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ca95ad9618
They'll only get installed when the distribution version differs from existing version on disk.
26 lines
1.1 KiB
CMake
26 lines
1.1 KiB
CMake
# Determines at `make install` time if a file, typically a configuration
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# file placed in $PREFIX/etc, shouldn't be installed to prevent overwrite
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# of an existing file.
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#
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# _srcfile: the file to install
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# _dstfile: the absolute file name after installation
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macro(InstallClobberImmune _srcfile _dstfile)
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install(CODE "
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if (EXISTS ${_dstfile})
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message(STATUS \"Skipping: ${_dstfile} (already exists)\")
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execute_process(COMMAND \"${CMAKE_COMMAND}\" -E compare_files
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${_srcfile} ${_dstfile} RESULT_VARIABLE _diff)
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if (NOT \"\${_diff}\" STREQUAL \"0\")
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message(STATUS \"Installing: ${_dstfile}.example\")
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configure_file(${_srcfile} ${_dstfile}.example COPY_ONLY)
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endif ()
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else ()
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message(STATUS \"Installing: ${_dstfile}\")
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# install() is not scriptable within install(), and
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# configure_file() is the next best thing
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configure_file(${_srcfile} ${_dstfile} COPY_ONLY)
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# TODO: create additional install_manifest files?
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endif ()
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")
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endmacro(InstallClobberImmune)
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