Fix the compatibility of the compiling macros with C++.
* acgeneral.m4 (AC_TRY_COMPILE, AC_TRY_LINK, AC_CHECK_SIZEOF): Use
`int main () {...}', instead of `main () {...}'.
* acspecific.m4 (AC_TYPE_GETGROUPS, AC_FUNC_CLOSEDIR_VOID,
AC_FUNC_FNMATCH, AC_FUNC_GETPGRP, AC_FUNC_SETPGRP, AC_FUNC_VFORK,
AC_FUNC_WAIT3, AC_FUNC_ALLOCA, AC_FUNC_UTIME_NULL,
AC_FUNC_SETVBUF_REVERSED, AC_FUNC_MEMCMP, AC_C_CHAR_UNSIGNED,
AC_C_LONG_DOUBLE, AC_C_BIGENDIAN, AC_SYS_RESTARTABLE_SYSCALLS):
Likewise.
* acspecific.m4 (AC_FUNC_FNMATCH): Call
AC_CHECK_HEADERS(fnmatch.h), and include fnmatch.h in the compiled
code.
+1999-10-31 Akim Demaille <akim@epita.fr>
+
+ Fix the compatibility of the compiling macros with C++.
+
+ * acgeneral.m4 (AC_TRY_COMPILE, AC_TRY_LINK, AC_CHECK_SIZEOF): Use
+ `int main () {...}', instead of `main () {...}'.
+ * acspecific.m4 (AC_TYPE_GETGROUPS, AC_FUNC_CLOSEDIR_VOID,
+ AC_FUNC_FNMATCH, AC_FUNC_GETPGRP, AC_FUNC_SETPGRP, AC_FUNC_VFORK,
+ AC_FUNC_WAIT3, AC_FUNC_ALLOCA, AC_FUNC_UTIME_NULL,
+ AC_FUNC_SETVBUF_REVERSED, AC_FUNC_MEMCMP, AC_C_CHAR_UNSIGNED,
+ AC_C_LONG_DOUBLE, AC_C_BIGENDIAN, AC_SYS_RESTARTABLE_SYSCALLS):
+ Likewise.
+ * acspecific.m4 (AC_FUNC_FNMATCH): Call
+ AC_CHECK_HEADERS(fnmatch.h), and include fnmatch.h in the compiled
+ code.
+
1999-10-31 Akim Demaille <akim@epita.fr>
* acgeneral.m4 (AC_COMPILE_CHECK, AC_TRY_COMPILE,
[#]line __oline__ "configure"
#include "confdefs.h"
[$1]
-int main() {
+int
+main ()
+{
+dnl Do *not* indent the following line: there may be CPP directives.
+dnl Don't move the `;' right after for the same reason.
[$2]
-; return 0; }
+ ;
+ return 0;
+}
])EOF
if AC_TRY_EVAL(ac_compile); then
ifelse([$3], , :, [rm -rf conftest*
end
],
[dnl This sometimes fails to find confdefs.h, for some reason.
-dnl [#]line __oline__ "[$]0"
-[#]line __oline__ "configure"
+dnl @PND@line __oline__ "[$]0"
+@PND@line __oline__ "configure"
#include "confdefs.h"
[$1]
-int main() {
+int
+main()
+{
+dnl Do *not* indent the following line: there may be CPP directives.
+dnl Don't move the `;' right after for the same reason.
[$2]
-; return 0; }
+ ;
+ return 0;
+}
])EOF
if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
ifelse([$3], , :, [rm -rf conftest*
fi
])
-dnl Like AC_TRY_RUN but assumes a native-environment (non-cross) compiler.
+
dnl AC_TRY_RUN_NATIVE(PROGRAM, [ACTION-IF-TRUE [, ACTION-IF-FALSE]])
+dnl ----------------------------------------------------------------
+dnl Like AC_TRY_RUN but assumes a native-environment (non-cross) compiler.
AC_DEFUN(AC_TRY_RUN_NATIVE,
[cat >conftest.$ac_ext <<EOF
-[#]line __oline__ "configure"
+@PND@line __oline__ "configure"
#include "confdefs.h"
ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
extern "C" void exit(int);
AC_CACHE_CHECK([size of $1], ac_Sizeof,
[AC_TRY_RUN([#include <stdio.h>
[$3]
-main()
+int
+main ()
{
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
#define NGID 256
#undef MAX
#define MAX(x, y) ((x) > (y) ? (x) : (y))
+int
main()
{
gid_t gidset[NGID];
AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
[AC_REQUIRE([AC_HEADER_DIRENT])dnl
AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
-[AC_TRY_RUN([#include <sys/types.h>
+[AC_TRY_RUN(
+[#include <sys/types.h>
#include <$ac_header_dirent>
-int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
+
+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)])
fi
])
+dnl AC_FUNC_FNMATCH
+dnl ---------------
+dnl We look for fnmatch.h to avoid that the test fails in C++.
