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cmake: generate git hash using GetRevisionDescription CMake module

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This allows the build system (ninja/make/VS) to detect whether the current
checkout git commit has changed. If so, SDL_revision.h will be updated.
This commit is contained in:
Anonymous Maarten
2022-10-20 18:47:17 +02:00
committed by Anonymous Maarten
parent d4f7b0aa0e
commit f53d797cca
6 changed files with 343 additions and 32 deletions
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45
CMakeLists.txt
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@@ -1,5 +1,5 @@
if(${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_BINARY_DIR})
message(FATAL_ERROR "Prevented in-tree build. Please create a build directory outside of the SDL source code and run \"cmake -S ${CMAKE_SOURCE_DIR} -B .\" from there")
message(FATAL_ERROR "Prevented in-tree build. Please create a build directory outside of the SDL source code and run \"cmake -S ${CMAKE_SOURCE_DIR} -B .\" from there")
endif()
cmake_minimum_required(VERSION 3.0.0)
@@ -74,6 +74,7 @@ include(${SDL3_SOURCE_DIR}/cmake/macros.cmake)
include(${SDL3_SOURCE_DIR}/cmake/sdlchecks.cmake)
include(${SDL3_SOURCE_DIR}/cmake/sdlplatform.cmake)
include(${SDL3_SOURCE_DIR}/cmake/CheckCPUArchitecture.cmake)
include(${SDL3_SOURCE_DIR}/cmake/GetGitRevisionDescription.cmake)
# Enable large file support on 32-bit glibc, so that we can access files
# with large inode numbers
@@ -2843,39 +2844,19 @@ foreach(_hdr IN LISTS SDL3_INCLUDE_FILES)
endif()
endforeach()
# Compat helpers for the configuration files
if(EXISTS "${PROJECT_SOURCE_DIR}/VERSION.txt")
file(READ "${PROJECT_SOURCE_DIR}/VERSION.txt" SDL_SOURCE_VERSION)
string(STRIP "${SDL_SOURCE_VERSION}" SDL_SOURCE_VERSION)
endif()
find_package(Git)
if(Git_FOUND)
execute_process(COMMAND
"${GIT_EXECUTABLE}" describe --always --tags --long
WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
RESULT_VARIABLE GIT_REVISION_STATUS
OUTPUT_VARIABLE GIT_REVISION
ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
set(SDL_REVISION_SUFFIX "" CACHE STRING "Suffix for the SDL revision")
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/VERSION.txt")
# If VERSION exists, it contains the SDL version
file(READ "${CMAKE_CURRENT_SOURCE_DIR}/VERSION.txt" SDL_REVISION_CENTER)
string(STRIP "${SDL_REVISION_CENTER}" SDL_REVISION_CENTER)
else()
set(GIT_REVISION_STATUS 1)
set(GIT_REVISION "")
endif()
if(SDL_SOURCE_VERSION)
set(SDL_REVISION "SDL-${SDL_SOURCE_VERSION}")
elseif(GIT_REVISION_STATUS EQUAL 0)
if(GIT_REVISION MATCHES "^[0-9a-f]+$")
# Just a truncated sha1, so prefix it with the version number
set(SDL_REVISION "SDL-${SDL_VERSION}-g${GIT_REVISION}")
else()
# e.g. release-2.24.0-542-g96361fc47
set(SDL_REVISION "SDL-${GIT_REVISION}")
# If VERSION does not exist, use git to calculate a version
git_describe(SDL_REVISION_CENTER)
if(NOT SDL_REVISION_CENTER)
set(SDL_REVISION_CENTER "${SDL_VERSION}-no-vcs")
endif()
else()
set(SDL_REVISION "SDL-${SDL_VERSION}-no-vcs")
endif()
set(SDL_REVISION "SDL-${SDL_REVISION_CENTER}${SDL_REVISION_SUFFIX}")
execute_process(COMMAND "${CMAKE_COMMAND}" -E make_directory "${SDL3_BINARY_DIR}/include/SDL3")
configure_file("${SDL3_SOURCE_DIR}/include/build_config/SDL_revision.h.cmake"
@@ -2888,6 +2869,8 @@ else()
set(sdl_static_libname "SDL3")
endif()
# Clean up variables for sdl3.pc
if(SDL_SHARED)
set(PKGCONFIG_LIBS_PRIV "\nLibs.private:")
else()