diff --git a/config.gnu.mk b/config.gnu.mk
index b02f38d..3409874 100644
--- a/config.gnu.mk
+++ b/config.gnu.mk
@@ -108,6 +108,6 @@ CONFIG_FLAGS=$(shell grep '// [A-Z]*FLAGS=' "$<" | sed -e 's|// [A-Z]*FLAGS=||g'
 
 CC_CONFIG=	echo '\#define' HAVE_$(CONFIG_UPPER)_H $(shell $(CC) $(CFLAGS) $(CFLAGS_CONFIG_$*) $(CONFIG_FLAGS) "$<" -o "$<".exe > "$<".err 2>&1 && "$<".exe > "$<".out && echo 1 || echo 0) | sed -e 's|^\#define \(.*\) 0$$|/* \#undef \1 */|g' > "$@"; [ -f "$<".out ] && cat >> "$@" "$<".out; true
 CXX_CONFIG=	echo '\#define' HAVE_$(CONFIG_UPPER) $(shell $(CXX) $(CXXFLAGS) $(CXXFLAGS_CONFIG_$*) $(CONFIG_FLAGS) "$<" -o "$<".exe > "$<".err 2>&1 && "$<".exe > "$<".out && echo 1 || echo 0) | sed -e 's|^\#define \(.*\) 0$$|/* \#undef \1 */|g' > "$@"; [ -f "$<".out ] && cat >> "$@" "$<".out; true
-LIB_CONFIG=	echo '\#define HAVE_LIB'$(CONFIG_UPPER) $$($(CC) $(CCFLAGS) $(CFLAGS_CONFIG_$*) -l$* "$<" -o "$<".exe > "$<".err 2>&1 && "$<".exe && echo 1 || echo 0) | sed -e 's|^\#define \(.*\) 0$$|/* \#undef \1 */|g' > "$@"
-FN_CONFIG=	echo '\#define HAVE_'$(CONFIG_UPPER) $$($(CC) $(CCFLAGS) $(CFLAGS_CONFIG_$*) "$<" -o "$<".exe > "$<".err 2>&1 && "$<".exe > "$<".out && echo 1 || echo 0) | sed -e 's|^\#define \(.*\) 0$$|/* \#undef \1 */|g' > "$@"; [ -f "$<".out ] && cat >> "$@" "$<".out; true
+LIB_CONFIG=	echo '\#define HAVE_LIB'$(CONFIG_UPPER) $$($(CC) $(CFLAGS) $(CFLAGS_CONFIG_$*) -l$* "$<" -o "$<".exe > "$<".err 2>&1 && "$<".exe && echo 1 || echo 0) | sed -e 's|^\#define \(.*\) 0$$|/* \#undef \1 */|g' > "$@"
+FN_CONFIG=	echo '\#define HAVE_'$(CONFIG_UPPER) $$($(CC) $(CFLAGS) $(CFLAGS_CONFIG_$*) "$<" -o "$<".exe > "$<".err 2>&1 && "$<".exe > "$<".out && echo 1 || echo 0) | sed -e 's|^\#define \(.*\) 0$$|/* \#undef \1 */|g' > "$@"; [ -f "$<".out ] && cat >> "$@" "$<".out; true
 MAKE_CONFIG=	sed -e 's|^\#define \(.*\) \(.*\)$$|\1=\2|g' -e 's|.*undef.*||g' < "$<" > "$@"