MAKEINFO = makeinfo
TEXI2DVI = texi2dvi
M4 = @M4@
+AWK = @AWK@
PERL = @PERL@
# Programs that are always installed.
testsuite/lib/*.exp testsuite/autoconf.[gs]/*.exp \
standards.texi make-stds.texi standards.info*
-editsh = sed -e 's,@''datadir''@,$(acdatadir),g' -e 's,@''M4''@,$(M4),g'
+editsh = sed -e 's,@''datadir''@,$(acdatadir),g' -e \
+ 's,@''M4''@,$(M4),g' -e 's,@''AWK''@,$(AWK),g'
editpl = sed -e 's,@''datadir''@,$(acdatadir),g' -e 's,@''PERL''@,$(PERL),g'
all: ${SCRIPTS}
Major changes in release 2.2:
+* The ifnames utility is much faster but requires a "new awk" interpreter.
+* AC_CHECK_LIB and AC_HAVE_LIBRARY check and add the new
+ library before existing libs, not after, in case it uses them.
+* New macros: AC_FUNC_GETPGRP, AC_CHECK_TOOL.
+* Many additions to the TODO file :-)
+* Lots of bug fixes.
\f
Major changes in release 2.1:
------------------------------------------------------------------------------
Look at contributions:
- ifnames rewrite using nawk (Paul Eggert)
ac_include (Karl Berry)
- tool_prefix (Roland McGrath)
aclocal.h tom@basil.icce.rug.NL (Tom R.Hageman)
- inline rewrite (Jim Avera)
- getpgrp and stringize (Arnold Robbins)
- caching AC_DECL_YYTEXT (Karl Berry, John something)
------------------------------------------------------------------------------
------------------------------------------------------------------------------
-Handle trailing slashes in PATH elements in AC_CHECK_PROG,
-AC_PATH_PROG, AC_PROG_INSTALL.
-
-------------------------------------------------------------------------------
-
In libc and make in aclocal.m4 I have AC_CHECK_SYMBOL, which checks for
sys_siglist et al. Using AC_CHECK_FUNC doesn't work on some system that
winds up caring that you reference it as a function and it is really a
ends up a bad idea, we can have it take an arg with the C decl, but that is
a bit verbose to write if it's actually superfluous.
From Roland McGrath.
-
-------------------------------------------------------------------------------
-
-In /gd4/gnu/hurd/aclocal.m4 I wrote AC_CHECK_TOOL, which is a boon when
-doing a lot of cross compilation, and I think a good thing to use
-generically (AC_PROG_{CC,RANLIB} should use it). I want this merged so I
-can convert mach4's configure.in to stop using local hack macros, and
-finally get a configure.in up for hurd (and then rewrite its makefiles
-again).
-From Roland McGrath.
+[I'd call it AC_CHECK_VAR, I think. -djm]
------------------------------------------------------------------------------
/* Define if the `getloadavg' function needs to be run setuid or setgid. */
#undef GETLOADAVG_PRIVILEGED
+/* Define if the `getpgrp' function takes no argument. */
+#undef GETPGRP_VOID
+
/* Define to `int' if <sys/types.h> doesn't define. */
#undef gid_t
AC_CANONICAL_BUILD
test "$host_alias" != "$target_alias" &&
test "$program_prefix$program_suffix$program_transform_name" = \
- NONENONEs,x,x, && program_prefix=${target_alias}-
+ NONENONEs,x,x, &&
+ program_prefix=${target_alias}-
])
dnl Subroutines of AC_CANONICAL_SYSTEM.
AC_MSG_CHECKING(host system type)
+dnl Set host_alias.
host_alias=$host
case "$host_alias" in
NONE)
esac ;;
esac
+dnl Set the other host vars.
host=`$ac_config_sub $host_alias`
host_cpu=`echo $host | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
host_vendor=`echo $host | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
AC_MSG_CHECKING(target system type)
+dnl Set target_alias.
target_alias=$target
case "$target_alias" in
NONE)
esac ;;
esac
+dnl Set the other target vars.
target=`$ac_config_sub $target_alias`
target_cpu=`echo $target | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
target_vendor=`echo $target | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
AC_MSG_CHECKING(build system type)
+dnl Set build_alias.
build_alias=$build
case "$build_alias" in
NONE)
esac ;;
esac
+dnl Set the other build vars.
build=`$ac_config_sub $build_alias`
build_cpu=`echo $build | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
build_vendor=`echo $build | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
ifelse([$3], , , [test -n "[$]$1" || $1="$3"
])])
+dnl Internal subroutine.
