-# glob.m4 serial 1
+# glob.m4 serial 2
dnl Copyright (C) 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
AC_CHECK_HEADERS([glob.h], [], [GLOB_H=glob.h])
if test -z "$GLOB_H"; then
- AC_COMPILE_IFELSE(
+ AC_CACHE_CHECK([for GNU glob interface version 1],
+ [gl_cv_gnu_glob_interface_version_1],
+[ AC_COMPILE_IFELSE(
[[#include <gnu-versions.h>
char a[_GNU_GLOB_INTERFACE_VERSION == 1 ? 1 : -1];]],
- [], [GLOB_H=glob.h])
+ [gl_cv_gnu_glob_interface_version_1=yes],
+ [gl_cv_gnu_glob_interface_version_1=no])])
+
+ if test "$gl_cv_gnu_glob_interface_version_1" = "no"; then
+ GLOB_H=glob.h
+ fi
+ fi
+
+ if test -z "$GLOB_H"; then
+ AC_CACHE_CHECK([whether glob lists broken symlinks],
+ [gl_cv_glob_lists_symlinks],
+[ if ln -s conf-doesntexist conf$$-globtest 2>/dev/null; then
+ gl_cv_glob_lists_symlinks=maybe
+ else
+ # If we can't make a symlink, then we cannot test this issue. Be
+ # pessimistic about this.
+ gl_cv_glob_lists_symlinks=no
+ fi
+
+ if test $gl_cv_glob_lists_symlinks = maybe; then
+ AC_RUN_IFELSE(
+AC_LANG_PROGRAM(
+[[#include <stddef.h>
+#include <glob.h>]],
+[[glob_t found;
+if (glob ("conf*-globtest", 0, NULL, &found) == GLOB_NOMATCH) return 1;]]),
+ [gl_cv_glob_lists_symlinks=yes],
+ [gl_cv_glob_lists_symlinks=no], [gl_cv_glob_lists_symlinks=no])
+ fi])
+
+ if test $gl_cv_glob_lists_symlinks = no; then
+ GLOB_H=glob.h
+ fi
fi
+ rm -f conf$$-globtest
+
if test -n "$GLOB_H"; then
gl_GLOB_SUBSTITUTE
fi
AC_CHECK_HEADERS_ONCE([sys/cdefs.h unistd.h])dnl
AC_CHECK_FUNCS_ONCE([getlogin_r getpwnam_r])dnl
AC_CHECK_HEADERS([sys/cdefs.h], [SYS_CDEFS_H=yes], [SYS_CDEFS_H=no])
+
+ dnl Note the reversal of the common HAVE_SYS_CDEFS_H idiom below. In this
+ dnl way, #ifndef _SYS_CDEFS_H may be used to include <sys/cdefs.h> both when
+ dnl it has been checked for via the GNULIB configure test and found and when
+ dnl it has not been checked for, which we can presume means that the <glob.h>
+ dnl GNULIB shares with GLIBC is being included as a system header and not as
+ dnl part of GNULIB, in which case <sys/cdefs.h> may be assumed.
if test $SYS_CDEFS_H = no; then
- AC_DEFINE(MISSING_SYS_CDEFS_H, 1,
+ AC_DEFINE(_SYS_CDEFS_H, 1,
[Define to `1' if <sys/cdefs.h> is *not* available on this system.])
fi
:])