strtoumax: fix typo in previous commit.

[gnulib.git] / m4 / rename.m4

diff --git a/m4/rename.m4 b/m4/rename.m4
index 30daf0e..66430aa 100644 (file)
--- a/m4/rename.m4
+++ b/m4/rename.m4
@@ -1,6 +1,6 @@
-# serial 22
+# serial 26

 
 

-# Copyright (C) 2001, 2003, 2005-2006, 2009-2010 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2005-2006, 2009-2013 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.
 # 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.


@@ -28,35 +28,50 @@ AC_DEFUN([gl_FUNC_RENAME],
   dnl links are also broken.
   AC_CACHE_CHECK([whether rename honors trailing slash on destination],
     [gl_cv_func_rename_slash_dst_works],
   dnl links are also broken.
   AC_CACHE_CHECK([whether rename honors trailing slash on destination],
     [gl_cv_func_rename_slash_dst_works],

-    [rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.lnk
-    touch conftest.f && mkdir conftest.d1 ||
+    [rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk
+    touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||

       AC_MSG_ERROR([cannot create temporary files])
     # Assume that if we have lstat, we can also check symlinks.
     if test $ac_cv_func_lstat = yes; then
       ln -s conftest.f conftest.lnk
     fi
       AC_MSG_ERROR([cannot create temporary files])
     # Assume that if we have lstat, we can also check symlinks.
     if test $ac_cv_func_lstat = yes; then
       ln -s conftest.f conftest.lnk
     fi

-    AC_RUN_IFELSE([AC_LANG_PROGRAM([[
-#       include <stdio.h>
-#       include <stdlib.h>
-]], [if (rename ("conftest.f", "conftest.f1/") == 0) return 1;
-     if (rename ("conftest.d1", "conftest.d2/") != 0) return 2;
+    AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM([[
+#        include <stdio.h>
+#        include <stdlib.h>
+         ]],
+         [[int result = 0;
+           if (rename ("conftest.f1", "conftest.f2/") == 0)
+             result |= 1;
+           if (rename ("conftest.d1", "conftest.d2/") != 0)
+             result |= 2;

 #if HAVE_LSTAT
 #if HAVE_LSTAT

-     if (rename ("conftest.f", "conftest.lnk/") == 0) return 3;
+           if (rename ("conftest.f", "conftest.lnk/") == 0)
+             result |= 4;

 #endif
 #endif

-    ])],
+           return result;
+         ]])],

       [gl_cv_func_rename_slash_dst_works=yes],
       [gl_cv_func_rename_slash_dst_works=no],
       dnl When crosscompiling, assume rename is broken.
       [gl_cv_func_rename_slash_dst_works=yes],
       [gl_cv_func_rename_slash_dst_works=no],
       dnl When crosscompiling, assume rename is broken.

-      [gl_cv_func_rename_slash_dst_works="guessing no"])
-    rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.lnk
+      [case "$host_os" in
+                 # Guess yes on glibc systems.
+         *-gnu*) gl_cv_func_rename_slash_dst_works="guessing yes" ;;
+                 # If we don't know, assume the worst.
+         *)      gl_cv_func_rename_slash_dst_works="guessing no" ;;
+       esac
+      ])
+    rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk

   ])
   ])

-  if test "x$gl_cv_func_rename_slash_dst_works" != xyes; then
-    AC_LIBOBJ([rename])
-    REPLACE_RENAME=1
-    AC_DEFINE([RENAME_TRAILING_SLASH_DEST_BUG], [1],
-      [Define if rename does not correctly handle slashes on the destination
-       argument, such as on Solaris 10 or NetBSD 1.6.])
-  fi
+  case "$gl_cv_func_rename_slash_dst_works" in
+    *yes) ;;
+    *)
+      REPLACE_RENAME=1
+      AC_DEFINE([RENAME_TRAILING_SLASH_DEST_BUG], [1],
+        [Define if rename does not correctly handle slashes on the destination
+         argument, such as on Solaris 10 or NetBSD 1.6.])
+      ;;
+  esac

 
   dnl SunOS 4.1.1_U1 mistakenly forbids rename("dir/","name").
   dnl Solaris 9 mistakenly allows rename("file/","name").
 
   dnl SunOS 4.1.1_U1 mistakenly forbids rename("dir/","name").
   dnl Solaris 9 mistakenly allows rename("file/","name").


