X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Flargefile.m4;h=515625dc267897a2ef54f1efa6874722c57a150a;hb=05d4ef79c00e77a54f781355c1cf4242a4e54c4b;hp=9515f7e9f6bbb0caeb3f6ee88818b4722fa306e6;hpb=e604bba569287736c197befc7e546048c2890a3a;p=gnulib.git

diff --git a/m4/largefile.m4 b/m4/largefile.m4
index 9515f7e9f..515625dc2 100644
--- a/m4/largefile.m4
+++ b/m4/largefile.m4
@@ -1,4 +1,4 @@
-#serial 5
+#serial 10
 
 dnl By default, many hosts won't let programs access large files;
 dnl one must use special compiler options to get large-file access to work.
@@ -12,23 +12,37 @@ dnl AC_SYS_LARGEFILE_FLAGS(FLAGSNAME)
 AC_DEFUN(AC_SYS_LARGEFILE_FLAGS,
   [AC_CACHE_CHECK([for $1 value to request large file support],
      ac_cv_sys_largefile_$1,
-     [ac_cv_sys_largefile_$1=`($GETCONF LFS_$1) 2>/dev/null` || {
+     [if ($GETCONF LFS_$1) >conftest.1 2>conftest.2 && test ! -s conftest.2
+      then
+        ac_cv_sys_largefile_$1=`cat conftest.1`
+      else
 	ac_cv_sys_largefile_$1=no
 	ifelse($1, CFLAGS,
 	  [case "$host_os" in
-	   # IRIX 6.2 and later require cc -n32.
-changequote(, )dnl
-	   irix6.[2-9]* | irix6.1[0-9]* | irix[7-9].* | irix[1-9][0-9]*)
-changequote([, ])dnl
+	   # HP-UX 10.20 requires -D__STDC_EXT__ with gcc 2.95.1.
+[	   hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)]
+	     if test "$GCC" = yes; then
+	       ac_cv_sys_largefile_CFLAGS=-D__STDC_EXT__
+	     fi
+	     ;;
+	   # IRIX 6.2 and later do not support large files by default,
+	   # so use the -n32 ABI unless the installer said otherwise.
+[	   irix6.[2-9]* | irix6.1[0-9]* | irix[7-9].* | irix[1-9][0-9]*)]
 	     if test "$GCC" != yes; then
-	       ac_cv_sys_largefile_CFLAGS=-n32
+	       case "$CC $CFLAGS " in
+	       *' -o32 '*|*' -n32 '*|*' -64 '*) ;;
+	       *) ac_cv_sys_largefile_CFLAGS=-n32 ;;
+	       esac
 	     fi
+	   esac
+	   if test "$ac_cv_sys_largefile_CFLAGS" != no; then
 	     ac_save_CC="$CC"
 	     CC="$CC $ac_cv_sys_largefile_CFLAGS"
 	     AC_TRY_LINK(, , , ac_cv_sys_largefile_CFLAGS=no)
 	     CC="$ac_save_CC"
-	   esac])
-      }])])
+	   fi])
+      fi
+      rm -f conftest*])])
 
 dnl Internal subroutine of AC_SYS_LARGEFILE.
 dnl AC_SYS_LARGEFILE_SPACE_APPEND(VAR, VAL)
@@ -47,17 +61,15 @@ dnl AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, CACHE-VAR, COMMENT, CODE-TO-SET-DEFAUL
 AC_DEFUN(AC_SYS_LARGEFILE_MACRO_VALUE,
   [AC_CACHE_CHECK([for $1], $2,
      [$2=no
-changequote(, )dnl
       $4
       for ac_flag in $ac_cv_sys_largefile_CFLAGS no; do
 	case "$ac_flag" in
 	-D$1)
 	  $2=1 ;;
 	-D$1=*)
-	  $2=`expr " $ac_flag" : '[^=]*=\(.*\)'` ;;
+	  $2=`expr " $ac_flag" : '[[^=]]*=\(.*\)'` ;;
 	esac
       done
-changequote([, ])dnl
       ])
    if test "[$]$2" != no; then
      AC_DEFINE_UNQUOTED([$1], [$]$2, [$3])
@@ -92,23 +104,30 @@ AC_DEFUN(AC_SYS_LARGEFILE,
        [Number of bits in a file offset, on hosts where this is settable.],
        [case "$host_os" in
 	# HP-UX 10.20 and later
-	hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
+[	hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)]
 	  ac_cv_sys_file_offset_bits=64 ;;
 	esac])
+     AC_SYS_LARGEFILE_MACRO_VALUE(_GNU_SOURCE,
+       ac_cv_sys_gnu_source,
+       [Define to make ftello visible on some hosts (e.g. glibc 2.1.3).],
+       [AC_TRY_COMPILE([#include <stdio.h>], [return !ftello;], ,
+	  [AC_TRY_COMPILE([#define _GNU_SOURCE 1
+#include <stdio.h>],
+	     [return !ftello;],
+	     ac_cv_sys_gnu_source=1)])])
      AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE,
        ac_cv_sys_largefile_source,
-       [Define to make fseeko etc. visible, on some hosts.],
-       [case "$host_os" in
-	# HP-UX 10.20 and later
-	hpux10.[2-9][0-9]* | hpux1[1-9]* | hpux[2-9][0-9]*)
-	  ac_cv_sys_largefile_source=1 ;;
-	esac])
+       [Define to make ftello visible on some hosts (e.g. HP-UX 10.20).],
+       [AC_TRY_COMPILE([#include <stdio.h>], [return !ftello;], ,
+	  [AC_TRY_COMPILE([#define _LARGEFILE_SOURCE 1
+#include <stdio.h>], [return !ftello;],
+	     ac_cv_sys_largefile_source=1)])])
      AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES,
        ac_cv_sys_large_files,
        [Define for large files, on AIX-style hosts.],
        [case "$host_os" in
 	# AIX 4.2 and later
-	aix4.[2-9]* | aix4.1[0-9]* | aix[5-9].* | aix[1-9][0-9]*)
+[	aix4.[2-9]* | aix4.1[0-9]* | aix[5-9].* | aix[1-9][0-9]*)]
 	  ac_cv_sys_large_files=1 ;;
 	esac])
    fi