Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -163,11 +163,12 @@
 		], [
 		OFConstString *test = @"";
 		test++; /* Get rid of unused variable warning */
 		], [AC_MSG_RESULT(no)], [
 		AC_MSG_RESULT([yes, adding -Wno-unused-variable])
-		OBJCFLAGS="$OBJCFLAGS -Wno-unused-variable"])
+		OBJCFLAGS="$OBJCFLAGS -Wno-unused-variable"
+		AC_SUBST(NO_WARN_UNUSED, "-Wno-unused-variable")])
 
 	AC_MSG_CHECKING(whether we need -Wno-strict-aliasing due to gcc bugs)
 	AC_TRY_COMPILE([
 		#import <objc/objc.h>
 

Index: objfw-config.in
==================================================================
--- objfw-config.in
+++ objfw-config.in
@@ -5,11 +5,11 @@
 CFLAGS=""
 CPPFLAGS="-I@includedir@ -DOF_CONFIGURED @ENDIANESS_DEF@ @ASPRINTF_DEF@"
 CPPFLAGS="$CPPFLAGS @OFPLUGINS_DEF@"
 CXXFLAGS=""
 OBJCFLAGS="-fobjc-exceptions -fconstant-string-class=OFConstString"
-OBJCFLAGS="$OBJCFLAGS @NO_CONST_CFSTRINGS@"
+OBJCFLAGS="$OBJCFLAGS @NO_CONST_CFSTRINGS@ @NO_WARN_UNUSED@"
 LDFLAGS="@RPATH_LDFLAGS@"
 LIBS="-L${libdir} -lobjfw @LIBS@"
 VERSION="0.1"
 
 show_help() {