third_party/talloc/libreplace/libreplace.m4 - chromium/src - Git at Google

 AC_DEFUN_ONCE(AC_LIBREPLACE_LOCATION_CHECKS,
 [
 echo "LIBREPLACE_LOCATION_CHECKS: START"

 dnl find the libreplace sources. This is meant to work both for
 dnl libreplace standalone builds, and builds of packages using libreplace
 libreplacedir=""
 libreplacepaths="$srcdir $srcdir/lib/replace $srcdir/libreplace $srcdir/../libreplace $srcdir/../replace $srcdir/../lib/replace $srcdir/../../../lib/replace"
 for d in $libreplacepaths; do
 	if test -f "$d/replace.c"; then
 		libreplacedir="$d"
 		AC_SUBST(libreplacedir)
 		break;
 	fi
 done
 if test x"$libreplacedir" = "x"; then
 	AC_MSG_ERROR([cannot find libreplace in $libreplacepaths])
 fi
 LIBREPLACEOBJ="$libreplacedir/replace.o"
 AC_SUBST(LIBREPLACEOBJ)

 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
 AC_CANONICAL_TARGET

 echo "LIBREPLACE_LOCATION_CHECKS: END"
 ]) dnl end AC_LIBREPLACE_LOCATION_CHECKS


 AC_DEFUN_ONCE(AC_LIBREPLACE_BROKEN_CHECKS,
 [
 echo "LIBREPLACE_BROKEN_CHECKS: START"

 dnl find the libreplace sources. This is meant to work both for
 dnl libreplace standalone builds, and builds of packages using libreplace
 libreplacedir=""
 libreplacepaths="$srcdir $srcdir/lib/replace $srcdir/libreplace $srcdir/../libreplace $srcdir/../replace $srcdir/../lib/replace $srcdir/../../../lib/replace"
 for d in $libreplacepaths; do
 	if test -f "$d/replace.c"; then
 		libreplacedir="$d"
 		AC_SUBST(libreplacedir)
 		break;
 	fi
 done
 if test x"$libreplacedir" = "x"; then
 	AC_MSG_ERROR([cannot find libreplace in $libreplacepaths])
 fi

 LIBREPLACEOBJ="$libreplacedir/replace.o"
 AC_SUBST(LIBREPLACEOBJ)

 LIBREPLACEOBJ="${LIBREPLACEOBJ} $libreplacedir/snprintf.o"

 AC_TYPE_SIGNAL
 AC_TYPE_UID_T
 AC_TYPE_MODE_T
 AC_TYPE_OFF_T
 AC_TYPE_SIZE_T
 AC_TYPE_PID_T
 AC_STRUCT_ST_RDEV
 AC_CHECK_TYPE(ino_t,unsigned)
 AC_CHECK_TYPE(loff_t,off_t)
 AC_CHECK_TYPE(offset_t,loff_t)

 AC_FUNC_MEMCMP

 AC_CHECK_FUNCS([pipe strftime srandom random srand rand usleep setbuffer lstat getpgrp utime utimes])

 AC_CHECK_HEADERS(stdbool.h stdint.h sys/select.h)
 AC_CHECK_HEADERS(setjmp.h utime.h)

 LIBREPLACE_PROVIDE_HEADER([stdint.h])
 LIBREPLACE_PROVIDE_HEADER([stdbool.h])

 AC_CHECK_TYPE(bool,
 [AC_DEFINE(HAVE_BOOL, 1, [Whether the bool type is available])],,
 [
 AC_INCLUDES_DEFAULT
 #ifdef HAVE_STDBOOL_H
 #include <stdbool.h>
 #endif]
 )

 AC_CHECK_TYPE(_Bool,
 [AC_DEFINE(HAVE__Bool, 1, [Whether the _Bool type is available])],,
 [
 AC_INCLUDES_DEFAULT
 #ifdef HAVE_STDBOOL_H
 #include <stdbool.h>
 #endif]
 )

