Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -207,10 +207,11 @@
 			], [
 			AC_MSG_RESULT(yes, with -march=i486)
 			atomic_ops="gcc builtins (with -march=i486)"
 			AC_DEFINE(OF_HAVE_GCC_ATOMIC_OPS, 1,
 				[Whether gcc atomic operations are available])
+			AC_SUBST(ATOMIC_OBJCFLAGS, "-march=i486")
 			], [
 			AC_MSG_RESULT(no)
 			OBJCFLAGS="$old_OBJCFLAGS"])])
 
 	if test x"$atomic_ops" = x"none"; then

Index: objfw-config.in
==================================================================
--- objfw-config.in
+++ objfw-config.in
@@ -4,11 +4,11 @@
 libdir="@libdir@"
 CFLAGS=""
 CPPFLAGS="-I@includedir@"
 CXXFLAGS=""
 OBJCFLAGS="-fexceptions -fobjc-exceptions -fconstant-string-class=OFConstString"
-OBJCFLAGS="$OBJCFLAGS @NO_CONST_CFSTRINGS@ @NO_WARN_UNUSED@"
+OBJCFLAGS="$OBJCFLAGS @NO_CONST_CFSTRINGS@ @NO_WARN_UNUSED@ @ATOMIC_OBJCFLAGS@"
 LDFLAGS=""
 LDFLAGS_RPATH="@LDFLAGS_RPATH@"
 LIBS="-L${libdir} -lobjfw @LIBS@"
 VERSION="0.1"