fix: fix version handling in Makefile

1 files changed, 23 insertions, 14 deletions

diff --git a/Makefile b/Makefile
index 910cd50..4bfc1d8 100644
--- a/Makefile
+++ b/Makefile
@@ -4,17 +4,11 @@ PREFIX ?= /usr/local
 BINDIR ?= $(PREFIX)/bin
 DESTDIR ?=
 
-GIT_HASH := $(shell git rev-parse --short HEAD)
-GIT_DATE := $(shell git log -1 --format='%ad' --date='format:%y.%m.%d')
-GIT_BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
-GIT_REMOTE := $(shell git remote get-url origin)
-GIT_TAG := $(shell git describe --tags --exact-match HEAD 2>/dev/null)
-
-VERSION := $(if $(GIT_TAG),$(GIT_TAG),$(GIT_DATE)+$(GIT_HASH)_$(GIT_BRANCH))
-
 TARGET := bin/yapssg
 SOURCES := src/Main.c $(wildcard src/*/*.c)
 OBJECTS := $(patsubst src/%.c,obj/%.o,$(SOURCES))
+VERSION_O := obj/Version/Version.o
+VERSION_H := obj/Version/version.h
 
 CPPFLAGS += -Isrc $(shell $(PKG_CONFIG) --cflags libxml-2.0 luajit)
 CFLAGS ?= -O2 -Wall -Wextra -Werror -std=c99
@@ -27,15 +21,30 @@ all: $(TARGET)
 $(TARGET): $(OBJECTS) | bin
 	$(CC) $(LDFLAGS) $(OBJECTS) $(LDLIBS) -o $@
 
+$(VERSION_O): CPPFLAGS += -Iobj
+
+$(VERSION_O): $(VERSION_H)
+
+$(VERSION_H): FORCE
+	@mkdir -p $(@D)
+	@if v="$$(git describe --tags --exact-match HEAD 2>/dev/null)" && [ -n "$$v" ]; then \
+		:; \
+	elif h="$$(git rev-parse --short HEAD 2>/dev/null)" && [ -n "$$h" ]; then \
+		d="$$(git log -1 --format='%ad' --date='format:%y.%m.%d' 2>/dev/null)"; \
+		b="$$(git rev-parse --abbrev-ref HEAD 2>/dev/null)"; \
+		v="$${d}+$${h}_$${b}"; \
+	else \
+		if [ -f $@ ]; then exit 0; fi; \
+		v="$$(date +%y.%m.%d)+unknown"; \
+	fi; \
+	printf '#define YAPSSG_VERSION "%s"\n' "$$v" > $@.tmp; \
+	cmp -s $@ $@.tmp || mv -f $@.tmp $@; \
+	rm -f $@.tmp
+
 obj/%.o: src/%.c
 	mkdir -p $(@D)
 	$(CC) $(CPPFLAGS) $(CFLAGS) -MMD -MP -c $< -o $@
 
-obj/Version/Version.o: CPPFLAGS += -DYAPSSG_VERSION=\"$(VERSION)\"
-obj/Version/Version.o: FORCE
-
-FORCE:
-
 bin:
 	mkdir -p $@
 
@@ -45,4 +54,4 @@ clean:
 install: $(TARGET)
 	install -Dm755 $(TARGET) $(DESTDIR)$(BINDIR)/yapssg
 
--include $(OBJECTS:.o=.d)
+-include $(OBJECTS:.o=.d)
\ No newline at end of file