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https://github.com/ceph/ceph
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165f09d7e7
Found this here: https://phabricator.kde.org/D9172 Signed-off-by: Sage Weil <sage@redhat.com>
51 lines
1.5 KiB
CMake
51 lines
1.5 KiB
CMake
#
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# Internal file for GetGitRevisionDescription.cmake
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#
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# Requires CMake 2.6 or newer (uses the 'function' command)
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#
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# Original Author:
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# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
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# http://academic.cleardefinition.com
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# Iowa State University HCI Graduate Program/VRAC
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#
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# Copyright Iowa State University 2009-2010.
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or copy at
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# http://www.boost.org/LICENSE_1_0.txt)
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set(HEAD_HASH)
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file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024)
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string(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS)
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set(GIT_DIR "@GIT_DIR@")
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# handle git-worktree
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if(EXISTS "${GIT_DIR}/commondir")
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file(READ "${GIT_DIR}/commondir" GIT_DIR_NEW LIMIT 1024)
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string(STRIP "${GIT_DIR_NEW}" GIT_DIR_NEW)
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if(NOT IS_ABSOLUTE "${GIT_DIR_NEW}")
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get_filename_component(GIT_DIR_NEW ${GIT_DIR}/${GIT_DIR_NEW} ABSOLUTE)
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endif()
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if(EXISTS "${GIT_DIR_NEW}")
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set(GIT_DIR "${GIT_DIR_NEW}")
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endif()
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endif()
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if(HEAD_CONTENTS MATCHES "ref")
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# named branch
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string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}")
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if(EXISTS "${GIT_DIR}/${HEAD_REF}")
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configure_file("${GIT_DIR}/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
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elseif(EXISTS "${GIT_DIR}/logs/${HEAD_REF}")
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configure_file("${GIT_DIR}/logs/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
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set(HEAD_HASH "${HEAD_REF}")
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endif()
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else()
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# detached HEAD
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configure_file("${GIT_DIR}/HEAD" "@GIT_DATA@/head-ref" COPYONLY)
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endif()
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if(NOT HEAD_HASH)
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file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024)
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string(STRIP "${HEAD_HASH}" HEAD_HASH)
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endif()
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