* configure.in (FREETYPE_LIBS): Actually set it to something.

This was needed for linking a lucid toolkit build on a recent
Debian testing system.  Without this, it failed with:
ftfont.o: undefined reference to symbol 'FT_New_Face'

ChangeLog

+2011-03-06  Glenn Morris  <rgm@gnu.org>
+
+	* configure.in (FREETYPE_LIBS): Actually set it to something.
+
 2011-03-02  Paul Eggert  <eggert@cs.ucla.edu>
 
 	Work around some portability problems with symlinks.

configure.in

@@ -2244,15 +2244,23 @@ if test "${HAVE_X11}" = "yes"; then
       fi                          # "$HAVE_XFT" != no
     fi                            # "x${with_xft}" != "xno"
 
-    dnl For the "Does Emacs use" message at the end.
+    ## We used to allow building with FreeType and without Xft.
+    ## However, the ftx font backend driver is not in good shape.
     if test "$HAVE_XFT" != "yes"; then
+       dnl For the "Does Emacs use" message at the end.
        HAVE_XFT=no
+       HAVE_FREETYPE=no
+    else
+       dnl Strict linkers fail with
+       dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
+       dnl if -lfreetype is not specified.
+       dnl The following is needed to set FREETYPE_LIBS.
+       PKG_CHECK_MODULES(FREETYPE, freetype2, HAVE_FREETYPE=yes,
+			 HAVE_FREETYPE=no) 
+
+       test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
     fi
 
-    ## We used to allow building with FreeType and without Xft.
-    ## However, the ftx font backend driver is not in good shape.
-    HAVE_FREETYPE=$HAVE_XFT
-
     HAVE_LIBOTF=no
     if test "${HAVE_FREETYPE}" = "yes"; then
       AC_DEFINE(HAVE_FREETYPE, 1,