(AC_SYS_LARGEFILE_FLAGS): Don't use -n32 on

IRIX if the installer said otherwise.

diff --git a/m4/largefile.m4 b/m4/largefile.m4
index 32d27cc..576a7ec 100644 (file)
--- a/m4/largefile.m4
+++ b/m4/largefile.m4
@@ -1,4 +1,4 @@
-#serial 8
+#serial 9
 
 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.
@@ -25,10 +25,14 @@ AC_DEFUN(AC_SYS_LARGEFILE_FLAGS,
               ac_cv_sys_largefile_CFLAGS=-D__STDC_EXT__
             fi
             ;;
-          # IRIX 6.2 and later require cc -n32.
+          # 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