AC_DEFUN(AC_FUNC_FNMATCH,
-[AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works,
+[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([main() { exit (fnmatch ("a*", "abc", 0) != 0); }],
+[AC_TRY_RUN(
+[#if HAVE_FNMATCH_H
+# include <fnmatch.h>
+#endif
+
+int
+main()
+{
+ exit (fnmatch ("a*", "abc", 0) != 0);
+}],
ac_cv_func_fnmatch_works=yes, ac_cv_func_fnmatch_works=no,
ac_cv_func_fnmatch_works=no)])
if test $ac_cv_func_fnmatch_works = yes; then
AC_DEFINE(HAVE_FNMATCH, 1,
[Define if your system has a working `fnmatch' function.])
fi
-])
+])dnl AC_FUNC_FNMATCH
+
dnl AC_FUNC_MMAP
dnl ------------
int pg1, pg2, pg3, pg4;
int ng, np, s, child;
-main()
+int
+main ()
{
pid = getpid();
pg1 = getpgrp(0);
fi
])dnl AC_FUNC_GETPGRP
+
+dnl AC_FUNC_SETPGRP
+dnl ---------------
AC_DEFUN(AC_FUNC_SETPGRP,
[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
-AC_TRY_RUN([
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
+AC_TRY_RUN(
+[#ifdef HAVE_UNISTD_H
+# include <unistd.h>
#endif
-/*
- * If this system has a BSD-style setpgrp, which takes arguments, exit
- * successfully.
- */
-main()
+/* If this system has a BSD-style setpgrp, which takes arguments, exit
+ successfully. */
+
+int
+main ()
{
- if (setpgrp(1,1) == -1)
- exit(0);
- else
- exit(1);
-}
-], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes,
+ 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 $ac_cv_func_setpgrp_void = yes; then
AC_DEFINE(SETPGRP_VOID, 1,
[Define if the `setpgrp' function takes no argument.])
fi
-])
+])dnl AC_FUNC_SETPGRP
+
+dnl AC_FUNC_VPRINTF
+dnl ---------------
dnl Why the heck is that _doprnt does not define HAVE__DOPRNT???
dnl That the logical name! In addition, why doesn't it use
dnl AC_CHECK_FUNCS(vprintf)? Because old Autoconf uses sh for loops.
}
}
}
-main() {
+
+int
+main ()
+{
pid_t parent = getpid ();
pid_t child;
if test "x$ac_cv_func_vfork_works" = xno; then
AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
fi
-])
+])dnl AC_FUNC_VFORK
+
+dnl AC_FUNC_WAIT3
+dnl -------------
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>
+[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. */
-main() {
+int
+main()
+{
struct rusage r;
int i;
/* Use a field that we can force nonzero --
else
return (&dummy > addr) ? 1 : -1;
}
+int
main ()
{
exit (find_stack_direction() < 0);
[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>
+AC_TRY_RUN(
+[#include <sys/types.h>
#include <sys/stat.h>
-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));
+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])
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 ||
ac_cv_func_setvbuf_reversed,
[AC_TRY_RUN([#include <stdio.h>
/* If setvbuf has the reversed format, exit 0. */
-main () {
+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. */
dnl --------------
AC_DEFUN(AC_FUNC_MEMCMP,
[AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean,
-[AC_TRY_RUN([
+[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,
+ 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_TRY_RUN(
[/* volatile prevents gcc2 from optimizing the test away on sparcs. */
#if !defined(__STDC__) || __STDC__ != 1
-#define volatile
+# define volatile
#endif
-main() {
- volatile char c = 255; exit(c < 0);
+int
+main()
+{
+ volatile char c = 255;
+ exit(c < 0);
}], ac_cv_c_char_unsigned=yes, ac_cv_c_char_unsigned=no)
fi])
if test $ac_cv_c_char_unsigned = yes && test "$GCC" != yes; then
#endif
], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)])
if test $ac_cv_c_bigendian = unknown; then
-AC_TRY_RUN([main () {
+AC_TRY_RUN(
+[int
+main ()
+{
/* Are we little or big endian? From Harbison&Steele. */
union
{
[Define as `__inline' if that's what the C compiler
calls it, or to nothing if it is not supported.]) ;;
esac
-])
+])dnl AC_C_INLINE
dnl AC_C_CONST
fi
])
+
+dnl AC_SYS_RESTARTABLE_SYSCALLS
+dnl ---------------------------
AC_DEFUN(AC_SYS_RESTARTABLE_SYSCALLS,
[AC_CACHE_CHECK(for restartable system calls, ac_cv_sys_restartable_syscalls,
[AC_TRY_RUN(
#include <sys/types.h>
#include <signal.h>
ucatch (isig) { }
-main () {
+int
+main ()
+{
int i = fork (), status;
if (i == 0) { sleep (3); kill (getppid (), SIGINT); sleep (3); exit (0); }
signal (SIGINT, ucatch);
status = wait(&i);
if (status == -1) wait(&i);
exit (status == -1);
-}
-], ac_cv_sys_restartable_syscalls=yes, ac_cv_sys_restartable_syscalls=no)])
+}], ac_cv_sys_restartable_syscalls=yes, ac_cv_sys_restartable_syscalls=no)])
if test $ac_cv_sys_restartable_syscalls = yes; then
AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS, 1,
[Define if system calls automatically restart after interruption
by a signal.])