+AC_DEFUN(AC_CHECK_TOOL_PREFIX,
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+if test $host != $build; then
+ ac_tool_prefix=${host_alias}-
+else
+ ac_tool_prefix=
+fi
+])
+
+dnl AC_CHECK_TOOL(VARIABLE, PROG-TO-CHECK-FOR)
+AC_DEFUN(AC_CHECK_TOOL,
+[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl
+AC_CHECK_PROG($1, ${ac_tool_prefix}$2, ${ac_tool_prefix}$2, $2)
+])
+
dnl Guess the value for the `prefix' variable by looking for
dnl the argument program along PATH and taking its parent.
dnl Example: if the argument is `gcc' and we find /usr/local/gnu/bin/gcc,
AC_PATH_PROG(AC_VAR_NAME, $1)
changequote(<<, >>)dnl
if test -n "$ac_cv_path_<<>>AC_VAR_NAME"; then
- prefix=`echo $ac_cv_path_<<>>AC_VAR_NAME|sed 's%/[^/][^/]*/[^/][^/]*$%%'`
+ prefix=`echo $ac_cv_path_<<>>AC_VAR_NAME|sed 's%/[^/][^/]*//*[^/][^/]*$%%'`
changequote([, ])dnl
fi
fi
AC_DEFUN(AC_PROG_RANLIB,
[AC_CHECK_PROG(RANLIB, ranlib, ranlib, :)])
-dnl Check for mawk first since it's said to be faster.
+dnl Check for mawk first since it's generally faster.
AC_DEFUN(AC_PROG_AWK,
[AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )])
fi
AC_SUBST(LEXLIB)])
+dnl Check if lex declares yytext as a char * by default, not a char[].
+undefine([AC_DECL_YYTEXT])
AC_DEFUN(AC_DECL_YYTEXT,
[AC_REQUIRE_CPP()dnl
AC_REQUIRE([AC_PROG_LEX])dnl
+AC_MSG_CHECKING(lex output file root)
+AC_CACHE_VAL(ac_cv_prog_lex_root,
+[# The minimal lex program is just a single line: %%. But some broken lexes
+# (Solaris, I think it was) want two %% lines, so accommodate them.
+echo '%%
+%%' | $LEX
+if test -f lex.yy.c; then
+ ac_cv_prog_lex_root=lex.yy
+elif test -f lexyy.c; then
+ ac_cv_prog_lex_root=lexyy
+else
+ AC_MSG_ERROR(cannot find output from $LEX; giving up)
+fi])dnl
+LEX_OUTPUT_ROOT=$ac_cv_prog_lex_root
+AC_MSG_RESULT($ac_cv_prog_lex_root)
+AC_SUBST(LEX_OUTPUT_ROOT)dnl
+
AC_MSG_CHECKING(whether yytext is a pointer)
AC_CACHE_VAL(ac_cv_prog_lex_yytext_pointer,
[# POSIX says lex can declare yytext either as a pointer or an array; the
# default is implementation-dependent. Figure out which it is, since
# not all implementations provide the %pointer and %array declarations.
-#
-# The minimal lex program is just a single line: %%. But some broken lexes
-# (Solaris, I think it was) want two %% lines, so accommodate them.
ac_cv_prog_lex_yytext_pointer=no
- echo '%%
-%%' | $LEX
-if test -f lex.yy.c; then
- LEX_OUTPUT_ROOT=lex.yy
-elif test -f lexyy.c; then
- LEX_OUTPUT_ROOT=lexyy
-else
- AC_MSG_ERROR([cannot find output from $LEX, giving up])
-fi
echo 'extern char *yytext;' >>$LEX_OUTPUT_ROOT.c
ac_save_LIBS="$LIBS"
LIBS="$LIBS $LEXLIB"
if test $ac_cv_prog_lex_yytext_pointer = yes; then
AC_DEFINE(YYTEXT_POINTER)
fi
-AC_SUBST(LEX_OUTPUT_ROOT)dnl
])
AC_DEFUN(AC_PROG_INSTALL,
AC_CACHE_VAL(ac_cv_path_install,
[ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
for ac_dir in $PATH; do
- case "$ac_dir" in
- ''|.|/etc|/usr/sbin|/usr/etc|/sbin|/usr/afsws/bin|/usr/ucb) ;;
+ # Account for people who put trailing slashes in PATH elements.
