ();
- spring_forward_gap ();
- exit (0);
-}],
-ac_cv_func_working_mktime=yes, ac_cv_func_working_mktime=no,
-ac_cv_func_working_mktime=no)])
-if test $ac_cv_func_working_mktime = no; then
- LIBOBJS="$LIBOBJS mktime.${ac_objext}"
+ struct stat s, t;
+ exit (!(stat ("conftestdata", &s) == 0
+ && utime ("conftestdata", (long *)0) == 0
+ && stat ("conftestdata", &t) == 0
+ && t.st_mtime >= s.st_mtime
+ && t.st_mtime - s.st_mtime < 120));
+}], ac_cv_func_utime_null=yes, ac_cv_func_utime_null=no,
+ ac_cv_func_utime_null=no)
+rm -f core core.* *.core])
+if test $ac_cv_func_utime_null = yes; then
+ AC_DEFINE(HAVE_UTIME_NULL, 1,
+ [Define if `utime(file, NULL)' sets file's timestamp to the
+ present.])
fi
-])# AC_FUNC_MKTIME
+])# AC_FUNC_UTIME_NULL
-# AC_FUNC_STRFTIME
-# ----------------
-AC_DEFUN(AC_FUNC_STRFTIME,
-[AC_CHECK_FUNC(strftime,
- [AC_DEFINE(HAVE_STRFTIME, 1,
- [Define if you have the `strftime' function.])],
-[# strftime is in -lintl on SCO UNIX.
-AC_CHECK_LIB(intl, strftime,
-[AC_DEFINE(HAVE_STRFTIME, 1,
- [Define if you have the `strftime' function.])
-LIBS="-lintl $LIBS"])])dnl
-])# AC_FUNC_STRFTIME
+# AC_FUNC_STRCOLL
+# ---------------
+AC_DEFUN(AC_FUNC_STRCOLL,
+[AC_CACHE_CHECK(for working strcoll, ac_cv_func_strcoll_works,
+[AC_TRY_RUN([#include <string.h>
+int
+main ()
+{
+ exit (strcoll ("abc", "def") >= 0 ||
+ strcoll ("ABC", "DEF") >= 0 ||
+ strcoll ("123", "456") >= 0);
+}], ac_cv_func_strcoll_works=yes, ac_cv_func_strcoll_works=no,
+ac_cv_func_strcoll_works=no)])
+if test $ac_cv_func_strcoll_works = yes; then
+ AC_DEFINE(HAVE_STRCOLL, 1,
+ [Define if you have the `strcoll' function and it is properly
+ defined.])
+fi
+])# AC_FUNC_STRCOLL
-# AC_FUNC_MEMCMP
-# --------------
-AC_DEFUN(AC_FUNC_MEMCMP,
-[AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean,
-[AC_TRY_RUN(
-[int
-main()
+# AC_FUNC_SETVBUF_REVERSED
+# ------------------------
+AC_DEFUN(AC_FUNC_SETVBUF_REVERSED,
+[AC_CACHE_CHECK(whether setvbuf arguments are reversed,
+ ac_cv_func_setvbuf_reversed,
+[AC_TRY_RUN([#include <stdio.h>
+/* If setvbuf has the reversed format, exit 0. */
+int
+main ()
{
- char c0 = 0x40, c1 = 0x80, c2 = 0x81;
- exit (memcmp(&c0, &c2, 1) < 0
- && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
-}], ac_cv_func_memcmp_clean=yes, ac_cv_func_memcmp_clean=no,
-ac_cv_func_memcmp_clean=no)])
-test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}"
-AC_SUBST(LIBOBJS)dnl
-])# AC_FUNC_MEMCMP
-
+ /* This call has the arguments reversed.
+ A reversed system may check and see that the address of main
+ is not _IOLBF, _IONBF, or _IOFBF, and return nonzero. */
+ if (setvbuf(stdout, _IOLBF, (char *) main, BUFSIZ) != 0)
+ exit(1);
+ putc('\r', stdout);
+ exit(0); /* Non-reversed systems segv here. */
+}], ac_cv_func_setvbuf_reversed=yes, ac_cv_func_setvbuf_reversed=no)
+rm -f core core.* *.core])
+if test $ac_cv_func_setvbuf_reversed = yes; then
+ AC_DEFINE(SETVBUF_REVERSED, 1,
+ [Define if the `setvbuf' function takes the buffering type as
+ its second argument and the buffer pointer as the third, as on
+ System V before release 3.])
+fi
+])# AC_FUNC_SETVBUF_REVERSED
-# AC_FUNC_SELECT_ARGTYPES
-# -----------------------
-AC_DEFUN(AC_FUNC_SELECT_ARGTYPES,
-[AC_MSG_CHECKING([types of arguments for select()])
- AC_CACHE_VAL(ac_cv_func_select_arg234,dnl
- [AC_CACHE_VAL(ac_cv_func_select_arg1,dnl
- [AC_CACHE_VAL(ac_cv_func_select_arg5,dnl
- [for ac_cv_func_select_arg234 in 'fd_set *' 'int *' 'void *'; do
- for ac_cv_func_select_arg1 in 'int' 'size_t' 'unsigned long' 'unsigned'; do
- for ac_cv_func_select_arg5 in 'struct timeval *' 'const struct timeval *'; do
- AC_TRY_COMPILE(dnl
-[#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_TIME_H
-# include <sys/time.h>
-#endif
-#if HAVE_SYS_SELECT_H
-# include <sys/select.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-extern select ($ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5);],,dnl
- [ac_not_found=no ; break 3],ac_not_found=yes)
- done
- done
- done
- ])dnl AC_CACHE_VAL
- ])dnl AC_CACHE_VAL
- ])dnl AC_CACHE_VAL
- if test "$ac_not_found" = yes; then
- ac_cv_func_select_arg1=int
- ac_cv_func_select_arg234='int *'
- ac_cv_func_select_arg5='struct timeval *'
- fi
- AC_MSG_RESULT([$ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5])
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG1, $ac_cv_func_select_arg1,
- [Define to the type of arg1 for `select'.])
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG234, ($ac_cv_func_select_arg234),
- [Define to the type of args 2, 3 and 4 for `select'.])
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG5, ($ac_cv_func_select_arg5),
- [Define to the type of arg5 for `select'.])
-])# AC_FUNC_SELECT_ARGTYPES
## ------------------------------ ##
-# AC_HEADER_TIME
-# --------------
-AC_DEFUN(AC_HEADER_TIME,
-[AC_CACHE_CHECK([whether time.h and sys/time.h may both be included],
- ac_cv_header_time,
-[AC_TRY_COMPILE([#include <sys/types.h>
-#include <sys/time.h>
-#include <time.h>
-],
-[struct tm *tp;], ac_cv_header_time=yes, ac_cv_header_time=no)])
-if test $ac_cv_header_time = yes; then
- AC_DEFINE(TIME_WITH_SYS_TIME, 1,
- [Define if you can safely include both <sys/time.h> and <time.h>.])
-fi
-])# AC_HEADER_TIME
-
-
# AC_STRUCT_TM
# ------------
# FIXME: This macro is badly named, it should be AC_CHECK_TYPE_STRUCT_TM.
])# AC_C_PROTOTYPES
-# AC_OBJEXT
-# ---------
-# Check the object extension used by the compiler: typically .o or
-# .obj. If this is called, some other behaviour will change,
-# determined by ac_objext.
-AC_DEFUN(AC_OBJEXT,
-[AC_MSG_CHECKING([for object suffix])
-AC_CACHE_VAL(ac_cv_objext,
-[rm -f conftest*
-echo 'int i = 1;' >conftest.$ac_ext
-if AC_TRY_EVAL(ac_compile); then
- for ac_file in conftest.*; do
- case $ac_file in
- *.c) ;;
- *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;;
- esac
- done
-else
- AC_MSG_ERROR([installation or configuration problem; compiler does not work])
-fi
-rm -f conftest*])
-AC_MSG_RESULT($ac_cv_objext)
-OBJEXT=$ac_cv_objext
-ac_objext=$ac_cv_objext
-AC_SUBST(OBJEXT)])
+
+
+## ----------------------------------------- ##
+## Checks for F77 compiler characteristics. ##
+## ----------------------------------------- ##
# AC_F77_LIBRARY_LDFLAGS
])# AC_EXEEXT
+# AC_OBJEXT
+# ---------
+# Check the object extension used by the compiler: typically .o or
+# .obj. If this is called, some other behaviour will change,
+# determined by ac_objext.
+AC_DEFUN(AC_OBJEXT,
+[AC_MSG_CHECKING([for object suffix])
+AC_CACHE_VAL(ac_cv_objext,
+[rm -f conftest*
+echo 'int i = 1;' >conftest.$ac_ext
+if AC_TRY_EVAL(ac_compile); then
+ for ac_file in conftest.*; do
+ case $ac_file in
+ *.c) ;;
+ *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;;
+ esac
+ done
+else
+ AC_MSG_ERROR([installation or configuration problem; compiler does not work])
+fi
+rm -f conftest*])
+AC_MSG_RESULT($ac_cv_objext)
+OBJEXT=$ac_cv_objext
+ac_objext=$ac_cv_objext
+AC_SUBST(OBJEXT)])
+
+
## -------------------------- ##
esac
fi])])
+
# AC_PROG_MAKE_SET
# ----------------
# Define SET_MAKE to set ${MAKE} if make doesn't.
SET_MAKE="MAKE=${MAKE-make}"
fi
AC_SUBST([SET_MAKE])dnl
-])
+])# AC_PROG_MAKE_SET
+
AC_DEFUN(AC_PROG_RANLIB,
[AC_CHECK_PROG(RANLIB, ranlib, ranlib, :)])
-dnl Check for mawk first since it's generally faster.
+
+# Check for mawk first since it's generally faster.
