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Use CPPFLAGS alongside CFLAGS and CXXFLAGS during build. 

It is a convention inherited from GNU automake to use CPPFLAGS
for compiler flag intended for the preprocessor, while CFLAGS and
and CXXFLAGS provide flags intended for the C and C++ compiler.
Adjust build rules to include CPPFLAGS ensure any preprocessor
flags in build systems using this environment variable work out of
the box.

This allow Debian builds to pass on hardening flags without modifying
the build setup.

Patch from Ruben Undheim via Debian
This commit is contained in:
Petter Reinholdtsen 2026-04-23 14:52:54 +02:00
parent 8762d6c667
commit 817d542c45
1 changed files with 6 additions and 6 deletions
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12
Makefile
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@ -185,32 +185,32 @@ DEP := $(OBJ:.o=.d)
%.o: %.c
@mkdir -p $(dir $@)
@echo "$(MSG_PREFIX)\`\` Compiling:" $(LOCAL_PATH)/$<
$(VERBOSE)$(CC) -c $(OPTFLAGS) $(INCLUDES) $(CFLAGS) $< -o $@
$(VERBOSE)$(CC) -c $(OPTFLAGS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS) $< -o $@
%.o: %.cc
@mkdir -p $(dir $@)
@echo "$(MSG_PREFIX)\`\` Compiling:" $(LOCAL_PATH)/$<
$(VERBOSE)$(CXX) -c $(OPTFLAGS) $(INCLUDES) $(CXXFLAGS) $< -o $@
$(VERBOSE)$(CXX) -c $(OPTFLAGS) $(INCLUDES) $(CPPFLAGS) $(CXXFLAGS) $< -o $@
%.o: %.cpp
@mkdir -p $(dir $@)
@echo "$(MSG_PREFIX)\`\` Compiling:" $(LOCAL_PATH)/$<
$(VERBOSE)$(CXX) -c $(OPTFLAGS) $(INCLUDES) $(CXXFLAGS) $< -o $@
$(VERBOSE)$(CXX) -c $(OPTFLAGS) $(INCLUDES) $(CPPFLAGS) $(CXXFLAGS) $< -o $@
%.d: %.c
@mkdir -p $(dir $@)
@echo "$(MSG_PREFIX)\`\` Generating dependency:" $(LOCAL_PATH)/$<
$(VERBOSE)$(ABCSRC)/depends.sh "$(CC)" `dirname $*.c` $(OPTFLAGS) $(INCLUDES) $(CFLAGS) $< > $@
$(VERBOSE)$(ABCSRC)/depends.sh "$(CC)" `dirname $*.c` $(OPTFLAGS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS) $< > $@
%.d: %.cc
@mkdir -p $(dir $@)
@echo "$(MSG_PREFIX)\`\` Generating dependency:" $(LOCAL_PATH)/$<
$(VERBOSE)$(ABCSRC)/depends.sh "$(CXX)" `dirname $*.cc` $(OPTFLAGS) $(INCLUDES) $(CXXFLAGS) $< > $@
$(VERBOSE)$(ABCSRC)/depends.sh "$(CXX)" `dirname $*.cc` $(OPTFLAGS) $(INCLUDES) $(CPPFLAGS) $(CXXFLAGS) $< > $@
%.d: %.cpp
@mkdir -p $(dir $@)
@echo "$(MSG_PREFIX)\`\` Generating dependency:" $(LOCAL_PATH)/$<
$(VERBOSE)$(ABCSRC)/depends.sh "$(CXX)" `dirname $*.cpp` $(OPTFLAGS) $(INCLUDES) $(CXXFLAGS) $< > $@
$(VERBOSE)$(ABCSRC)/depends.sh "$(CXX)" `dirname $*.cpp` $(OPTFLAGS) $(INCLUDES) $(CPPFLAGS) $(CXXFLAGS) $< > $@
ifndef ABC_MAKE_NO_DEPS
-include $(DEP)