8b14bb69be
* CMake build infrastructure The squashed commit that builds and packages releases for the SIMH simulator suite with CMake, version 3.14 or newer. See README-CMake.md for documentation.
90 lines
3.5 KiB
CMake
90 lines
3.5 KiB
CMake
## git-commit-id.cmake
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##
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## Get the current Git commit hash code and commit time, update
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## .git-commit-id and .git-commit-id.h
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set(GIT_COMMIT_ID ${GIT_COMMIT_DEST}/.git-commit-id)
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set(GIT_COMMIT_ID_H ${GIT_COMMIT_DEST}/.git-commit-id.h)
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message(STATUS "Updating GIT commit ID")
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find_program(GIT_COMMAND git)
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if (GIT_COMMAND)
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execute_process(COMMAND ${GIT_COMMAND} "log" "-1" "--pretty=%H"
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WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
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RESULT_VARIABLE HAVE_GIT_COMMIT_HASH
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OUTPUT_VARIABLE SIMH_GIT_COMMIT_HASH)
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execute_process(COMMAND ${GIT_COMMAND} "log" "-1" "--pretty=%aI"
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WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
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RESULT_VARIABLE HAVE_GIT_COMMIT_TIME
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OUTPUT_VARIABLE SIMH_GIT_COMMIT_TIME)
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execute_process(COMMAND ${GIT_COMMAND} "update-index" "--refresh" "--"
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WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
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RESULT_VARIABLE HAVE_UNCOMMITTED_CHANGES
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OUTPUT_VARIABLE SIMH_UNCOMMITTED_CHANGES)
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endif ()
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if (GIT_COMMAND AND NOT (HAVE_GIT_COMMIT_HASH OR HAVE_GIT_COMMIT_TIME))
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string(STRIP ${SIMH_GIT_COMMIT_HASH} SIMH_GIT_COMMIT_HASH)
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string(STRIP ${SIMH_GIT_COMMIT_TIME} SIMH_GIT_COMMIT_TIME)
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string(REPLACE "T" " " SIMH_GIT_COMMIT_TIME ${SIMH_GIT_COMMIT_TIME})
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if (HAVE_UNCOMMITTED_CHANGES)
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message(STATUS "Git detected uncommitted changes.")
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string(APPEND SIMH_GIT_COMMIT_HASH "+uncommitted-changes")
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else ()
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message(STATUS "Clean working directory, no uncommitted changes.")
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endif ()
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message(STATUS "SIM_GIT_COMMIT_ID: ${SIMH_GIT_COMMIT_HASH}")
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message(STATUS "SIM_GIT_COMMIT_TIME: ${SIMH_GIT_COMMIT_TIME}")
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set(WRITE_GIT_COMMIT_FILES True)
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if (EXISTS ${GIT_COMMIT_ID})
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set(EXISTING_GIT_COMMIT_HASH)
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set(EXISTING_GIT_COMMIT_TIME)
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file(STRINGS ${GIT_COMMIT_ID} git_info)
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foreach (inp IN LISTS git_info)
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if (inp MATCHES "SIM_GIT_COMMIT_ID (.*)")
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set(EXISTING_GIT_COMMIT_HASH ${CMAKE_MATCH_1})
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elseif (inp MATCHES "SIM_GIT_COMMIT_TIME (.*)")
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set(EXISTING_GIT_COMMIT_TIME ${CMAKE_MATCH_1})
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endif ()
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endforeach()
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if (EXISTING_GIT_COMMIT_HASH STREQUAL SIMH_GIT_COMMIT_HASH AND
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EXISTING_GIT_COMMIT_TIME STREQUAL SIMH_GIT_COMMIT_TIME)
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message(STATUS "GIT hash and time match, not writing files.")
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set(WRITE_GIT_COMMIT_FILES False)
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endif ()
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endif ()
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if (WRITE_GIT_COMMIT_FILES)
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message(STATUS "Writing ${GIT_COMMIT_ID}")
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file(WRITE ${GIT_COMMIT_ID}
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"SIM_GIT_COMMIT_ID ${SIMH_GIT_COMMIT_HASH}\n"
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"SIM_GIT_COMMIT_TIME ${SIMH_GIT_COMMIT_TIME}\n")
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message(STATUS "Writing ${GIT_COMMIT_ID_H}")
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file(WRITE ${GIT_COMMIT_ID_H}
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"#define SIM_GIT_COMMIT_ID ${SIMH_GIT_COMMIT_HASH}\n"
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"#define SIM_GIT_COMMIT_TIME ${SIMH_GIT_COMMIT_TIME}\n")
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else ()
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message(STATUS "No changes to ${GIT_COMMIT_ID}")
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message(STATUS "No changes to ${GIT_COMMIT_ID_H}")
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endif ()
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else ()
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message(STATUS "SIM_GIT_COMMIT_ID not set.")
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message(STATUS "SIM_GIT_COMMIT_TIME not set.")
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if (NOT EXISTS ${GIT_COMMIT_ID_H})
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message(STATUS "Writing default ${GIT_COMMIT_ID_H}")
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file(WRITE ${GIT_COMMIT_ID_H}
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"#undef SIM_GIT_COMMIT_ID\n"
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"#undef SIM_GIT_COMMIT_TIME\n"
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)
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else ()
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message(STATUS "Leaving ${GIT_COMMIT_ID_H} intact")
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endif ()
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endif()
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