90 lines
2.7 KiB
CMake
90 lines
2.7 KiB
CMake
set(TEMPLATE_FILE "${CMAKE_CURRENT_SOURCE_DIR}/scripts/build-info.h.in")
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set(HEADER_FILE "${CMAKE_CURRENT_SOURCE_DIR}/build-info.h")
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set(BUILD_NUMBER 0)
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set(BUILD_COMMIT "unknown")
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set(BUILD_COMPILER "unknown")
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set(BUILD_TARGET "unknown")
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# Look for git
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find_package(Git)
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if(NOT Git_FOUND)
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execute_process(
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COMMAND which git
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OUTPUT_VARIABLE GIT_EXECUTABLE
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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if(NOT GIT_EXECUTABLE STREQUAL "")
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set(Git_FOUND TRUE)
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message(STATUS "Found Git using 'which': ${GIT_EXECUTABLE}")
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else()
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message(WARNING "Git not found using 'find_package' or 'which'. Build info will not be accurate. Consider installing Git or ensuring it is in the PATH.")
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endif()
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endif()
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# Get the commit count and hash
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if(Git_FOUND)
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execute_process(
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COMMAND ${GIT_EXECUTABLE} rev-parse --short HEAD
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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OUTPUT_VARIABLE HEAD
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE GIT_HEAD_RESULT
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)
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execute_process(
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COMMAND ${GIT_EXECUTABLE} rev-list --count HEAD
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
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OUTPUT_VARIABLE COUNT
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE GIT_COUNT_RESULT
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)
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if(GIT_HEAD_RESULT EQUAL 0 AND GIT_COUNT_RESULT EQUAL 0)
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set(BUILD_COMMIT ${HEAD})
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set(BUILD_NUMBER ${COUNT})
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endif()
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endif()
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if(GIT_HEAD_RESULT EQUAL 0 AND GIT_COUNT_RESULT EQUAL 0)
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set(BUILD_COMMIT ${HEAD})
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set(BUILD_NUMBER ${COUNT})
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endif()
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execute_process(
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COMMAND sh -c "$@ --version | head -1" _ ${CMAKE_C_COMPILER}
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OUTPUT_VARIABLE OUT
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE RES
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)
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if (RES EQUAL 0)
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set(BUILD_COMPILER ${OUT})
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endif()
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execute_process(
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COMMAND ${CMAKE_C_COMPILER} -dumpmachine
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OUTPUT_VARIABLE OUT
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OUTPUT_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE RES
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)
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if (RES EQUAL 0)
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set(BUILD_TARGET ${OUT})
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endif()
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# Only write the header if it's changed to prevent unnecessary recompilation
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if(EXISTS ${HEADER_FILE})
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file(READ ${HEADER_FILE} CONTENTS)
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string(REGEX MATCH "BUILD_COMMIT \"([^\"]*)\"" _ ${CONTENTS})
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set(OLD_COMMIT ${CMAKE_MATCH_1})
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string(REGEX MATCH "BUILD_COMPILER \"([^\"]*)\"" _ ${CONTENTS})
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set(OLD_COMPILER ${CMAKE_MATCH_1})
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string(REGEX MATCH "BUILD_TARGET \"([^\"]*)\"" _ ${CONTENTS})
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set(OLD_TARGET ${CMAKE_MATCH_1})
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if (
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NOT OLD_COMMIT STREQUAL BUILD_COMMIT OR
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NOT OLD_COMPILER STREQUAL BUILD_COMPILER OR
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NOT OLD_TARGET STREQUAL BUILD_TARGET
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)
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configure_file(${TEMPLATE_FILE} ${HEADER_FILE})
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endif()
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else()
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configure_file(${TEMPLATE_FILE} ${HEADER_FILE})
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endif()
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