[RFA/RFC] disable-nls if msgfmt could not be found

[Joel Brobecker <brobecker@gnat.com>]

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[I am resending this message that was only sent to gdb-patches@]

Hello,

Some users building GDB on systems where msgfmt is not available were
blocked when the build failed (in bfd, and probably another subdir
that I can't remember). See
http://sources.redhat.com/ml/gdb/2003-02/msg00310.html.

Instead of adding the checks in each subdir, I thought that it might be
better to do the check for msgfmt in the toplevel configure, and pass
--disable-nls to the subdir configure commands if not found. The
following patches tries to do this, and has been tested on a hpux box
where msgfmt is missing, and on a linux machine where msgfmt was
available.

Ideally, we want to do the check for msgfmt only if --disable-nls was
not already specified. However, the only consequence of not checking   
for the presence of --disable-nls is that we might have more than one
--disable/enable-nls switches on the subdir configure commands. I
think it will be ok, since I've placed the --disable-nls at the end
so it should overide the user's switch. An AC_MSG_WARN may also have   
been nice, but I decided against it because seeing a warning even
when the user has specified --disable-nls would seem strange...

Would the following change be acceptable for inclusion?

2003-03-17  J. Brobecker  <brobecker@gnat.com>

        * configure.in: Add check for msgfmt, configure subdirs with
        --disable-nls if not found.
        * configure: Regenerate.

-- 
Joel

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Index: configure.in
===================================================================
RCS file: /cvs/src/src/configure.in,v
retrieving revision 1.158
diff -c -3 -r1.158 configure.in
*** configure.in	12 Mar 2003 20:47:07 -0000	1.158
--- configure.in	18 Mar 2003 03:43:33 -0000
***************
*** 1824,1829 ****
--- 1824,1838 ----
    *) gxx_include_dir=${with_gxx_include_dir} ;;
  esac
  
+ # Check that msgfmt can be found in the PATH, or configure with
+ # --disable-nls to avoid a build failure.
+ AC_CHECK_PROG(MSGFMT, msgfmt, msgfmt, )
+ if [ test "x$MSGFMT" = "x" ]; then
+   build_configargs="${build_configargs} --disable-nls"
+   host_configargs="${host_configargs} --disable-nls"
+   target_configargs="${target_configargs} --disable-nls"
+ fi
+ 
  FLAGS_FOR_TARGET=
  case " $target_configdirs " in
   *" newlib "*)