61 lines
2.8 KiB
CMake
61 lines
2.8 KiB
CMake
function(git_version version revision version_release)
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set(${version} "" CACHE STRING "Latest Git Tag Version" FORCE)
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set(${revision} "" CACHE STRING "Latest Git Tag Revision" FORCE)
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set(${version_release} 0 CACHE STRING "Is this a versioned release without revision" FORCE)
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find_package(Git)
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if(GIT_FOUND AND EXISTS "${CMAKE_SOURCE_DIR}/.git")
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# get latest version from tag history
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execute_process(COMMAND "${GIT_EXECUTABLE}" tag "--format=%(align:width=20)%(refname:short)%(end)%(if)%(*objectname)%(then)%(*objectname)%(else)%(objectname)%(end)" --sort=-v:refname OUTPUT_VARIABLE tags OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
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# if no tags (e.g. shallow clone) do nothing
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if(tags STREQUAL "")
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return()
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endif()
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# convert to list of the form [tag0, ref0, tag1, ref1, ...]
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string(REGEX REPLACE "[ \n]+" ";" tags "${tags}")
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execute_process(COMMAND "${GIT_EXECUTABLE}" rev-parse HEAD OUTPUT_VARIABLE current_ref OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
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# if cannot get current ref, do nothing
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if(current_ref STREQUAL "")
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return()
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endif()
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list(LENGTH tags cnt)
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set(i 0)
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set(j 1)
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while(i LESS cnt AND "${${version}}" STREQUAL "")
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list(GET tags ${i} tag)
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list(GET tags ${j} ref)
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# tag is a version number with or without a "-revision"
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if(tag MATCHES "^v?(([0-9]+\\.?)*[0-9]*)(-(.*))?$")
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set(${version} "${CMAKE_MATCH_1}" CACHE STRING "Latest Git Tag Version" FORCE)
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if(i EQUAL 0)
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if(NOT "${CMAKE_MATCH_4}" STREQUAL "")
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set(${revision} "${CMAKE_MATCH_4}" CACHE STRING "Latest Git Tag Revision" FORCE)
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elseif(ref STREQUAL current_ref)
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set(${version_release} 1 CACHE STRING "Is this a versioned release without revision" FORCE)
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endif()
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endif()
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elseif(i EQUAL 0 AND ref STREQUAL current_ref)
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# revision name tagged
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set(${revision} "${tag}" CACHE STRING "Latest Git Tag Revision" FORCE)
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endif()
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math(EXPR i "${i} + 2")
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math(EXPR j "${j} + 2")
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endwhile()
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if(NOT "${${version_release}}" AND "${${revision}}" STREQUAL "")
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# dev version, use short sha for ref
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execute_process(COMMAND "${GIT_EXECUTABLE}" rev-parse --short HEAD OUTPUT_VARIABLE short_sha OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
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set(${revision} "${short_sha}" CACHE STRING "Latest Git Tag Revision" FORCE)
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endif()
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endif()
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endfunction()
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