 AC_CACHE_CHECK([for working mmap],libreplace_cv_HAVE_MMAP,[
 AC_TRY_RUN([#include "$libreplacedir/test/shared_mmap.c"],
            libreplace_cv_HAVE_MMAP=yes,libreplace_cv_HAVE_MMAP=no,libreplace_cv_HAVE_MMAP=cross)])
 if test x"$libreplace_cv_HAVE_MMAP" = x"yes"; then
     AC_DEFINE(HAVE_MMAP,1,[Whether mmap works])
 fi


 AC_CHECK_HEADERS(sys/syslog.h syslog.h)
 AC_CHECK_HEADERS(sys/time.h time.h)
 AC_CHECK_HEADERS(stdarg.h vararg.h)
 AC_CHECK_HEADERS(sys/mount.h mntent.h)
 AC_CHECK_HEADERS(stropts.h)
 AC_CHECK_HEADERS(unix.h)

 AC_CHECK_FUNCS(seteuid setresuid setegid setresgid chroot bzero strerror)
 AC_CHECK_FUNCS(vsyslog setlinebuf mktime ftruncate chsize rename)
 AC_CHECK_FUNCS(waitpid wait4 strlcpy strlcat initgroups memmove strdup)
 AC_CHECK_FUNCS(pread pwrite strndup strcasestr strtok_r mkdtemp dup2)
 AC_CHECK_FUNCS(isatty chown lchown link readlink symlink realpath)
 AC_HAVE_DECL(setresuid, [#include <unistd.h>])
 AC_HAVE_DECL(setresgid, [#include <unistd.h>])
 AC_HAVE_DECL(errno, [#include <errno.h>])

 AC_CACHE_CHECK([for secure mkstemp],libreplace_cv_HAVE_SECURE_MKSTEMP,[
 AC_TRY_RUN([#include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
 main() {
   struct stat st;
   char tpl[20]="/tmp/test.XXXXXX";
   int fd = mkstemp(tpl);
   if (fd == -1) exit(1);
   unlink(tpl);
   if (fstat(fd, &st) != 0) exit(1);
   if ((st.st_mode & 0777) != 0600) exit(1);
   exit(0);
 }],
 libreplace_cv_HAVE_SECURE_MKSTEMP=yes,
 libreplace_cv_HAVE_SECURE_MKSTEMP=no,
 libreplace_cv_HAVE_SECURE_MKSTEMP=cross)])
 if test x"$libreplace_cv_HAVE_SECURE_MKSTEMP" = x"yes"; then
     AC_DEFINE(HAVE_SECURE_MKSTEMP,1,[Whether mkstemp is secure])
 fi

 dnl Provided by snprintf.c:
 AC_CHECK_HEADERS(stdio.h strings.h)
 AC_CHECK_DECLS([snprintf, vsnprintf, asprintf, vasprintf])
 AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)

 AC_CACHE_CHECK([for C99 vsnprintf],libreplace_cv_HAVE_C99_VSNPRINTF,[
 AC_TRY_RUN([
 #include <sys/types.h>
 #include <stdio.h>
 #include <stdarg.h>
 #include <stdlib.h>
 void foo(const char *format, ...) {
        va_list ap;
        int len;
        char buf[20];
        long long l = 1234567890;
        l *= 100;

        va_start(ap, format);
        len = vsnprintf(buf, 0, format, ap);
        va_end(ap);
        if (len != 5) exit(1);

        va_start(ap, format);
        len = vsnprintf(0, 0, format, ap);
        va_end(ap);
        if (len != 5) exit(2);

        if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(3);

        if (snprintf(buf, 20, "%lld", l) != 12 || strcmp(buf, "123456789000") != 0) exit(4);
        if (snprintf(buf, 20, "%zu", 123456789) != 9 || strcmp(buf, "123456789") != 0) exit(5);
        if (snprintf(buf, 20, "%2\$d %1\$d", 3, 4) != 3 || strcmp(buf, "4 3") != 0) exit(6);
        if (snprintf(buf, 20, "%s", 0) < 3) exit(7);