+ case "$ac_dir/" in
+ /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
*)
# OSF1 and SCO ODT 3.0 have their own names for install.
for ac_prog in ginstall installbsd scoinst install; do
fi
])
+AC_DEFUN(AC_FUNC_GETPGRP,
+[AC_MSG_CHECKING(whether getpgrp takes no argument)
+AC_CACHE_VAL(ac_cv_func_getpgrp_void,
+[AC_TRY_RUN([
+/*
+ * If this system has a BSD-style getpgrp(),
+ * which takes a pid argument, exit unsuccessfully.
+ *
+ * Snarfed from Chet Ramey's bash pgrp.c test program
+ */
+#include <stdio.h>
+#include <sys/types.h>
+
+int pid;
+int pg1, pg2, pg3, pg4;
+int ng, np, s, child;
+
+main()
+{
+ pid = getpid();
+ pg1 = getpgrp(0);
+ pg2 = getpgrp();
+ pg3 = getpgrp(pid);
+ pg4 = getpgrp(1);
+
+ /*
+ * If all of these values are the same, it's pretty sure that
+ * we're on a system that ignores getpgrp's first argument.
+ */
+ if (pg2 == pg4 && pg1 == pg3 && pg2 == pg3)
+ exit(0);
+
+ child = fork();
+ if (child < 0)
+ exit(1);
+ else if (child == 0) {
+ np = getpid();
+ /*
+ * If this is Sys V, this will not work; pgrp will be
+ * set to np because setpgrp just changes a pgrp to be
+ * the same as the pid.
+ */
+ setpgrp(np, pg1);
+ ng = getpgrp(0); /* Same result for Sys V and BSD */
+ if (ng == pg1) {
+ exit(1);
+ } else {
+ exit(0);
+ }
+ } else {
+ wait(&s);
+ exit(s>>8);
+ }
+}
+], ac_cv_func_getpgrp_void=yes, ac_cv_func_getpgrp_void=no,
+ AC_MSG_ERROR(cannot check getpgrp if cross compiling))
+])
+AC_MSG_RESULT($ac_cv_func_getpgrp_void)
+if test $ac_cv_func_getpgrp_void = yes; then
+ AC_DEFINE(GETPGRP_VOID)
+fi
+])
+
AC_DEFUN(AC_FUNC_VPRINTF,
[AC_CHECK_FUNC(vprintf, AC_DEFINE(HAVE_VPRINTF))
if test "$ac_cv_func_vprintf" != yes; then
fi
])
+dnl Do nothing if the compiler accepts the inline keyword.
+dnl Otherwise define inline to __inline__ or __inline if one of those work,
+dnl otherwise define inline to be empty.
AC_DEFUN(AC_C_INLINE,
[AC_MSG_CHECKING([for inline])
AC_CACHE_VAL(ac_cv_c_inline,
-[if test "$GCC" = yes; then
-AC_TRY_COMPILE(, [} inline foo() {], ac_cv_c_inline=yes, ac_cv_c_inline=no)
-else
- ac_cv_c_inline=no
-fi])dnl
+[ac_cv_c_inline=no
+for ac_kw in inline __inline__ __inline; do
+ AC_TRY_COMPILE(, [} $ac_kw foo() {], [ac_cv_c_inline=$ac_kw; break])
+done
+])dnl
AC_MSG_RESULT($ac_cv_c_inline)
-if test $ac_cv_c_inline = no; then
- AC_DEFINE(inline, __inline)
-fi
+case "$ac_cv_c_inline" in
+ inline | yes) ;;
+ no) AC_DEFINE(inline, ) ;;
+ *) AC_DEFINE_UNQUOTED(inline, $ac_cv_c_inline) ;;
+esac
])
AC_DEFUN(AC_C_CONST,
is not changed. Calls @code{AC_SUBST} for @var{variable}.
@end defmac
+@defmac AC_CHECK_TOOL (@var{variable}, @var{prog-to-check-for})
+@maindex CHECK_TOOL
+Like @code{AC_CHECK_PROG}, but first looks for @var{prog-to-check-for}
+with a prefix of the host type as determined by @code{AC_CANONICAL_HOST},
+followed by a dash (@pxref{Canonicalizing}). For example, if the user
+runs @samp{configure --host=i386-gnu}, then this call:
+@example
+AC_CHECK_TOOL(AR, ar)
+@end example
+@noindent
+sets @code{AR} to @file{i386-gnu-ar} if that program exists in
+@code{PATH}, or to @samp{ar} if not.
