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# - Returns a version string from Git |
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# |
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# These functions force a re-configure on each git commit so that you can |
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# trust the values of the variables in your build system. |
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# |
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# get_git_head_revision(<refspecvar> <hashvar> [<additional arguments to git describe> ...]) |
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# |
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# Returns the refspec and sha hash of the current head revision |
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# |
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# git_describe(<var> [<additional arguments to git describe> ...]) |
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# |
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# Returns the results of git describe on the source tree, and adjusting |
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# the output so that it tests false if an error occurs. |
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# |
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# git_get_exact_tag(<var> [<additional arguments to git describe> ...]) |
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# |
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# Returns the results of git describe --exact-match on the source tree, |
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# and adjusting the output so that it tests false if there was no exact |
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# matching tag. |
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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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|
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if(__get_git_revision_description) |
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return() |
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endif() |
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set(__get_git_revision_description YES) |
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|
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# We must run the following at "include" time, not at function call time, |
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# to find the path to this module rather than the path to a calling list file |
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get_filename_component(_gitdescmoddir ${CMAKE_CURRENT_LIST_FILE} PATH) |
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|
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function(get_git_head_revision _refspecvar _hashvar) |
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set(GIT_PARENT_DIR "${CMAKE_CURRENT_SOURCE_DIR}") |
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set(GIT_DIR "${GIT_PARENT_DIR}/.git") |
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while(NOT EXISTS "${GIT_DIR}") # .git dir not found, search parent directories |
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set(GIT_PREVIOUS_PARENT "${GIT_PARENT_DIR}") |
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get_filename_component(GIT_PARENT_DIR ${GIT_PARENT_DIR} PATH) |
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if(GIT_PARENT_DIR STREQUAL GIT_PREVIOUS_PARENT) |
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# We have reached the root directory, we are not in git |
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set(${_refspecvar} "GITDIR-NOTFOUND" PARENT_SCOPE) |
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set(${_hashvar} "GITDIR-NOTFOUND" PARENT_SCOPE) |
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return() |
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endif() |
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set(GIT_DIR "${GIT_PARENT_DIR}/.git") |
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endwhile() |
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# check if this is a submodule |
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if(NOT IS_DIRECTORY ${GIT_DIR}) |
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file(READ ${GIT_DIR} submodule) |
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string(REGEX REPLACE "gitdir: (.*)\n$" "\\1" GIT_DIR_RELATIVE ${submodule}) |
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get_filename_component(SUBMODULE_DIR ${GIT_DIR} PATH) |
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get_filename_component(GIT_DIR ${SUBMODULE_DIR}/${GIT_DIR_RELATIVE} ABSOLUTE) |
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endif() |
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set(GIT_DATA "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/git-data") |
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if(NOT EXISTS "${GIT_DATA}") |
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file(MAKE_DIRECTORY "${GIT_DATA}") |
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endif() |
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|
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if(NOT EXISTS "${GIT_DIR}/HEAD") |
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return() |
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endif() |
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set(HEAD_FILE "${GIT_DATA}/HEAD") |
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configure_file("${GIT_DIR}/HEAD" "${HEAD_FILE}" COPYONLY) |
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|
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configure_file("${_gitdescmoddir}/GetGitRevisionDescription.cmake.in" |
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"${GIT_DATA}/grabRef.cmake" |
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@ONLY) |
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include("${GIT_DATA}/grabRef.cmake") |
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|
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set(${_refspecvar} "${HEAD_REF}" PARENT_SCOPE) |
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set(${_hashvar} "${HEAD_HASH}" PARENT_SCOPE) |
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endfunction() |
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|
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function(git_describe _var) |
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if(NOT GIT_FOUND) |
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find_package(Git QUIET) |
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endif() |
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get_git_head_revision(refspec hash) |
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if(NOT GIT_FOUND) |
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set(${_var} "GIT-NOTFOUND" PARENT_SCOPE) |
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return() |
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endif() |
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if(NOT hash) |
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set(${_var} "HEAD-HASH-NOTFOUND" PARENT_SCOPE) |
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return() |
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endif() |
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|
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# TODO sanitize |
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#if((${ARGN}" MATCHES "&&") OR |
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# (ARGN MATCHES "||") OR |
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# (ARGN MATCHES "\\;")) |
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# message("Please report the following error to the project!") |
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# message(FATAL_ERROR "Looks like someone's doing something nefarious with git_describe! Passed arguments ${ARGN}") |
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#endif() |
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|
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#message(STATUS "Arguments to execute_process: ${ARGN}") |
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|
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execute_process(COMMAND |
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"${GIT_EXECUTABLE}" |
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describe |
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${hash} |
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${ARGN} |
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WORKING_DIRECTORY |
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"${CMAKE_SOURCE_DIR}" |
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RESULT_VARIABLE |
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res |
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OUTPUT_VARIABLE |
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out |
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ERROR_QUIET |
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OUTPUT_STRIP_TRAILING_WHITESPACE) |
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if(NOT res EQUAL 0) |
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set(out "${out}-${res}-NOTFOUND") |
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endif() |
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|
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set(${_var} "${out}" PARENT_SCOPE) |
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endfunction() |
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|
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function(git_get_exact_tag _var) |
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git_describe(out --exact-match ${ARGN}) |
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set(${_var} "${out}" PARENT_SCOPE) |
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endfunction() |
