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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 14 | pmbaty | 1 | # CMake script that writes version control information to a header. |
| 2 | # |
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| 3 | # Input variables: |
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| 4 | # NAMES - A list of names for each of the source directories. |
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| 5 | # <NAME>_SOURCE_DIR - A path to source directory for each name in NAMES. |
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| 6 | # HEADER_FILE - The header file to write |
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| 7 | # |
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| 8 | # The output header will contain macros <NAME>_REPOSITORY and <NAME>_REVISION, |
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| 9 | # where "<NAME>" is substituted with the names specified in the input variables, |
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| 10 | # for each of the <NAME>_SOURCE_DIR given. |
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| 11 | |||
| 12 | get_filename_component(LLVM_CMAKE_DIR "${CMAKE_SCRIPT_MODE_FILE}" PATH) |
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| 13 | |||
| 14 | list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}") |
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| 15 | |||
| 16 | include(VersionFromVCS) |
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| 17 | |||
| 18 | # Handle strange terminals |
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| 19 | set(ENV{TERM} "dumb") |
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| 20 | |||
| 21 | function(append_info name path) |
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| 22 | if(path) |
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| 23 | get_source_info("${path}" revision repository) |
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| 24 | endif() |
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| 25 | if(revision) |
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| 26 | file(APPEND "${HEADER_FILE}.tmp" |
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| 27 | "#define ${name}_REVISION \"${revision}\"\n") |
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| 28 | else() |
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| 29 | file(APPEND "${HEADER_FILE}.tmp" |
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| 30 | "#undef ${name}_REVISION\n") |
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| 31 | endif() |
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| 32 | if(repository) |
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| 33 | file(APPEND "${HEADER_FILE}.tmp" |
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| 34 | "#define ${name}_REPOSITORY \"${repository}\"\n") |
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| 35 | else() |
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| 36 | file(APPEND "${HEADER_FILE}.tmp" |
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| 37 | "#undef ${name}_REPOSITORY\n") |
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| 38 | endif() |
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| 39 | endfunction() |
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| 40 | |||
| 41 | foreach(name IN LISTS NAMES) |
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| 42 | if(NOT DEFINED ${name}_SOURCE_DIR) |
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| 43 | message(FATAL_ERROR "${name}_SOURCE_DIR is not defined") |
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| 44 | endif() |
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| 45 | append_info(${name} "${${name}_SOURCE_DIR}") |
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| 46 | endforeach() |
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| 47 | |||
| 48 | # Copy the file only if it has changed. |
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| 49 | execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different |
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| 50 | "${HEADER_FILE}.tmp" "${HEADER_FILE}") |
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| 51 | file(REMOVE "${HEADER_FILE}.tmp") |