mirror of
https://github.com/ZDoom/zdoom-macos-deps.git
synced 2024-12-12 13:22:01 +00:00
92 lines
2.3 KiB
CMake
92 lines
2.3 KiB
CMake
|
#!/usr/bin/cmake -P
|
||
|
|
|
||
|
|
# UpdateRevision.cmake
|
||
|
|
#
|
||
|
|
# Public domain. This program uses git commands command to get
|
||
|
|
# various bits of repository status for a particular directory
|
||
|
|
# and writes it into a header file so that it can be used for a
|
||
|
|
# project's versioning.
|
||
|
|
|
||
|
|
# Boilerplate to return a variable from a function.
|
||
|
|
macro(ret_var VAR)
|
||
|
|
set(${VAR} "${${VAR}}" PARENT_SCOPE)
|
||
|
|
endmacro()
|
||
|
|
|
||
|
|
# Populate variables "Hash", "Tag", and "Timestamp" with relevant information
|
||
|
|
# from source repository. If anything goes wrong return something in "Error."
|
||
|
|
function(query_repo_info)
|
||
|
|
execute_process(
|
||
|
|
COMMAND git describe --tags
|
||
|
|
RESULT_VARIABLE Error
|
||
|
|
OUTPUT_VARIABLE Tag
|
||
|
|
ERROR_QUIET
|
||
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE
|
||
|
|
)
|
||
|
|
if(NOT "${Error}" STREQUAL "0")
|
||
|
|
ret_var(Error)
|
||
|
|
return()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
execute_process(
|
||
|
|
COMMAND git log -1 "--format=%ai;%H"
|
||
|
|
RESULT_VARIABLE Error
|
||
|
|
OUTPUT_VARIABLE CommitInfo
|
||
|
|
ERROR_QUIET
|
||
|
|
OUTPUT_STRIP_TRAILING_WHITESPACE
|
||
|
|
)
|
||
|
|
if(NOT "${Error}" STREQUAL "0")
|
||
|
|
ret_var(Error)
|
||
|
|
return()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
list(GET CommitInfo 0 Timestamp)
|
||
|
|
list(GET CommitInfo 1 Hash)
|
||
|
|
|
||
|
|
ret_var(Tag)
|
||
|
|
ret_var(Timestamp)
|
||
|
|
ret_var(Hash)
|
||
|
|
endfunction()
|
||
|
|
|
||
|
|
# Although configure_file doesn't overwrite the file if the contents are the
|
||
|
|
# same we can't easily observe that to change the status message. This
|
||
|
|
# function parses the existing file (if it exists) and puts the hash in
|
||
|
|
# variable "OldHash"
|
||
|
|
function(get_existing_hash File)
|
||
|
|
if(EXISTS "${File}")
|
||
|
|
file(STRINGS "${File}" OldHash LIMIT_COUNT 1)
|
||
|
|
if(OldHash)
|
||
|
|
string(SUBSTRING "${OldHash}" 3 -1 OldHash)
|
||
|
|
ret_var(OldHash)
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
endfunction()
|
||
|
|
|
||
|
|
function(main)
|
||
|
|
if(NOT CMAKE_ARGC EQUAL 4) # cmake -P UpdateRevision.cmake <OutputFile>
|
||
|
|
message("Usage: ${CMAKE_ARGV2} <path to gitinfo.h>")
|
||
|
|
return()
|
||
|
|
endif()
|
||
|
|
set(OutputFile "${CMAKE_ARGV3}")
|
||
|
|
|
||
|
|
get_filename_component(ScriptDir "${CMAKE_SCRIPT_MODE_FILE}" DIRECTORY)
|
||
|
|
|
||
|
|
query_repo_info()
|
||
|
|
if(NOT Hash)
|
||
|
|
message("Failed to get commit info: ${Error}")
|
||
|
|
set(Hash "0")
|
||
|
|
set(Tag "<unknown version>")
|
||
|
|
set(Timestamp "")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
get_existing_hash("${OutputFile}")
|
||
|
|
if(Hash STREQUAL OldHash)
|
||
|
|
message("${OutputFile} is up to date at commit ${Tag}.")
|
||
|
|
return()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
configure_file("${ScriptDir}/gitinfo.h.in" "${OutputFile}")
|
||
|
|
message("${OutputFile} updated to commit ${Tag}.")
|
||
|
|
endfunction()
|
||
|
|
|
||
|
|
main()
|