+@end defmac
+
@defmac AC_PATH_PROG (@var{variable}, @var{prog-to-check-for} @r{[}, @var{value-if-not-found}@r{]})
@maindex PATH_PROG
Like @code{AC_CHECK_PROG}, but set @var{variable} to the entire
@defmac AC_FUNC_GETMNTENT
@maindex FUNC_GETMNTENT
@cvindex HAVE_GETMNTENT
-Check for the @code{getmntent} in the @file{sun} and @file{seq}
+Check for @code{getmntent} in the @file{sun} and @file{seq}
libraries, for Irix 4 and PTX, respectively. Then, if @code{getmntent} is
available, define @code{HAVE_GETMNTENT}.
@end defmac
+@defmac AC_FUNC_GETPGRP
+@maindex FUNC_GETPGRP
+@cvindex GETPGRP_VOID
+If @code{getpgrp} takes no argument (the POSIX.1 version), define
+@code{GETPGRP_VOID}. Otherwise, it is the BSD version, which takes a
+process ID as an argument. This macro does not check whether
+@code{getpgrp} exists at all; if you need to work in that situation,
+first call @code{AC_CHECK_FUNC} for @code{getpgrp}.
+@end defmac
+
@defmac AC_FUNC_MEMCMP
@maindex FUNC_MEMCMP
@ovindex LIBOBJS
@defmac AC_C_INLINE
@maindex C_INLINE
@cvindex inline
-If the C compiler is a version of GCC that supports the keyword
-@code{__inline} but not @code{inline} (such as some NeXT versions),
-define @code{inline} to be @code{__inline}.
+If the C compiler supports the keyword @code{inline}, do nothing.
+Otherwise define @code{inline} to @code{__inline__} or @code{__inline}
+if it accepts one of those, otherwise define @code{inline} to be empty.
@end defmac
@defmac AC_C_CHAR_UNSIGNED
A few kinds of features can't be guessed automatically by running test
programs. For example, the details of the object file format, or
-special options that need to be passed to the compiler or linker. It is
-possible to check for such features using ad-hoc means, such as having
+special options that need to be passed to the compiler or linker. You
+can check for such features using ad-hoc means, such as having
@code{configure} check the output of the @code{uname} program, or
looking for libraries that are unique to particular systems. However,
Autoconf provides a uniform method for handling unguessable features.
to @file{@var{srcdir}/config/$@{obj_format@}.h}.
@end defmac
+You can also use the host system type to find cross-compilation tools.
+@xref{Generic Programs}, for information about the @code{AC_CHECK_TOOL}
+macro which does that.
+
@node Site Configuration, Invoking configure, Manual Configuration, Top
@chapter Site Configuration
exit 0
fi
-mawk '
+@AWK@ '
# Record that sym was found in FILENAME.
function file_sym(sym, i, fs) {
if (sym ~ /^[A-Za-z_]/) {
dnl first and get that path embedded in the installed autoconf and
dnl autoheader scripts.
AC_PATH_PROGS(M4, gm4 gnum4 m4, m4)
+AC_PROG_AWK
dnl We use a path for perl so the #! line in autoscan will work.
AC_PATH_PROG(PERL, perl, no)
MAKEINFO = makeinfo
TEXI2DVI = texi2dvi
M4 = @M4@
+AWK = @AWK@
PERL = @PERL@
# Programs that are always installed.
testsuite/lib/*.exp testsuite/autoconf.[gs]/*.exp \
standards.texi make-stds.texi standards.info*
-editsh = sed -e 's,@''datadir''@,$(acdatadir),g' -e 's,@''M4''@,$(M4),g'
+editsh = sed -e 's,@''datadir''@,$(acdatadir),g' -e \
+ 's,@''M4''@,$(M4),g' -e 's,@''AWK''@,$(AWK),g'
editpl = sed -e 's,@''datadir''@,$(acdatadir),g' -e 's,@''PERL''@,$(PERL),g'
all: ${SCRIPTS}
is not changed. Calls @code{AC_SUBST} for @var{variable}.
