diff options
Diffstat (limited to 'cmake/modules/GetGitRevisionDescription.cmake.in')
| -rw-r--r-- | cmake/modules/GetGitRevisionDescription.cmake.in | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/cmake/modules/GetGitRevisionDescription.cmake.in b/cmake/modules/GetGitRevisionDescription.cmake.in new file mode 100644 index 000000000..41cf7ed5f --- /dev/null +++ b/cmake/modules/GetGitRevisionDescription.cmake.in @@ -0,0 +1,50 @@ +# +# Internal file for GetGitRevisionDescription.cmake +# +# Requires CMake 2.6 or newer (uses the 'function' command) +# +# Original Author: +# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net> +# http://academic.cleardefinition.com +# Iowa State University HCI Graduate Program/VRAC +# +# Copyright Iowa State University 2009-2010. +# Distributed under the Boost Software License, Version 1.0. +# (See accompanying file LICENSE_1_0.txt or copy at +# http://www.boost.org/LICENSE_1_0.txt) + +set(HEAD_HASH) + +file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024) + +string(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS) +set(GIT_DIR "@GIT_DIR@") +# handle git-worktree +if(EXISTS "${GIT_DIR}/commondir") + file(READ "${GIT_DIR}/commondir" GIT_DIR_NEW LIMIT 1024) + string(STRIP "${GIT_DIR_NEW}" GIT_DIR_NEW) + if(NOT IS_ABSOLUTE "${GIT_DIR_NEW}") + get_filename_component(GIT_DIR_NEW ${GIT_DIR}/${GIT_DIR_NEW} ABSOLUTE) + endif() + if(EXISTS "${GIT_DIR_NEW}") + set(GIT_DIR "${GIT_DIR_NEW}") + endif() +endif() +if(HEAD_CONTENTS MATCHES "ref") + # named branch + string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}") + if(EXISTS "${GIT_DIR}/${HEAD_REF}") + configure_file("${GIT_DIR}/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY) + elseif(EXISTS "${GIT_DIR}/logs/${HEAD_REF}") + configure_file("${GIT_DIR}/logs/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY) + set(HEAD_HASH "${HEAD_REF}") + endif() +else() + # detached HEAD + configure_file("${GIT_DIR}/HEAD" "@GIT_DATA@/head-ref" COPYONLY) +endif() + +if(NOT HEAD_HASH) + file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024) + string(STRIP "${HEAD_HASH}" HEAD_HASH) +endif() |