        exit(0);
 }
 main() { foo("hello"); }
 ],
 libreplace_cv_HAVE_C99_VSNPRINTF=yes,libreplace_cv_HAVE_C99_VSNPRINTF=no,libreplace_cv_HAVE_C99_VSNPRINTF=cross)])
 if test x"$libreplace_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
     AC_DEFINE(HAVE_C99_VSNPRINTF,1,[Whether there is a C99 compliant vsnprintf])
 fi


 dnl VA_COPY
 AC_CACHE_CHECK([for va_copy],libreplace_cv_HAVE_VA_COPY,[
 AC_TRY_LINK([#include <stdarg.h>
 va_list ap1,ap2;], [va_copy(ap1,ap2);],
 libreplace_cv_HAVE_VA_COPY=yes,libreplace_cv_HAVE_VA_COPY=no)])
 if test x"$libreplace_cv_HAVE_VA_COPY" = x"yes"; then
     AC_DEFINE(HAVE_VA_COPY,1,[Whether va_copy() is available])
 fi

 if test x"$libreplace_cv_HAVE_VA_COPY" != x"yes"; then
 AC_CACHE_CHECK([for __va_copy],libreplace_cv_HAVE___VA_COPY,[
 AC_TRY_LINK([#include <stdarg.h>
 va_list ap1,ap2;], [__va_copy(ap1,ap2);],
 libreplace_cv_HAVE___VA_COPY=yes,libreplace_cv_HAVE___VA_COPY=no)])
 if test x"$libreplace_cv_HAVE___VA_COPY" = x"yes"; then
     AC_DEFINE(HAVE___VA_COPY,1,[Whether __va_copy() is available])
 fi
 fi

 dnl __FUNCTION__ macro
 AC_CACHE_CHECK([for __FUNCTION__ macro],libreplace_cv_HAVE_FUNCTION_MACRO,[
 AC_TRY_COMPILE([#include <stdio.h>], [printf("%s\n", __FUNCTION__);],
 libreplace_cv_HAVE_FUNCTION_MACRO=yes,libreplace_cv_HAVE_FUNCTION_MACRO=no)])
 if test x"$libreplace_cv_HAVE_FUNCTION_MACRO" = x"yes"; then
     AC_DEFINE(HAVE_FUNCTION_MACRO,1,[Whether there is a __FUNCTION__ macro])
 else
     dnl __func__ macro
     AC_CACHE_CHECK([for __func__ macro],libreplace_cv_HAVE_func_MACRO,[
     AC_TRY_COMPILE([#include <stdio.h>], [printf("%s\n", __func__);],
     libreplace_cv_HAVE_func_MACRO=yes,libreplace_cv_HAVE_func_MACRO=no)])
     if test x"$libreplace_cv_HAVE_func_MACRO" = x"yes"; then
        AC_DEFINE(HAVE_func_MACRO,1,[Whether there is a __func__ macro])
     fi
 fi

 AC_CHECK_HEADERS([sys/param.h limits.h])

 AC_CHECK_TYPE(comparison_fn_t,
 [AC_DEFINE(HAVE_COMPARISON_FN_T, 1,[Whether or not we have comparison_fn_t])])

 AC_HAVE_DECL(setenv, [#include <stdlib.h>])
 AC_CHECK_FUNCS(setenv unsetenv)
 AC_HAVE_DECL(environ, [#include <unistd.h>])

 AC_CHECK_FUNCS(strnlen)
 AC_CHECK_FUNCS(strtoull __strtoull strtouq strtoll __strtoll strtoq)