@end defmac
+@defmac AC_CHECK_TOOL (@var{variable}, @var{prog-to-check-for})
+@maindex CHECK_TOOL
+Like @code{AC_CHECK_PROG}, but first looks for @var{prog-to-check-for}
+with a prefix of the host type as determined by @code{AC_CANONICAL_HOST},
+followed by a dash (@pxref{Canonicalizing}). For example, if the user
+runs @samp{configure --host=i386-gnu}, then this call:
+@example
+AC_CHECK_TOOL(AR, ar)
+@end example
+@noindent
+sets @code{AR} to @file{i386-gnu-ar} if that program exists in
+@code{PATH}, or to @samp{ar} if not.
+@end defmac
+
@defmac AC_PATH_PROG (@var{variable}, @var{prog-to-check-for} @r{[}, @var{value-if-not-found}@r{]})
@maindex PATH_PROG
Like @code{AC_CHECK_PROG}, but set @var{variable} to the entire
@defmac AC_FUNC_GETMNTENT
@maindex FUNC_GETMNTENT
@cvindex HAVE_GETMNTENT
-Check for the @code{getmntent} in the @file{sun} and @file{seq}
+Check for @code{getmntent} in the @file{sun} and @file{seq}
libraries, for Irix 4 and PTX, respectively. Then, if @code{getmntent} is
available, define @code{HAVE_GETMNTENT}.
@end defmac
+@defmac AC_FUNC_GETPGRP
+@maindex FUNC_GETPGRP
+@cvindex GETPGRP_VOID
+If @code{getpgrp} takes no argument (the POSIX.1 version), define
+@code{GETPGRP_VOID}. Otherwise, it is the BSD version, which takes a
+process ID as an argument. This macro does not check whether
+@code{getpgrp} exists at all; if you need to work in that situation,
+first call @code{AC_CHECK_FUNC} for @code{getpgrp}.
+@end defmac
+
@defmac AC_FUNC_MEMCMP
@maindex FUNC_MEMCMP
@ovindex LIBOBJS
@defmac AC_C_INLINE
@maindex C_INLINE
@cvindex inline
-If the C compiler is a version of GCC that supports the keyword
-@code{__inline} but not @code{inline} (such as some NeXT versions),
-define @code{inline} to be @code{__inline}.
+If the C compiler supports the keyword @code{inline}, do nothing.
+Otherwise define @code{inline} to @code{__inline__} or @code{__inline}
+if it accepts one of those, otherwise define @code{inline} to be empty.
@end defmac
@defmac AC_C_CHAR_UNSIGNED
A few kinds of features can't be guessed automatically by running test
programs. For example, the details of the object file format, or
-special options that need to be passed to the compiler or linker. It is
-possible to check for such features using ad-hoc means, such as having
+special options that need to be passed to the compiler or linker. You
+can check for such features using ad-hoc means, such as having
@code{configure} check the output of the @code{uname} program, or
looking for libraries that are unique to particular systems. However,
Autoconf provides a uniform method for handling unguessable features.
to @file{@var{srcdir}/config/$@{obj_format@}.h}.
@end defmac
+You can also use the host system type to find cross-compilation tools.
+@xref{Generic Programs}, for information about the @code{AC_CHECK_TOOL}
+macro which does that.
+
@node Site Configuration, Invoking configure, Manual Configuration, Top
@chapter Site Configuration
exit 0
fi
-mawk '
+@AWK@ '
# Record that sym was found in FILENAME.
function file_sym(sym, i, fs) {
if (sym ~ /^[A-Za-z_]/) {
exit 0
fi
-mawk '
+@AWK@ '
# Record that sym was found in FILENAME.
function file_sym(sym, i, fs) {
if (sym ~ /^[A-Za-z_]/) {
AC_CANONICAL_BUILD
test "$host_alias" != "$target_alias" &&
test "$program_prefix$program_suffix$program_transform_name" = \
- NONENONEs,x,x, && program_prefix=${target_alias}-
+ NONENONEs,x,x, &&
+ program_prefix=${target_alias}-
])
dnl Subroutines of AC_CANONICAL_SYSTEM.
