-# serial 3
+# serial 10
# See if we need to provide fdopendir.
-dnl Copyright (C) 2009-2010 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_FDOPENDIR],
[
+ AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ dnl FreeBSD 7.3 has the function, but failed to declare it.
+ AC_CHECK_DECLS([fdopendir], [], [HAVE_DECL_FDOPENDIR=0], [[
+#include <dirent.h>
+ ]])
AC_CHECK_FUNCS_ONCE([fdopendir])
if test $ac_cv_func_fdopendir = no; then
- AC_LIBOBJ([openat-proc])
- AC_LIBOBJ([fdopendir])
- gl_REPLACE_DIRENT_H
HAVE_FDOPENDIR=0
else
AC_CACHE_CHECK([whether fdopendir works],
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <dirent.h>
#include <fcntl.h>
-]], [int fd = open ("conftest.c", O_RDONLY);
- if (fd < 0) return 2;
- return !!fdopendir (fd);])],
+#include <unistd.h>
+#if !HAVE_DECL_FDOPENDIR
+extern
+# ifdef __cplusplus
+"C"
+# endif
+DIR *fdopendir (int);
+#endif
+]], [int result = 0;
+ int fd = open ("conftest.c", O_RDONLY);
+ if (fd < 0) result |= 1;
+ if (fdopendir (fd)) result |= 2;
+ if (close (fd)) result |= 4;
+ return result;])],
[gl_cv_func_fdopendir_works=yes],
[gl_cv_func_fdopendir_works=no],
- [gl_cv_func_fdopendir_works="guessing no"])])
- if test "$gl_cv_func_fdopendir_works" != yes; then
- REPLACE_FDOPENDIR=1
- gl_REPLACE_DIRENT_H
- AC_LIBOBJ([fdopendir])
- fi
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_fdopendir_works="guessing yes" ;;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_fdopendir_works="guessing no" ;;
+ esac
+ ])])
+ case "$gl_cv_func_fdopendir_works" in
+ *yes) ;;
+ *)
+ REPLACE_FDOPENDIR=1
+ ;;
+ esac
fi
])