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Use precompiled headers to shave off ~15% compile time for models. #582

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merged 1 commit into from Nov 3, 2017
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Use precompiled headers to shave off ~15% compile time for models. #582

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11 changes: 7 additions & 4 deletions make/models
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Expand Up @@ -2,22 +2,25 @@
# Models (to be passed through stanc)
##
MODEL_HEADER := $(STAN)src/stan/model/model_header.hpp
MODEL_PCH := $(MODEL_HEADER:.hpp=.hpp.gch)
CMDSTAN_MAIN := src/cmdstan/main.cpp

$(MODEL_PCH) : $(MODEL_HEADER)
@echo 'Compiling pre-compiled header'
$(COMPILE.cc) -O$O $(MODEL_HEADER) -o $@

.PRECIOUS: %.hpp %.o
$(patsubst %.stan,%,$(wildcard $(addsuffix .stan,$(MAKECMDGOALS)))) : %$(EXE) : %.hpp %.stan bin/stanc$(EXE) bin/stansummary$(EXE) bin/diagnose$(EXE) $(LIBCVODES)
$(patsubst %.stan,%,$(wildcard $(addsuffix .stan,$(MAKECMDGOALS)))) : %$(EXE) : %.hpp %.stan bin/stanc$(EXE) bin/stansummary$(EXE) bin/diagnose$(EXE) $(LIBCVODES) $(MODEL_PCH)
@echo ''
@echo '--- Linking C++ model ---'
ifneq (,$(findstring allow_undefined,$(STANCFLAGS)))
$(LINK.cc) -O$O $(OUTPUT_OPTION) $(CMDSTAN_MAIN) -include $< -include $(USER_HEADER) $(LIBCVODES)
$(LINK.cc) -include-pch $(MODEL_PCH) -O$O $(OUTPUT_OPTION) $(CMDSTAN_MAIN) -include $< -include $(USER_HEADER) $(LIBCVODES)
else
$(LINK.cc) -O$O $(OUTPUT_OPTION) $(CMDSTAN_MAIN) -include $< $(LIBCVODES)
$(LINK.cc) -include-pch $(MODEL_PCH) -O$O $(OUTPUT_OPTION) $(CMDSTAN_MAIN) -include $< $(LIBCVODES)
endif

.PRECIOUS: %.hpp
%.hpp : %.stan $(MODEL_HEADER) bin/stanc$(EXE)
@echo ''
@echo '--- Translating Stan model to C++ code ---'
$(WINE) bin$(PATH_SEPARATOR)stanc$(EXE) $(STANCFLAGS) $< --o=$@

1 change: 1 addition & 0 deletions makefile
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Expand Up @@ -249,6 +249,7 @@ clean-manual:

clean-all: clean clean-libraries
$(RM) -r bin
$(RM) $(STAN)src/stan/model/model_header.hpp.gch

##
# Submodule related tasks
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