revised libtool patch for POSIX 1003.1-2001 hosts

[Paul Eggert]

I slurped the latest libtool CVS and have a revision to my proposed
patch for POSIX 1003.1-2001 hosts.  First, this patch updates
ltmain.in, not ltmain.sh.  Second, this patch updates libtool.m4 too,
as libtool.m4 uses the command "head -1" which POSIX no longer allows
(and besides, the GNU coding standards says that configure shouldn't
invoke "head").

2002-02-21  Paul Eggert  <address@hidden>

        Port to POSIX 1003.1-2001 hosts.

        * libtool.m4 (AC_LIBTOOL_PROG_LD_SHLIBS): head -1 -> sed q
        * ltmain.in: Use "sort -u" rather than "sort +2 | uniq".
        As far as I can see, it's not necessary to sort based on the
        second column anyway.

diff -pru libtool/libtool.m4 libtool-posix/libtool.m4
--- libtool/libtool.m4  Thu Feb  7 11:54:36 2002
+++ libtool-posix/libtool.m4    Thu Feb 21 08:07:42 2002
@@ -4490,7 +4490,7 @@ EOF
       # If the export-symbols file already is a .def file (1st line
       # is EXPORTS), use it as is.
       # If DATA tags from a recent dlltool are present, honour them!
-      _LT_AC_TAGVAR(archive_expsym_cmds, $1)='if test "x`head -1 
$export_symbols`" = xEXPORTS; then
+      _LT_AC_TAGVAR(archive_expsym_cmds, $1)='if test "x`sed q 
$export_symbols`" = xEXPORTS; then
          cp $export_symbols $output_objdir/$soname-def;
        else
          echo EXPORTS > $output_objdir/$soname-def;
diff -pru libtool/ltmain.in libtool-posix/ltmain.in
--- libtool/ltmain.in   Thu Feb  7 11:54:36 2002
+++ libtool-posix/ltmain.in     Thu Feb 21 08:07:23 2002
@@ -3805,12 +3805,8 @@ extern \"C\" {
              $mv "$nlist"T "$nlist"
            fi
 
-           # Try sorting and uniquifying the output.
-           if grep -v "^: " < "$nlist" | sort +2 | uniq > "$nlist"S; then
-             :
-           else
-             grep -v "^: " < "$nlist" > "$nlist"S
-           fi
+           # Sort and uniquify the output.
+           grep -v "^: " < "$nlist" | sort -u > "$nlist"S
 
            if test -f "$nlist"S; then
              eval "$global_symbol_to_cdecl"' < "$nlist"S >> 
"$output_objdir/$dlsyms"'