xref: /libbtbb/cmake/modules/GetGitRevisionDescription.cmake.in (revision f94106abb3b490ade66391fdcd7f99ee891ced53)
1*f94106abSDominic Spill#
2*f94106abSDominic Spill# Internal file for GetGitRevisionDescription.cmake
3*f94106abSDominic Spill#
4*f94106abSDominic Spill# Requires CMake 2.6 or newer (uses the 'function' command)
5*f94106abSDominic Spill#
6*f94106abSDominic Spill# Original Author:
7*f94106abSDominic Spill# 2009-2010 Ryan Pavlik <[email protected]> <[email protected]>
8*f94106abSDominic Spill# http://academic.cleardefinition.com
9*f94106abSDominic Spill# Iowa State University HCI Graduate Program/VRAC
10*f94106abSDominic Spill#
11*f94106abSDominic Spill# Copyright Iowa State University 2009-2010.
12*f94106abSDominic Spill# Distributed under the Boost Software License, Version 1.0.
13*f94106abSDominic Spill# (See accompanying file LICENSE_1_0.txt or copy at
14*f94106abSDominic Spill# http://www.boost.org/LICENSE_1_0.txt)
15*f94106abSDominic Spill
16*f94106abSDominic Spillset(HEAD_HASH)
17*f94106abSDominic Spill
18*f94106abSDominic Spillfile(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024)
19*f94106abSDominic Spill
20*f94106abSDominic Spillstring(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS)
21*f94106abSDominic Spillif(HEAD_CONTENTS MATCHES "ref")
22*f94106abSDominic Spill	# named branch
23*f94106abSDominic Spill	string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}")
24*f94106abSDominic Spill	if(EXISTS "@GIT_DIR@/${HEAD_REF}")
25*f94106abSDominic Spill		configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
26*f94106abSDominic Spill	elseif(EXISTS "@GIT_DIR@/logs/${HEAD_REF}")
27*f94106abSDominic Spill		configure_file("@GIT_DIR@/logs/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
28*f94106abSDominic Spill		set(HEAD_HASH "${HEAD_REF}")
29*f94106abSDominic Spill	endif()
30*f94106abSDominic Spillelse()
31*f94106abSDominic Spill	# detached HEAD
32*f94106abSDominic Spill	configure_file("@GIT_DIR@/HEAD" "@GIT_DATA@/head-ref" COPYONLY)
33*f94106abSDominic Spillendif()
34*f94106abSDominic Spill
35*f94106abSDominic Spillif(NOT HEAD_HASH)
36*f94106abSDominic Spill	file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024)
37*f94106abSDominic Spill	string(STRIP "${HEAD_HASH}" HEAD_HASH)
38*f94106abSDominic Spill	string(SUBSTRING ${HEAD_HASH} 0 7 HEAD_HASH)
39*f94106abSDominic Spillendif()
40