mirror of https://github.com/polybar/polybar.git
60 lines
2.1 KiB
CMake
60 lines
2.1 KiB
CMake
# Loads multiple XCB components
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# Version checks will be made against all requested components
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#
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# For each component ${comp} it does the following:
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#
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# Defines an imported target `Xcb::${comp}` if xcb-${comp} is found
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#
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# Defines the following Variables (see find_package_impl for more info):
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# Xcb_${comp}_FOUND
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# Xcb_${comp}_INCLUDE_DIR
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# Xcb_${comp}_INCLUDE_DIRS
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# Xcb_${comp}_LIBRARY
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# Xcb_${comp}_LIBRARIES
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# Xcb_${comp}_VERSION
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# This script only supports the following components of XCB
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set(XCB_known_components
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XCB
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RANDR
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COMPOSITE
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XKB
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XRM
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CURSOR)
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# Deducing header from the name of the component
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foreach(_comp ${XCB_known_components})
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string(TOLOWER "${_comp}" _lc_comp)
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set(XCB_${_comp}_pkg_config "xcb-${_lc_comp}")
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set(XCB_${_comp}_header "xcb/${_lc_comp}.h")
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endforeach()
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# Exception cases
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set(XCB_XRM_header "xcb/xcb_xrm.h")
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set(XCB_CURSOR_header "xcb/xcb_cursor.h")
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foreach(_comp ${Xcb_FIND_COMPONENTS})
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if (NOT ${_comp} IN_LIST XCB_known_components)
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message(FATAL_ERROR "Unknow component \"${_comp}\" of XCB")
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endif()
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# Forward the different find options set for FindXcb to the individual
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# components. This is required because find_package_handle_standard_args in
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# find_package_impl uses these variables for version checks and other things.
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set(Xcb_${_comp}_FIND_VERSION ${Xcb_FIND_VERSION})
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set(Xcb_${_comp}_FIND_QUIETLY ${Xcb_FIND_QUIETLY})
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set(Xcb_${_comp}_FIND_REQUIRED ${Xcb_FIND_REQUIRED})
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# Bypass developer warning that the first argument to
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# find_package_handle_standard_args (Xcb_...) does not match the name of the
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# calling package (Xcb)
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# https://cmake.org/cmake/help/v3.17/module/FindPackageHandleStandardArgs.html
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set(FPHSA_NAME_MISMATCHED TRUE)
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find_package_impl(${XCB_${_comp}_pkg_config} "Xcb_${_comp}" "${XCB_${_comp}_header}")
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if(Xcb_${_comp}_FOUND AND NOT TARGET Xcb::${_comp})
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create_imported_target("Xcb::${_comp}" "${Xcb_${_comp}_INCLUDE_DIRS}" "${Xcb_${_comp}_LIBRARIES}")
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elseif(NOT Xcb_${_comp}_FOUND AND Xcb_FIND_REQUIRED)
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message(FATAL_ERROR "Xcb: Required component \"${_comp}\" was not found")
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endif()
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endforeach()
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