fi
-])
+])dnl AC_SYS_RESTARTABLE_SYSCALLS
+
+dnl AC_PATH_X
+dnl ---------
AC_DEFUN(AC_PATH_X,
[AC_REQUIRE_CPP()dnl Set CPP; we run AC_PATH_X_DIRECT conditionally.
# If we find X, set shell vars x_includes and x_libraries to the
[#]line __oline__ "configure"
#include "confdefs.h"
[$1]
-int main() {
+int
+main ()
+{
+dnl Do *not* indent the following line: there may be CPP directives.
+dnl Don't move the `;' right after for the same reason.
[$2]
-; return 0; }
+ ;
+ return 0;
+}
])EOF
if AC_TRY_EVAL(ac_compile); then
ifelse([$3], , :, [rm -rf conftest*
end
],
[dnl This sometimes fails to find confdefs.h, for some reason.
-dnl [#]line __oline__ "[$]0"
-[#]line __oline__ "configure"
+dnl @PND@line __oline__ "[$]0"
+@PND@line __oline__ "configure"
#include "confdefs.h"
[$1]
-int main() {
+int
+main()
+{
+dnl Do *not* indent the following line: there may be CPP directives.
+dnl Don't move the `;' right after for the same reason.
[$2]
-; return 0; }
+ ;
+ return 0;
+}
])EOF
if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
ifelse([$3], , :, [rm -rf conftest*
fi
])
-dnl Like AC_TRY_RUN but assumes a native-environment (non-cross) compiler.
+
dnl AC_TRY_RUN_NATIVE(PROGRAM, [ACTION-IF-TRUE [, ACTION-IF-FALSE]])
+dnl ----------------------------------------------------------------
+dnl Like AC_TRY_RUN but assumes a native-environment (non-cross) compiler.
AC_DEFUN(AC_TRY_RUN_NATIVE,
[cat >conftest.$ac_ext <<EOF
-[#]line __oline__ "configure"
+@PND@line __oline__ "configure"
#include "confdefs.h"
ifelse(AC_LANG, CPLUSPLUS, [#ifdef __cplusplus
extern "C" void exit(int);
AC_CACHE_CHECK([size of $1], ac_Sizeof,
[AC_TRY_RUN([#include <stdio.h>
[$3]
-main()
+int
+main ()
{
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
#define NGID 256
#undef MAX
#define MAX(x, y) ((x) > (y) ? (x) : (y))
+int
main()
{
gid_t gidset[NGID];
AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
[AC_REQUIRE([AC_HEADER_DIRENT])dnl
AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
-[AC_TRY_RUN([#include <sys/types.h>
+[AC_TRY_RUN(
+[#include <sys/types.h>
#include <$ac_header_dirent>
-int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
+
+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)])
fi
])
+dnl AC_FUNC_FNMATCH
+dnl ---------------
+dnl We look for fnmatch.h to avoid that the test fails in C++.
AC_DEFUN(AC_FUNC_FNMATCH,
-[AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works,
+[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([main() { exit (fnmatch ("a*", "abc", 0) != 0); }],
+[AC_TRY_RUN(
+[#if HAVE_FNMATCH_H
+# include <fnmatch.h>
+#endif
+
+int
+main()
+{
+ exit (fnmatch ("a*", "abc", 0) != 0);
+}],
ac_cv_func_fnmatch_works=yes, ac_cv_func_fnmatch_works=no,
ac_cv_func_fnmatch_works=no)])
if test $ac_cv_func_fnmatch_works = yes; then
AC_DEFINE(HAVE_FNMATCH, 1,
[Define if your system has a working `fnmatch' function.])
fi
-])
+])dnl AC_FUNC_FNMATCH
+
dnl AC_FUNC_MMAP
dnl ------------
int pg1, pg2, pg3, pg4;
int ng, np, s, child;
-main()
+int
+main ()
{
pid = getpid();
pg1 = getpgrp(0);
fi
])dnl AC_FUNC_GETPGRP
+
+dnl AC_FUNC_SETPGRP
+dnl ---------------
AC_DEFUN(AC_FUNC_SETPGRP,
[AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
-AC_TRY_RUN([
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
+AC_TRY_RUN(
+[#ifdef HAVE_UNISTD_H
+# include <unistd.h>
#endif
-/*
- * If this system has a BSD-style setpgrp, which takes arguments, exit
- * successfully.
