myx-cmake/MyxCMake/modules/MyxCMakePkgConfig.cmake

function(myx_cmake_generate_pkgconfig target)
  set(options)
  set(oneVA COMPONENT BASENAME)
  set(multiVA)

  cmake_parse_arguments(ARG "${options}" "${oneVA}" "${multiVA}" ${ARGN})

  if(NOT ARG_BASENAME)
    set(ARG_BASENAME ${target})
  endif()

  if(NOT ARG_COMPONENT)
    set(ARG_COMPONENT dev)
  endif()

  get_target_property(__target_type ${target} TYPE)
  if(__target_type STREQUAL INTERFACE_LIBRARY)
    file(
      WRITE "${CMAKE_BINARY_DIR}/${BASENAME}.pc"
      "prefix=${CMAKE_INSTALL_PREFIX}\n"
      "exec_prefix=${CMAKE_INSTALL_PREFIX}\n"
      "includedir=${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}\n"
      "\n"
      "Name: ${BASENAME}\n"
      "Description: ${BASENAME} header-only library\n"
      "Version: ${PROJECT_VERSION}\n"
      "\n"
      "Requires:\n"
      "Cflags: -I${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}\n")
  else()
    file(
      WRITE "${CMAKE_BINARY_DIR}/${BASENAME}.pc"
      "prefix=${CMAKE_INSTALL_PREFIX}\n"
      "exec_prefix=${CMAKE_INSTALL_PREFIX}\n"
      "libdir=${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}\n"
      "includedir=${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}\n"
      "\n"
      "Name: ${BASENAME}\n"
      "Description: ${BASENAME} library\n"
      "Version: ${PROJECT_VERSION}\n"
      "\n"
      "Requires:\n"
      "Libs: -L${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR} -l${target}\n"
      "Cflags: -I${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_INCLUDEDIR}\n")
  endif()
  install(
    FILES "${CMAKE_BINARY_DIR}/${BASENAME}.pc"
    COMPONENT ${ARG_COMPONENT}
    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
endfunction()