great make snippet.
one suggestion, this doesn't check if the files were modified from
the svn revision.
if you only compile code that is checked in this is fine, if you have
changes in the working copy this poses problems.
I have used and seen scripts that add a single letter m to the
revision number to indicate that the repository is modified.
Hardkrash
On Jan 28, 2009, at 12:10 PM, Dave Hylands wrote:
HI Vince,
...snip...
While I am at it, in the same vein, has anybody a trick to retrieve
the program revision number from subversion, so I can display that
too
along with the compilation date ?
This is really a make question and not a gcc question.
I created the following Makefile (which I called svn-version.mk), and
then in my normal Makefile (I use handcoded Makefiles), I put this:
all: svn-version.h
include ${PATH_TO_SVN_VERSION}/svn-version.mk
and make my code have
#include "svn-version.h"
My makefiles also do dependency generation, which will automatically
add the svn-version.h file as a dependent.
--
Dave Hylands
Shuswap, BC, Canada
http://www.DaveHylands.com/
###########################################################################
#
# svn-version.mk - Creates the svn-version.h file
#
###########################################################################
#--------------------------------------------------------------------------
#
# Rule to update svn-version.h file. If a C file includes this file
then
# the dependcy generator will cause this file to be generated.
#
# To prevent unnecessary updates, a temporary file is created and
compared
# to svn-version.h, so that svn-version.h is only touched if a change
# is detected.
#
svn-revision := $(subst Revision:,,$(shell svn info | grep Revision:))
ifeq ($(strip $(svn-revision)),)
svn-revision := 0
endif
svn-version.h: FORCE
@echo "Creating svn-version.h ..."
@echo "/*" > svn-version.tmp
@echo " * Generated file - Do NOT edit" >> svn-version.tmp
@echo " */" >> svn-version.tmp
@echo >> svn-version.tmp
@echo "#define SVN_REVISION $(svn-revision)" >> svn-version.tmp
@cmp --quiet svn-version.tmp svn-version.h || cp svn-version.tmp
svn-version.h
@rm svn-version.tmp
ifneq ($(wildcard svn-version.h),)
clean: clean-svn-version
clean-svn-version:
@echo "Removing svn-version.h ..."
@rm svn-version.h
endif
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