AC_DEFUN(AC_PROG_AWK,
[AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )])
-
-
-
## ------------------------- ##
-## Checks for header files. ##
+## Checks for declarations. ##
## ------------------------- ##
-# AC_HEADER_STDC
-# --------------
-AC_DEFUN(AC_HEADER_STDC,
-[AC_REQUIRE_CPP()dnl
-AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
-[AC_TRY_CPP([#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <float.h>
-], ac_cv_header_stdc=yes, ac_cv_header_stdc=no)
-
-if test $ac_cv_header_stdc = yes; then
- # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
-AC_EGREP_HEADER(memchr, string.h, , ac_cv_header_stdc=no)
-fi
-
-if test $ac_cv_header_stdc = yes; then
- # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
-AC_EGREP_HEADER(free, stdlib.h, , ac_cv_header_stdc=no)
-fi
-
-if test $ac_cv_header_stdc = yes; then
- # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
-AC_TRY_RUN(
-[#include <ctype.h>
-#if ((' ' & 0x0FF) == 0x020)
-# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
-# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
-#else
-# define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \
- || ('j' <= (c) && (c) <= 'r') \
- || ('s' <= (c) && (c) <= 'z'))
-# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+# AC_DECL_SYS_SIGLIST
+# -------------------
+AC_DEFUN(AC_DECL_SYS_SIGLIST,
+[AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h],
+ ac_cv_decl_sys_siglist,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <signal.h>
+/* NetBSD declares sys_siglist in unistd.h. */
+#if HAVE_UNISTD_H
+# include <unistd.h>
#endif
-
-#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
-int
-main ()
-{
- int i;
- for (i = 0; i < 256; i++)
- if (XOR (islower (i), ISLOWER (i))
- || toupper (i) != TOUPPER (i))
- exit(2);
- exit (0);
-}], , ac_cv_header_stdc=no, :)
-fi])
-if test $ac_cv_header_stdc = yes; then
- AC_DEFINE(STDC_HEADERS, 1, [Define if you have the ANSI C header files.])
+], [char *msg = *(sys_siglist + 1);],
+ ac_cv_decl_sys_siglist=yes, ac_cv_decl_sys_siglist=no)])
+if test $ac_cv_decl_sys_siglist = yes; then
+ AC_DEFINE(SYS_SIGLIST_DECLARED, 1,
+ [Define if `sys_siglist' is declared by <signal.h> or <unistd.h>.])
fi
-])# AC_HEADER_STDC
+])# AC_DECL_SYS_SIGLIST
-# AC_HEADER_MAJOR
-# ---------------
-AC_DEFUN(AC_HEADER_MAJOR,
-[AC_CACHE_CHECK(whether sys/types.h defines makedev,
- ac_cv_header_sys_types_h_makedev,
-[AC_TRY_LINK([#include <sys/types.h>
-], [return makedev(0, 0);],
- ac_cv_header_sys_types_h_makedev=yes, ac_cv_header_sys_types_h_makedev=no)
-])
-if test $ac_cv_header_sys_types_h_makedev = no; then
-AC_CHECK_HEADER(sys/mkdev.h,
- [AC_DEFINE(MAJOR_IN_MKDEV, 1,
- [Define if `major', `minor', and `makedev' are
- declared in <mkdev.h>.])])
- if test $ac_cv_header_sys_mkdev_h = no; then
- AC_CHECK_HEADER(sys/sysmacros.h,
- [AC_DEFINE(MAJOR_IN_SYSMACROS, 1,
- [Define if `major', `minor', and `makedev' are
- declared in <sysmacros.h>.])])
- fi
-fi
-])# AC_HEADER_MAJOR
+## ------------------------- ##
+## Checks for header files. ##
+## ------------------------- ##
# _AC_CHECK_HEADER_DIRENT(HEADER-FILE, ACTION-IF-FOUND)
])# AC_HEADER_DIRENT
+# AC_HEADER_MAJOR
+# ---------------
+AC_DEFUN(AC_HEADER_MAJOR,
+[AC_CACHE_CHECK(whether sys/types.h defines makedev,
+ ac_cv_header_sys_types_h_makedev,
+[AC_TRY_LINK([#include <sys/types.h>
+], [return makedev(0, 0);],
+ ac_cv_header_sys_types_h_makedev=yes, ac_cv_header_sys_types_h_makedev=no)
+])
+
+if test $ac_cv_header_sys_types_h_makedev = no; then
+AC_CHECK_HEADER(sys/mkdev.h,
+ [AC_DEFINE(MAJOR_IN_MKDEV, 1,
+ [Define if `major', `minor', and `makedev' are
+ declared in <mkdev.h>.])])
+
+ if test $ac_cv_header_sys_mkdev_h = no; then
+ AC_CHECK_HEADER(sys/sysmacros.h,
+ [AC_DEFINE(MAJOR_IN_SYSMACROS, 1,
+ [Define if `major', `minor', and `makedev' are
+ declared in <sysmacros.h>.])])
+ fi
+fi
+])# AC_HEADER_MAJOR
+
+
# AC_HEADER_STAT
# --------------
# FIXME: Shouldn't this be named AC_HEADER_SYS_STAT?
])# AC_HEADER_STAT
-# AC_DECL_SYS_SIGLIST
-# -------------------
-AC_DEFUN(AC_DECL_SYS_SIGLIST,
-[AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h],
- ac_cv_decl_sys_siglist,
-[AC_TRY_COMPILE([#include <sys/types.h>
-#include <signal.h>
-/* NetBSD declares sys_siglist in unistd.h. */
-#if HAVE_UNISTD_H
-# include <unistd.h>
+# AC_HEADER_STDC
+# --------------
+AC_DEFUN(AC_HEADER_STDC,
+[AC_REQUIRE_CPP()dnl
+AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
+[AC_TRY_CPP([#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+], ac_cv_header_stdc=yes, ac_cv_header_stdc=no)
+
+if test $ac_cv_header_stdc = yes; then
+ # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+AC_EGREP_HEADER(memchr, string.h, , ac_cv_header_stdc=no)
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+AC_EGREP_HEADER(free, stdlib.h, , ac_cv_header_stdc=no)
+fi
+
+if test $ac_cv_header_stdc = yes; then
+ # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+AC_TRY_RUN(
+[#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) (('a' <= (c) && (c) <= 'i') \
+ || ('j' <= (c) && (c) <= 'r') \
+ || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
#endif
-], [char *msg = *(sys_siglist + 1);],
- ac_cv_decl_sys_siglist=yes, ac_cv_decl_sys_siglist=no)])
-if test $ac_cv_decl_sys_siglist = yes; then
- AC_DEFINE(SYS_SIGLIST_DECLARED, 1,
- [Define if `sys_siglist' is declared by <signal.h> or <unistd.h>.])
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+ int i;
+ for (i = 0; i < 256; i++)
+ if (XOR (islower (i), ISLOWER (i))
+ || toupper (i) != TOUPPER (i))
+ exit(2);
+ exit (0);
+}], , ac_cv_header_stdc=no, :)
+fi])
+if test $ac_cv_header_stdc = yes; then
+ AC_DEFINE(STDC_HEADERS, 1, [Define if you have the ANSI C header files.])
fi
-])# AC_DECL_SYS_SIGLIST
+])# AC_HEADER_STDC
# AC_HEADER_SYS_WAIT
])# AC_HEADER_SYS_WAIT
+# AC_HEADER_TIME
+# --------------
+AC_DEFUN(AC_HEADER_TIME,
+[AC_CACHE_CHECK([whether time.h and sys/time.h may both be included],
+ ac_cv_header_time,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <sys/time.h>
+#include <time.h>
+],
+[struct tm *tp;], ac_cv_header_time=yes, ac_cv_header_time=no)])
+if test $ac_cv_header_time = yes; then
+ AC_DEFINE(TIME_WITH_SYS_TIME, 1,
+ [Define if you can safely include both <sys/time.h> and <time.h>.])
+fi
+])# AC_HEADER_TIME
+
+
+
+
# A few hasbeen'd macros.
AC_DEFUNCT(AC_UNISTD_H, [; instead use AC_CHECK_HEADERS(unistd.h)])
## ---------------------- ##
-# AC_FUNC_CLOSEDIR_VOID
-# ---------------------
-# Check whether closedir returns void, and #define CLOSEDIR_VOID in
-# that case.
-AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
-[AC_REQUIRE([AC_HEADER_DIRENT])dnl
-AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
-[AC_TRY_RUN(
-[#include <sys/types.h>
-#include <$ac_header_dirent>
-
-int closedir ();
-int
-main ()
-{
- exit (closedir (opendir (".")) != 0);
-}],
- ac_cv_func_closedir_void=no,
- ac_cv_func_closedir_void=yes,
- ac_cv_func_closedir_void=yes)])
-if test $ac_cv_func_closedir_void = yes; then
- AC_DEFINE(CLOSEDIR_VOID, 1,
- [Define if the `closedir' function returns void instead of `int'.])
+# AC_FUNC_ALLOCA
+# --------------
+AC_DEFUN(AC_FUNC_ALLOCA,
+[AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally.
+# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
+# for constant arguments. Useless!
+AC_CACHE_CHECK([for working alloca.h], ac_cv_working_alloca_h,
+[AC_TRY_LINK([#include <alloca.h>], [char *p = alloca(2 * sizeof(int));],
+ ac_cv_working_alloca_h=yes, ac_cv_working_alloca_h=no)])
+if test $ac_cv_working_alloca_h = yes; then
+ AC_DEFINE(HAVE_ALLOCA_H, 1,
+ [Define if you have <alloca.h> and it should be used
+ (not on Ultrix).])
fi
-])
-
-# AC_FUNC_FNMATCH
-# ---------------
-# We look for fnmatch.h to avoid that the test fails in C++.
-AC_DEFUN(AC_FUNC_FNMATCH,
-[AC_CHECK_HEADERS(fnmatch.h)
-AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works,
-# Some versions of Solaris or SCO have a broken fnmatch function.
-# So we run a test program. If we are cross-compiling, take no chance.
-# Thanks to John Oleynick and Franc,ois Pinard for this test.
-[AC_TRY_RUN(
+AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works,
+[AC_TRY_LINK(
+[#ifdef __GNUC__
+# define alloca __builtin_alloca
+#else
+# ifdef _MSC_VER
+# include <malloc.h>
+# define alloca _alloca
+# else
+# if HAVE_ALLOCA_H
+# include <alloca.h>
+# else
+# ifdef _AIX
+ #pragma alloca
+# else
+# ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+# endif
+# endif
+# endif
+# endif
+#endif
+], [char *p = (char *) alloca(1);],
+ ac_cv_func_alloca_works=yes, ac_cv_func_alloca_works=no)])
+if test $ac_cv_func_alloca_works = yes; then
+ AC_DEFINE(HAVE_ALLOCA, 1,
+ [Define if you have `alloca', as a function or macro.])
+fi
+
+if test $ac_cv_func_alloca_works = no; then
+ # The SVR3 libPW and SVR4 libucb both contain incompatible functions
+ # that cause trouble. Some versions do not even contain alloca or
+ # contain a buggy version. If you still want to use their alloca,
+ # use ar to extract alloca.o from them instead of compiling alloca.c.
+ ALLOCA=alloca.${ac_objext}
+ AC_DEFINE(C_ALLOCA, 1, [Define if using `alloca.c'.])
+
+AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
+[AC_EGREP_CPP(webecray,
+[#if defined(CRAY) && ! defined(CRAY2)
+webecray
+#else
+wenotbecray
+#endif
+], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
+if test $ac_cv_os_cray = yes; then
+for ac_func in _getb67 GETB67 getb67; do
+ AC_CHECK_FUNC($ac_func,
+ [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func,
+ [Define to one of _getb67, GETB67, getb67
+ for Cray-2 and Cray-YMP systems.
