forked from bartvdbraak/blender
593ed1347c
The original issue was that different platforms will use different hash lengths, just because defaults on Git client were different. Now we use explicit length for the hash, and length is the same as is used for short hashes in Linux -- apparently they started to have collisions with length of 11.
188 lines
6.5 KiB
CMake
188 lines
6.5 KiB
CMake
# This is called by cmake as an external process from
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# ./source/creator/CMakeLists.txt to write ./source/creator/buildinfo.h
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# Caller must define:
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# SOURCE_DIR
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# Optional overrides:
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# BUILD_DATE
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# BUILD_TIME
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# Extract working copy information for SOURCE_DIR into MY_XXX variables
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# with a default in case anything fails, for example when using git-svn
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set(MY_WC_HASH "unknown")
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set(MY_WC_BRANCH "unknown")
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set(MY_WC_COMMIT_TIMESTAMP 0)
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# Guess if this is a git working copy and then look up the revision
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if(EXISTS ${SOURCE_DIR}/.git)
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execute_process(COMMAND git rev-parse --abbrev-ref HEAD
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE MY_WC_BRANCH
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(MY_WC_BRANCH STREQUAL "HEAD")
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# Detached HEAD, check whether commit hash is reachable
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# in the master branch
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execute_process(COMMAND git rev-parse --short=12 HEAD
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE MY_WC_HASH
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND git branch --list master blender-v* --contains ${MY_WC_HASH}
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE _git_contains_check
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(NOT _git_contains_check STREQUAL "")
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set(MY_WC_BRANCH "master")
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else()
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execute_process(COMMAND git show-ref --tags -d
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE _git_tag_hashes
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND git rev-parse HEAD
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE _git_head_hash
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(_git_tag_hashes MATCHES "${_git_head_hash}")
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set(MY_WC_BRANCH "master")
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else()
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execute_process(COMMAND git branch --contains ${MY_WC_HASH}
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE _git_contains_branches
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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string(REGEX REPLACE "^\\*[ \t]+" "" _git_contains_branches "${_git_contains_branches}")
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string(REGEX REPLACE "[\r\n]+" ";" _git_contains_branches "${_git_contains_branches}")
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string(REGEX REPLACE ";[ \t]+" ";" _git_contains_branches "${_git_contains_branches}")
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foreach(_branch ${_git_contains_branches})
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if(NOT "${_branch}" MATCHES "\\(HEAD.*")
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set(MY_WC_BRANCH "${_branch}")
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break()
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endif()
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endforeach()
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unset(_branch)
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unset(_git_contains_branches)
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endif()
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unset(_git_tag_hashes)
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unset(_git_head_hashs)
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endif()
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unset(_git_contains_check)
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else()
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execute_process(COMMAND git log HEAD..@{u}
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE _git_below_check
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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if(NOT _git_below_check STREQUAL "")
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# If there're commits between HEAD and upstream this means
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# that we're reset-ed to older revision. Use it's hash then.
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execute_process(COMMAND git rev-parse --short=12 HEAD
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE MY_WC_HASH
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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else()
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execute_process(COMMAND git rev-parse --short=12 @{u}
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE MY_WC_HASH
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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if(MY_WC_HASH STREQUAL "")
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# Local branch, not set to upstream.
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# Well, let's use HEAD for now
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execute_process(COMMAND git rev-parse --short=12 HEAD
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE MY_WC_HASH
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif()
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endif()
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if(MY_WC_BRANCH MATCHES "^blender-v")
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set(MY_WC_BRANCH "master")
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endif()
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unset(_git_below_check)
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endif()
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execute_process(COMMAND git log -1 --format=%ct
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE MY_WC_COMMIT_TIMESTAMP
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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# May fail in rare cases
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if(MY_WC_COMMIT_TIMESTAMP STREQUAL "")
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set(MY_WC_COMMIT_TIMESTAMP 0)
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endif()
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# Update GIT index before getting dirty files
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execute_process(COMMAND git update-index -q --refresh
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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execute_process(COMMAND git diff-index --name-only HEAD --
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE _git_changed_files
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(NOT _git_changed_files STREQUAL "")
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set(MY_WC_BRANCH "${MY_WC_BRANCH} (modified)")
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else()
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# Unpushed commits are also considered local modifications
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execute_process(COMMAND git log @{u}..
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WORKING_DIRECTORY ${SOURCE_DIR}
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OUTPUT_VARIABLE _git_unpushed_log
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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if(NOT _git_unpushed_log STREQUAL "")
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set(MY_WC_BRANCH "${MY_WC_BRANCH} (modified)")
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endif()
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unset(_git_unpushed_log)
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endif()
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unset(_git_changed_files)
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endif()
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# BUILD_PLATFORM and BUILD_PLATFORM are taken from CMake
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# but BUILD_DATE and BUILD_TIME are platform dependent
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if(UNIX)
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if(NOT BUILD_DATE)
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execute_process(COMMAND date "+%Y-%m-%d" OUTPUT_VARIABLE BUILD_DATE OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif()
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if(NOT BUILD_TIME)
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execute_process(COMMAND date "+%H:%M:%S" OUTPUT_VARIABLE BUILD_TIME OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif()
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elseif(WIN32)
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if(NOT BUILD_DATE)
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execute_process(COMMAND cmd /c date /t OUTPUT_VARIABLE BUILD_DATE OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif()
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if(NOT BUILD_TIME)
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execute_process(COMMAND cmd /c time /t OUTPUT_VARIABLE BUILD_TIME OUTPUT_STRIP_TRAILING_WHITESPACE)
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endif()
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endif()
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# Write a file with the BUILD_HASH define
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file(WRITE buildinfo.h.txt
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"#define BUILD_HASH \"${MY_WC_HASH}\"\n"
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"#define BUILD_COMMIT_TIMESTAMP ${MY_WC_COMMIT_TIMESTAMP}\n"
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"#define BUILD_BRANCH \"${MY_WC_BRANCH}\"\n"
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"#define BUILD_DATE \"${BUILD_DATE}\"\n"
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"#define BUILD_TIME \"${BUILD_TIME}\"\n"
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)
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# cleanup
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unset(MY_WC_HASH)
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unset(MY_WC_COMMIT_TIMESTAMP)
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unset(MY_WC_BRANCH)
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unset(BUILD_DATE)
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unset(BUILD_TIME)
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# Copy the file to the final header only if the version changes
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# and avoid needless rebuilds
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# TODO: verify this comment is true, as BUILD_TIME probably changes
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
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buildinfo.h.txt buildinfo.h)
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