diff -r 3ca3acefc66a -r 1ce14068ef31 configure
--- a/configure	Mon Oct 21 15:45:12 2024 +0200
+++ b/configure	Wed Oct 23 10:37:43 2024 +0200
@@ -719,7 +719,7 @@
     do
 
         cat >> "$TEMP_DIR/make.mk" << __EOF__
-OBJ_EXT = o
+OBJ_EXT = .o
 LIB_EXT = .a
 PACKAGE_SCRIPT = package_osx.sh
 __EOF__
@@ -739,7 +739,7 @@
     do
 
         cat >> "$TEMP_DIR/make.mk" << __EOF__
-OBJ_EXT = o
+OBJ_EXT = .o
 LIB_EXT = .a
 PACKAGE_SCRIPT = package_unix.sh
 __EOF__
@@ -982,6 +982,11 @@
             break
         fi
         fi
+        if checkopt_toolkit_gtk4 ; then
+            echo "  toolkit: gtk4" >> "$TEMP_DIR/options"
+            ERROR=0
+            break
+        fi
         if checkopt_toolkit_gtk3 ; then
             echo "  toolkit: gtk3" >> "$TEMP_DIR/options"
             ERROR=0