blender/build_files/cmake/buildinfo.cmake
Sergey Sharybin 28f3cc3eb7 Fixes for buildinfo hash/branch detection
Branch name and hash didn't work properly when having disconnected
HEAD or when having current HEAD below upstream.
2014-02-20 21:43:30 +06:00

132 lines
5.0 KiB
CMake

# This is called by cmake as an extermal process from
# ./source/creator/CMakeLists.txt to write ./source/creator/buildinfo.h
# Extract working copy information for SOURCE_DIR into MY_XXX variables
# with a default in case anything fails, for examble when using git-svn
set(MY_WC_HASH "unknown")
set(MY_WC_BRANCH "unknown")
set(MY_WC_COMMIT_TIMESTAMP 0)
# Guess if this is a SVN working copy and then look up the revision
if(EXISTS ${SOURCE_DIR}/.git)
# The FindGit.cmake module is part of the standard distribution
include(FindGit)
if(GIT_FOUND)
message(STATUS "-- Found Git: ${GIT_EXECUTABLE}")
execute_process(COMMAND git rev-parse --abbrev-ref HEAD
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE MY_WC_BRANCH
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(MY_WC_BRANCH STREQUAL "HEAD")
# Detached HEAD, check whether commit hash is reachable
# in the master branch
execute_process(COMMAND git rev-parse --short HEAD
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE MY_WC_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(COMMAND git branch --list master --contains ${MY_WC_HASH}
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE _git_contains_check
OUTPUT_STRIP_TRAILING_WHITESPACE)
STRING(REGEX REPLACE "^[ \t]+" "" _git_contains_check "${_git_contains_check}")
if(_git_contains_check STREQUAL "master")
set(MY_WC_BRANCH "master")
endif()
unset(_git_contains_check)
else()
execute_process(COMMAND git log HEAD..@{u}
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE _git_below_check
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT _git_below_check STREQUAL "")
# If there're commits between HEAD and upstream this means
# that we're reset-ed to older revision. Use it's hash then.
execute_process(COMMAND git rev-parse --short HEAD
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE MY_WC_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE)
else()
execute_process(COMMAND git rev-parse --short @{u}
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE MY_WC_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET)
if(MY_WC_HASH STREQUAL "")
# Local branch, not set to upstream.
# Well, let's use HEAD for now
execute_process(COMMAND git rev-parse --short HEAD
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE MY_WC_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
endif()
unset(_git_below_check)
endif()
execute_process(COMMAND git log -1 --format=%ct
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE MY_WC_COMMIT_TIMESTAMP
OUTPUT_STRIP_TRAILING_WHITESPACE)
# Update GIT index before getting dirty files
execute_process(COMMAND git update-index -q --refresh
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(COMMAND git diff-index --name-only HEAD --
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE _git_changed_files
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT _git_changed_files STREQUAL "")
set(MY_WC_BRANCH "${MY_WC_BRANCH} (modified)")
else()
# Unpushed commits are also considered local odifications
execute_process(COMMAND git log @{u}..
WORKING_DIRECTORY ${SOURCE_DIR}
OUTPUT_VARIABLE _git_unpushed_log
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET)
if(NOT _git_unpushed_log STREQUAL "")
set(MY_WC_BRANCH "${MY_WC_BRANCH} (modified)")
endif()
unset(_git_unpushed_log)
endif()
unset(_git_changed_files)
endif()
endif()
# BUILD_PLATFORM and BUILD_PLATFORM are taken from CMake
# but BUILD_DATE and BUILD_TIME are plataform dependant
if(UNIX)
execute_process(COMMAND date "+%Y-%m-%d" OUTPUT_VARIABLE BUILD_DATE OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(COMMAND date "+%H:%M:%S" OUTPUT_VARIABLE BUILD_TIME OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
if(WIN32)
execute_process(COMMAND cmd /c date /t OUTPUT_VARIABLE BUILD_DATE OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(COMMAND cmd /c time /t OUTPUT_VARIABLE BUILD_TIME OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
# Write a file with the SVNVERSION define
file(WRITE buildinfo.h.txt
"#define BUILD_HASH \"${MY_WC_HASH}\"\n"
"#define BUILD_COMMIT_TIMESTAMP ${MY_WC_COMMIT_TIMESTAMP}\n"
"#define BUILD_BRANCH \"${MY_WC_BRANCH}\"\n"
"#define BUILD_DATE \"${BUILD_DATE}\"\n"
"#define BUILD_TIME \"${BUILD_TIME}\"\n"
)
# Copy the file to the final header only if the version changes
# and avoid needless rebuilds
# TODO: verify this comment is true, as BUILD_TIME probably changes
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
buildinfo.h.txt buildinfo.h)