 # this test disabled as we don't actually need __VA_ARGS__ yet
 AC_TRY_CPP([
 #define eprintf(...) fprintf(stderr, __VA_ARGS__)
 eprintf("bla", "bar");
 ], AC_DEFINE(HAVE__VA_ARGS__MACRO, 1, [Whether the __VA_ARGS__ macro is available]))


 AC_CACHE_CHECK([for sig_atomic_t type],libreplace_cv_sig_atomic_t, [
     AC_TRY_COMPILE([
 #include <sys/types.h>
 #if STDC_HEADERS
 #include <stdlib.h>
 #include <stddef.h>
 #endif
 #include <signal.h>],[sig_atomic_t i = 0],
 	libreplace_cv_sig_atomic_t=yes,libreplace_cv_sig_atomic_t=no)])
 if test x"$libreplace_cv_sig_atomic_t" = x"yes"; then
    AC_DEFINE(HAVE_SIG_ATOMIC_T_TYPE,1,[Whether we have the atomic_t variable type])
 fi


 AC_CACHE_CHECK([for O_DIRECT flag to open(2)],libreplace_cv_HAVE_OPEN_O_DIRECT,[
 AC_TRY_COMPILE([
 #include <unistd.h>
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif],
 [int fd = open("/dev/null", O_DIRECT);],
 libreplace_cv_HAVE_OPEN_O_DIRECT=yes,libreplace_cv_HAVE_OPEN_O_DIRECT=no)])
 if test x"$libreplace_cv_HAVE_OPEN_O_DIRECT" = x"yes"; then
     AC_DEFINE(HAVE_OPEN_O_DIRECT,1,[Whether the open(2) accepts O_DIRECT])
 fi


 dnl Check if the C compiler understands volatile (it should, being ANSI).
 AC_CACHE_CHECK([that the C compiler understands volatile],libreplace_cv_volatile, [
 	AC_TRY_COMPILE([#include <sys/types.h>],[volatile int i = 0],
 		libreplace_cv_volatile=yes,libreplace_cv_volatile=no)])
 if test x"$libreplace_cv_volatile" = x"yes"; then
 	AC_DEFINE(HAVE_VOLATILE, 1, [Whether the C compiler understands volatile])
 fi

 m4_include(system/config.m4)

 m4_include(dlfcn.m4)
 m4_include(getpass.m4)
 m4_include(strptime.m4)
 m4_include(win32.m4)
 m4_include(timegm.m4)
 m4_include(repdir.m4)
 m4_include(crypt.m4)

 AC_CHECK_FUNCS([printf memset memcpy],,[AC_MSG_ERROR([Required function not found])])

 echo "LIBREPLACE_BROKEN_CHECKS: END"
 ]) dnl end AC_LIBREPLACE_BROKEN_CHECKS

 AC_DEFUN_ONCE(AC__LIBREPLACE_ALL_CHECKS_START,
 [
 #LIBREPLACE_ALL_CHECKS: START"
 ])
 AC_DEFUN_ONCE(AC__LIBREPLACE_ALL_CHECKS_END,
 [
 #LIBREPLACE_ALL_CHECKS: END"
 ])
 m4_define(AC_LIBREPLACE_ALL_CHECKS,
 [
 AC__LIBREPLACE_ALL_CHECKS_START
 AC_LIBREPLACE_LOCATION_CHECKS
 AC_LIBREPLACE_CC_CHECKS
 AC_LIBREPLACE_BROKEN_CHECKS
 AC__LIBREPLACE_ALL_CHECKS_END
 CFLAGS="$CFLAGS -I$libreplacedir"
 ])

 m4_include(libreplace_cc.m4)
 m4_include(libreplace_ld.m4)
 m4_include(libreplace_network.m4)
 m4_include(libreplace_macros.m4)

 m4_ifndef([AC_USE_SYSTEM_EXTENSIONS],[m4_include(autoconf-2.60.m4)])
	AC_DEFUN_ONCE(AC_LIBREPLACE_LOCATION_CHECKS,
	[
	echo "LIBREPLACE_LOCATION_CHECKS: START"