@@ -65,68 +80,105 @@ AC_DEFUN([gl_FUNC_RENAME],
   dnl symlinks with a trailing slash.
   AC_CACHE_CHECK([whether rename honors trailing slash on source],
     [gl_cv_func_rename_slash_src_works],
   dnl symlinks with a trailing slash.
   AC_CACHE_CHECK([whether rename honors trailing slash on source],
     [gl_cv_func_rename_slash_src_works],

-    [rm -rf conftest.f conftest.d1 conftest.d2 conftest.lnk
-    touch conftest.f && mkdir conftest.d1 ||
+    [rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
+    touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||

       AC_MSG_ERROR([cannot create temporary files])
     # Assume that if we have lstat, we can also check symlinks.
     if test $ac_cv_func_lstat = yes; then
       ln -s conftest.f conftest.lnk
     fi
       AC_MSG_ERROR([cannot create temporary files])
     # Assume that if we have lstat, we can also check symlinks.
     if test $ac_cv_func_lstat = yes; then
       ln -s conftest.f conftest.lnk
     fi

-    AC_RUN_IFELSE([AC_LANG_PROGRAM([[
-#       include <stdio.h>
-#       include <stdlib.h>
-]], [if (rename ("conftest.f/", "conftest.d2") == 0) return 1;
-     if (rename ("conftest.d1/", "conftest.d2") != 0) return 2;
+    AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM([[
+#        include <stdio.h>
+#        include <stdlib.h>
+         ]],
+         [[int result = 0;
+           if (rename ("conftest.f1/", "conftest.d3") == 0)
+             result |= 1;
+           if (rename ("conftest.d1/", "conftest.d2") != 0)
+             result |= 2;

 #if HAVE_LSTAT
 #if HAVE_LSTAT

-     if (rename ("conftest.lnk/", "conftest.f") == 0) return 3;
+           if (rename ("conftest.lnk/", "conftest.f") == 0)
+             result |= 4;

 #endif
 #endif

-    ])],
+           return result;
+         ]])],

       [gl_cv_func_rename_slash_src_works=yes],
       [gl_cv_func_rename_slash_src_works=no],
       dnl When crosscompiling, assume rename is broken.
       [gl_cv_func_rename_slash_src_works=yes],
       [gl_cv_func_rename_slash_src_works=no],
       dnl When crosscompiling, assume rename is broken.

-      [gl_cv_func_rename_slash_src_works="guessing no"])
-    rm -rf conftest.f conftest.d1 conftest.d2 conftest.lnk
+      [case "$host_os" in
+                 # Guess yes on glibc systems.
+         *-gnu*) gl_cv_func_rename_slash_src_works="guessing yes" ;;
+                 # If we don't know, assume the worst.
+         *)      gl_cv_func_rename_slash_src_works="guessing no" ;;
+       esac
+      ])
+    rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk

   ])
   ])

-  if test "x$gl_cv_func_rename_slash_src_works" != xyes; then
-    AC_LIBOBJ([rename])
-    REPLACE_RENAME=1
-    AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
-      [Define if rename does not correctly handle slashes on the source
-       argument, such as on Solaris 9 or cygwin 1.5.])
-  fi
+  case "$gl_cv_func_rename_slash_src_works" in
+    *yes) ;;
+    *)
+      REPLACE_RENAME=1
+      AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
+        [Define if rename does not correctly handle slashes on the source
+         argument, such as on Solaris 9 or cygwin 1.5.])
+      ;;
+  esac

 
   dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
   dnl on rename("h1","h2").
   dnl This bug requires stat'ting targets prior to attempting rename.
 
   dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
   dnl on rename("h1","h2").
   dnl This bug requires stat'ting targets prior to attempting rename.

+  AC_CHECK_FUNCS_ONCE([link])

   AC_CACHE_CHECK([whether rename manages hard links correctly],
     [gl_cv_func_rename_link_works],
   AC_CACHE_CHECK([whether rename manages hard links correctly],
     [gl_cv_func_rename_link_works],

