Use a different strategy for generating version tags

Makefile

@@ -148,10 +148,14 @@ BUNDLE_OBJS=$(BUNDLE_SRCS:%.c=%.o)
 OBJDIRS+= $(sort $(dir $(BUNDLE_OBJS)))
 .PRECIOUS: ${BUNDLE_SRCS}
 
+VERSION=$(shell support/version.sh)
+CURVERSION=$(shell cat ${BUILDDIR}/ver || echo "0")
+
 # Common CFLAGS for all files
 CFLAGS_com  = -g -funsigned-char -O2 
 CFLAGS_com += -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 CFLAGS_com += -I${BUILDDIR} -I${CURDIR}/src -I${CURDIR}
+CFLAGS_com += -DHTS_VERSION=\"$(VERSION)\"
 
 all: ${PROG}
 
@@ -174,17 +178,19 @@ ${BUILDDIR}/%.so: ${SRCS_EXTRA}
 	${CC} -O -fbuiltin -fomit-frame-pointer -fPIC -shared -o $@ $< -ldl
 
 clean:
-	rm -rf ${BUILDDIR}/src ${BUILDDIR}/bundles
+	rm -rf ${BUILDDIR}/src ${BUILDDIR}/bundles ${BUILDDIR}/ver
 	find . -name "*~" | xargs rm -f
 
 distclean: clean
 	rm -rf build.*
 
-# Create tvheadendversion.h
-$(BUILDDIR)/tvheadendversion.h:
-	$(CURDIR)/support/version.sh $(CURDIR) $(BUILDDIR)/tvheadendversion.h
+ifneq ($(VERSION), $(CURVERSION))
+.PHONY:	src/version.c
+$(info Version changed)
+src/version.c:
+	echo $(VERSION) >${BUILDDIR}/ver
+endif
 
-src/version.c: $(BUILDDIR)/tvheadendversion.h
 
 # Include dependency files if they exist.
 -include $(DEPS) $(BUNDLE_DEPS)

src/version.c

@@ -1,4 +1,3 @@
-#include "tvheadendversion.h"
 #include "config.h"
 
 #ifdef HTS_RELEASE_TAG

support/version.sh

@@ -20,10 +20,4 @@ fi
 # no version number found
 test $revision || revision=UNKNOWN
 
-NEW_REVISION="#define HTS_VERSION \"$revision\""
-OLD_REVISION=`cat version.h 2> /dev/null`
-
-# Update version.h only on revision changes to avoid spurious rebuilds
-if test "$NEW_REVISION" != "$OLD_REVISION"; then
-    echo "$NEW_REVISION" > "$2"
-fi
+echo $revision