autoconf-lib-link/m4/lib-ld.m4 port to POSIX 1003.1-2001

[Paul Eggert]

autoconf-lib-link/m4/lib-ld.m4 uses egrep, which isn't portable to
POSIX 1003.1-2001 hosts.  This code was originally derived from
libtool, which has been fixed to not use egrep.  Here's an untested
backport of that fix to gettext.

2003-06-17  Paul Eggert  <address@hidden>

        * lib-ld.m4 (AC_LIB_PROG_LD_GNU, AC_LIB_PROG_LD): Don't use
        egrep, for portability to POSIX 1003.1-2001.  This patch
        backported from Libtool 1.5.

===================================================================
RCS file: autoconf-lib-link/m4/lib-ld.m4,v
retrieving revision 0.12.1.0
retrieving revision 0.12.1.1
diff -pu -r0.12.1.0 -r0.12.1.1
--- autoconf-lib-link/m4/lib-ld.m4      2003/02/18 13:54:31     0.12.1.0
+++ autoconf-lib-link/m4/lib-ld.m4      2003/06/18 06:37:37     0.12.1.1
@@ -14,11 +14,12 @@ dnl From libtool-1.4. Sets the variable 
 AC_DEFUN([AC_LIB_PROG_LD_GNU],
 [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,
 [# I'd rather use --version here, but apparently some GNU ld's only accept -v.
-if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
-  acl_cv_prog_gnu_ld=yes
-else
-  acl_cv_prog_gnu_ld=no
-fi])
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  acl_cv_prog_gnu_ld=yes ;;
+*)
+  acl_cv_prog_gnu_ld=no ;;
+esac])
 with_gnu_ld=$acl_cv_prog_gnu_ld
 ])
 
@@ -88,11 +89,12 @@ AC_CACHE_VAL(acl_cv_path_LD,
       # Check to see if the program is GNU ld.  I'd rather use --version,
       # but apparently some GNU ld's only accept -v.
       # Break only if it was the GNU/non-GNU ld that we prefer.
-      if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > 
/dev/null; then
-       test "$with_gnu_ld" != no && break
-      else
-       test "$with_gnu_ld" != yes && break
-      fi
+      case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in
+      *GNU* | *'with BFD'*)
+       test "$with_gnu_ld" != no && break ;;
+      *)
+       test "$with_gnu_ld" != yes && break ;;
+      esac
     fi
   done
   IFS="$ac_save_ifs"