X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=m4%2Ffcntl_h.m4;h=cac28aeb28376da58286f5d17c5800220d5c0db2;hb=dc84183747ce1703eb99685b5dbde1f65a143c06;hp=223fa4830a428311c3aefda9004e903503182bf8;hpb=c7e61475680fa226bd9b8bdd469cd66914e630f5;p=debian%2Fgzip

diff --git a/m4/fcntl_h.m4 b/m4/fcntl_h.m4
index 223fa48..cac28ae 100644
--- a/m4/fcntl_h.m4
+++ b/m4/fcntl_h.m4
@@ -1,6 +1,6 @@
-# serial 6
+# serial 15
 # Configure fcntl.h.
-dnl Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2007, 2009-2012 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.
@@ -11,98 +11,40 @@ AC_DEFUN([gl_FCNTL_H],
 [
   AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
   AC_REQUIRE([gl_FCNTL_O_FLAGS])
-  gl_CHECK_NEXT_HEADERS([fcntl.h])
-  FCNTL_H='fcntl.h'
-  AC_SUBST([FCNTL_H])
-])
+  gl_NEXT_HEADERS([fcntl.h])
 
-# Test whether the flags O_NOATIME and O_NOFOLLOW actually work.
-# Define HAVE_WORKING_O_NOATIME to 1 if O_NOATIME works, or to 0 otherwise.
-# Define HAVE_WORKING_O_NOFOLLOW to 1 if O_NOFOLLOW works, or to 0 otherwise.
-AC_DEFUN([gl_FCNTL_O_FLAGS],
-[
-  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;
-	      unlink (sym);
-	    }
-	    {
-	      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])])
+  dnl Ensure the type pid_t gets defined.
+  AC_REQUIRE([AC_TYPE_PID_T])
 
-  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.])
+  dnl Ensure the type mode_t gets defined.
+  AC_REQUIRE([AC_TYPE_MODE_T])
 
-  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.])
+  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_OPENAT=0;  AC_SUBST([GNULIB_OPENAT])
+  GNULIB_FCNTL=0;        AC_SUBST([GNULIB_FCNTL])
+  GNULIB_NONBLOCKING=0;  AC_SUBST([GNULIB_NONBLOCKING])
+  GNULIB_OPEN=0;         AC_SUBST([GNULIB_OPEN])
+  GNULIB_OPENAT=0;       AC_SUBST([GNULIB_OPENAT])
   dnl Assume proper GNU behavior unless another module says otherwise.
-  HAVE_OPENAT=1;    AC_SUBST([HAVE_OPENAT])
-  REPLACE_OPEN=0;   AC_SUBST([REPLACE_OPEN])
-  REPLACE_OPENAT=0; AC_SUBST([REPLACE_OPENAT])
+  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])
 ])