AC_MSG_CHECKING(host system type)
+dnl Set host_alias.
host_alias=$host
case "$host_alias" in
NONE)
esac ;;
esac
+dnl Set the other host vars.
host=`$ac_config_sub $host_alias`
host_cpu=`echo $host | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
host_vendor=`echo $host | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
AC_MSG_CHECKING(target system type)
+dnl Set target_alias.
target_alias=$target
case "$target_alias" in
NONE)
esac ;;
esac
+dnl Set the other target vars.
target=`$ac_config_sub $target_alias`
target_cpu=`echo $target | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
target_vendor=`echo $target | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
AC_MSG_CHECKING(build system type)
+dnl Set build_alias.
build_alias=$build
case "$build_alias" in
NONE)
esac ;;
esac
+dnl Set the other build vars.
build=`$ac_config_sub $build_alias`
build_cpu=`echo $build | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\1/'`
build_vendor=`echo $build | sed 's/^\(.*\)-\(.*\)-\(.*\)$/\2/'`
ifelse([$3], , , [test -n "[$]$1" || $1="$3"
])])
+dnl Internal subroutine.
+AC_DEFUN(AC_CHECK_TOOL_PREFIX,
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+if test $host != $build; then
+ ac_tool_prefix=${host_alias}-
+else
+ ac_tool_prefix=
+fi
+])
+
+dnl AC_CHECK_TOOL(VARIABLE, PROG-TO-CHECK-FOR)
+AC_DEFUN(AC_CHECK_TOOL,
+[AC_REQUIRE([AC_CHECK_TOOL_PREFIX])dnl
+AC_CHECK_PROG($1, ${ac_tool_prefix}$2, ${ac_tool_prefix}$2, $2)
+])
+
dnl Guess the value for the `prefix' variable by looking for
dnl the argument program along PATH and taking its parent.
dnl Example: if the argument is `gcc' and we find /usr/local/gnu/bin/gcc,
AC_PATH_PROG(AC_VAR_NAME, $1)
changequote(<<, >>)dnl
if test -n "$ac_cv_path_<<>>AC_VAR_NAME"; then
- prefix=`echo $ac_cv_path_<<>>AC_VAR_NAME|sed 's%/[^/][^/]*/[^/][^/]*$%%'`
+ prefix=`echo $ac_cv_path_<<>>AC_VAR_NAME|sed 's%/[^/][^/]*//*[^/][^/]*$%%'`
changequote([, ])dnl
fi
fi
AC_DEFUN(AC_PROG_RANLIB,
[AC_CHECK_PROG(RANLIB, ranlib, ranlib, :)])
-dnl Check for mawk first since it's said to be faster.
+dnl Check for mawk first since it's generally faster.
AC_DEFUN(AC_PROG_AWK,
[AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )])
fi
AC_SUBST(LEXLIB)])
+dnl Check if lex declares yytext as a char * by default, not a char[].
+undefine([AC_DECL_YYTEXT])
AC_DEFUN(AC_DECL_YYTEXT,
[AC_REQUIRE_CPP()dnl
AC_REQUIRE([AC_PROG_LEX])dnl
+AC_MSG_CHECKING(lex output file root)
+AC_CACHE_VAL(ac_cv_prog_lex_root,
+[# The minimal lex program is just a single line: %%. But some broken lexes
+# (Solaris, I think it was) want two %% lines, so accommodate them.
+echo '%%
+%%' | $LEX
+if test -f lex.yy.c; then
+ ac_cv_prog_lex_root=lex.yy
+elif test -f lexyy.c; then
+ ac_cv_prog_lex_root=lexyy
+else
+ AC_MSG_ERROR(cannot find output from $LEX; giving up)
+fi])dnl
+LEX_OUTPUT_ROOT=$ac_cv_prog_lex_root
+AC_MSG_RESULT($ac_cv_prog_lex_root)
+AC_SUBST(LEX_OUTPUT_ROOT)dnl
+
AC_MSG_CHECKING(whether yytext is a pointer)
AC_CACHE_VAL(ac_cv_prog_lex_yytext_pointer,
[# POSIX says lex can declare yytext either as a pointer or an array; the
# default is implementation-dependent. Figure out which it is, since
# not all implementations provide the %pointer and %array declarations.
-#
-# The minimal lex program is just a single line: %%. But some broken lexes
-# (Solaris, I think it was) want two %% lines, so accommodate them.
ac_cv_prog_lex_yytext_pointer=no
- echo '%%
-%%' | $LEX
-if test -f lex.yy.c; then
- LEX_OUTPUT_ROOT=lex.yy
-elif test -f lexyy.c; then
- LEX_OUTPUT_ROOT=lexyy
-else
- AC_MSG_ERROR([cannot find output from $LEX, giving up])
-fi
echo 'extern char *yytext;' >>$LEX_OUTPUT_ROOT.c
ac_save_LIBS="$LIBS"
LIBS="$LIBS $LEXLIB"
if test $ac_cv_prog_lex_yytext_pointer = yes; then
AC_DEFINE(YYTEXT_POINTER)
fi
-AC_SUBST(LEX_OUTPUT_ROOT)dnl
])
AC_DEFUN(AC_PROG_INSTALL,
AC_CACHE_VAL(ac_cv_path_install,
[ IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
for ac_dir in $PATH; do
- case "$ac_dir" in
- ''|.|/etc|/usr/sbin|/usr/etc|/sbin|/usr/afsws/bin|/usr/ucb) ;;
+ # Account for people who put trailing slashes in PATH elements.
