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# Generates BuildVer.h with git version info.
#
# Required:
# OUTPUT_FILE - path to write BuildVer.h
if(NOT OUTPUT_FILE)
message(FATAL_ERROR "OUTPUT_FILE must be set.")
endif()
set(BUILD_NUMBER 560) # Note: Build/network has to stay static for now, as without it builds wont be able to play together. We can change it later when we have a better versioning scheme in place.
set(SUFFIX "")
# Get short SHA
execute_process(
COMMAND git rev-parse --short HEAD
OUTPUT_VARIABLE GIT_SHA
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE rc
)
if(NOT rc EQUAL 0)
set(GIT_SHA "unknown")
endif()
# Get branch name
execute_process(
COMMAND git symbolic-ref --short HEAD
OUTPUT_VARIABLE GIT_BRANCH
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE rc
)
if(NOT rc EQUAL 0)
set(GIT_BRANCH "unknown")
endif()
# Get GitHub repository from environment variable (if available) or git remote
if(DEFINED ENV{GITHUB_REPOSITORY})
set(GIT_REF "$ENV{GITHUB_REPOSITORY}/${GIT_BRANCH}")
else()
execute_process(
COMMAND git remote get-url origin
OUTPUT_VARIABLE GIT_REMOTE_URL
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE rc
)
# Handle github urls only
if(rc EQUAL 0 AND GIT_REMOTE_URL MATCHES "github\\.com[:/]([^/:]+/[^/.]+)(\\.git)?")
set(GIT_REF "${CMAKE_MATCH_1}/${GIT_BRANCH}")
else()
set(GIT_REF "UNKNOWN/${GIT_BRANCH}")
endif()
endif()
# If we have uncommitted changes, add a suffix to the version string
execute_process(
COMMAND git status --porcelain
OUTPUT_VARIABLE GIT_STATUS
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(GIT_STATUS)
set(SUFFIX "-dev")
endif()
# Write to a temp file first, only overwrite if content changed.
# This prevents unnecessary rebuilds when the version info hasn't changed.
set(_content
"#pragma once\n"
"\n"
"#define VER_PRODUCTBUILD ${BUILD_NUMBER}\n"
"#define VER_PRODUCTVERSION_STR_W L\"${GIT_SHA}${SUFFIX}\"\n"
"#define VER_FILEVERSION_STR_W VER_PRODUCTVERSION_STR_W\n"
"#define VER_BRANCHVERSION_STR_W L\"${GIT_REF}\"\n"
"#define VER_NETWORK VER_PRODUCTBUILD\n"
)
set(_tmp "${OUTPUT_FILE}.tmp")
file(WRITE "${_tmp}" ${_content})
if(EXISTS "${OUTPUT_FILE}")
execute_process(
COMMAND ${CMAKE_COMMAND} -E compare_files "${OUTPUT_FILE}" "${_tmp}"
RESULT_VARIABLE _changed
)
else()
set(_changed 1)
endif()
if(_changed)
file(RENAME "${_tmp}" "${OUTPUT_FILE}")
else()
file(REMOVE "${_tmp}")
endif()
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