- better distinction between CFLAGS and CPPFLAGS.

Makefile.custom

@@ -110,8 +110,20 @@ docs/busybox.net/BusyBox.html: docs/busybox.pod
 syn_tgt = $(wildcard $(patsubst %,%/*.c,$(busybox-alldirs)))
 syn     = $(patsubst %.c, %.syn, $(syn_tgt))
 
+comma:= ,
+brace_open:= (
+brace_close:= )
+
+SYN_CPPFLAGS := $(strip $(CPPFLAGS) $(EXTRA_CPPFLAGS))
+SYN_CPPFLAGS := $(subst $(brace_open),\$(brace_open),$(SYN_CPPFLAGS))
+SYN_CPPFLAGS := $(subst $(brace_close),\$(brace_close),$(SYN_CPPFLAGS))
+#SYN_CPPFLAGS := $(subst ",\",$(SYN_CPPFLAGS))
+#")
+#SYN_CPPFLAGS := [$(patsubst %,'%'$(comma),$(SYN_CPPFLAGS))'']
+
 %.syn: %.c
-	synopsis --verbose --debug -p C -l Comments.SSDFilter,Comments.Previous $(INCS) -Wp,verbose=True,debug=True,preprocess=True,cppflags="'$(CFLAGS) $(EXTRA_CFLAGS) $(LDFLAGS) $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) $(APPLETS_DEFINE) $(BUSYBOX_DEFINE)'" -o $@ $<
+	$(warning fla='$(SYN_CPPFLAGS)')
+	synopsis -p C -l Comments.SSDFilter,Comments.Previous -Wp,preprocess=True,cppflags="'$(SYN_CPPFLAGS)'" -o $@ $<
 
 .PHONY: html
 html: $(syn)