3d59c44f7a
Now --version prints something like "This is FreeRDP version 1.0.1 (git 1.0.1-710-g90ec2)". Having a git commit id helps to identify builds and eases debuggin. The downside is that GetGitRevisionDescription retriggers a cmake re-configuration after each git commit. But thats the only way to get correct version informations without having git hooks or similar. GetGitRevisionDescription is based on Ryan Pavlik cmake Modules.
107 lines
3.3 KiB
CMake
107 lines
3.3 KiB
CMake
# - 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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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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# 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 ${CMAKE_CURRENT_LIST_FILE} PATH)
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function(get_git_head_revision _refspecvar _hashvar)
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set(GIT_PARENT_DIR "${CMAKE_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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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 "${GIT_DATA}")
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endif()
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if(NOT EXISTS "${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" "${HEAD_FILE}" COPYONLY)
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configure_file("${_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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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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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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if(NOT GIT_FOUND)
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set(${_var} "n/a" PARENT_SCOPE)
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return()
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endif()
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get_git_head_revision(refspec hash)
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if(NOT hash)
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set(${_var} "n/a" PARENT_SCOPE)
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return()
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endif()
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execute_process(COMMAND "${GIT_EXECUTABLE}" describe ${hash} ${ARGN}
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WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
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RESULT_VARIABLE res
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OUTPUT_VARIABLE 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 "n/a")
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endif()
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set(${_var} "${out}" PARENT_SCOPE)
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endfunction()
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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()
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