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|
# - Returns a version string from Git
#
# These functions force a re-configure on each git commit so that you can
# trust the values of the variables in your build system.
#
# get_git_head_revision(<refvar> <hashvar> [<additional arguments to git describe> ...])
#
# Returns the ref and sha hash of the current head revision
#
# git_describe(<var> [<additional arguments to git describe> ...])
#
# Returns the results of git describe on the source tree, and adjusting
# the output so that it tests false if an error occurs.
#
# git_get_exact_tag(<var> [<additional arguments to git describe> ...])
#
# Returns the results of git describe --exact-match on the source tree,
# and adjusting the output so that it tests false if there was no exact
# matching tag.
#
# Requires CMake 2.6 or newer (uses the 'function' command)
#
# Original Author:
# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
# http://academic.cleardefinition.com
# Iowa State University HCI Graduate Program/VRAC
#
# Copyright Iowa State University 2009-2010.
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at
# https://www.boost.org/LICENSE_1_0.txt)
if(__get_git_revision_description)
return()
endif()
set(__get_git_revision_description YES)
# We must run the following at "include" time, not at function call time,
# to find the path to this module rather than the path to a calling list file
get_filename_component(_gitdescmoddir ${CMAKE_CURRENT_LIST_FILE} PATH)
find_package(Git QUIET)
function(get_git_head_revision _refvar _hashvar)
if(NOT GIT_EXECUTABLE)
set(${_refvar}
"GIT-NOTFOUND"
PARENT_SCOPE)
set(${_hashvar}
"GIT-NOTFOUND"
PARENT_SCOPE)
return()
endif()
set(src_dir ${PROJECT_SOURCE_DIR})
set(bin_dir ${PROJECT_BINARY_DIR})
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-parse --git-dir
WORKING_DIRECTORY ${src_dir}
OUTPUT_VARIABLE GIT_DIR
ERROR_VARIABLE error
RESULT_VARIABLE failed
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT IS_ABSOLUTE "${GIT_DIR}")
set(GIT_DIR "${src_dir}/${GIT_DIR}")
endif()
if(failed OR NOT EXISTS "${GIT_DIR}/HEAD")
# not in git
set(${_refvar}
"GITDIR-NOTFOUND"
PARENT_SCOPE)
set(${_hashvar}
"GITDIR-NOTFOUND"
PARENT_SCOPE)
return()
endif()
set(GIT_DATA "${bin_dir}/CMakeFiles/git-data")
if(NOT EXISTS "${GIT_DATA}")
file(MAKE_DIRECTORY "${GIT_DATA}")
endif()
configure_file("${GIT_DIR}/HEAD" "${GIT_DATA}/HEAD" COPYONLY)
file(
STRINGS "${GIT_DIR}/HEAD" head
LIMIT_COUNT 1
LIMIT_INPUT 1024)
if("${head}" MATCHES "^ref: (.*)$")
set(HEAD_REF "${CMAKE_MATCH_1}")
if(EXISTS "${GIT_DIR}/${HEAD_REF}")
configure_file("${GIT_DIR}/${HEAD_REF}" "${GIT_DATA}/HEAD-REF" COPYONLY)
endif()
else()
set(HEAD_REF "")
endif()
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
WORKING_DIRECTORY ${src_dir}
OUTPUT_VARIABLE HEAD_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE error
RESULT_VARIABLE failed)
if(failed)
set(HEAD_HASH "HEAD-HASH-NOTFOUND")
endif()
set(${_refvar}
"${HEAD_REF}"
PARENT_SCOPE)
set(${_hashvar}
"${HEAD_HASH}"
PARENT_SCOPE)
endfunction()
# get the number of commits since the file has last been modified
function(git_commits_since file _commits)
get_git_head_revision(ref head)
set(src_dir ${PROJECT_SOURCE_DIR})
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-list ${head} -n 1 -- ${file}
WORKING_DIRECTORY ${src_dir}
OUTPUT_VARIABLE tag
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE error
RESULT_VARIABLE failed)
if(failed)
set(tag "")
endif()
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-list ${tag}..${head}
WORKING_DIRECTORY ${src_dir}
OUTPUT_VARIABLE rev_list
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_VARIABLE error
RESULT_VARIABLE failed)
if(failed)
set(rev_list "")
endif()
string(
REGEX MATCHALL
"[a-fA-F0-9]+"
rev_list
"${rev_list}")
list(LENGTH rev_list COUNT)
set(${_commits}
"${COUNT}"
PARENT_SCOPE)
endfunction()
function(git_describe _var)
get_git_head_revision(refspec hash)
if(NOT GIT_FOUND)
set(${_var}
"GIT-NOTFOUND"
PARENT_SCOPE)
return()
endif()
if(NOT hash)
set(${_var}
"HEAD-HASH-NOTFOUND"
PARENT_SCOPE)
return()
endif()
set(src_dir ${PROJECT_SOURCE_DIR})