+ This function is required for alloca.c
+ support on those systems.])
+ break])
+done
+fi
+
+AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
+[AC_TRY_RUN(
+[find_stack_direction ()
+{
+ static char *addr = 0;
+ auto char dummy;
+ if (addr == 0)
+ {
+ addr = &dummy;
+ return find_stack_direction ();
+ }
+ else
+ return (&dummy > addr) ? 1 : -1;
+}
+
+int
+main ()
+{
+ exit (find_stack_direction () < 0);
+}], ac_cv_c_stack_direction=1, ac_cv_c_stack_direction=-1,
+ ac_cv_c_stack_direction=0)])
+AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
+fi
+AC_SUBST(ALLOCA)dnl
+])# AC_FUNC_ALLOCA
+
+
+# AC_FUNC_CLOSEDIR_VOID
+# ---------------------
+# Check whether closedir returns void, and #define CLOSEDIR_VOID in
+# that case.
+AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
+[AC_REQUIRE([AC_HEADER_DIRENT])dnl
+AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
+[AC_TRY_RUN(
+[#include <sys/types.h>
+#include <$ac_header_dirent>
+
+int closedir ();
+int
+main ()
+{
+ exit (closedir (opendir (".")) != 0);
+}],
+ ac_cv_func_closedir_void=no,
+ ac_cv_func_closedir_void=yes,
+ ac_cv_func_closedir_void=yes)])
+if test $ac_cv_func_closedir_void = yes; then
+ AC_DEFINE(CLOSEDIR_VOID, 1,
+ [Define if the `closedir' function returns void instead of `int'.])
+fi
+])
+
+
+# AC_FUNC_FNMATCH
+# ---------------
+# We look for fnmatch.h to avoid that the test fails in C++.
+AC_DEFUN(AC_FUNC_FNMATCH,
+[AC_CHECK_HEADERS(fnmatch.h)
+AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works,
+# Some versions of Solaris or SCO have a broken fnmatch function.
+# So we run a test program. If we are cross-compiling, take no chance.
+# Thanks to John Oleynick and Franc,ois Pinard for this test.
+[AC_TRY_RUN(
[#if HAVE_FNMATCH_H
# include <fnmatch.h>
#endif
])# AC_FUNC_FNMATCH
-# AC_FUNC_MMAP
-# ------------
-AC_DEFUN(AC_FUNC_MMAP,
-[AC_CHECK_HEADERS(unistd.h)
-AC_CHECK_FUNCS(getpagesize)
-AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
-[AC_TRY_RUN(
-[/* Thanks to Mike Haertel and Jim Avera for this test.
- Here is a matrix of mmap possibilities:
- mmap private not fixed
- mmap private fixed at somewhere currently unmapped
- mmap private fixed at somewhere already mapped
- mmap shared not fixed
- mmap shared fixed at somewhere currently unmapped
- mmap shared fixed at somewhere already mapped
- For private mappings, we should verify that changes cannot be read()
- back from the file, nor mmap's back from the file at a different
- address. (There have been systems where private was not correctly
- implemented like the infamous i386 svr4.0, and systems where the
- VM page cache was not coherent with the file system buffer cache
- like early versions of FreeBSD and possibly contemporary NetBSD.)
- For shared mappings, we should conversely verify that changes get
- propogated back to all the places they're supposed to be.
-
- Grep wants private fixed already mapped.
- The main things grep needs to know about mmap are:
- * does it exist and is it safe to write into the mmap'd area
- * how to use it (BSD variants) */
-#include <sys/types.h>
-#include <fcntl.h>
-#include <sys/mman.h>
+# AC_FUNC_GETLOADAVG
+# ------------------
+AC_DEFUN(AC_FUNC_GETLOADAVG,
+[ac_have_func=no # yes means we've found a way to get the load average.
-/* This mess was copied from the GNU getpagesize.h. */
-#if !HAVE_GETPAGESIZE
-# if HAVE_UNISTD_H
-# include <unistd.h>
-# endif
+# Some systems with -lutil have (and need) -lkvm as well, some do not.
+# On Solaris, -lkvm requires nlist from -lelf, so check that first
+# to get the right answer into the cache.
+AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
+AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
+AC_CHECK_LIB(kstat, kstat_open)
+# Check for the 4.4BSD definition of getloadavg.
+AC_CHECK_LIB(util, getloadavg,
+ [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
-/* Assume that all systems that can run configure have sys/param.h. */
-# if !HAVE_SYS_PARAM_H
-# define HAVE_SYS_PARAM_H 1
-# endif
+if test $ac_have_func = no; then
+ # There is a commonly available library for RS/6000 AIX.
+ # Since it is not a standard part of AIX, it might be installed locally.
+ ac_getloadavg_LIBS="$LIBS"; LIBS="-L/usr/local/lib $LIBS"
+ AC_CHECK_LIB(getloadavg, getloadavg,
+ LIBS="-lgetloadavg $LIBS", LIBS="$ac_getloadavg_LIBS")
+fi
-# ifdef _SC_PAGESIZE
-# define getpagesize() sysconf(_SC_PAGESIZE)
-# else /* no _SC_PAGESIZE */
-# if HAVE_SYS_PARAM_H
-# include <sys/param.h>
-# ifdef EXEC_PAGESIZE
-# define getpagesize() EXEC_PAGESIZE
-# else /* no EXEC_PAGESIZE */
-# ifdef NBPG
-# define getpagesize() NBPG * CLSIZE
-# ifndef CLSIZE
-# define CLSIZE 1
-# endif /* no CLSIZE */
-# else /* no NBPG */
-# ifdef NBPC
-# define getpagesize() NBPC
-# else /* no NBPC */
-# ifdef PAGESIZE
-# define getpagesize() PAGESIZE
-# endif /* PAGESIZE */
-# endif /* no NBPC */
-# endif /* no NBPG */
-# endif /* no EXEC_PAGESIZE */
-# else /* no HAVE_SYS_PARAM_H */
-# define getpagesize() 8192 /* punt totally */
-# endif /* no HAVE_SYS_PARAM_H */
-# endif /* no _SC_PAGESIZE */
+# Make sure it is really in the library, if we think we found it.
+AC_REPLACE_FUNCS(getloadavg)
-#endif /* no HAVE_GETPAGESIZE */
+if test $ac_cv_func_getloadavg = yes; then
+ AC_DEFINE(HAVE_GETLOADAVG, 1,
+ [Define if your system has its own `getloadavg' function.])
+ ac_have_func=yes
+else
+ # Figure out what our getloadavg.c needs.
+ ac_have_func=no
+ AC_CHECK_HEADER(sys/dg_sys_info.h,
+ [ac_have_func=yes;
+ AC_DEFINE(DGUX, 1, [Define for DGUX with <sys/dg_sys_info.h>.])
+ AC_CHECK_LIB(dgc, dg_sys_info)])
-#ifdef __cplusplus
-extern "C" { void *malloc(unsigned); }
-#else
-char *malloc();
-#endif
+ # We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
+ # uses stabs), but it is still SVR4. We cannot check for <elf.h> because
+ # Irix 4.0.5F has the header but not the library.
+ if test $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then
+ ac_have_func=yes;
+ AC_DEFINE(SVR4, 1,
+ [Define on System V Release 4.])
+ fi
-int
-main ()
-{
- char *data, *data2, *data3;
- int i, pagesize;
- int fd;
+ if test $ac_have_func = no; then
+ AC_CHECK_HEADER(inq_stats/cpustats.h,
+ [ac_have_func=yes;
+ AC_DEFINE(UMAX, 1,
+ [Define for Encore UMAX.])
+ AC_DEFINE(UMAX4_3, 1,
+ [Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
+ instead of <sys/cpustats.h>.])])
+ fi
- pagesize = getpagesize ();
+ if test $ac_have_func = no; then
+ AC_CHECK_HEADER(sys/cpustats.h,
+ [ac_have_func=yes; AC_DEFINE(UMAX)])
+ fi
- /* First, make a file with some known garbage in it. */
- data = malloc (pagesize);
- if (!data)
- exit (1);
- for (i = 0; i < pagesize; ++i)
- *(data + i) = rand ();
- umask (0);
- fd = creat ("conftestmmap", 0600);
- if (fd < 0)
- exit (1);
- if (write (fd, data, pagesize) != pagesize)
- exit (1);
- close (fd);
+ if test $ac_have_func = no; then
+ AC_CHECK_HEADERS(mach/mach.h)
+ fi
- /* Next, try to mmap the file at a fixed address which already has
- something else allocated at it. If we can, also make sure that
- we see the same garbage. */
- fd = open ("conftestmmap", O_RDWR);
- if (fd < 0)
- exit (1);
- data2 = malloc (2 * pagesize);
- if (!data2)
- exit (1);
- data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
- if (data2 != mmap (data2, pagesize, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_FIXED, fd, 0L))
- exit (1);
- for (i = 0; i < pagesize; ++i)
- if (*(data + i) != *(data2 + i))
- exit (1);
+ AC_CHECK_HEADER(nlist.h,
+ [AC_DEFINE(NLIST_STRUCT, 1, [Define if you have <nlist.h>.])
+ AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un,
+ [AC_TRY_COMPILE([#include <nlist.h>
+],
+ [struct nlist n; n.n_un.n_name = 0;],
+ ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)])
+ if test $ac_cv_struct_nlist_n_un = yes; then
+ AC_DEFINE(NLIST_NAME_UNION, 1,
+ [Define if your `struct nlist' has an `n_un' member.])
+ fi
+ ])dnl
+fi # Do not have getloadavg in system libraries.
- /* Finally, make sure that changes to the mapped area do not
- percolate back to the file as seen by read(). (This is a bug on
- some variants of i386 svr4.0.) */
- for (i = 0; i < pagesize; ++i)
- *(data2 + i) = *(data2 + i) + 1;
- data3 = malloc (pagesize);
- if (!data3)
- exit (1);
- if (read (fd, data3, pagesize) != pagesize)
- exit (1);
- for (i = 0; i < pagesize; ++i)
- if (*(data + i) != *(data3 + i))
- exit (1);
- close (fd);
- unlink ("conftestmmap");
- exit (0);
-}], ac_cv_func_mmap_fixed_mapped=yes, ac_cv_func_mmap_fixed_mapped=no,
-ac_cv_func_mmap_fixed_mapped=no)])
-if test $ac_cv_func_mmap_fixed_mapped = yes; then
- AC_DEFINE(HAVE_MMAP, 1,
- [Define if you have a working `mmap' system call.])
