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CMakeVersion: Factor git execution into helper macro

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This commit is contained in:
Brad King 2019-07-25 08:37:11 -04:00
parent 74ff80323c
commit 2f608566b4
1 changed files with 23 additions and 24 deletions
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47
Source/CMakeVersion.cmake
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@ -4,6 +4,21 @@ set(CMake_VERSION_MINOR 15)
set(CMake_VERSION_PATCH 20190726)
#set(CMake_VERSION_RC 0)
if(EXISTS ${CMake_SOURCE_DIR}/.git)
find_package(Git QUIET)
if(GIT_FOUND)
macro(_git)
execute_process(
COMMAND ${GIT_EXECUTABLE} ${ARGN}
WORKING_DIRECTORY ${CMake_SOURCE_DIR}
RESULT_VARIABLE _git_res
OUTPUT_VARIABLE _git_out OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE _git_err ERROR_STRIP_TRAILING_WHITESPACE
)
endmacro()
endif()
endif()
# Releases define a small patch level.
if("${CMake_VERSION_PATCH}" VERSION_LESS 20000000)
set(CMake_VERSION_IS_DIRTY 0)
@ -14,30 +29,14 @@ else()
set(CMake_VERSION_IS_RELEASE 0)
# Try to identify the current development source version.
set(CMake_VERSION_SOURCE "")
if(EXISTS ${CMake_SOURCE_DIR}/.git)
find_package(Git QUIET)
if(GIT_FOUND)
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-parse --verify -q --short=4 HEAD
OUTPUT_VARIABLE head
OUTPUT_STRIP_TRAILING_WHITESPACE
WORKING_DIRECTORY ${CMake_SOURCE_DIR}
)
if(head)
set(CMake_VERSION_SOURCE "g${head}")
execute_process(
COMMAND ${GIT_EXECUTABLE} update-index -q --refresh
WORKING_DIRECTORY ${CMake_SOURCE_DIR}
)
execute_process(
COMMAND ${GIT_EXECUTABLE} diff-index --name-only HEAD --
OUTPUT_VARIABLE dirty
OUTPUT_STRIP_TRAILING_WHITESPACE
WORKING_DIRECTORY ${CMake_SOURCE_DIR}
)
if(dirty)
set(CMake_VERSION_IS_DIRTY 1)
endif()
if(COMMAND _git)
_git(rev-parse --verify -q --short=4 HEAD)
if(_git_out)
set(CMake_VERSION_SOURCE "g${_git_out}")
_git(update-index -q --refresh)
_git(diff-index --name-only HEAD --)
if(_git_out)
set(CMake_VERSION_IS_DIRTY 1)
endif()
endif()
endif()