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97a6e27d56
cmake/BuildInfo.cmake runs on every build and rewrites the generated BuildInfo.cpp only when something changed, so a new commit recompiles one file and relinks. The build kind comes from DLU_BUILD_KIND (release/ci/local) or CI=true, defaulting to local. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
72 lines
2.6 KiB
CMake
72 lines
2.6 KiB
CMake
# Writes BuildInfo.cpp (the data behind dCommon/BuildInfo.h) at build time.
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# Run as a script:
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# cmake -DSOURCE_DIR=... -DTEMPLATE=... -DOUTPUT=... -DVERSION_MAJOR=... -DVERSION_MINOR=... -DVERSION_PATCH=... -P BuildInfo.cmake
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# The output is only rewritten when its contents change, so an unchanged tree recompiles nothing.
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#
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# Build kind comes from the environment of the build: DLU_BUILD_KIND=release|ci|local wins, otherwise CI=true
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# (set by GitHub Actions and most CI systems) means ci, otherwise local.
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find_package(Git QUIET)
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set(BUILD_COMMIT "")
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set(BUILD_BRANCH "")
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set(BUILD_DIRTY "false")
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if(GIT_FOUND)
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execute_process(COMMAND "${GIT_EXECUTABLE}" -C "${SOURCE_DIR}" rev-parse HEAD
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OUTPUT_VARIABLE BUILD_COMMIT OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET RESULT_VARIABLE result)
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if(NOT result EQUAL 0)
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set(BUILD_COMMIT "")
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endif()
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endif()
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if(BUILD_COMMIT)
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execute_process(COMMAND "${GIT_EXECUTABLE}" -C "${SOURCE_DIR}" rev-parse --abbrev-ref HEAD
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OUTPUT_VARIABLE BUILD_BRANCH OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
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if(BUILD_BRANCH STREQUAL "HEAD")
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# Detached HEAD (CI checkouts): use the branch the CI names, if any.
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if(NOT "$ENV{GITHUB_HEAD_REF}" STREQUAL "")
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set(BUILD_BRANCH "$ENV{GITHUB_HEAD_REF}")
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else()
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set(BUILD_BRANCH "$ENV{GITHUB_REF_NAME}")
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endif()
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endif()
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execute_process(COMMAND "${GIT_EXECUTABLE}" -C "${SOURCE_DIR}" update-index -q --refresh OUTPUT_QUIET ERROR_QUIET)
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execute_process(COMMAND "${GIT_EXECUTABLE}" -C "${SOURCE_DIR}" diff-index --quiet HEAD --
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RESULT_VARIABLE result OUTPUT_QUIET ERROR_QUIET)
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if(NOT result EQUAL 0)
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set(BUILD_DIRTY "true")
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endif()
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endif()
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string(TOLOWER "$ENV{DLU_BUILD_KIND}" kind)
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string(TOLOWER "$ENV{CI}" ci)
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if(kind STREQUAL "release")
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set(BUILD_KIND "RELEASE")
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elseif(kind STREQUAL "ci" OR (kind STREQUAL "" AND (ci STREQUAL "true" OR ci STREQUAL "1")))
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set(BUILD_KIND "CI")
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else()
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set(BUILD_KIND "LOCAL")
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endif()
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# Readable identifier, e.g. 3.0.0-experimental+g1a2b3c4d-dirty. Release builds leave out the branch.
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set(BUILD_STRING "${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
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if(BUILD_BRANCH AND NOT BUILD_KIND STREQUAL "RELEASE")
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string(REGEX REPLACE ".*/" "" branchName "${BUILD_BRANCH}")
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string(REGEX REPLACE "[^0-9A-Za-z.-]" "-" branchName "${branchName}")
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string(APPEND BUILD_STRING "-${branchName}")
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endif()
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if(BUILD_COMMIT)
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string(SUBSTRING "${BUILD_COMMIT}" 0 8 shortCommit)
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string(APPEND BUILD_STRING "+g${shortCommit}")
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if(BUILD_DIRTY)
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string(APPEND BUILD_STRING "-dirty")
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endif()
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endif()
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# Git allows " in branch names; keep the C++ string literal valid.
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string(REPLACE "\"" "\\\"" BUILD_BRANCH "${BUILD_BRANCH}")
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configure_file("${TEMPLATE}" "${OUTPUT}" @ONLY)
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