granicus.if.org Git - libevent/blob - cmake/AddEventLibrary.cmake

   1 include(CMakeParseArguments)
   2
   3 set(LIBEVENT_SHARED_LIBRARIES "")
   4 set(LIBEVENT_STATIC_LIBRARIES "")
   5
   6 macro(set_event_shared_lib_flags LIB_NAME)
   7     set_target_properties("${LIB_NAME}_shared" PROPERTIES
   8         COMPILE_FLAGS ${ARGN})
   9     set_target_properties("${LIB_NAME}_shared" PROPERTIES
  10         LINK_FLAGS ${ARGN})
  11 endmacro()
  12
  13 macro(generate_pkgconfig LIB_NAME)
  14     set(prefix      ${CMAKE_INSTALL_PREFIX})
  15     set(exec_prefix ${CMAKE_INSTALL_PREFIX})
  16     set(libdir      ${CMAKE_INSTALL_PREFIX}/lib)
  17     set(includedir  ${CMAKE_INSTALL_PREFIX}/include)
  18
  19     set(VERSION ${EVENT_ABI_LIBVERSION})
  20
  21     set(LIBS         "")
  22     foreach (LIB ${LIB_PLATFORM})
  23         set(LIBS "${LIBS} -l${LIB}")
  24     endforeach()
  25
  26     set(OPENSSL_LIBS "")
  27     foreach(LIB ${OPENSSL_LIBRARIES})
  28         set(OPENSSL_LIBS "${OPENSSL_LIBS} -l${LIB}")
  29     endforeach()
  30
  31     configure_file("lib${LIB_NAME}.pc.in" "lib${LIB_NAME}.pc" @ONLY)
  32     install(
  33         FILES "${CMAKE_CURRENT_BINARY_DIR}/lib${LIB_NAME}.pc"
  34         DESTINATION "${CMAKE_INSTALL_PREFIX}/lib/pkgconfig"
  35     )
  36 endmacro()
  37
  38 # LIB_NAME maybe event_core, event_extra, event_openssl, event_pthreads or event.
  39 # Targets whose LIB_NAME is not 'event' should be exported and installed.
  40 macro(export_install_target TYPE LIB_NAME OUTER_INCLUDES)
  41     if("${LIB_NAME}" STREQUAL "event")
  42         install(TARGETS "${LIB_NAME}_${TYPE}"
  43             LIBRARY DESTINATION "lib" COMPONENT lib
  44             ARCHIVE DESTINATION "lib" COMPONENT lib
  45             RUNTIME DESTINATION "lib" COMPONENT lib
  46             COMPONENT dev
  47         )
  48     else()
  49         string(REPLACE "event_" "" PURE_NAME ${LIB_NAME})
  50         string(TOUPPER ${TYPE} UPPER_TYPE)
  51         list(APPEND LIBEVENT_${UPPER_TYPE}_LIBRARIES "${PURE_NAME}")
  52         set(OUTER_INCS)
  53         if (NOT "${OUTER_INCLUDES}" STREQUAL "NONE")
  54             set(OUTER_INCS ${OUTER_INCLUDES})
  55         endif()
  56         target_include_directories("${LIB_NAME}_${TYPE}"
  57             PUBLIC  "$<INSTALL_INTERFACE:include>"
  58                     "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
  59                     "$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>"
  60                     ${OUTER_INCS}
  61         )
  62         set_target_properties("${LIB_NAME}_${TYPE}" PROPERTIES EXPORT_NAME ${PURE_NAME})
  63         export(TARGETS "${LIB_NAME}_${TYPE}"
  64             NAMESPACE ${PROJECT_NAME}::
  65             FILE "${PROJECT_BINARY_DIR}/LibeventTargets-${TYPE}.cmake"
  66             APPEND
  67         )
  68         install(TARGETS "${LIB_NAME}_${TYPE}"
  69             EXPORT LibeventTargets-${TYPE}
  70             LIBRARY DESTINATION "lib" COMPONENT lib
  71             ARCHIVE DESTINATION "lib" COMPONENT lib
  72             RUNTIME DESTINATION "lib" COMPONENT lib
  73             COMPONENT dev
  74         )
  75     endif()
  76 endmacro()
  77
  78 # Global variables that it uses:
  79 # - EVENT_ABI_LIBVERSION
  80 # - EVENT_ABI_LIBVERSION_CURRENT
  81 # - EVENT_ABI_LIBVERSION_REVISION
  82 # - EVENT_ABI_LIBVERSION_AGE
  83 # - EVENT_PACKAGE_RELEASE
  84 # - CMAKE_THREAD_LIBS_INIT LIB_PLATFORM
  85 # - OPENSSL_LIBRARIES
  86 # - EVENT_SHARED_FLAGS
  87 # - EVENT_LIBRARY_STATIC
  88 # - EVENT_LIBRARY_SHARED
  89 #
  90 # Exported variables:
  91 # - LIBEVENT_SHARED_LIBRARIES
  92 # - LIBEVENT_STATIC_LIBRARIES
  93 macro(add_event_library LIB_NAME)
  94     cmake_parse_arguments(LIB
  95         "" # Options
  96         "VERSION" # One val
  97         "SOURCES;LIBRARIES;INNER_LIBRARIES;OUTER_INCLUDES" # Multi val
  98         ${ARGN}
  99     )
 100
 101     if ("${LIB_OUTER_INCLUDES}" STREQUAL "")
 102         set(LIB_OUTER_INCLUDES NONE)