+# Some definitions of getloadavg require that the program be installed setgid.
+dnl FIXME: Don't hardwire the path of getloadavg.c in the top-level directory.
+AC_CACHE_CHECK(whether getloadavg requires setgid,
+ ac_cv_func_getloadavg_setgid,
+[AC_EGREP_CPP([Yowza Am I SETGID yet],
+[#include "$srcdir/getloadavg.c"
+#ifdef LDAV_PRIVILEGED
+Yowza Am I SETGID yet
+#endif],
+ ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)])
+if test $ac_cv_func_getloadavg_setgid = yes; then
+ NEED_SETGID=true;
+ AC_DEFINE(GETLOADAVG_PRIVILEGED, 1,
+ [Define if the `getloadavg' function needs to be run setuid
+ or setgid.])
+else
+ NEED_SETGID=false
fi
-])# AC_FUNC_MMAP
+AC_SUBST(NEED_SETGID)dnl
+
+if test $ac_cv_func_getloadavg_setgid = yes; then
+ AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
+[ # On Solaris, /dev/kmem is a symlink. Get info on the real file.
+ ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
+ # If we got an error (system does not support symlinks), try without -L.
+ test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
+ ac_cv_group_kmem=`echo $ac_ls_output \
+ | sed -ne ['s/[ ][ ]*/ /g;
+ s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/;
+ / /s/.* //;p;']`
+])
+ KMEM_GROUP=$ac_cv_group_kmem
+fi
+AC_SUBST(KMEM_GROUP)dnl
+])# AC_FUNC_GETLOADAVG
+
+
+# AC_FUNC_GETMNTENT
+# -----------------
+AC_DEFUN(AC_FUNC_GETMNTENT,
+[# getmntent is in -lsun on Irix 4, -lseq on Dynix/PTX, -lgen on Unixware.
+AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS",
+ [AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS",
+ [AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])])
+AC_CHECK_FUNC(getmntent,
+ [AC_DEFINE(HAVE_GETMNTENT, 1,
+ [Define if you have the `getmntent' function.])])])
# AC_FUNC_GETPGRP
])# AC_FUNC_GETPGRP
-# AC_FUNC_SETPGRP
-# ---------------
-AC_DEFUN(AC_FUNC_SETPGRP,
-[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
-AC_TRY_RUN(
-[#if HAVE_UNISTD_H
-# include <unistd.h>
+# AC_FUNC_MKTIME
+# --------------
+AC_DEFUN(AC_FUNC_MKTIME,
+[AC_REQUIRE([AC_HEADER_TIME])dnl
+AC_CHECK_HEADERS(sys/time.h unistd.h)
+AC_CHECK_FUNCS(alarm)
+AC_CACHE_CHECK([for working mktime], ac_cv_func_working_mktime,
+[AC_TRY_RUN(
+[/* Test program from Paul Eggert and Tony Leneis. */
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
#endif
-/* If this system has a BSD-style setpgrp, which takes arguments, exit
- successfully. */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
-int
-main ()
-{
- if (setpgrp (1,1) == -1)
- exit (0);
- else
- exit (1);
-}], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes,
- AC_MSG_ERROR(cannot check setpgrp if cross compiling))
-)
-if test $ac_cv_func_setpgrp_void = yes; then
- AC_DEFINE(SETPGRP_VOID, 1,
- [Define if the `setpgrp' function takes no argument.])
-fi
-])# AC_FUNC_SETPGRP
+#if !HAVE_ALARM
+# define alarm(X) /* empty */
+#endif
+/* Work around redefinition to rpl_putenv by other config tests. */
+#undef putenv
-# AC_FUNC_VPRINTF
-# ---------------
-# Why the heck is that _doprnt does not define HAVE__DOPRNT???
-# That the logical name! In addition, why doesn't it use
-# AC_CHECK_FUNCS(vprintf)? Because old Autoconf uses sh for loops.
-# FIXME: To be changed in Autoconf 3?
-AC_DEFUN(AC_FUNC_VPRINTF,
-[AC_CHECK_FUNC(vprintf,
- AC_DEFINE(HAVE_VPRINTF, 1,
- [Define if you have the `vprintf' function.]))
-if test "$ac_cv_func_vprintf" != yes; then
-AC_CHECK_FUNC(_doprnt,
- AC_DEFINE(HAVE_DOPRNT, 1,
- [Define if you don't have `vprintf' but do have
- `_doprnt.']))
-fi
-])
+static time_t time_t_max;
+/* Values we'll use to set the TZ environment variable. */
+static const char *const tz_strings[] = {
+ (const char *) 0, "TZ=GMT0", "TZ=JST-9",
+ "TZ=EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00"
+};
+#define N_STRINGS (sizeof (tz_strings) / sizeof (tz_strings[0]))
-# AC_FUNC_VFORK
-# -------------
-AC_DEFUN(AC_FUNC_VFORK,
-[AC_REQUIRE([AC_TYPE_PID_T])dnl
-AC_CHECK_HEADER(vfork.h,
- AC_DEFINE(HAVE_VFORK_H, 1,
- [Define if you have <vfork.h>.]))
-AC_CACHE_CHECK(for working vfork, ac_cv_func_vfork_works,
-[AC_TRY_RUN([/* Thanks to Paul Eggert for this test. */
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
-#if HAVE_VFORK_H
-# include <vfork.h>
-#endif
-/* On some sparc systems, changes by the child to local and incoming
- argument registers are propagated back to the parent. The compiler
- is told about this with #include <vfork.h>, but some compilers
- (e.g. gcc -O) don't grok <vfork.h>. Test for this by using a
- static variable whose address is put into a register that is
- clobbered by the vfork. */
-static
-#ifdef __cplusplus
-sparc_address_test (int arg)
-# else
-sparc_address_test (arg) int arg;
-#endif
+/* Fail if mktime fails to convert a date in the spring-forward gap.
+ Based on a problem report from Andreas Jaeger. */
+static void
+spring_forward_gap ()
{
- static pid_t child;
- if (!child) {
- child = vfork ();
- if (child < 0) {
- perror ("vfork");
- _exit(2);
- }
- if (!child) {
- arg = getpid();
- write(-1, "", 0);
- _exit (arg);
- }
- }
+ /* glibc (up to about 1998-10-07) failed this test) */
+ struct tm tm;
+
+ /* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0"
+ instead of "TZ=America/Vancouver" in order to detect the bug even
+ on systems that don't support the Olson extension, or don't have the
+ full zoneinfo tables installed. */
+ putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
+
+ tm.tm_year = 98;
+ tm.tm_mon = 3;
+ tm.tm_mday = 5;
+ tm.tm_hour = 2;
+ tm.tm_min = 0;
+ tm.tm_sec = 0;
+ tm.tm_isdst = -1;
+ if (mktime (&tm) == (time_t)-1)
+ exit (1);
}
-int
-main ()
+static void
+mktime_test (now)
+ time_t now;
{
- pid_t parent = getpid ();
- pid_t child;
-
- sparc_address_test ();
+ struct tm *lt;
+ if ((lt = localtime (&now)) && mktime (lt) != now)
+ exit (1);
+ now = time_t_max - now;
+ if ((lt = localtime (&now)) && mktime (lt) != now)
+ exit (1);
+}
- child = vfork ();
+static void
+irix_6_4_bug ()
+{
+ /* Based on code from Ariel Faigon. */
+ struct tm tm;
+ tm.tm_year = 96;
+ tm.tm_mon = 3;
+ tm.tm_mday = 0;
+ tm.tm_hour = 0;
+ tm.tm_min = 0;
+ tm.tm_sec = 0;
+ tm.tm_isdst = -1;
+ mktime (&tm);
+ if (tm.tm_mon != 2 || tm.tm_mday != 31)
+ exit (1);
+}
- if (child == 0) {
- /* Here is another test for sparc vfork register problems. This
- test uses lots of local variables, at least as many local
- variables as main has allocated so far including compiler
- temporaries. 4 locals are enough for gcc 1.40.3 on a Solaris
- 4.1.3 sparc, but we use 8 to be safe. A buggy compiler should
- reuse the register of parent for one of the local variables,
- since it will think that parent can't possibly be used any more
- in this routine. Assigning to the local variable will thus
- munge parent in the parent process. */
- pid_t
- p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
- p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
- /* Convince the compiler that p..p7 are live; otherwise, it might
- use the same hardware register for all 8 local variables. */
- if (p != p1 || p != p2 || p != p3 || p != p4
- || p != p5 || p != p6 || p != p7)
- _exit(1);
+static void
+bigtime_test (j)
+ int j;
+{
+ struct tm tm;
+ time_t now;
+ tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j;
+ now = mktime (&tm);
+ if (now != (time_t) -1)
+ {
+ struct tm *lt = localtime (&now);
+ if (! (lt
+ && lt->tm_year == tm.tm_year
+ && lt->tm_mon == tm.tm_mon
+ && lt->tm_mday == tm.tm_mday
+ && lt->tm_hour == tm.tm_hour
+ && lt->tm_min == tm.tm_min
+ && lt->tm_sec == tm.tm_sec
+ && lt->tm_yday == tm.tm_yday
+ && lt->tm_wday == tm.tm_wday
+ && ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst)
+ == (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst))))
+ exit (1);
+ }
+}
- /* On some systems (e.g. IRIX 3.3), vfork doesn't separate parent
- from child file descriptors. If the child closes a descriptor
- before it execs or exits, this munges the parent's descriptor
- as well. Test for this by closing stdout in the child. */
- _exit(close(fileno(stdout)) != 0);
- } else {
- int status;
- struct stat st;
+int
+main ()
+{
+ time_t t, delta;
+ int i, j;
- while (wait(&status) != child)
- ;
- exit(
- /* Was there some problem with vforking? */
- child < 0
+ /* This test makes some buggy mktime implementations loop.