# TODO sanitize
#if((${ARGN}" MATCHES "&&") OR
# (ARGN MATCHES "||") OR
# (ARGN MATCHES "\\;"))
# message("Please report the following error to the project!")
# message(FATAL_ERROR "Looks like someone's doing something nefarious with git_describe! Passed arguments ${ARGN}")
#endif()
#message(STATUS "Arguments to execute_process: ${ARGN}")
execute_process(
COMMAND "${GIT_EXECUTABLE}" describe ${hash} ${ARGN}
WORKING_DIRECTORY "${src_dir}"
RESULT_VARIABLE res
OUTPUT_VARIABLE out
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT
res
EQUAL
0)
set(out "${out}-${res}-NOTFOUND")
endif()
set(${_var}
"${out}"
PARENT_SCOPE)
endfunction()
function(git_get_exact_tag _var)
git_describe(out --exact-match ${ARGN})
set(${_var}
"${out}"
PARENT_SCOPE)
endfunction()
function(git_head_date _var)
get_git_head_revision(refspec hash)
if(NOT GIT_FOUND)
set(${_var}
"GIT-NOTFOUND"
PARENT_SCOPE)
return()
endif()
if(NOT hash)
set(${_var}
"HEAD-HASH-NOTFOUND"
PARENT_SCOPE)
return()
endif()
set(src_dir ${PROJECT_SOURCE_DIR})
execute_process(
COMMAND "${GIT_EXECUTABLE}" show -s --format=%ci ${hash} ${ARGN}
WORKING_DIRECTORY "${src_dir}"
RESULT_VARIABLE res
OUTPUT_VARIABLE out
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT
res
EQUAL
0)
set(out "${out}-${res}-NOTFOUND")
endif()
set(${_var}
"${out}"
PARENT_SCOPE)
endfunction()
function(git_head_date _var)
get_git_head_revision(refspec hash)
if(NOT GIT_FOUND)
set(${_var}
"GIT-NOTFOUND"
PARENT_SCOPE)
return()
endif()
if(NOT hash)
set(${_var}
"HEAD-HASH-NOTFOUND"
PARENT_SCOPE)
return()
endif()
set(src_dir ${PROJECT_SOURCE_DIR})
execute_process(
COMMAND "${GIT_EXECUTABLE}" show -s --format=%ci ${hash} ${ARGN}
WORKING_DIRECTORY "${src_dir}"
RESULT_VARIABLE res
OUTPUT_VARIABLE out
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT
res
EQUAL
0)
set(out "${out}-${res}-NOTFOUND")
endif()
set(${_var}
"${out}"
PARENT_SCOPE)
endfunction()
function(git_head_localmods _var)
get_git_head_revision(refspec hash)
if(NOT GIT_FOUND)
set(${_var}
"GIT-NOTFOUND"
PARENT_SCOPE)
return()
endif()
if(NOT hash)
set(${_var}
"HEAD-HASH-NOTFOUND"
PARENT_SCOPE)
return()
endif()
set(src_dir ${PROJECT_SOURCE_DIR})
## Determine if there are local modifications to the HEAD
execute_process(
COMMAND ${GIT_EXECUTABLE} diff --shortstat HEAD
WORKING_DIRECTORY ${src_dir}
RESULT_VARIABLE res
OUTPUT_VARIABLE out
ERROR_VARIABLE error
OUTPUT_STRIP_TRAILING_WHITESPACE)
if(NOT
res
EQUAL
0)
set(out "${out}-${res}-NOTFOUND")
endif()
set(${_var}
"${out}"
PARENT_SCOPE)
endfunction()
|
