makefiles: Generate the crosstest disabled rule from makedep.

configure

@@ -18198,9 +18198,6 @@ Makefile: $srcdir/Makefile.in config.status \$(MAKEDEP)
 depend: \$(MAKEDEP) dummy
 	\$(MAKEDEP)"
 
-test -n "$CROSSTARGET" || wine_fn_append_rule "crosstest:
-	@echo \"crosstest is not supported (mingw not installed?)\" && false"
-
 if test "x$enable_fonts" != xno; then
 ac_config_links="$ac_config_links fonts/marlett.ttf:fonts/marlett.ttf"
 ac_config_links="$ac_config_links fonts/symbol.ttf:fonts/symbol.ttf"

configure.ac

@@ -2797,10 +2797,6 @@ Makefile: $srcdir/Makefile.in config.status \$(MAKEDEP)
 depend: \$(MAKEDEP) dummy
 	\$(MAKEDEP)])
 
-test -n "$CROSSTARGET" || WINE_APPEND_RULE(
-[crosstest:
-	@echo \"crosstest is not supported (mingw not installed?)\" && false])
-
 WINE_CONFIG_SYMLINK(fonts,fonts,[marlett.ttf,symbol.ttf,tahoma.ttf,tahomabd.ttf,wingding.ttf],enable_fonts)
 WINE_CONFIG_SYMLINK(loader,loader,[l_intl.nls])
 WINE_CONFIG_SYMLINK(,tools,[wine],,winewrapper)

tools/makedep.c

@@ -3547,13 +3547,13 @@ static void output_subdirs( struct makefile *make )
         strarray_add( &make->phony_targets, "check" );
         strarray_add( &make->phony_targets, "test" );
     }
-    if (crosstest_deps.count)
-    {
-        output( "crosstest:" );
-        output_filenames( crosstest_deps );
-        output( "\n" );
-        strarray_add( &make->phony_targets, "crosstest" );
-    }
+    output( "crosstest:" );
+    output_filenames( crosstest_deps );
+    output( "\n" );
+    if (!crosstest_deps.count)
+        output( "\t@echo \"crosstest is not supported (mingw not installed?)\" && false\n" );
+    strarray_add( &make->phony_targets, "crosstest" );
+
     output( "clean::\n");
     output_rm_filenames( clean_files );
     output( "testclean::\n");