+ Give up after 60 seconds; a mktime slower than that
+ isn't worth using anyway. */
+ alarm (60);
- /* Did the child fail? (This shouldn't happen.) */
- || status
+ for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
+ continue;
+ time_t_max--;
+ delta = time_t_max / 997; /* a suitable prime number */
+ for (i = 0; i < N_STRINGS; i++)
+ {
+ if (tz_strings[i])
+ putenv (tz_strings[i]);
- /* Did the vfork/compiler bug occur? */
- || parent != getpid()
+ for (t = 0; t <= time_t_max - delta; t += delta)
+ mktime_test (t);
+ mktime_test ((time_t) 60 * 60);
+ mktime_test ((time_t) 60 * 60 * 24);
- /* Did the file descriptor bug occur? */
- || fstat(fileno(stdout), &st) != 0
- );
- }
+ for (j = 1; 0 < j; j *= 2)
+ bigtime_test (j);
+ bigtime_test (j - 1);
+ }
+ irix_6_4_bug ();
+ spring_forward_gap ();
+ exit (0);
}],
-ac_cv_func_vfork_works=yes, ac_cv_func_vfork_works=no, AC_CHECK_FUNC(vfork)
-ac_cv_func_vfork_works=$ac_cv_func_vfork)])
-if test "x$ac_cv_func_vfork_works" = xno; then
- AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
+ac_cv_func_working_mktime=yes, ac_cv_func_working_mktime=no,
+ac_cv_func_working_mktime=no)])
+if test $ac_cv_func_working_mktime = no; then
+ LIBOBJS="$LIBOBJS mktime.${ac_objext}"
fi
-])# AC_FUNC_VFORK
+])# AC_FUNC_MKTIME
-# AC_FUNC_WAIT3
-# -------------
-AC_DEFUN(AC_FUNC_WAIT3,
-[AC_CACHE_CHECK(for wait3 that fills in rusage, ac_cv_func_wait3_rusage,
+# AC_FUNC_MMAP
+# ------------
+AC_DEFUN(AC_FUNC_MMAP,
+[AC_CHECK_HEADERS(unistd.h)
+AC_CHECK_FUNCS(getpagesize)
+AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
[AC_TRY_RUN(
-[#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <stdio.h>
-/* HP-UX has wait3 but does not fill in rusage at all. */
-int
-main ()
-{
- struct rusage r;
- int i;
- /* Use a field that we can force nonzero --
- voluntary context switches.
- For systems like NeXT and OSF/1 that don't set it,
- also use the system CPU time. And page faults (I/O) for Linux. */
- r.ru_nvcsw = 0;
- r.ru_stime.tv_sec = 0;
- r.ru_stime.tv_usec = 0;
- r.ru_majflt = r.ru_minflt = 0;
- switch (fork ())
- {
- case 0: /* Child. */
- sleep(1); /* Give up the CPU. */
- _exit(0);
- case -1: /* What can we do? */
- _exit(0);
- default: /* Parent. */
- wait3(&i, 0, &r);
- /* Avoid "text file busy" from rm on fast HP-UX machines. */
- sleep(2);
- exit (r.ru_nvcsw == 0 && r.ru_majflt == 0 && r.ru_minflt == 0
- && r.ru_stime.tv_sec == 0 && r.ru_stime.tv_usec == 0);
- }
-}], ac_cv_func_wait3_rusage=yes, ac_cv_func_wait3_rusage=no,
-ac_cv_func_wait3_rusage=no)])
-if test $ac_cv_func_wait3_rusage = yes; then
- AC_DEFINE(HAVE_WAIT3, 1,
- [Define if you have the `wait3' system call.])
-fi
-])# AC_FUNC_WAIT3
+[/* Thanks to Mike Haertel and Jim Avera for this test.
+ Here is a matrix of mmap possibilities:
+ mmap private not fixed
+ mmap private fixed at somewhere currently unmapped
+ mmap private fixed at somewhere already mapped
+ mmap shared not fixed
+ mmap shared fixed at somewhere currently unmapped
+ mmap shared fixed at somewhere already mapped
+ For private mappings, we should verify that changes cannot be read()
+ back from the file, nor mmap's back from the file at a different
+ address. (There have been systems where private was not correctly
+ implemented like the infamous i386 svr4.0, and systems where the
+ VM page cache was not coherent with the file system buffer cache
+ like early versions of FreeBSD and possibly contemporary NetBSD.)
+ For shared mappings, we should conversely verify that changes get
+ propogated back to all the places they're supposed to be.
+ Grep wants private fixed already mapped.
+ The main things grep needs to know about mmap are:
+ * does it exist and is it safe to write into the mmap'd area
+ * how to use it (BSD variants) */
+#include <sys/types.h>
+#include <fcntl.h>
+#include <sys/mman.h>
-# AC_FUNC_ALLOCA
-# --------------
-AC_DEFUN(AC_FUNC_ALLOCA,
-[AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally.
-# The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
-# for constant arguments. Useless!
-AC_CACHE_CHECK([for working alloca.h], ac_cv_working_alloca_h,
-[AC_TRY_LINK([#include <alloca.h>], [char *p = alloca(2 * sizeof(int));],
- ac_cv_working_alloca_h=yes, ac_cv_working_alloca_h=no)])
-if test $ac_cv_working_alloca_h = yes; then
- AC_DEFINE(HAVE_ALLOCA_H, 1,
- [Define if you have <alloca.h> and it should be used
- (not on Ultrix).])
-fi
+/* This mess was copied from the GNU getpagesize.h. */
+#if !HAVE_GETPAGESIZE
+# if HAVE_UNISTD_H
+# include <unistd.h>
+# endif
-AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works,
-[AC_TRY_LINK(
-[#ifdef __GNUC__
-# define alloca __builtin_alloca
-#else
-# ifdef _MSC_VER
-# include <malloc.h>
-# define alloca _alloca
-# else
-# if HAVE_ALLOCA_H
-# include <alloca.h>
-# else
-# ifdef _AIX
- #pragma alloca
-# else
-# ifndef alloca /* predefined by HP cc +Olibcalls */
-char *alloca ();
-# endif
-# endif
-# endif
+/* Assume that all systems that can run configure have sys/param.h. */
+# if !HAVE_SYS_PARAM_H
+# define HAVE_SYS_PARAM_H 1
# endif
-#endif
-], [char *p = (char *) alloca(1);],
- ac_cv_func_alloca_works=yes, ac_cv_func_alloca_works=no)])
-if test $ac_cv_func_alloca_works = yes; then
- AC_DEFINE(HAVE_ALLOCA, 1,
- [Define if you have `alloca', as a function or macro.])
-fi
-if test $ac_cv_func_alloca_works = no; then
- # The SVR3 libPW and SVR4 libucb both contain incompatible functions
- # that cause trouble. Some versions do not even contain alloca or
- # contain a buggy version. If you still want to use their alloca,
- # use ar to extract alloca.o from them instead of compiling alloca.c.
- ALLOCA=alloca.${ac_objext}
- AC_DEFINE(C_ALLOCA, 1, [Define if using `alloca.c'.])
+# ifdef _SC_PAGESIZE
+# define getpagesize() sysconf(_SC_PAGESIZE)
+# else /* no _SC_PAGESIZE */
+# if HAVE_SYS_PARAM_H
+# include <sys/param.h>
+# ifdef EXEC_PAGESIZE
+# define getpagesize() EXEC_PAGESIZE
+# else /* no EXEC_PAGESIZE */
+# ifdef NBPG
+# define getpagesize() NBPG * CLSIZE
+# ifndef CLSIZE
+# define CLSIZE 1
+# endif /* no CLSIZE */
+# else /* no NBPG */
+# ifdef NBPC
+# define getpagesize() NBPC
+# else /* no NBPC */
+# ifdef PAGESIZE
+# define getpagesize() PAGESIZE
+# endif /* PAGESIZE */
+# endif /* no NBPC */
+# endif /* no NBPG */
+# endif /* no EXEC_PAGESIZE */
+# else /* no HAVE_SYS_PARAM_H */
+# define getpagesize() 8192 /* punt totally */
+# endif /* no HAVE_SYS_PARAM_H */
+# endif /* no _SC_PAGESIZE */
-AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
-[AC_EGREP_CPP(webecray,
-[#if defined(CRAY) && ! defined(CRAY2)
-webecray
+#endif /* no HAVE_GETPAGESIZE */
+
+#ifdef __cplusplus
+extern "C" { void *malloc(unsigned); }
#else
-wenotbecray
+char *malloc();
#endif
-], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
-if test $ac_cv_os_cray = yes; then
-for ac_func in _getb67 GETB67 getb67; do
- AC_CHECK_FUNC($ac_func,
- [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func,
- [Define to one of _getb67, GETB67, getb67
- for Cray-2 and Cray-YMP systems.
- This function is required for alloca.c
- support on those systems.])
- break])
-done
-fi
-
-AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
-[AC_TRY_RUN(
-[find_stack_direction ()
-{
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
-}
int
main ()
{
- exit (find_stack_direction () < 0);
-}], ac_cv_c_stack_direction=1, ac_cv_c_stack_direction=-1,
- ac_cv_c_stack_direction=0)])
-AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
-fi
-AC_SUBST(ALLOCA)dnl
-])# AC_FUNC_ALLOCA
+ char *data, *data2, *data3;
+ int i, pagesize;
+ int fd;
+ pagesize = getpagesize ();
-# AC_FUNC_GETLOADAVG
-# ------------------
-AC_DEFUN(AC_FUNC_GETLOADAVG,
-[ac_have_func=no # yes means we've found a way to get the load average.
+ /* First, make a file with some known garbage in it. */
+ data = malloc (pagesize);
+ if (!data)
+ exit (1);
+ for (i = 0; i < pagesize; ++i)
+ *(data + i) = rand ();
+ umask (0);
+ fd = creat ("conftestmmap", 0600);
+ if (fd < 0)
+ exit (1);
+ if (write (fd, data, pagesize) != pagesize)
+ exit (1);
+ close (fd);
-# Some systems with -lutil have (and need) -lkvm as well, some do not.
-# On Solaris, -lkvm requires nlist from -lelf, so check that first
-# to get the right answer into the cache.
-AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
-AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
-AC_CHECK_LIB(kstat, kstat_open)
-# Check for the 4.4BSD definition of getloadavg.
-AC_CHECK_LIB(util, getloadavg,
- [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
+ /* Next, try to mmap the file at a fixed address which already has
+ something else allocated at it. If we can, also make sure that
+ we see the same garbage. */
+ fd = open ("conftestmmap", O_RDWR);
+ if (fd < 0)
+ exit (1);
+ data2 = malloc (2 * pagesize);
+ if (!data2)
+ exit (1);
+ data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
+ if (data2 != mmap (data2, pagesize, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_FIXED, fd, 0L))
+ exit (1);
+ for (i = 0; i < pagesize; ++i)
+ if (*(data + i) != *(data2 + i))
+ exit (1);
-if test $ac_have_func = no; then
- # There is a commonly available library for RS/6000 AIX.
- # Since it is not a standard part of AIX, it might be installed locally.