	dnl find the libreplace sources. This is meant to work both for
	dnl libreplace standalone builds, and builds of packages using libreplace
	libreplacedir=""
	libreplacepaths="$srcdir $srcdir/lib/replace $srcdir/libreplace $srcdir/../libreplace $srcdir/../replace $srcdir/../lib/replace $srcdir/../../../lib/replace"
	for d in $libreplacepaths; do
	if test -f "$d/replace.c"; then
	libreplacedir="$d"
	AC_SUBST(libreplacedir)
	break;
	fi
	done
	if test x"$libreplacedir" = "x"; then
	AC_MSG_ERROR([cannot find libreplace in $libreplacepaths])
	fi
	LIBREPLACEOBJ="$libreplacedir/replace.o"
	AC_SUBST(LIBREPLACEOBJ)

	AC_CANONICAL_BUILD
	AC_CANONICAL_HOST
	AC_CANONICAL_TARGET

	echo "LIBREPLACE_LOCATION_CHECKS: END"
	]) dnl end AC_LIBREPLACE_LOCATION_CHECKS


	AC_DEFUN_ONCE(AC_LIBREPLACE_BROKEN_CHECKS,
	[
	echo "LIBREPLACE_BROKEN_CHECKS: START"

	dnl find the libreplace sources. This is meant to work both for
	dnl libreplace standalone builds, and builds of packages using libreplace
	libreplacedir=""
	libreplacepaths="$srcdir $srcdir/lib/replace $srcdir/libreplace $srcdir/../libreplace $srcdir/../replace $srcdir/../lib/replace $srcdir/../../../lib/replace"
	for d in $libreplacepaths; do
	if test -f "$d/replace.c"; then
	libreplacedir="$d"
	AC_SUBST(libreplacedir)
	break;
	fi
	done
	if test x"$libreplacedir" = "x"; then
	AC_MSG_ERROR([cannot find libreplace in $libreplacepaths])
	fi

	LIBREPLACEOBJ="$libreplacedir/replace.o"
	AC_SUBST(LIBREPLACEOBJ)

	LIBREPLACEOBJ="${LIBREPLACEOBJ} $libreplacedir/snprintf.o"

	AC_TYPE_SIGNAL
	AC_TYPE_UID_T
	AC_TYPE_MODE_T
	AC_TYPE_OFF_T
	AC_TYPE_SIZE_T
	AC_TYPE_PID_T
	AC_STRUCT_ST_RDEV
	AC_CHECK_TYPE(ino_t,unsigned)
	AC_CHECK_TYPE(loff_t,off_t)
	AC_CHECK_TYPE(offset_t,loff_t)

	AC_FUNC_MEMCMP

	AC_CHECK_FUNCS([pipe strftime srandom random srand rand usleep setbuffer lstat getpgrp utime utimes])

	AC_CHECK_HEADERS(stdbool.h stdint.h sys/select.h)
	AC_CHECK_HEADERS(setjmp.h utime.h)

	LIBREPLACE_PROVIDE_HEADER([stdint.h])
	LIBREPLACE_PROVIDE_HEADER([stdbool.h])

	AC_CHECK_TYPE(bool,
	[AC_DEFINE(HAVE_BOOL, 1, [Whether the bool type is available])],,
	[
	AC_INCLUDES_DEFAULT
	#ifdef HAVE_STDBOOL_H
	#include <stdbool.h>
	#endif]
	)

	AC_CHECK_TYPE(_Bool,
	[AC_DEFINE(HAVE__Bool, 1, [Whether the _Bool type is available])],,
	[
	AC_INCLUDES_DEFAULT
	#ifdef HAVE_STDBOOL_H
	#include <stdbool.h>
	#endif]
	)

