Update autoconf for GTK 2. We now check for both GTK2 and GTK1, and

in the presence of GTK 2 we also check to see whether we have a
prehistoric Pango (since Pango itself helpfully doesn't provide that
functionality, bah).

[originally from svn r7964]

unix/GTK2.TODO

@@ -1,25 +1,13 @@
 TODO for PuTTY GTK2 port before merging back into main trunk code
 -----------------------------------------------------------------
 
-Things to do before deciding a merge is feasible:
+Things left to do:
-
- - Update the autoconf build. Richard B says he had to replace
-     AM_PATH_GTK([1.2.0],
-   with
-     AM_PATH_GTK_2_0([2.0.0],
-    + also I'll need to detect early Pangoi and enable my magic
-      switches in gtkfont.c.
-    + and I'll probably also want to detect GTK2 vs GTK1
-      automatically - _and_ provide a command line switch on
-      configure to select one manually.
-
-Things to do once GTK2 development is complete:
 
  - Make sure we haven't broken GTK1.
     + In particular, I know I _have_ broken GTK1 by taking out all
       the GTK1-style list box code. Put it all back in under ifdefs,
       which will be unpleasant but necessary.
 
-Things to do at point of actual merge:
+ - Merge to trunk. Colin is already mentioned in the licence in all
-
+   the branched copies, but mention him in the _website's_ licence
- - Mention Colin in the website's licence page.
+   page too.

unix/configure.ac

@@ -18,7 +18,23 @@ AC_CHECK_HEADERS([utmpx.h sys/select.h],,,[
 #include <sys/types.h>
 #include <utmp.h>])
 
-AM_PATH_GTK([1.2.0], [all_targets="all-cli all-gtk"], [all_targets="all-cli"])
+# Look for both GTK 1 and GTK 2.
+AM_PATH_GTK([1.2.0], [gtk=1], [gtk=none])
+AM_PATH_GTK_2_0([2.0.0], [gtk=2], [])
+if test "$gtk" = "none"; then
+  all_targets="all-cli"
+else
+  all_targets="all-cli all-gtk"
+fi
+if test "$gtk" = "2"; then
+  ac_save_CFLAGS="$CFLAGS"
+  ac_save_LIBS="$LIBS"
+  CFLAGS="$CFLAGS $GTK_CFLAGS"
+  LIBS="$GTK_LIBS $LIBS"
+  AC_CHECK_FUNCS([pango_font_family_is_monospace pango_font_map_list_families])
+  CFLAGS="$ac_save_CFLAGS"
+  LIBS="$ac_save_LIBS"
+fi
 AC_SUBST([all_targets])
 
 AC_SEARCH_LIBS([socket], [xnet])
@@ -48,4 +64,10 @@ AH_BOTTOM([
 #ifndef HAVE_SYS_SELECT_H
 # define HAVE_NO_SYS_SELECT_H
 #endif
+#ifndef HAVE_PANGO_FONT_FAMILY_IS_MONOSPACE
+# define PANGO_PRE_1POINT4
+#endif
+#ifndef HAVE_PANGO_FONT_MAP_LIST_FAMILIES
+# define PANGO_PRE_1POINT6
+#endif
 ])