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diff --git a/gl/m4/fcntl_h.m4 b/gl/m4/fcntl_h.m4
index 1ae0b15a97e7e4c7a736e74e1f7a70777979a2e4..e41915c326b7a29458d34f82ef36a0e2549e6d75 100644 (file)
--- a/gl/m4/fcntl_h.m4
+++ b/gl/m4/fcntl_h.m4
+# serial 12
# Configure fcntl.h.
-dnl Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2007, 2009, 2010 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_FCNTL_H],
[
AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
- dnl Persuade glibc <fcntl.h> to define O_NOATIME and O_NOFOLLOW.
- AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
- AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h],
- [AC_RUN_IFELSE(
- [AC_LANG_PROGRAM(
- [[#include <sys/types.h>
- #include <sys/stat.h>
- #include <unistd.h>
- #include <fcntl.h>
- #ifndef O_NOATIME
- #define O_NOATIME 0
- #endif
- #ifndef O_NOFOLLOW
- #define O_NOFOLLOW 0
- #endif
- static int const constants[] =
- {
- O_CREAT, O_EXCL, O_NOCTTY, O_TRUNC, O_APPEND,
- O_NONBLOCK, O_SYNC, O_ACCMODE, O_RDONLY, O_RDWR, O_WRONLY
- };
- ]],
- [[
- int status = !constants;
- {
- static char const sym[] = "conftest.sym";
- if (symlink (".", sym) != 0
- || close (open (sym, O_RDONLY | O_NOFOLLOW)) == 0)
- status |= 32;
- }
- {
- static char const file[] = "confdefs.h";
- int fd = open (file, O_RDONLY | O_NOATIME);
- char c;
- struct stat st0, st1;
- if (fd < 0
- || fstat (fd, &st0) != 0
- || sleep (1) != 0
- || read (fd, &c, 1) != 1
- || close (fd) != 0
- || stat (file, &st1) != 0
- || st0.st_atime != st1.st_atime)
- status |= 64;
- }
- return status;]])],
- [gl_cv_header_working_fcntl_h=yes],
- [case $? in #(
- 32) gl_cv_header_working_fcntl_h='no (bad O_NOFOLLOW)';; #(
- 64) gl_cv_header_working_fcntl_h='no (bad O_NOATIME)';; #(
- 96) gl_cv_header_working_fcntl_h='no (bad O_NOATIME, O_NOFOLLOW)';; #(
- *) gl_cv_header_working_fcntl_h='no';;
- esac],
- [gl_cv_header_working_fcntl_h=cross-compiling])])
-
- case $gl_cv_header_working_fcntl_h in #(
- *O_NOATIME* | no | cross-compiling) ac_val=0;; #(
- *) ac_val=1;;
- esac
- AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOATIME], [$ac_val],
- [Define to 1 if O_NOATIME works.])
-
- case $gl_cv_header_working_fcntl_h in #(
- *O_NOFOLLOW* | no | cross-compiling) ac_val=0;; #(
- *) ac_val=1;;
- esac
- AC_DEFINE_UNQUOTED([HAVE_WORKING_O_NOFOLLOW], [$ac_val],
- [Define to 1 if O_NOFOLLOW works.])
-
+ AC_REQUIRE([gl_FCNTL_O_FLAGS])
gl_CHECK_NEXT_HEADERS([fcntl.h])
- FCNTL_H='fcntl.h'
- AC_SUBST([FCNTL_H])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use, if it is not common
+ dnl enough to be declared everywhere.
+ gl_WARN_ON_USE_PREPARE([[#include <fcntl.h>
+ ]], [fcntl openat])
])
AC_DEFUN([gl_FCNTL_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
- GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
])
AC_DEFUN([gl_FCNTL_H_DEFAULTS],
[
- GNULIB_OPEN=0; AC_SUBST([GNULIB_OPEN])
+ GNULIB_FCNTL=0; AC_SUBST([GNULIB_FCNTL])
+ GNULIB_OPEN=0; AC_SUBST([GNULIB_OPEN])
+ GNULIB_OPENAT=0; AC_SUBST([GNULIB_OPENAT])
dnl Assume proper GNU behavior unless another module says otherwise.
- REPLACE_OPEN=0; AC_SUBST([REPLACE_OPEN])
+ HAVE_FCNTL=1; AC_SUBST([HAVE_FCNTL])
+ HAVE_OPENAT=1; AC_SUBST([HAVE_OPENAT])
+ REPLACE_FCNTL=0; AC_SUBST([REPLACE_FCNTL])
+ REPLACE_OPEN=0; AC_SUBST([REPLACE_OPEN])
+ REPLACE_OPENAT=0; AC_SUBST([REPLACE_OPENAT])
])