Disable gtk2 support by deleting all references to the gtk+-2.0.pc pkg-config file.
https://github.com/jedsoft/jed/issues/11
--- configure.orig	2009-12-13 20:12:55.000000000 -0600
+++ configure	2024-04-24 17:14:41.000000000 -0500
@@ -11773,7 +11773,7 @@
     else
         if test -n "$PKG_CONFIG" && \
     { (echo "$as_me:$LINENO: \$PKG_CONFIG --exists --print-errors \"gtk+-2.0 >= 2.8.0\"") >&5
-  ($PKG_CONFIG --exists --print-errors "gtk+-2.0 >= 2.8.0") 2>&5
+  false
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; then
@@ -11791,7 +11791,7 @@
     else
         if test -n "$PKG_CONFIG" && \
     { (echo "$as_me:$LINENO: \$PKG_CONFIG --exists --print-errors \"gtk+-2.0 >= 2.8.0\"") >&5
-  ($PKG_CONFIG --exists --print-errors "gtk+-2.0 >= 2.8.0") 2>&5
+  false
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; then
@@ -11813,11 +11813,6 @@
 else
         _pkg_short_errors_supported=no
 fi
-        if test $_pkg_short_errors_supported = yes; then
-	        GTK_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "gtk+-2.0 >= 2.8.0"`
-        else
-	        GTK_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "gtk+-2.0 >= 2.8.0"`
-        fi
 	# Put the nasty error message in config.log where it belongs
 	echo "$GTK_PKG_ERRORS" >&5