bootstrap: remove more dangling symlinks

[Jim Meyering]

FYI, I've just pushed the following.  I was tempted to remove all
dangling symlinks, or all in any gnulib-managed directory, but that
seemed a little too broad.  Since I've been regularly distracted by
errors involving dangling *.[ch] files in lib/, I've limited it to those.
We can always enlarge the set later, if needed.

        bootstrap: remove dangling *.[ch] symlinks from lib
        * build-aux/bootstrap [dangling symlink removal]: Move find's
        -depth option to precede all others, to avoid a warning.
        Remove *.[ch] files too, and from "$source_base" (usually lib/).

diff --git a/build-aux/bootstrap b/build-aux/bootstrap
index 1c90df7..9a85762 100755
--- a/build-aux/bootstrap
+++ b/build-aux/bootstrap
@@ -548,15 +548,17 @@ if test -f $mam_template; then
   done
 fi

-# Remove any dangling symlink matching "*.m4" in the gnulib-populated
-# $m4_base directory, since such a file would cause aclocal to fail.
+# Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
+# gnulib-populated directories.  Such .m4 files would cause aclocal to fail.
 # The following requires GNU find 4.2.3 or newer.  Considering the usual
 # portability constraints of this script, that may seem a very demanding
 # requirement, but it should be ok.  Ignore any failure, which is fine,
 # since this is only a convenience to help developers avoid the relatively
 # unusual case in which a symlinked-to .m4 file is git-removed from gnulib
 # between successive runs of this script.
-find "$m4_base" -name '*.m4' -depth -type l -xtype l -delete > /dev/null 2>&1
+find "$m4_base" "$source_base" \
+  -depth \( -name '*.m4' -o -name '*.[ch]' \) \
+  -type l -xtype l -delete > /dev/null 2>&1

 # Reconfigure, getting other files.

--
1.5.5.rc2.26.g7bba