- ac_getloadavg_LIBS="$LIBS"; LIBS="-L/usr/local/lib $LIBS"
- AC_CHECK_LIB(getloadavg, getloadavg,
- LIBS="-lgetloadavg $LIBS", LIBS="$ac_getloadavg_LIBS")
+ /* Finally, make sure that changes to the mapped area do not
+ percolate back to the file as seen by read(). (This is a bug on
+ some variants of i386 svr4.0.) */
+ for (i = 0; i < pagesize; ++i)
+ *(data2 + i) = *(data2 + i) + 1;
+ data3 = malloc (pagesize);
+ if (!data3)
+ exit (1);
+ if (read (fd, data3, pagesize) != pagesize)
+ exit (1);
+ for (i = 0; i < pagesize; ++i)
+ if (*(data + i) != *(data3 + i))
+ exit (1);
+ close (fd);
+ unlink ("conftestmmap");
+ exit (0);
+}], ac_cv_func_mmap_fixed_mapped=yes, ac_cv_func_mmap_fixed_mapped=no,
+ac_cv_func_mmap_fixed_mapped=no)])
+if test $ac_cv_func_mmap_fixed_mapped = yes; then
+ AC_DEFINE(HAVE_MMAP, 1,
+ [Define if you have a working `mmap' system call.])
fi
+])# AC_FUNC_MMAP
-# Make sure it is really in the library, if we think we found it.
-AC_REPLACE_FUNCS(getloadavg)
-
-if test $ac_cv_func_getloadavg = yes; then
- AC_DEFINE(HAVE_GETLOADAVG, 1,
- [Define if your system has its own `getloadavg' function.])
- ac_have_func=yes
-else
- # Figure out what our getloadavg.c needs.
- ac_have_func=no
- AC_CHECK_HEADER(sys/dg_sys_info.h,
- [ac_have_func=yes;
- AC_DEFINE(DGUX, 1, [Define for DGUX with <sys/dg_sys_info.h>.])
- AC_CHECK_LIB(dgc, dg_sys_info)])
-
- # We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
- # uses stabs), but it is still SVR4. We cannot check for <elf.h> because
- # Irix 4.0.5F has the header but not the library.
- if test $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then
- ac_have_func=yes;
- AC_DEFINE(SVR4, 1,
- [Define on System V Release 4.])
- fi
-
- if test $ac_have_func = no; then
- AC_CHECK_HEADER(inq_stats/cpustats.h,
- [ac_have_func=yes;
- AC_DEFINE(UMAX, 1,
- [Define for Encore UMAX.])
- AC_DEFINE(UMAX4_3, 1,
- [Define for Encore UMAX 4.3 that has <inq_status/cpustats.h>
- instead of <sys/cpustats.h>.])])
- fi
-
- if test $ac_have_func = no; then
- AC_CHECK_HEADER(sys/cpustats.h,
- [ac_have_func=yes; AC_DEFINE(UMAX)])
- fi
-
- if test $ac_have_func = no; then
- AC_CHECK_HEADERS(mach/mach.h)
- fi
- AC_CHECK_HEADER(nlist.h,
- [AC_DEFINE(NLIST_STRUCT, 1, [Define if you have <nlist.h>.])
- AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un,
- [AC_TRY_COMPILE([#include <nlist.h>
-],
- [struct nlist n; n.n_un.n_name = 0;],
- ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)])
- if test $ac_cv_struct_nlist_n_un = yes; then
- AC_DEFINE(NLIST_NAME_UNION, 1,
- [Define if your `struct nlist' has an `n_un' member.])
- fi
- ])dnl
-fi # Do not have getloadavg in system libraries.
+# AC_FUNC_MEMCMP
+# --------------
+AC_DEFUN(AC_FUNC_MEMCMP,
+[AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean,
+[AC_TRY_RUN(
+[int
+main()
+{
+ char c0 = 0x40, c1 = 0x80, c2 = 0x81;
+ exit (memcmp(&c0, &c2, 1) < 0
+ && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
+}], ac_cv_func_memcmp_clean=yes, ac_cv_func_memcmp_clean=no,
+ac_cv_func_memcmp_clean=no)])
+test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}"
+AC_SUBST(LIBOBJS)dnl
+])# AC_FUNC_MEMCMP
-# Some definitions of getloadavg require that the program be installed setgid.
-dnl FIXME: Don't hardwire the path of getloadavg.c in the top-level directory.
-AC_CACHE_CHECK(whether getloadavg requires setgid,
- ac_cv_func_getloadavg_setgid,
-[AC_EGREP_CPP([Yowza Am I SETGID yet],
-[#include "$srcdir/getloadavg.c"
-#ifdef LDAV_PRIVILEGED
-Yowza Am I SETGID yet
-#endif],
- ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)])
-if test $ac_cv_func_getloadavg_setgid = yes; then
- NEED_SETGID=true;
- AC_DEFINE(GETLOADAVG_PRIVILEGED, 1,
- [Define if the `getloadavg' function needs to be run setuid
- or setgid.])
-else
- NEED_SETGID=false
-fi
-AC_SUBST(NEED_SETGID)dnl
-if test $ac_cv_func_getloadavg_setgid = yes; then
- AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
-[ # On Solaris, /dev/kmem is a symlink. Get info on the real file.
- ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
- # If we got an error (system does not support symlinks), try without -L.
- test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
- ac_cv_group_kmem=`echo $ac_ls_output \
- | sed -ne ['s/[ ][ ]*/ /g;
- s/^.[sSrwx-]* *[0-9]* *\([^0-9]*\) *.*/\1/;
- / /s/.* //;p;']`
-])
- KMEM_GROUP=$ac_cv_group_kmem
-fi
-AC_SUBST(KMEM_GROUP)dnl
-])# AC_FUNC_GETLOADAVG
+# AC_FUNC_SELECT_ARGTYPES
+# -----------------------
+AC_DEFUN(AC_FUNC_SELECT_ARGTYPES,
+[AC_MSG_CHECKING([types of arguments for select()])
+ AC_CACHE_VAL(ac_cv_func_select_arg234,dnl
+ [AC_CACHE_VAL(ac_cv_func_select_arg1,dnl
+ [AC_CACHE_VAL(ac_cv_func_select_arg5,dnl
+ [for ac_cv_func_select_arg234 in 'fd_set *' 'int *' 'void *'; do
+ for ac_cv_func_select_arg1 in 'int' 'size_t' 'unsigned long' 'unsigned'; do
+ for ac_cv_func_select_arg5 in 'struct timeval *' 'const struct timeval *'; do
+ AC_TRY_COMPILE(
+[#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#if HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+#if HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+extern select ($ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5);],,dnl
+ [ac_not_found=no ; break 3],ac_not_found=yes)
+ done
+ done
+ done
+ ])dnl AC_CACHE_VAL
+ ])dnl AC_CACHE_VAL
+ ])dnl AC_CACHE_VAL
+ if test "$ac_not_found" = yes; then
+ ac_cv_func_select_arg1=int
+ ac_cv_func_select_arg234='int *'
+ ac_cv_func_select_arg5='struct timeval *'
+ fi
+ AC_MSG_RESULT([$ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5])
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG1, $ac_cv_func_select_arg1,
+ [Define to the type of arg 1 for `select'.])
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG234, ($ac_cv_func_select_arg234),
+ [Define to the type of args 2, 3 and 4 for `select'.])
+ AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG5, ($ac_cv_func_select_arg5),
+ [Define to the type of arg 5 for `select'.])
+])# AC_FUNC_SELECT_ARGTYPES
-# AC_FUNC_UTIME_NULL
-# ------------------
-AC_DEFUN(AC_FUNC_UTIME_NULL,
-[AC_CACHE_CHECK(whether utime accepts a null argument, ac_cv_func_utime_null,
-[rm -f conftestdata; >conftestdata
-# Sequent interprets utime(file, 0) to mean use start of epoch. Wrong.
+# AC_FUNC_SETPGRP
+# ---------------
+AC_DEFUN(AC_FUNC_SETPGRP,
+[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
AC_TRY_RUN(
-[#include <sys/types.h>
-#include <sys/stat.h>
-int
-main()
-{
- struct stat s, t;
- exit (!(stat ("conftestdata", &s) == 0
- && utime ("conftestdata", (long *)0) == 0
- && stat ("conftestdata", &t) == 0
- && t.st_mtime >= s.st_mtime
- && t.st_mtime - s.st_mtime < 120));
-}], ac_cv_func_utime_null=yes, ac_cv_func_utime_null=no,
- ac_cv_func_utime_null=no)
-rm -f core core.* *.core])
-if test $ac_cv_func_utime_null = yes; then
- AC_DEFINE(HAVE_UTIME_NULL, 1,
- [Define if `utime(file, NULL)' sets file's timestamp to the
- present.])
-fi
-])# AC_FUNC_UTIME_NULL
+[#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+/* If this system has a BSD-style setpgrp, which takes arguments, exit
+ successfully. */
-# AC_FUNC_STRCOLL
-# ---------------
-AC_DEFUN(AC_FUNC_STRCOLL,
-[AC_CACHE_CHECK(for working strcoll, ac_cv_func_strcoll_works,
-[AC_TRY_RUN([#include <string.h>
int
main ()
{
- exit (strcoll ("abc", "def") >= 0 ||
- strcoll ("ABC", "DEF") >= 0 ||
- strcoll ("123", "456") >= 0);
-}], ac_cv_func_strcoll_works=yes, ac_cv_func_strcoll_works=no,
-ac_cv_func_strcoll_works=no)])
-if test $ac_cv_func_strcoll_works = yes; then
- AC_DEFINE(HAVE_STRCOLL, 1,
- [Define if you have the `strcoll' function and it is properly
- defined.])
+ if (setpgrp (1,1) == -1)
+ exit (0);
+ else
+ exit (1);
+}], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes,
+ AC_MSG_ERROR(cannot check setpgrp if cross compiling))
+)
+if test $ac_cv_func_setpgrp_void = yes; then
+ AC_DEFINE(SETPGRP_VOID, 1,
+ [Define if the `setpgrp' function takes no argument.])
fi
-])# AC_FUNC_STRCOLL
+])# AC_FUNC_SETPGRP
-# AC_FUNC_SETVBUF_REVERSED
-# ------------------------
-AC_DEFUN(AC_FUNC_SETVBUF_REVERSED,
-[AC_CACHE_CHECK(whether setvbuf arguments are reversed,
- ac_cv_func_setvbuf_reversed,
-[AC_TRY_RUN([#include <stdio.h>
-/* If setvbuf has the reversed format, exit 0. */
+# AC_FUNC_STRFTIME
+# ----------------
+AC_DEFUN(AC_FUNC_STRFTIME,
+[AC_CHECK_FUNC(strftime,
+ [AC_DEFINE(HAVE_STRFTIME, 1,
+ [Define if you have the `strftime' function.])],
+[# strftime is in -lintl on SCO UNIX.
+AC_CHECK_LIB(intl, strftime,
+[AC_DEFINE(HAVE_STRFTIME, 1,
+ [Define if you have the `strftime' function.])