- */
-main()
+/* If this system has a BSD-style setpgrp, which takes arguments, exit
+ successfully. */
+
+int
+main ()
{
- if (setpgrp(1,1) == -1)
- exit(0);
- else
- exit(1);
-}
-], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes,
+ 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 $ac_cv_func_setpgrp_void = yes; then
AC_DEFINE(SETPGRP_VOID, 1,
[Define if the `setpgrp' function takes no argument.])
fi
-])
+])dnl AC_FUNC_SETPGRP
+
+dnl AC_FUNC_VPRINTF
+dnl ---------------
dnl Why the heck is that _doprnt does not define HAVE__DOPRNT???
dnl That the logical name! In addition, why doesn't it use
dnl AC_CHECK_FUNCS(vprintf)? Because old Autoconf uses sh for loops.
}
}
}
-main() {
+
+int
+main ()
+{
pid_t parent = getpid ();
pid_t child;
if test "x$ac_cv_func_vfork_works" = xno; then
AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
fi
-])
+])dnl AC_FUNC_VFORK
+
+dnl AC_FUNC_WAIT3
+dnl -------------
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>
+[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. */
-main() {
+int
+main()
+{
struct rusage r;
int i;
/* Use a field that we can force nonzero --
else
return (&dummy > addr) ? 1 : -1;
}
+int
main ()
{
exit (find_stack_direction() < 0);
[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>
+AC_TRY_RUN(
+[#include <sys/types.h>
#include <sys/stat.h>
-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));
+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])
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 ||
ac_cv_func_setvbuf_reversed,
[AC_TRY_RUN([#include <stdio.h>
/* If setvbuf has the reversed format, exit 0. */
-main () {
+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. */
dnl --------------
AC_DEFUN(AC_FUNC_MEMCMP,
[AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean,
-[AC_TRY_RUN([
+[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,
+ 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_TRY_RUN(
[/* volatile prevents gcc2 from optimizing the test away on sparcs. */
#if !defined(__STDC__) || __STDC__ != 1
-#define volatile
+# define volatile
#endif
-main() {
- volatile char c = 255; exit(c < 0);
+int
+main()
+{
+ volatile char c = 255;
+ exit(c < 0);
}], ac_cv_c_char_unsigned=yes, ac_cv_c_char_unsigned=no)
fi])
if test $ac_cv_c_char_unsigned = yes && test "$GCC" != yes; then
#endif
], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)])
if test $ac_cv_c_bigendian = unknown; then
-AC_TRY_RUN([main () {
+AC_TRY_RUN(
+[int
+main ()
+{
/* Are we little or big endian? From Harbison&Steele. */
union
{
[Define as `__inline' if that's what the C compiler
calls it, or to nothing if it is not supported.]) ;;
esac
-])
+])dnl AC_C_INLINE
dnl AC_C_CONST
fi
])
+
+dnl AC_SYS_RESTARTABLE_SYSCALLS
+dnl ---------------------------
AC_DEFUN(AC_SYS_RESTARTABLE_SYSCALLS,
[AC_CACHE_CHECK(for restartable system calls, ac_cv_sys_restartable_syscalls,
[AC_TRY_RUN(
#include <sys/types.h>
#include <signal.h>
ucatch (isig) { }
-main () {
+int
+main ()
+{
int i = fork (), status;
if (i == 0) { sleep (3); kill (getppid (), SIGINT); sleep (3); exit (0); }
signal (SIGINT, ucatch);
status = wait(&i);
if (status == -1) wait(&i);
exit (status == -1);
-}
-], ac_cv_sys_restartable_syscalls=yes, ac_cv_sys_restartable_syscalls=no)])
+}], ac_cv_sys_restartable_syscalls=yes, ac_cv_sys_restartable_syscalls=no)])
if test $ac_cv_sys_restartable_syscalls = yes; then
AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS, 1,
[Define if system calls automatically restart after interruption
by a signal.])
fi
-])
+])dnl AC_SYS_RESTARTABLE_SYSCALLS
+
+dnl AC_PATH_X
+dnl ---------
AC_DEFUN(AC_PATH_X,
[AC_REQUIRE_CPP()dnl Set CPP; we run AC_PATH_X_DIRECT conditionally.
# If we find X, set shell vars x_includes and x_libraries to the
projects / thirdparty / autoconf.git / commitdiff
