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Don't recompile misc.cpp on every run

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alternative to https://github.com/official-stockfish/Stockfish/pull/6660

closes https://github.com/official-stockfish/Stockfish/pull/6662

No functional change
This commit is contained in:
Disservin
2026-03-18 20:49:06 +01:00
parent 3c04b5c429
commit 415f2ef11c
2 changed files with 36 additions and 15 deletions
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.gitignore
+2
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@@ -2,6 +2,8 @@
**/*.o **/*.o
**/*.s **/*.s
src/.depend src/.depend
.build_sha.txt
.build_date.txt
# Built binary # Built binary
src/stockfish* src/stockfish*
src/Makefile
+34 -15
View File
@@ -833,19 +833,28 @@ ifeq ($(pext),yes)
endif endif
endif endif
### 3.8.1 Try to include git commit sha for versioning ### 3.8.1 Try to include git info for versioning and avoid recompiles if nothing changes
GIT_SHA := $(shell git rev-parse HEAD 2>/dev/null | cut -c 1-8) BUILD_SHA_FILE := .build_sha.txt
ifneq ($(GIT_SHA), ) BUILD_DATE_FILE := .build_date.txt
CXXFLAGS += -DGIT_SHA=$(GIT_SHA) GIT_SHA := $(shell git rev-parse HEAD 2>/dev/null | cut -c 1-8 || true)
GIT_DATE := $(shell git show -s --date=format:%Y%m%d --format=%cd HEAD 2>/dev/null || true)
COMPILER_DATE := $(shell date +%Y%m%d 2>/dev/null)
BUILD_DATE := $(if $(GIT_DATE),$(GIT_DATE),$(COMPILER_DATE))
define cache_file_contents
$(shell \
if [ ! -f "$(1)" ] || [ "$$(cat "$(1)" 2>/dev/null)" != "$(2)" ]; then \
printf '%s\n' "$(2)" > "$(1)"; \
fi)
endef
ifneq ($(filter $(MAKECMDGOALS),help strip install clean net objclean profileclean format config-sanity),$(MAKECMDGOALS))
_ := $(call cache_file_contents,$(BUILD_SHA_FILE),$(GIT_SHA))
_ := $(call cache_file_contents,$(BUILD_DATE_FILE),$(BUILD_DATE))
endif endif
### 3.8.2 Try to include git commit date for versioning ### 3.8.2 Try to include architecture
GIT_DATE := $(shell git show -s --date=format:'%Y%m%d' --format=%cd HEAD 2>/dev/null)
ifneq ($(GIT_DATE), )
CXXFLAGS += -DGIT_DATE=$(GIT_DATE)
endif
### 3.8.3 Try to include architecture
ifneq ($(ARCH), ) ifneq ($(ARCH), )
CXXFLAGS += -DARCH=$(ARCH) CXXFLAGS += -DARCH=$(ARCH)
endif endif
@@ -1035,7 +1044,7 @@ clean: objclean profileclean
# clean binaries and objects # clean binaries and objects
objclean: objclean:
@rm -f stockfish stockfish.exe *.o ./syzygy/*.o ./nnue/*.o ./nnue/features/*.o @rm -f stockfish stockfish.exe *.o ./syzygy/*.o ./nnue/*.o ./nnue/features/*.o $(BUILD_SHA_FILE) $(BUILD_DATE_FILE)
# clean auxiliary profiling files # clean auxiliary profiling files
profileclean: profileclean:
@@ -1131,9 +1140,19 @@ config-sanity: net
$(EXE): $(OBJS) $(EXE): $(OBJS)
+$(CXX) -o $@ $(OBJS) $(LDFLAGS) +$(CXX) -o $@ $(OBJS) $(LDFLAGS)
# Force recompilation to ensure version info is up-to-date %.o: %.cpp
misc.o: FORCE $(strip $(CXX) $(CPPFLAGS) $(CXXFLAGS)) -c -o $@ $<
FORCE:
# Cache git metadata when available, otherwise cache the compiler date.
misc.o: misc.cpp $(BUILD_SHA_FILE) $(BUILD_DATE_FILE)
@sha="$$(cat $(BUILD_SHA_FILE))"; \
set -- $(CXX) $(CPPFLAGS) $(CXXFLAGS); \
test -n "$$sha" && set -- "$$@" -DGIT_SHA=$$sha; \
test -n "$(GIT_DATE)" && set -- "$$@" -DGIT_DATE=$(GIT_DATE); \
set -- "$$@" -c $< -o $@; \
printf '%s ' "$$@"; \
printf '\n'; \
"$$@"
clang-profile-make: clang-profile-make:
$(MAKE) ARCH=$(ARCH) COMP=$(COMP) \ $(MAKE) ARCH=$(ARCH) COMP=$(COMP) \