mirror-chatterino2/cmake/GIT.cmake
nerix 9bfd12ba3c
Fix builds from CI showing up as modified (#4384)
This change also adds a new environment variable used while building: `CHATTERINO_REQUIRE_CLEAN_GIT` which, if set, will error out during your build's GIT stage.
This is used in CI to ensure we don't accidentally introduce a change that would result in builds showing up as "modified" again.

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>
2023-02-16 13:56:20 +00:00

93 lines
3.1 KiB
CMake

# This script will set the following variables:
# GIT_HASH
# If the git binary is found and the git work tree is intact, GIT_HASH is worked out using the `git rev-parse --short HEAD` command
# The value of GIT_HASH can be overriden by defining the GIT_HASH environment variable
# GIT_COMMIT
# If the git binary is found and the git work tree is intact, GIT_COMMIT is worked out using the `git rev-parse HEAD` command
# The value of GIT_COMMIT can be overriden by defining the GIT_COMMIT environment variable
# GIT_RELEASE
# If the git binary is found and the git work tree is intact, GIT_RELEASE is worked out using the `git describe` command
# The value of GIT_RELEASE can be overriden by defining the GIT_RELEASE environment variable
# GIT_MODIFIED
# If the git binary is found and the git work tree is intact, GIT_MODIFIED is worked out by checking if output of `git status --porcelain -z` command is empty
# The value of GIT_MODIFIED cannot be overriden
find_package(Git)
set(GIT_HASH "GIT-REPOSITORY-NOT-FOUND")
set(GIT_COMMIT "GIT-REPOSITORY-NOT-FOUND")
set(GIT_RELEASE "${PROJECT_VERSION}")
set(GIT_MODIFIED 0)
if(DEFINED ENV{CHATTERINO_SKIP_GIT_GEN})
return()
endif()
if(GIT_EXECUTABLE)
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-parse --is-inside-work-tree
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
RESULT_VARIABLE GIT_REPOSITORY_NOT_FOUND
OUTPUT_QUIET
ERROR_QUIET
)
if(GIT_REPOSITORY_NOT_FOUND)
set(GIT_REPOSITORY_FOUND 0)
else()
set(GIT_REPOSITORY_FOUND 1)
endif()
if(GIT_REPOSITORY_FOUND)
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-parse --short HEAD
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE GIT_HASH
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE GIT_COMMIT
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${GIT_EXECUTABLE} describe
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE GIT_RELEASE
OUTPUT_STRIP_TRAILING_WHITESPACE
)
execute_process(
COMMAND ${GIT_EXECUTABLE} status --porcelain -z
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE GIT_MODIFIED_OUTPUT
OUTPUT_STRIP_TRAILING_WHITESPACE
)
endif(GIT_REPOSITORY_FOUND)
endif(GIT_EXECUTABLE)
if(GIT_MODIFIED_OUTPUT)
if(DEFINED ENV{CHATTERINO_REQUIRE_CLEAN_GIT})
message(STATUS "git status --porcelain -z\n${GIT_MODIFIED_OUTPUT}")
message(FATAL_ERROR "Git repository was expected to be clean, but modifications were found!")
endif()
set(GIT_MODIFIED 1)
endif()
if(DEFINED ENV{GIT_HASH})
set(GIT_HASH "$ENV{GIT_HASH}")
endif()
if(DEFINED ENV{GIT_COMMIT})
set(GIT_COMMIT "$ENV{GIT_COMMIT}")
endif()
if(DEFINED ENV{GIT_RELEASE})
set(GIT_RELEASE "$ENV{GIT_RELEASE}")
endif()
message(STATUS "Injected git values: ${GIT_COMMIT} (${GIT_RELEASE}) modified: ${GIT_MODIFIED}")