44 lines
1.5 KiB
CMake
44 lines
1.5 KiB
CMake
find_first_existing_vc_file(llvm_vc "${LLVM_MAIN_SRC_DIR}")
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# The VC revision include that we want to generate.
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set(version_inc "${CMAKE_CURRENT_BINARY_DIR}/VCSRevision.h")
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set(get_svn_script "${LLVM_CMAKE_PATH}/GenerateVersionFromCVS.cmake")
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file(WRITE "${version_inc}.empty" "")
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if((DEFINED llvm_vc) AND LLVM_APPEND_VC_REV)
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execute_process(COMMAND ${CMAKE_COMMAND} -E compare_files
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"${version_inc}.empty" "${version_inc}"
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RESULT_VARIABLE files_not_equal
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OUTPUT_QUIET
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ERROR_QUIET)
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# Remove ${version_inc} if it's empty -- toggling LLVM_APPEND_VC_REV
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# from OFF to ON.
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if(NOT files_not_equal)
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file(REMOVE "${version_inc}")
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endif()
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# Create custom target to generate the VC revision include.
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add_custom_command(OUTPUT "${version_inc}"
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DEPENDS "${llvm_vc}" "${get_svn_script}"
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COMMAND
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${CMAKE_COMMAND} "-DSOURCE_DIR=${LLVM_MAIN_SRC_DIR}"
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"-DNAME=LLVM_REVISION"
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"-DHEADER_FILE=${version_inc}"
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-P "${get_svn_script}")
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else()
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# Make sure ${version_inc} is an empty file.
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different
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"${version_inc}.empty" "${version_inc}")
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endif()
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file(REMOVE "${version_inc}.empty")
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# Mark the generated header as being generated.
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set_source_files_properties("${version_inc}"
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PROPERTIES GENERATED TRUE
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HEADER_FILE_ONLY TRUE)
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add_custom_target(llvm_vcsrevision_h DEPENDS "${version_inc}")
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set_target_properties(llvm_vcsrevision_h PROPERTIES FOLDER "Misc")
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