thodg/libgit2/cmake/Modules/PkgBuildConfig.cmake

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• Hash : d80d9d56
  Author :
  Date : 2019-08-17T12:17:21
  

  cmake: streamline *.pc file handling via a module

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• cmake/Modules/PkgBuildConfig.cmake

• # pkg-config file generation
  #
  # Uses the following globals:
  # - PKG_BUILD_PREFIX: the build location (aka prefix). Defaults to CMAKE_INSTALL_PREFIX
  # - PKG_BUILD_LIBDIR: the libdir location. Defaults to ${prefix}/lib.
  # - PKG_BUILD_INCLUDEDIR: the includedir location. Defaults to ${prefix}/include.
  #
  
  function(pkg_build_config)
      set(options)
      set(oneValueArgs NAME DESCRIPTION VERSION FILENAME LIBS_SELF)
      set(multiValueArgs LIBS PRIVATE_LIBS REQUIRES CFLAGS)
  
      cmake_parse_arguments(PKGCONFIG "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
  
      if (NOT DEFINED PKGCONFIG_FILENAME AND DEFINED PKGCONFIG_NAME)
          set(PKGCONFIG_FILENAME ${PKGCONFIG_NAME})
      endif()
      if (NOT DEFINED PKGCONFIG_FILENAME)
          message(FATAL_ERROR "Missing FILENAME argument")
      endif()
      set(PKGCONFIG_FILE "${PROJECT_BINARY_DIR}/${PKGCONFIG_FILENAME}.pc")
  
      if (NOT DEFINED PKGCONFIG_DESCRIPTION)
          message(FATAL_ERROR "Missing DESCRIPTION argument")
      endif()
  
      if (NOT DEFINED PKGCONFIG_VERSION)
          message(FATAL_ERROR "Missing VERSION argument")
      endif()
  
      if (DEFINED PKG_BUILD_PREFIX)
          set(PKGCONFIG_PREFIX "${PKG_BUILD_PREFIX}")
      else()
          set(PKGCONFIG_PREFIX "${CMAKE_INSTALL_PREFIX}")
      endif()
  
      if(DEFINED PKG_BUILD_LIBDIR)
          if (IS_ABSOLUTE ${PKG_BUILD_LIBDIR})
              set(PKGCONFIG_LIBDIR ${PKG_BUILD_LIBDIR})
          else()
              set(PKGCONFIG_LIBDIR "\${prefix}/${PKG_BUILD_LIBDIR}")
          endif()
      else()
          set(PKGCONFIG_LIBDIR "\${prefix}/lib")
      endif()
  
      if(DEFINED PKG_BUILD_INCLUDEDIR)
          if (IS_ABSOLUTE ${PKG_BUILD_INCLUDEDIR})
              set(PKGCONFIG_INCLUDEDIR ${PKG_BUILD_INCLUDEDIR})
          else()
              set(PKGCONFIG_INCLUDEDIR "\${prefix}/${PKG_BUILD_INCLUDEDIR}")
          endif()
      else()
          set(PKGCONFIG_INCLUDEDIR "\${prefix}/include")
      endif()
  
      # Write .pc "header"
      file(WRITE "${PKGCONFIG_FILE}"
          "prefix=\"${PKGCONFIG_PREFIX}\"\n"
          "libdir=\"${PKGCONFIG_LIBDIR}\"\n"
          "includedir=\"${PKGCONFIG_INCLUDEDIR}\"\n"
          "\n"
          "Name: ${PKGCONFIG_NAME}\n"
          "Description: ${PKGCONFIG_DESCRIPTION}\n"
          "Version: ${PKGCONFIG_VERSION}\n"
      )
  
      # Prepare Libs
      if(NOT DEFINED PKGCONFIG_LIBS_SELF)
          set(PKGCONFIG_LIBS_SELF "${PKGCONFIG_FILE}")
      endif()
  
      if(NOT DEFINED PKGCONFIG_LIBS)
          set(PKGCONFIG_LIBS "-l${PKGCONFIG_LIBS_SELF}")
      else()
          list(INSERT PKGCONFIG_LIBS 0 "-l${PKGCONFIG_LIBS_SELF}")
      endif()
  
      list(REMOVE_DUPLICATES PKGCONFIG_LIBS)
      string(REPLACE ";" " " PKGCONFIG_LIBS "${PKGCONFIG_LIBS}")
      file(APPEND "${PKGCONFIG_FILE}" "Libs: -L\${libdir} ${PKGCONFIG_LIBS}\n")
  
      # Prepare Libs.private
      if(DEFINED PKGCONFIG_PRIVATE_LIBS)
          list(REMOVE_DUPLICATES PKGCONFIG_PRIVATE_LIBS)
          string(REPLACE ";" " " PKGCONFIG_PRIVATE_LIBS "${PKGCONFIG_PRIVATE_LIBS}")
          file(APPEND "${PKGCONFIG_FILE}" "Libs.private: ${PKGCONFIG_PRIVATE_LIBS}\n")
      endif()
  
      # Prepare Requires.private
      if(DEFINED PKGCONFIG_REQUIRES)
          list(REMOVE_DUPLICATES PKGCONFIG_REQUIRES)
          string(REPLACE ";" " " PKGCONFIG_REQUIRES "${PKGCONFIG_REQUIRES}")
          file(APPEND "${PKGCONFIG_FILE}" "Requires.private: ${PKGCONFIG_REQUIRES}\n")
      endif()
  
      # Prepare Cflags
      if(DEFINED PKGCONFIG_CFLAGS)
          string(REPLACE ";" " " PKGCONFIG_CFLAGS "${PKGCONFIG_CFLAGS}")
      else()
          set(PKGCONFIG_CFLAGS "")
      endif()
      file(APPEND "${PKGCONFIG_FILE}" "Cflags: -I\${includedir} ${PKGCONFIG_CFLAGS}\n")
  
      # Install .pc file
      install(FILES "${PKGCONFIG_FILE}"
          DESTINATION "${PKGCONFIG_PREFIX}/${PKGCONFIG_LIBDIR}/pkgconfig"
      )
  endfunction()
  

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