 103     endif()
 104     set(ADD_EVENT_LIBRARY_INTERFACE)
 105     set(INNER_LIBRARIES)
 106
 107     if (${EVENT_LIBRARY_STATIC})
 108         add_library("${LIB_NAME}_static" STATIC ${LIB_SOURCES})
 109         set_target_properties("${LIB_NAME}_static" PROPERTIES
 110             OUTPUT_NAME "${LIB_NAME}"
 111             CLEAN_DIRECT_OUTPUT 1)
 112
 113         if(LIB_INNER_LIBRARIES)
 114             set(INNER_LIBRARIES "${LIB_INNER_LIBRARIES}_static")
 115         endif()
 116         target_link_libraries("${LIB_NAME}_static"
 117             ${CMAKE_THREAD_LIBS_INIT}
 118             ${LIB_PLATFORM}
 119             ${INNER_LIBRARIES}
 120             ${LIB_LIBRARIES})
 121
 122         export_install_target(static "${LIB_NAME}" "${LIB_OUTER_INCLUDES}")
 123
 124         set(ADD_EVENT_LIBRARY_INTERFACE "${LIB_NAME}_static")
 125     endif()
 126
 127     if (${EVENT_LIBRARY_SHARED})
 128         add_library("${LIB_NAME}_shared" SHARED ${LIB_SOURCES})
 129
 130         if(LIB_INNER_LIBRARIES)
 131             set(INNER_LIBRARIES "${LIB_INNER_LIBRARIES}_shared")
 132         endif()
 133         target_link_libraries("${LIB_NAME}_shared"
 134             ${CMAKE_THREAD_LIBS_INIT}
 135             ${LIB_PLATFORM}
 136             ${INNER_LIBRARIES}
 137             ${LIB_LIBRARIES})
 138
 139         if (EVENT_SHARED_FLAGS)
 140             set_event_shared_lib_flags("${LIB_NAME}" "${EVENT_SHARED_FLAGS}")
 141         endif()
 142
 143         if (WIN32)
 144             set_target_properties(
 145                 "${LIB_NAME}_shared" PROPERTIES
 146                 OUTPUT_NAME "${LIB_NAME}"
 147                 SOVERSION ${EVENT_ABI_LIBVERSION})
 148         elseif (APPLE)
 149             math(EXPR COMPATIBILITY_VERSION "${EVENT_ABI_LIBVERSION_CURRENT}+1")
 150             math(EXPR CURRENT_MINUS_AGE "${EVENT_ABI_LIBVERSION_CURRENT}-${EVENT_ABI_LIBVERSION_AGE}")
 151             set_target_properties(
 152                 "${LIB_NAME}_shared" PROPERTIES
 153                 OUTPUT_NAME "${LIB_NAME}-${EVENT_PACKAGE_RELEASE}.${CURRENT_MINUS_AGE}"
 154                 INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/lib"
 155                 LINK_FLAGS "-compatibility_version ${COMPATIBILITY_VERSION} -current_version ${COMPATIBILITY_VERSION}.${EVENT_ABI_LIBVERSION_REVISION}")
 156         else()
 157             math(EXPR CURRENT_MINUS_AGE "${EVENT_ABI_LIBVERSION_CURRENT}-${EVENT_ABI_LIBVERSION_AGE}")
 158             set_target_properties(
 159                 "${LIB_NAME}_shared" PROPERTIES
 160                 OUTPUT_NAME "${LIB_NAME}-${EVENT_PACKAGE_RELEASE}"
 161                 VERSION "${CURRENT_MINUS_AGE}.${EVENT_ABI_LIBVERSION_AGE}.${EVENT_ABI_LIBVERSION_REVISION}"
 162                 SOVERSION "${CURRENT_MINUS_AGE}")
 163         endif()
 164
 165         if (NOT WIN32)
 166             set(LIB_LINK_NAME
 167                 "${CMAKE_SHARED_LIBRARY_PREFIX}${LIB_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX}")
 168
 169             add_custom_command(TARGET ${LIB_NAME}_shared
 170                 POST_BUILD
 171                 COMMAND ${CMAKE_COMMAND} -E create_symlink
 172                     "$<TARGET_FILE_NAME:${LIB_NAME}_shared>"
 173                     "${LIB_LINK_NAME}"
 174                 WORKING_DIRECTORY "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}")
 175         endif()
 176
 177         export_install_target(shared "${LIB_NAME}" "${LIB_OUTER_INCLUDES}")
 178
 179         set(ADD_EVENT_LIBRARY_INTERFACE "${LIB_NAME}_shared")
 180
 181         if (NOT WIN32)
 182             install(FILES
 183                 "$<TARGET_FILE_DIR:${LIB_NAME}_shared>/${LIB_LINK_NAME}"
 184                 DESTINATION "lib"
 185                 COMPONENT lib)
 186         endif()
 187     endif()
 188
 189     add_library(${LIB_NAME} INTERFACE)
 190     target_link_libraries(${LIB_NAME} INTERFACE ${ADD_EVENT_LIBRARY_INTERFACE})
 191
 192     generate_pkgconfig("${LIB_NAME}")
 193 endmacro()