91 lines
2.9 KiB
CMake
91 lines
2.9 KiB
CMake
# PkgConfigEx.cmake
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#
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# Extends CMake's PkgConfig module with commands:
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#
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# pkg_check_modules_for_option(_option_name _option_description _prefix _module0)
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#
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# which calls `pkg_check_modules(_prefix _module0)` and if <_prefix>_FOUND is False,
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# then prints an error with a hint to disaable the _option_name if needed.
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#
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# pkg_check_exists(_output_name _pkg)
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#
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# calls pkg-config --exists for _pkg and stores the result to _output_name.
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#
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# pkg_check_at_least_version(_output_name _pkg _version)
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#
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# calls pkg-config --at-least-version=_version for _pkg and stores the result to _output_name.
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#
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# pkg_check_exact_version(_output_name _pkg _version)
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#
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# calls pkg-config --exact-version=_version for _pkg and stores the result to _output_name.
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#
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# pkg_check_variable(_output_name _pkg _name)
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#
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# gets a variable named _name from package _pkg and stores the result into _output_name
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find_package(PkgConfig REQUIRED)
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macro(pkg_check_modules_for_option _option_name _option_description _prefix _module0)
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pkg_check_modules(${_prefix} ${_module0} ${ARGN})
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if(NOT ${_prefix}_FOUND)
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message(FATAL_ERROR "Necessary libraries not found or not enough version. If you want to disable ${_option_description}, please use -D${_option_name}=OFF argument to cmake command.")
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endif(NOT ${_prefix}_FOUND)
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endmacro()
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macro(pkg_check_exists _output_name _pkg)
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execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --exists ${_pkg}
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RESULT_VARIABLE ${_output_name})
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# Negate the result, because 0 means 'found'
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if(${_output_name})
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set(${_output_name} OFF)
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else(${_output_name})
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set(${_output_name} ON)
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endif(${_output_name})
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endmacro()
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macro(pkg_check_at_least_version _output_name _pkg _version)
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execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --atleast-version=${_version} ${_pkg}
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RESULT_VARIABLE ${_output_name})
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# Negate the result, because 0 means 'found'
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if(${_output_name})
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set(${_output_name} OFF)
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else(${_output_name})
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set(${_output_name} ON)
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endif(${_output_name})
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endmacro()
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macro(pkg_check_exact_version _output_name _pkg _version)
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execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --exact-version=${_version} ${_pkg}
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RESULT_VARIABLE ${_output_name})
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# Negate the result, because 0 means 'found'
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if(${_output_name})
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set(${_output_name} OFF)
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else(${_output_name})
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set(${_output_name} ON)
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endif(${_output_name})
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endmacro()
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function(pkg_check_variable _output_name _pkg _name)
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execute_process(COMMAND ${PKG_CONFIG_EXECUTABLE} --variable=${_name} ${_pkg}
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OUTPUT_VARIABLE _pkg_result
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OUTPUT_STRIP_TRAILING_WHITESPACE)
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set("${_output_name}" "${_pkg_result}" CACHE STRING "pkg-config variable ${_name} of ${_pkg}")
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endfunction()
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macro(add_pkgconfig_file _input _output)
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configure_file(
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${CMAKE_CURRENT_SOURCE_DIR}/${_input}
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${CMAKE_CURRENT_BINARY_DIR}/${_output}
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@ONLY
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)
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install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${_output}
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DESTINATION ${LIB_INSTALL_DIR}/pkgconfig
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)
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endmacro()
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