	AC_CACHE_CHECK([for working mmap],libreplace_cv_HAVE_MMAP,[
	AC_TRY_RUN([#include "$libreplacedir/test/shared_mmap.c"],
	libreplace_cv_HAVE_MMAP=yes,libreplace_cv_HAVE_MMAP=no,libreplace_cv_HAVE_MMAP=cross)])
	if test x"$libreplace_cv_HAVE_MMAP" = x"yes"; then
	AC_DEFINE(HAVE_MMAP,1,[Whether mmap works])
	fi


	AC_CHECK_HEADERS(sys/syslog.h syslog.h)
	AC_CHECK_HEADERS(sys/time.h time.h)
	AC_CHECK_HEADERS(stdarg.h vararg.h)
	AC_CHECK_HEADERS(sys/mount.h mntent.h)
	AC_CHECK_HEADERS(stropts.h)
	AC_CHECK_HEADERS(unix.h)

	AC_CHECK_FUNCS(seteuid setresuid setegid setresgid chroot bzero strerror)
	AC_CHECK_FUNCS(vsyslog setlinebuf mktime ftruncate chsize rename)
	AC_CHECK_FUNCS(waitpid wait4 strlcpy strlcat initgroups memmove strdup)
	AC_CHECK_FUNCS(pread pwrite strndup strcasestr strtok_r mkdtemp dup2)
	AC_CHECK_FUNCS(isatty chown lchown link readlink symlink realpath)
	AC_HAVE_DECL(setresuid, [#include <unistd.h>])
	AC_HAVE_DECL(setresgid, [#include <unistd.h>])
	AC_HAVE_DECL(errno, [#include <errno.h>])

	AC_CACHE_CHECK([for secure mkstemp],libreplace_cv_HAVE_SECURE_MKSTEMP,[
	AC_TRY_RUN([#include <stdlib.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <unistd.h>
	main() {
	struct stat st;
	char tpl[20]="/tmp/test.XXXXXX";
	int fd = mkstemp(tpl);
	if (fd == -1) exit(1);
	unlink(tpl);
	if (fstat(fd, &st) != 0) exit(1);
	if ((st.st_mode & 0777) != 0600) exit(1);
	exit(0);
	}],
	libreplace_cv_HAVE_SECURE_MKSTEMP=yes,
	libreplace_cv_HAVE_SECURE_MKSTEMP=no,
	libreplace_cv_HAVE_SECURE_MKSTEMP=cross)])
	if test x"$libreplace_cv_HAVE_SECURE_MKSTEMP" = x"yes"; then
	AC_DEFINE(HAVE_SECURE_MKSTEMP,1,[Whether mkstemp is secure])
	fi

	dnl Provided by snprintf.c:
	AC_CHECK_HEADERS(stdio.h strings.h)
	AC_CHECK_DECLS([snprintf, vsnprintf, asprintf, vasprintf])
	AC_CHECK_FUNCS(snprintf vsnprintf asprintf vasprintf)

	AC_CACHE_CHECK([for C99 vsnprintf],libreplace_cv_HAVE_C99_VSNPRINTF,[
	AC_TRY_RUN([
	#include <sys/types.h>
	#include <stdio.h>
	#include <stdarg.h>
	#include <stdlib.h>
	void foo(const char *format, ...) {
	va_list ap;
	int len;
	char buf[20];
	long long l = 1234567890;
	l *= 100;

	va_start(ap, format);
	len = vsnprintf(buf, 0, format, ap);
	va_end(ap);
	if (len != 5) exit(1);

	va_start(ap, format);
	len = vsnprintf(0, 0, format, ap);
	va_end(ap);
	if (len != 5) exit(2);

	if (snprintf(buf, 3, "hello") != 5 \|\| strcmp(buf, "he") != 0) exit(3);