+LIBS="-lintl $LIBS"])])dnl
+])# AC_FUNC_STRFTIME
+
+
+# AC_FUNC_VFORK
+# -------------
+AC_DEFUN(AC_FUNC_VFORK,
+[AC_REQUIRE([AC_TYPE_PID_T])dnl
+AC_CHECK_HEADER(vfork.h,
+ AC_DEFINE(HAVE_VFORK_H, 1,
+ [Define if you have <vfork.h>.]))
+AC_CACHE_CHECK(for working vfork, ac_cv_func_vfork_works,
+[AC_TRY_RUN([/* Thanks to Paul Eggert for this test. */
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#if HAVE_VFORK_H
+# include <vfork.h>
+#endif
+/* On some sparc systems, changes by the child to local and incoming
+ argument registers are propagated back to the parent. The compiler
+ is told about this with #include <vfork.h>, but some compilers
+ (e.g. gcc -O) don't grok <vfork.h>. Test for this by using a
+ static variable whose address is put into a register that is
+ clobbered by the vfork. */
+static
+#ifdef __cplusplus
+sparc_address_test (int arg)
+# else
+sparc_address_test (arg) int arg;
+#endif
+{
+ static pid_t child;
+ if (!child) {
+ child = vfork ();
+ if (child < 0) {
+ perror ("vfork");
+ _exit(2);
+ }
+ if (!child) {
+ arg = getpid();
+ write(-1, "", 0);
+ _exit (arg);
+ }
+ }
+}
+
int
main ()
{
- /* This call has the arguments reversed.
- A reversed system may check and see that the address of main
- is not _IOLBF, _IONBF, or _IOFBF, and return nonzero. */
- if (setvbuf(stdout, _IOLBF, (char *) main, BUFSIZ) != 0)
- exit(1);
- putc('\r', stdout);
- exit(0); /* Non-reversed systems segv here. */
-}], ac_cv_func_setvbuf_reversed=yes, ac_cv_func_setvbuf_reversed=no)
-rm -f core core.* *.core])
-if test $ac_cv_func_setvbuf_reversed = yes; then
- AC_DEFINE(SETVBUF_REVERSED, 1,
- [Define if the `setvbuf' function takes the buffering type as
- its second argument and the buffer pointer as the third, as on
- System V before release 3.])
-fi
-])# AC_FUNC_SETVBUF_REVERSED
-
-
-# AC_FUNC_GETMNTENT
-# -----------------
-AC_DEFUN(AC_FUNC_GETMNTENT,
-[# getmntent is in -lsun on Irix 4, -lseq on Dynix/PTX, -lgen on Unixware.
-AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS",
- [AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS",
- [AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])])
-AC_CHECK_FUNC(getmntent,
- [AC_DEFINE(HAVE_GETMNTENT, 1,
- [Define if you have the `getmntent' function.])])])
-
+ pid_t parent = getpid ();
+ pid_t child;
-# AC_FUNC_MKTIME
-# --------------
-AC_DEFUN(AC_FUNC_MKTIME,
-[AC_REQUIRE([AC_HEADER_TIME])dnl
-AC_CHECK_HEADERS(sys/time.h unistd.h)
-AC_CHECK_FUNCS(alarm)
-AC_CACHE_CHECK([for working mktime], ac_cv_func_working_mktime,
-[AC_TRY_RUN(
-[/* Test program from Paul Eggert and Tony Leneis. */
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
+ sparc_address_test ();
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+ child = vfork ();
-#if !HAVE_ALARM
-# define alarm(X) /* empty */
-#endif
+ if (child == 0) {
+ /* Here is another test for sparc vfork register problems. This
+ test uses lots of local variables, at least as many local
+ variables as main has allocated so far including compiler
+ temporaries. 4 locals are enough for gcc 1.40.3 on a Solaris
+ 4.1.3 sparc, but we use 8 to be safe. A buggy compiler should
+ reuse the register of parent for one of the local variables,
+ since it will think that parent can't possibly be used any more
+ in this routine. Assigning to the local variable will thus
+ munge parent in the parent process. */
+ pid_t
+ p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
+ p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
+ /* Convince the compiler that p..p7 are live; otherwise, it might
+ use the same hardware register for all 8 local variables. */
+ if (p != p1 || p != p2 || p != p3 || p != p4
+ || p != p5 || p != p6 || p != p7)
+ _exit(1);
-/* Work around redefinition to rpl_putenv by other config tests. */
-#undef putenv
+ /* On some systems (e.g. IRIX 3.3), vfork doesn't separate parent
+ from child file descriptors. If the child closes a descriptor
+ before it execs or exits, this munges the parent's descriptor
+ as well. Test for this by closing stdout in the child. */
+ _exit(close(fileno(stdout)) != 0);
+ } else {
+ int status;
+ struct stat st;
-static time_t time_t_max;
+ while (wait(&status) != child)
+ ;
+ exit(
+ /* Was there some problem with vforking? */
+ child < 0
-/* Values we'll use to set the TZ environment variable. */
-static const char *const tz_strings[] = {
- (const char *) 0, "TZ=GMT0", "TZ=JST-9",
- "TZ=EST+3EDT+2,M10.1.0/00:00:00,M2.3.0/00:00:00"
-};
-#define N_STRINGS (sizeof (tz_strings) / sizeof (tz_strings[0]))
+ /* Did the child fail? (This shouldn't happen.) */
+ || status
-/* Fail if mktime fails to convert a date in the spring-forward gap.
- Based on a problem report from Andreas Jaeger. */
-static void
-spring_forward_gap ()
-{
- /* glibc (up to about 1998-10-07) failed this test) */
- struct tm tm;
+ /* Did the vfork/compiler bug occur? */
+ || parent != getpid()
- /* Use the portable POSIX.1 specification "TZ=PST8PDT,M4.1.0,M10.5.0"
- instead of "TZ=America/Vancouver" in order to detect the bug even
- on systems that don't support the Olson extension, or don't have the
- full zoneinfo tables installed. */
- putenv ("TZ=PST8PDT,M4.1.0,M10.5.0");
+ /* Did the file descriptor bug occur? */
+ || fstat(fileno(stdout), &st) != 0
+ );
+ }
+}],
+ac_cv_func_vfork_works=yes, ac_cv_func_vfork_works=no, AC_CHECK_FUNC(vfork)
+ac_cv_func_vfork_works=$ac_cv_func_vfork)])
+if test "x$ac_cv_func_vfork_works" = xno; then
+ AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
+fi
+])# AC_FUNC_VFORK
- tm.tm_year = 98;
- tm.tm_mon = 3;
- tm.tm_mday = 5;
- tm.tm_hour = 2;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1;
- if (mktime (&tm) == (time_t)-1)
- exit (1);
-}
-static void
-mktime_test (now)
- time_t now;
-{
- struct tm *lt;
- if ((lt = localtime (&now)) && mktime (lt) != now)
- exit (1);
- now = time_t_max - now;
- if ((lt = localtime (&now)) && mktime (lt) != now)
- exit (1);
-}
+# AC_FUNC_VPRINTF
+# ---------------
+# Why the heck is that _doprnt does not define HAVE__DOPRNT???
+# That the logical name! In addition, why doesn't it use
+# AC_CHECK_FUNCS(vprintf)? Because old Autoconf uses sh for loops.
+# FIXME: To be changed in Autoconf 3?
+AC_DEFUN(AC_FUNC_VPRINTF,
+[AC_CHECK_FUNC(vprintf,
+ AC_DEFINE(HAVE_VPRINTF, 1,
+ [Define if you have the `vprintf' function.]))
+if test "$ac_cv_func_vprintf" != yes; then
+AC_CHECK_FUNC(_doprnt,
+ AC_DEFINE(HAVE_DOPRNT, 1,
+ [Define if you don't have `vprintf' but do have
+ `_doprnt.']))
+fi
+])
-static void
-irix_6_4_bug ()
-{
- /* Based on code from Ariel Faigon. */
- struct tm tm;
- tm.tm_year = 96;
- tm.tm_mon = 3;
- tm.tm_mday = 0;
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1;
- mktime (&tm);
- if (tm.tm_mon != 2 || tm.tm_mday != 31)
- exit (1);
-}
-static void
-bigtime_test (j)
- int j;
+# AC_FUNC_WAIT3
+# -------------
+AC_DEFUN(AC_FUNC_WAIT3,
+[AC_CACHE_CHECK(for wait3 that fills in rusage, ac_cv_func_wait3_rusage,
+[AC_TRY_RUN(
+[#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <stdio.h>
+/* HP-UX has wait3 but does not fill in rusage at all. */
+int
+main ()
{
- struct tm tm;
- time_t now;
- tm.tm_year = tm.tm_mon = tm.tm_mday = tm.tm_hour = tm.tm_min = tm.tm_sec = j;
- now = mktime (&tm);
- if (now != (time_t) -1)
+ struct rusage r;
+ int i;
+ /* Use a field that we can force nonzero --
+ voluntary context switches.
+ For systems like NeXT and OSF/1 that don't set it,
+ also use the system CPU time. And page faults (I/O) for Linux. */
+ r.ru_nvcsw = 0;
+ r.ru_stime.tv_sec = 0;
+ r.ru_stime.tv_usec = 0;
+ r.ru_majflt = r.ru_minflt = 0;
+ switch (fork ())
{
- struct tm *lt = localtime (&now);
- if (! (lt
- && lt->tm_year == tm.tm_year
- && lt->tm_mon == tm.tm_mon
- && lt->tm_mday == tm.tm_mday
- && lt->tm_hour == tm.tm_hour
- && lt->tm_min == tm.tm_min
- && lt->tm_sec == tm.tm_sec
- && lt->tm_yday == tm.tm_yday
- && lt->tm_wday == tm.tm_wday
- && ((lt->tm_isdst < 0 ? -1 : 0 < lt->tm_isdst)
- == (tm.tm_isdst < 0 ? -1 : 0 < tm.tm_isdst))))
- exit (1);
+ case 0: /* Child. */
+ sleep(1); /* Give up the CPU. */
+ _exit(0);
+ case -1: /* What can we do? */
+ _exit(0);
+ default: /* Parent. */
+ wait3(&i, 0, &r);
+ /* Avoid "text file busy" from rm on fast HP-UX machines. */
+ sleep(2);
+ exit (r.ru_nvcsw == 0 && r.ru_majflt == 0 && r.ru_minflt == 0
+ && r.ru_stime.tv_sec == 0 && r.ru_stime.tv_usec == 0);
}
-}
+}], ac_cv_func_wait3_rusage=yes, ac_cv_func_wait3_rusage=no,
+ac_cv_func_wait3_rusage=no)])
+if test $ac_cv_func_wait3_rusage = yes; then
+ AC_DEFINE(HAVE_WAIT3, 1,
+ [Define if you have the `wait3' system call.])
