X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fmkstemp.m4;h=20d8a1b70151ef7197f52cb5f0d2459a02180afa;hb=959d9cb463d992f9c5cc2fbeb54bf12eee2346f7;hp=091978884113e90a7488817a97b4de084aef6c03;hpb=7c3f8da8f075e3813ced160d5b53a28c6f7dfe78;p=gnulib.git

diff --git a/m4/mkstemp.m4 b/m4/mkstemp.m4
index 091978884..20d8a1b70 100644
--- a/m4/mkstemp.m4
+++ b/m4/mkstemp.m4
@@ -1,6 +1,6 @@
-#serial 12
+#serial 17
 
-# Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -12,48 +12,41 @@
 # only 32 files per process.
 # On systems like the above, arrange to use the replacement function.
 AC_DEFUN([gl_FUNC_MKSTEMP],
-[dnl
-  AC_REPLACE_FUNCS(mkstemp)
-  if test $ac_cv_func_mkstemp = no; then
-    gl_cv_func_mkstemp_limitations=yes
-  else
-    AC_CACHE_CHECK([for mkstemp limitations],
-      gl_cv_func_mkstemp_limitations,
-      [
-        mkdir conftest.mkstemp
-	AC_TRY_RUN([
-#           include <stdlib.h>
-#           include <unistd.h>
-	    int main ()
-	    {
-	      int i;
-	      for (i = 0; i < 70; i++)
-		{
-		  char template[] = "conftest.mkstemp/coXXXXXX";
-		  int fd = mkstemp (template);
-		  if (fd == -1)
-		    exit (1);
-		  close (fd);
-		}
-	      exit (0);
-	    }
-	    ],
-	  gl_cv_func_mkstemp_limitations=no,
-	  gl_cv_func_mkstemp_limitations=yes,
-	  gl_cv_func_mkstemp_limitations=yes
-	  )
-        rm -rf conftest.mkstemp
-      ]
-    )
-  fi
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([AC_SYS_LARGEFILE])
+
+  AC_CACHE_CHECK([for working mkstemp],
+    [gl_cv_func_working_mkstemp],
+    [
+      mkdir conftest.mkstemp
+      AC_RUN_IFELSE(
+	[AC_LANG_PROGRAM(
+	  [AC_INCLUDES_DEFAULT],
+	  [[int i;
+	    off_t large = (off_t) 4294967295u;
+	    if (large < 0)
+	      large = 2147483647;
+	    for (i = 0; i < 70; i++)
+	      {
+		char templ[] = "conftest.mkstemp/coXXXXXX";
+		int (*mkstemp_function) (char *) = mkstemp;
+		int fd = mkstemp_function (templ);
+		if (fd < 0 || lseek (fd, large, SEEK_SET) != large)
+		  return 1;
+		close (fd);
+	      }
+	    return 0;]])],
+	[gl_cv_func_working_mkstemp=yes],
+	[gl_cv_func_working_mkstemp=no],
+	[gl_cv_func_working_mkstemp=no])
+      rm -rf conftest.mkstemp
+    ])
 
-  if test $gl_cv_func_mkstemp_limitations = yes; then
-    AC_LIBOBJ(mkstemp)
-    AC_LIBOBJ(tempname)
-    AC_DEFINE(mkstemp, rpl_mkstemp,
-      [Define to rpl_mkstemp if the replacement function should be used.])
+  if test $gl_cv_func_working_mkstemp != yes; then
+    REPLACE_MKSTEMP=1
+    AC_LIBOBJ([mkstemp])
     gl_PREREQ_MKSTEMP
-    gl_PREREQ_TEMPNAME
   fi
 ])
 
@@ -61,12 +54,3 @@ AC_DEFUN([gl_FUNC_MKSTEMP],
 AC_DEFUN([gl_PREREQ_MKSTEMP],
 [
 ])
-
-# Prerequisites of lib/tempname.c.
-AC_DEFUN([gl_PREREQ_TEMPNAME],
-[
-  AC_CHECK_HEADERS_ONCE(sys/time.h)
-  AC_CHECK_FUNCS(__secure_getenv gettimeofday)
-  AC_CHECK_DECLS_ONCE(getenv)
-  AC_REQUIRE([gl_AC_TYPE_UINTMAX_T])
-])