	if (snprintf(buf, 20, "%lld", l) != 12 \|\| strcmp(buf, "123456789000") != 0) exit(4);
	if (snprintf(buf, 20, "%zu", 123456789) != 9 \|\| strcmp(buf, "123456789") != 0) exit(5);
	if (snprintf(buf, 20, "%2\$d %1\$d", 3, 4) != 3 \|\| strcmp(buf, "4 3") != 0) exit(6);
	if (snprintf(buf, 20, "%s", 0) < 3) exit(7);

	exit(0);
	}
	main() { foo("hello"); }
	],
	libreplace_cv_HAVE_C99_VSNPRINTF=yes,libreplace_cv_HAVE_C99_VSNPRINTF=no,libreplace_cv_HAVE_C99_VSNPRINTF=cross)])
	if test x"$libreplace_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
	AC_DEFINE(HAVE_C99_VSNPRINTF,1,[Whether there is a C99 compliant vsnprintf])
	fi


	dnl VA_COPY
	AC_CACHE_CHECK([for va_copy],libreplace_cv_HAVE_VA_COPY,[
	AC_TRY_LINK([#include <stdarg.h>
	va_list ap1,ap2;], [va_copy(ap1,ap2);],
	libreplace_cv_HAVE_VA_COPY=yes,libreplace_cv_HAVE_VA_COPY=no)])
	if test x"$libreplace_cv_HAVE_VA_COPY" = x"yes"; then
	AC_DEFINE(HAVE_VA_COPY,1,[Whether va_copy() is available])
	fi

	if test x"$libreplace_cv_HAVE_VA_COPY" != x"yes"; then
	AC_CACHE_CHECK([for __va_copy],libreplace_cv_HAVE___VA_COPY,[
	AC_TRY_LINK([#include <stdarg.h>
	va_list ap1,ap2;], [__va_copy(ap1,ap2);],
	libreplace_cv_HAVE___VA_COPY=yes,libreplace_cv_HAVE___VA_COPY=no)])
	if test x"$libreplace_cv_HAVE___VA_COPY" = x"yes"; then
	AC_DEFINE(HAVE___VA_COPY,1,[Whether __va_copy() is available])
	fi
	fi

	dnl __FUNCTION__ macro
	AC_CACHE_CHECK([for __FUNCTION__ macro],libreplace_cv_HAVE_FUNCTION_MACRO,[
	AC_TRY_COMPILE([#include <stdio.h>], [printf("%s\n", __FUNCTION__);],
	libreplace_cv_HAVE_FUNCTION_MACRO=yes,libreplace_cv_HAVE_FUNCTION_MACRO=no)])
	if test x"$libreplace_cv_HAVE_FUNCTION_MACRO" = x"yes"; then
	AC_DEFINE(HAVE_FUNCTION_MACRO,1,[Whether there is a __FUNCTION__ macro])
	else
	dnl __func__ macro
	AC_CACHE_CHECK([for __func__ macro],libreplace_cv_HAVE_func_MACRO,[
	AC_TRY_COMPILE([#include <stdio.h>], [printf("%s\n", __func__);],
	libreplace_cv_HAVE_func_MACRO=yes,libreplace_cv_HAVE_func_MACRO=no)])
	if test x"$libreplace_cv_HAVE_func_MACRO" = x"yes"; then
	AC_DEFINE(HAVE_func_MACRO,1,[Whether there is a __func__ macro])
	fi
	fi

	AC_CHECK_HEADERS([sys/param.h limits.h])

	AC_CHECK_TYPE(comparison_fn_t,
	[AC_DEFINE(HAVE_COMPARISON_FN_T, 1,[Whether or not we have comparison_fn_t])])

	AC_HAVE_DECL(setenv, [#include <stdlib.h>])
	AC_CHECK_FUNCS(setenv unsetenv)
	AC_HAVE_DECL(environ, [#include <unistd.h>])

	AC_CHECK_FUNCS(strnlen)
	AC_CHECK_FUNCS(strtoull __strtoull strtouq strtoll __strtoll strtoq)

