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e74ce01b7f
Since 24.05 (I think) we need to pass `-c` or Clang thinks we want to compile *both* a final executable and precompiled header file, and complains that we cannot use `-o` with multiple outputs. `-c` seems fine with GCC too, so I just put it in there conditionally.
22 lines
532 B
Makefile
22 lines
532 B
Makefile
PRECOMPILE_HEADERS ?= 0
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print-var-help += \
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echo " PRECOMPILE_HEADERS ($(PRECOMPILE_HEADERS)): Whether to use precompiled headers to speed up the build";
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GCH = $(buildprefix)precompiled-headers.h.gch
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$(GCH): precompiled-headers.h
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@rm -f $@
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@mkdir -p "$(dir $@)"
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$(trace-gen) $(CXX) -c -x c++-header -o $@ $< $(GLOBAL_CXXFLAGS) $(GCH_CXXFLAGS)
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clean-files += $(GCH)
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ifeq ($(PRECOMPILE_HEADERS), 1)
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GLOBAL_CXXFLAGS_PCH += -include $(buildprefix)precompiled-headers.h -Winvalid-pch
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GLOBAL_ORDER_AFTER += $(GCH)
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endif
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