diff --git a/zshrc b/zshrc
index d9d348b..56038c0 100644
--- a/zshrc
+++ b/zshrc
@@ -471,6 +471,9 @@ cross() {
 
 		export PATH="$prefix/cross-djgpp/bin:$PATH"
 		export cross_host="i586-pc-msdosdjgpp"
+		local build="$(LC_ALL=C gcc -v 2>&1 |
+		               awk '/^Target:/ { print $2 }')"
+		export objfw_configure_flags="--build=$build"
 		;;
 	ios | iossim)
 		if ! __has_command xcrun; then