-    [rm -rf conftest.f conftest.f1
-    if touch conftest.f && ln conftest.f conftest.f1 &&
-        set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
-      AC_RUN_IFELSE([AC_LANG_PROGRAM([[
-#       include <stdio.h>
-#       include <stdlib.h>
-#       include <unistd.h>
-]], [if (rename ("conftest.f", "conftest.f1")) return 1;
-     if (unlink ("conftest.f1")) return 2;
-     if (rename ("conftest.f", "conftest.f")) return 3;
-     if (rename ("conftest.f1", "conftest.f1") == 0) return 4;])],
-        [gl_cv_func_rename_link_works=yes],
-        [gl_cv_func_rename_link_works=no],
-        dnl When crosscompiling, assume rename is broken.
-        [gl_cv_func_rename_link_works="guessing no"])
-    else
-      gl_cv_func_rename_link_works="guessing no"
-    fi
-    rm -rf conftest.f conftest.f1
-  ])
-  if test "x$gl_cv_func_rename_link_works" != xyes; then
-    AC_LIBOBJ([rename])
-    REPLACE_RENAME=1
-    AC_DEFINE([RENAME_HARD_LINK_BUG], [1],
-      [Define if rename fails to leave hard links alone, as on NetBSD 1.6
-       or Cygwin 1.5.])
-  fi
+    [if test $ac_cv_func_link = yes; then
+       rm -rf conftest.f conftest.f1
+       if touch conftest.f && ln conftest.f conftest.f1 &&
+           set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
+         AC_RUN_IFELSE(
+           [AC_LANG_PROGRAM([[
+#             include <stdio.h>
+#             include <stdlib.h>
+#             include <unistd.h>
+              ]],
+              [[int result = 0;
+                if (rename ("conftest.f", "conftest.f1"))
+                  result |= 1;
+                if (unlink ("conftest.f1"))
+                  result |= 2;
+                if (rename ("conftest.f", "conftest.f"))
+                  result |= 4;
+                if (rename ("conftest.f1", "conftest.f1") == 0)
+                  result |= 8;
+                return result;
+              ]])],
+           [gl_cv_func_rename_link_works=yes],
+           [gl_cv_func_rename_link_works=no],
+           dnl When crosscompiling, assume rename is broken.
+           [case "$host_os" in
+                      # Guess yes on glibc systems.
+              *-gnu*) gl_cv_func_rename_link_works="guessing yes" ;;
+                      # If we don't know, assume the worst.
+              *)      gl_cv_func_rename_link_works="guessing no" ;;
+            esac
+           ])
+       else
+         gl_cv_func_rename_link_works="guessing no"
+       fi
+       rm -rf conftest.f conftest.f1
+     else
+       gl_cv_func_rename_link_works=yes
+     fi
+    ])
+  case "$gl_cv_func_rename_link_works" in
+    *yes) ;;
+    *)
+      REPLACE_RENAME=1
+      AC_DEFINE([RENAME_HARD_LINK_BUG], [1],
+        [Define if rename fails to leave hard links alone, as on NetBSD 1.6
+         or Cygwin 1.5.])
+      ;;
+  esac

 
   dnl Cygwin 1.5.x mistakenly allows rename("dir","file").
   dnl mingw mistakenly forbids rename("dir1","dir2").
 
   dnl Cygwin 1.5.x mistakenly allows rename("dir","file").
   dnl mingw mistakenly forbids rename("dir1","dir2").


@@ -137,22 +189,37 @@ AC_DEFUN([gl_FUNC_RENAME],
     [rm -rf conftest.f conftest.d1 conftest.d2
     touch conftest.f && mkdir conftest.d1 conftest.d2 ||
       AC_MSG_ERROR([cannot create temporary files])
     [rm -rf conftest.f conftest.d1 conftest.d2
     touch conftest.f && mkdir conftest.d1 conftest.d2 ||
       AC_MSG_ERROR([cannot create temporary files])

-    AC_RUN_IFELSE([AC_LANG_PROGRAM([[
-#       include <stdio.h>
-#       include <stdlib.h>
-]], [if (rename ("conftest.d1", "conftest.d2") != 0) return 1;
-     if (rename ("conftest.d2", "conftest.f") == 0) return 2;])],
+    AC_RUN_IFELSE(
+      [AC_LANG_PROGRAM([[
+#        include <stdio.h>
+#        include <stdlib.h>
+         ]],
+         [[int result = 0;
+           if (rename ("conftest.d1", "conftest.d2") != 0)
+             result |= 1;
+           if (rename ("conftest.d2", "conftest.f") == 0)
+             result |= 2;
+           return result;
+         ]])],

       [gl_cv_func_rename_dest_works=yes],
       [gl_cv_func_rename_dest_works=no],
       dnl When crosscompiling, assume rename is broken.
       [gl_cv_func_rename_dest_works=yes],
       [gl_cv_func_rename_dest_works=no],
       dnl When crosscompiling, assume rename is broken.

-      [gl_cv_func_rename_dest_works="guessing no"])
+      [case "$host_os" in
+                 # Guess yes on glibc systems.
+         *-gnu*) gl_cv_func_rename_dest_works="guessing yes" ;;
+                 # If we don't know, assume the worst.
+         *)      gl_cv_func_rename_dest_works="guessing no" ;;
+       esac
+      ])

     rm -rf conftest.f conftest.d1 conftest.d2
   ])
     rm -rf conftest.f conftest.d1 conftest.d2
   ])

-  if test "x$gl_cv_func_rename_dest_works" != xyes; then
-    AC_LIBOBJ([rename])
-    REPLACE_RENAME=1
-    AC_DEFINE([RENAME_DEST_EXISTS_BUG], [1],
-      [Define if rename does not work when the destination file exists,
-       as on Cygwin 1.5 or Windows.])
-  fi
+  case "$gl_cv_func_rename_dest_works" in
+    *yes) ;;
+    *)
+      REPLACE_RENAME=1
+      AC_DEFINE([RENAME_DEST_EXISTS_BUG], [1],
+        [Define if rename does not work when the destination file exists,
+         as on Cygwin 1.5 or Windows.])
+      ;;
+  esac

 ])
 ])