+ case "$ac_dir/" in
+ /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
*)
# OSF1 and SCO ODT 3.0 have their own names for install.
for ac_prog in ginstall installbsd scoinst install; do
fi
])
+AC_DEFUN(AC_FUNC_GETPGRP,
+[AC_MSG_CHECKING(whether getpgrp takes no argument)
+AC_CACHE_VAL(ac_cv_func_getpgrp_void,
+[AC_TRY_RUN([
+/*
+ * If this system has a BSD-style getpgrp(),
+ * which takes a pid argument, exit unsuccessfully.
+ *
+ * Snarfed from Chet Ramey's bash pgrp.c test program
+ */
+#include <stdio.h>
+#include <sys/types.h>
+
+int pid;
+int pg1, pg2, pg3, pg4;
+int ng, np, s, child;
+
+main()
+{
+ pid = getpid();
+ pg1 = getpgrp(0);
+ pg2 = getpgrp();
+ pg3 = getpgrp(pid);
+ pg4 = getpgrp(1);
+
+ /*
+ * If all of these values are the same, it's pretty sure that
+ * we're on a system that ignores getpgrp's first argument.
+ */
+ if (pg2 == pg4 && pg1 == pg3 && pg2 == pg3)
+ exit(0);
+
+ child = fork();
+ if (child < 0)
+ exit(1);
+ else if (child == 0) {
+ np = getpid();
+ /*
+ * If this is Sys V, this will not work; pgrp will be
+ * set to np because setpgrp just changes a pgrp to be
+ * the same as the pid.
+ */
+ setpgrp(np, pg1);
+ ng = getpgrp(0); /* Same result for Sys V and BSD */
+ if (ng == pg1) {
+ exit(1);
+ } else {
+ exit(0);
+ }
+ } else {
+ wait(&s);
+ exit(s>>8);
+ }
+}
+], ac_cv_func_getpgrp_void=yes, ac_cv_func_getpgrp_void=no,
+ AC_MSG_ERROR(cannot check getpgrp if cross compiling))
+])
+AC_MSG_RESULT($ac_cv_func_getpgrp_void)
+if test $ac_cv_func_getpgrp_void = yes; then
+ AC_DEFINE(GETPGRP_VOID)
+fi
+])
+
AC_DEFUN(AC_FUNC_VPRINTF,
[AC_CHECK_FUNC(vprintf, AC_DEFINE(HAVE_VPRINTF))
if test "$ac_cv_func_vprintf" != yes; then
fi
])
+dnl Do nothing if the compiler accepts the inline keyword.
+dnl Otherwise define inline to __inline__ or __inline if one of those work,
+dnl otherwise define inline to be empty.
AC_DEFUN(AC_C_INLINE,
[AC_MSG_CHECKING([for inline])
AC_CACHE_VAL(ac_cv_c_inline,
-[if test "$GCC" = yes; then
-AC_TRY_COMPILE(, [} inline foo() {], ac_cv_c_inline=yes, ac_cv_c_inline=no)
-else
- ac_cv_c_inline=no
-fi])dnl
+[ac_cv_c_inline=no
+for ac_kw in inline __inline__ __inline; do
+ AC_TRY_COMPILE(, [} $ac_kw foo() {], [ac_cv_c_inline=$ac_kw; break])
+done
+])dnl
AC_MSG_RESULT($ac_cv_c_inline)
-if test $ac_cv_c_inline = no; then
- AC_DEFINE(inline, __inline)
-fi
+case "$ac_cv_c_inline" in
+ inline | yes) ;;
+ no) AC_DEFINE(inline, ) ;;
+ *) AC_DEFINE_UNQUOTED(inline, $ac_cv_c_inline) ;;
+esac
])
AC_DEFUN(AC_C_CONST,
projects / thirdparty / autoconf.git / commitdiff