	# this test disabled as we don't actually need __VA_ARGS__ yet
	AC_TRY_CPP([
	#define eprintf(...) fprintf(stderr, __VA_ARGS__)
	eprintf("bla", "bar");
	], AC_DEFINE(HAVE__VA_ARGS__MACRO, 1, [Whether the __VA_ARGS__ macro is available]))


	AC_CACHE_CHECK([for sig_atomic_t type],libreplace_cv_sig_atomic_t, [
	AC_TRY_COMPILE([
	#include <sys/types.h>
	#if STDC_HEADERS
	#include <stdlib.h>
	#include <stddef.h>
	#endif
	#include <signal.h>],[sig_atomic_t i = 0],
	libreplace_cv_sig_atomic_t=yes,libreplace_cv_sig_atomic_t=no)])
	if test x"$libreplace_cv_sig_atomic_t" = x"yes"; then
	AC_DEFINE(HAVE_SIG_ATOMIC_T_TYPE,1,[Whether we have the atomic_t variable type])
	fi


	AC_CACHE_CHECK([for O_DIRECT flag to open(2)],libreplace_cv_HAVE_OPEN_O_DIRECT,[
	AC_TRY_COMPILE([
	#include <unistd.h>
	#ifdef HAVE_FCNTL_H
	#include <fcntl.h>
	#endif],
	[int fd = open("/dev/null", O_DIRECT);],
	libreplace_cv_HAVE_OPEN_O_DIRECT=yes,libreplace_cv_HAVE_OPEN_O_DIRECT=no)])
	if test x"$libreplace_cv_HAVE_OPEN_O_DIRECT" = x"yes"; then
	AC_DEFINE(HAVE_OPEN_O_DIRECT,1,[Whether the open(2) accepts O_DIRECT])
	fi


	dnl Check if the C compiler understands volatile (it should, being ANSI).
	AC_CACHE_CHECK([that the C compiler understands volatile],libreplace_cv_volatile, [
	AC_TRY_COMPILE([#include <sys/types.h>],[volatile int i = 0],
	libreplace_cv_volatile=yes,libreplace_cv_volatile=no)])
	if test x"$libreplace_cv_volatile" = x"yes"; then
	AC_DEFINE(HAVE_VOLATILE, 1, [Whether the C compiler understands volatile])
	fi

	m4_include(system/config.m4)

	m4_include(dlfcn.m4)
	m4_include(getpass.m4)
	m4_include(strptime.m4)
	m4_include(win32.m4)
	m4_include(timegm.m4)
	m4_include(repdir.m4)
	m4_include(crypt.m4)

	AC_CHECK_FUNCS([printf memset memcpy],,[AC_MSG_ERROR([Required function not found])])

	echo "LIBREPLACE_BROKEN_CHECKS: END"
	]) dnl end AC_LIBREPLACE_BROKEN_CHECKS

	AC_DEFUN_ONCE(AC__LIBREPLACE_ALL_CHECKS_START,
	[
	#LIBREPLACE_ALL_CHECKS: START"
	])
	AC_DEFUN_ONCE(AC__LIBREPLACE_ALL_CHECKS_END,
	[
	#LIBREPLACE_ALL_CHECKS: END"
	])
	m4_define(AC_LIBREPLACE_ALL_CHECKS,
	[
	AC__LIBREPLACE_ALL_CHECKS_START
	AC_LIBREPLACE_LOCATION_CHECKS
	AC_LIBREPLACE_CC_CHECKS
	AC_LIBREPLACE_BROKEN_CHECKS
	AC__LIBREPLACE_ALL_CHECKS_END
	CFLAGS="$CFLAGS -I$libreplacedir"
	])

	m4_include(libreplace_cc.m4)
	m4_include(libreplace_ld.m4)
	m4_include(libreplace_network.m4)
	m4_include(libreplace_macros.m4)

	m4_ifndef([AC_USE_SYSTEM_EXTENSIONS],[m4_include(autoconf-2.60.m4)])