34b68d6eab
If this project is used as subproject of another CMake project, then git commands will fail because git will be executed from wrong location.
98 lines
3.3 KiB
CMake
98 lines
3.3 KiB
CMake
# ============================================================
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# Versioning.cmake (Reusable Version + Resource Generator)
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# ============================================================
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# Freeze the directory where this module lives
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# This is critical — it prevents paths from breaking when the
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# function is invoked from other CMakeLists.txt files.
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set(_VERSIONING_MODULE_DIR "${CMAKE_CURRENT_LIST_DIR}" CACHE INTERNAL "Versioning module directory")
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# ------------------------------------------------------------
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# Extract version information from Git
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# ------------------------------------------------------------
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# Get tag (expected: v1.2.3 or 1.2.3 or 1.2.3-12-gHASH)
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execute_process(
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COMMAND git describe --tags --dirty
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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OUTPUT_VARIABLE GIT_DESC_RAW
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# Remove leading "v" if present
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string(REGEX REPLACE "^v" "" GIT_DESC "${GIT_DESC_RAW}")
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# Extract major.minor.patch
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string(REGEX MATCH "^([0-9]+)\\.([0-9]+)\\.([0-9]+)" _ "${GIT_DESC}")
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set(PROJECT_VERSION_MAJOR "${CMAKE_MATCH_1}")
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set(PROJECT_VERSION_MINOR "${CMAKE_MATCH_2}")
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set(PROJECT_VERSION_PATCH "${CMAKE_MATCH_3}")
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set(PROJECT_VERSION_STRING
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"${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}"
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)
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# Commit hash (full + short)
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execute_process(
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COMMAND git rev-parse HEAD
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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OUTPUT_VARIABLE PROJECT_GIT_HASH
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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execute_process(
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COMMAND git rev-parse --short HEAD
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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OUTPUT_VARIABLE PROJECT_GIT_HASH_SHORT
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# Export variables to parent scope
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set(PROJECT_VERSION_MAJOR "${PROJECT_VERSION_MAJOR}" PARENT_SCOPE)
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set(PROJECT_VERSION_MINOR "${PROJECT_VERSION_MINOR}" PARENT_SCOPE)
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set(PROJECT_VERSION_PATCH "${PROJECT_VERSION_PATCH}" PARENT_SCOPE)
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set(PROJECT_VERSION_STRING "${PROJECT_VERSION_STRING}" PARENT_SCOPE)
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set(PROJECT_GIT_HASH "${PROJECT_GIT_HASH}" PARENT_SCOPE)
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set(PROJECT_GIT_HASH_SHORT "${PROJECT_GIT_HASH_SHORT}" PARENT_SCOPE)
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# Public variable for users
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set(PROJECT_AUTO_VERSION "${PROJECT_VERSION_STRING}" PARENT_SCOPE)
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# ------------------------------------------------------------
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# Reusable function: Attach Windows version resources to target
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# ------------------------------------------------------------
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function(add_windows_version_resources target)
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if(NOT WIN32)
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return()
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endif()
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if(NOT TARGET "${target}")
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message(FATAL_ERROR "add_windows_version_resources: target '${target}' not found.")
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endif()
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# Absolute path to the template (never changes)
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get_filename_component(_rc_in
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"${_VERSIONING_MODULE_DIR}/FileVersionInfo.rc.in"
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ABSOLUTE
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)
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if(NOT EXISTS "${_rc_in}")
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message(FATAL_ERROR
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"FileVersionInfo.rc.in missing at: ${_rc_in}"
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)
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endif()
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# Output in the caller's binary dir
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set(_rc_out "${CMAKE_CURRENT_BINARY_DIR}/${target}_version.rc")
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get_filename_component(_rc_out "${_rc_out}" ABSOLUTE)
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# Ensure directory exists
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file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
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# Configure the template
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configure_file("${_rc_in}" "${_rc_out}" @ONLY)
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# Add to the target
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target_sources(${target} PRIVATE "${_rc_out}")
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endfunction()
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