Preprocessing does not need all the flags

diff --git a/Makefile b/Makefile
index 618e4b6032da9d8f0b0f360f295b3d7936b5210f..7f37fe6aa554b948926fd4c292519b2e8af08e8b 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -532,7 +532,7 @@ libyosys.so: $(filter-out kernel/driver.o,$(OBJS))
 
 %.pyh: %.h
        $(Q) mkdir -p $(dir $@)
-       $(P) cat $< | grep -E -v "#[ ]*(include|error)" | $(LD) -x c++ -o $@ -E -P $(CPPFLAGS) $(CXXFLAGS) -Qunused-arguments -
+       $(P) cat $< | grep -E -v "#[ ]*(include|error)" | $(LD) -x c++ -o $@ -E -P -Qunused-arguments -
 
 $(PY_WRAPPER_FILE).cc: $(PY_GEN_SCRIPT).py $(PY_WRAP_INCLUDES)
        $(Q) mkdir -p $(dir $@)