diff --git a/config/mkdetect/Makefile.in b/config/mkdetect/Makefile.in
index 5dc2e6dcc6f..0da3c857fde 100644
--- a/config/mkdetect/Makefile.in
+++ b/config/mkdetect/Makefile.in
@@ -33,15 +33,18 @@ DETECT_DIR	= $(topsrcdir)/config/mkdetect
 DETECT_NAME	= detect_$(DETECT_UNIQ_IDENT)_gen.mk
 
 # The glibc detection script
-DETECT_GLIBC	= $(DETECT_DIR)/detect_glibc.sh -o $(DETECT_UNIQ_IDENT)
+DETECT_GLIBC	= $(DETECT_DIR)/detect_glibc.sh -o $(DETECT_UNIQ_IDENT) \
+	-cc $(CC)
 
 # The motif detection script
 DETECT_MOTIF	=\
 				$(DETECT_DIR)/detect_motif.sh -o $(DETECT_UNIQ_IDENT) \
-				-xif $(X11_INCLUDE_FLAGS)
+				-xif $(X11_INCLUDE_FLAGS) \
+	-cc $(CC)
 
 # The X11 detection script
-DETECT_X11	= $(DETECT_DIR)/detect_x11.sh -o $(DETECT_UNIQ_IDENT)
+DETECT_X11	= $(DETECT_DIR)/detect_x11.sh -o $(DETECT_UNIQ_IDENT) \
+	-cc $(CC)
 
 # The following macros are generated:
 #