+fi
+])# AC_FUNC_WAIT3
+
+# AC_FUNC_UTIME_NULL
+# ------------------
+AC_DEFUN(AC_FUNC_UTIME_NULL,
+[AC_CACHE_CHECK(whether utime accepts a null argument, ac_cv_func_utime_null,
+[rm -f conftestdata; >conftestdata
+# Sequent interprets utime(file, 0) to mean use start of epoch. Wrong.
+AC_TRY_RUN(
+[#include <sys/types.h>
+#include <sys/stat.h>
int
-main ()
+main()
{
- time_t t, delta;
- int i, j;
-
- /* This test makes some buggy mktime implementations loop.
- Give up after 60 seconds; a mktime slower than that
- isn't worth using anyway. */
- alarm (60);
-
- for (time_t_max = 1; 0 < time_t_max; time_t_max *= 2)
- continue;
- time_t_max--;
- delta = time_t_max / 997; /* a suitable prime number */
- for (i = 0; i < N_STRINGS; i++)
- {
- if (tz_strings[i])
- putenv (tz_strings[i]);
-
- for (t = 0; t <= time_t_max - delta; t += delta)
- mktime_test (t);
- mktime_test ((time_t) 60 * 60);
- mktime_test ((time_t) 60 * 60 * 24);
-
- for (j = 1; 0 < j; j *= 2)
- bigtime_test (j);
- bigtime_test (j - 1);
- }
- irix_6_4_bug ();
- spring_forward_gap ();
- exit (0);
-}],
-ac_cv_func_working_mktime=yes, ac_cv_func_working_mktime=no,
-ac_cv_func_working_mktime=no)])
-if test $ac_cv_func_working_mktime = no; then
- LIBOBJS="$LIBOBJS mktime.${ac_objext}"
+ struct stat s, t;
+ exit (!(stat ("conftestdata", &s) == 0
+ && utime ("conftestdata", (long *)0) == 0
+ && stat ("conftestdata", &t) == 0
+ && t.st_mtime >= s.st_mtime
+ && t.st_mtime - s.st_mtime < 120));
+}], ac_cv_func_utime_null=yes, ac_cv_func_utime_null=no,
+ ac_cv_func_utime_null=no)
+rm -f core core.* *.core])
+if test $ac_cv_func_utime_null = yes; then
+ AC_DEFINE(HAVE_UTIME_NULL, 1,
+ [Define if `utime(file, NULL)' sets file's timestamp to the
+ present.])
fi
-])# AC_FUNC_MKTIME
+])# AC_FUNC_UTIME_NULL
-# AC_FUNC_STRFTIME
-# ----------------
-AC_DEFUN(AC_FUNC_STRFTIME,
-[AC_CHECK_FUNC(strftime,
- [AC_DEFINE(HAVE_STRFTIME, 1,
- [Define if you have the `strftime' function.])],
-[# strftime is in -lintl on SCO UNIX.
-AC_CHECK_LIB(intl, strftime,
-[AC_DEFINE(HAVE_STRFTIME, 1,
- [Define if you have the `strftime' function.])
-LIBS="-lintl $LIBS"])])dnl
-])# AC_FUNC_STRFTIME
+# AC_FUNC_STRCOLL
+# ---------------
+AC_DEFUN(AC_FUNC_STRCOLL,
+[AC_CACHE_CHECK(for working strcoll, ac_cv_func_strcoll_works,
+[AC_TRY_RUN([#include <string.h>
+int
+main ()
+{
+ exit (strcoll ("abc", "def") >= 0 ||
+ strcoll ("ABC", "DEF") >= 0 ||
+ strcoll ("123", "456") >= 0);
+}], ac_cv_func_strcoll_works=yes, ac_cv_func_strcoll_works=no,
+ac_cv_func_strcoll_works=no)])
+if test $ac_cv_func_strcoll_works = yes; then
+ AC_DEFINE(HAVE_STRCOLL, 1,
+ [Define if you have the `strcoll' function and it is properly
+ defined.])
+fi
+])# AC_FUNC_STRCOLL
-# AC_FUNC_MEMCMP
-# --------------
-AC_DEFUN(AC_FUNC_MEMCMP,
-[AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean,
-[AC_TRY_RUN(
-[int
-main()
+# AC_FUNC_SETVBUF_REVERSED
+# ------------------------
+AC_DEFUN(AC_FUNC_SETVBUF_REVERSED,
+[AC_CACHE_CHECK(whether setvbuf arguments are reversed,
+ ac_cv_func_setvbuf_reversed,
+[AC_TRY_RUN([#include <stdio.h>
+/* If setvbuf has the reversed format, exit 0. */
+int
+main ()
{
- char c0 = 0x40, c1 = 0x80, c2 = 0x81;
- exit (memcmp(&c0, &c2, 1) < 0
- && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
-}], ac_cv_func_memcmp_clean=yes, ac_cv_func_memcmp_clean=no,
-ac_cv_func_memcmp_clean=no)])
-test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}"
-AC_SUBST(LIBOBJS)dnl
-])# AC_FUNC_MEMCMP
-
+ /* This call has the arguments reversed.
+ A reversed system may check and see that the address of main
+ is not _IOLBF, _IONBF, or _IOFBF, and return nonzero. */
+ if (setvbuf(stdout, _IOLBF, (char *) main, BUFSIZ) != 0)
+ exit(1);
+ putc('\r', stdout);
+ exit(0); /* Non-reversed systems segv here. */
+}], ac_cv_func_setvbuf_reversed=yes, ac_cv_func_setvbuf_reversed=no)
+rm -f core core.* *.core])
+if test $ac_cv_func_setvbuf_reversed = yes; then
+ AC_DEFINE(SETVBUF_REVERSED, 1,
+ [Define if the `setvbuf' function takes the buffering type as
+ its second argument and the buffer pointer as the third, as on
+ System V before release 3.])
+fi
+])# AC_FUNC_SETVBUF_REVERSED
-# AC_FUNC_SELECT_ARGTYPES
-# -----------------------
-AC_DEFUN(AC_FUNC_SELECT_ARGTYPES,
-[AC_MSG_CHECKING([types of arguments for select()])
- AC_CACHE_VAL(ac_cv_func_select_arg234,dnl
- [AC_CACHE_VAL(ac_cv_func_select_arg1,dnl
- [AC_CACHE_VAL(ac_cv_func_select_arg5,dnl
- [for ac_cv_func_select_arg234 in 'fd_set *' 'int *' 'void *'; do
- for ac_cv_func_select_arg1 in 'int' 'size_t' 'unsigned long' 'unsigned'; do
- for ac_cv_func_select_arg5 in 'struct timeval *' 'const struct timeval *'; do
- AC_TRY_COMPILE(dnl
-[#if HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-#if HAVE_SYS_TIME_H
-# include <sys/time.h>
-#endif
-#if HAVE_SYS_SELECT_H
-# include <sys/select.h>
-#endif
-#if HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-extern select ($ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5);],,dnl
- [ac_not_found=no ; break 3],ac_not_found=yes)
- done
- done
- done
- ])dnl AC_CACHE_VAL
- ])dnl AC_CACHE_VAL
- ])dnl AC_CACHE_VAL
- if test "$ac_not_found" = yes; then
- ac_cv_func_select_arg1=int
- ac_cv_func_select_arg234='int *'
- ac_cv_func_select_arg5='struct timeval *'
- fi
- AC_MSG_RESULT([$ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5])
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG1, $ac_cv_func_select_arg1,
- [Define to the type of arg1 for `select'.])
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG234, ($ac_cv_func_select_arg234),
- [Define to the type of args 2, 3 and 4 for `select'.])
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG5, ($ac_cv_func_select_arg5),
- [Define to the type of arg5 for `select'.])
-])# AC_FUNC_SELECT_ARGTYPES
## ------------------------------ ##
-# AC_HEADER_TIME
-# --------------
-AC_DEFUN(AC_HEADER_TIME,
-[AC_CACHE_CHECK([whether time.h and sys/time.h may both be included],
- ac_cv_header_time,
-[AC_TRY_COMPILE([#include <sys/types.h>
-#include <sys/time.h>
-#include <time.h>
-],
-[struct tm *tp;], ac_cv_header_time=yes, ac_cv_header_time=no)])
-if test $ac_cv_header_time = yes; then
- AC_DEFINE(TIME_WITH_SYS_TIME, 1,
- [Define if you can safely include both <sys/time.h> and <time.h>.])
-fi
-])# AC_HEADER_TIME
-
-
# AC_STRUCT_TM
# ------------
# FIXME: This macro is badly named, it should be AC_CHECK_TYPE_STRUCT_TM.
])# AC_C_PROTOTYPES
-# AC_OBJEXT
-# ---------
-# Check the object extension used by the compiler: typically .o or
-# .obj. If this is called, some other behaviour will change,
-# determined by ac_objext.
-AC_DEFUN(AC_OBJEXT,
-[AC_MSG_CHECKING([for object suffix])
-AC_CACHE_VAL(ac_cv_objext,
-[rm -f conftest*
-echo 'int i = 1;' >conftest.$ac_ext
-if AC_TRY_EVAL(ac_compile); then
- for ac_file in conftest.*; do
- case $ac_file in
- *.c) ;;
- *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;;
- esac
- done
-else
- AC_MSG_ERROR([installation or configuration problem; compiler does not work])
-fi
-rm -f conftest*])
-AC_MSG_RESULT($ac_cv_objext)
-OBJEXT=$ac_cv_objext
-ac_objext=$ac_cv_objext
-AC_SUBST(OBJEXT)])
+
+
+## ----------------------------------------- ##
+## Checks for F77 compiler characteristics. ##
+## ----------------------------------------- ##
# AC_F77_LIBRARY_LDFLAGS
])# AC_EXEEXT
+# AC_OBJEXT
+# ---------
+# Check the object extension used by the compiler: typically .o or
+# .obj. If this is called, some other behaviour will change,
+# determined by ac_objext.
+AC_DEFUN(AC_OBJEXT,
+[AC_MSG_CHECKING([for object suffix])
+AC_CACHE_VAL(ac_cv_objext,
+[rm -f conftest*
+echo 'int i = 1;' >conftest.$ac_ext
+if AC_TRY_EVAL(ac_compile); then
+ for ac_file in conftest.*; do
+ case $ac_file in
+ *.c) ;;
+ *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;;
+ esac
+ done
+else
+ AC_MSG_ERROR([installation or configuration problem; compiler does not work])
+fi
+rm -f conftest*])
+AC_MSG_RESULT($ac_cv_objext)
+OBJEXT=$ac_cv_objext
+ac_objext=$ac_cv_objext
+AC_SUBST(OBJEXT)])
+
+
## -------------------------- ##
projects / thirdparty / autoconf.git / commitdiff
