Modules/Platform/FreeBSD.cmake

   1 set(BSD "FreeBSD")
   2 set(CMAKE_DL_LIBS "")
   3 set(CMAKE_C_COMPILE_OPTIONS_PIC "-fPIC")
   4 set(CMAKE_C_COMPILE_OPTIONS_PIE "-fPIE")
   5 # PIE link options are managed in Compiler/<compiler>.cmake file
   6 set(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC")            # -pic
   7 set(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared")       # -shared
   8 set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")         # +s, flag for exe link to use shared lib
   9 set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")       # -rpath
  10 set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":")   # : or empty
  11 # Does not require -z origin since 10.2-RELEASE
  12 set(CMAKE_SHARED_LIBRARY_RPATH_ORIGIN_TOKEN "\$ORIGIN")
  13 set(CMAKE_SHARED_LIBRARY_RPATH_LINK_C_FLAG "-Wl,-rpath-link,")
  14 set(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-Wl,-soname,")
  15 set(CMAKE_EXE_EXPORTS_C_FLAG "-Wl,--export-dynamic")
  16
  17 # Shared libraries with no builtin soname may not be linked safely by
  18 # specifying the file path.
  19 set(CMAKE_PLATFORM_USES_PATH_WHEN_NO_SONAME 1)
  20
  21 # Initialize C link type selection flags.  These flags are used when
  22 # building a shared library, shared module, or executable that links
  23 # to other libraries to select whether to use the static or shared
  24 # versions of the libraries.
  25 foreach(type SHARED_LIBRARY SHARED_MODULE EXE)
  26   set(CMAKE_${type}_LINK_STATIC_C_FLAGS "-Wl,-Bstatic")
  27   set(CMAKE_${type}_LINK_DYNAMIC_C_FLAGS "-Wl,-Bdynamic")
  28 endforeach()
  29
  30
  31 # Features for LINK_LIBRARY generator expression
  32 ## check linker capabilities
  33 if(NOT DEFINED _CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED)
  34   execute_process(COMMAND "${CMAKE_LINKER}" --help
  35                   OUTPUT_VARIABLE __linker_help
  36                   ERROR_VARIABLE __linker_help)
  37   if(__linker_help MATCHES "--push-state" AND __linker_help MATCHES "--pop-state")
  38     set(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED TRUE CACHE INTERNAL "linker supports push/pop state")
  39   else()
  40     set(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED FALSE CACHE INTERNAL "linker supports push/pop state")
  41   endif()
  42   unset(__linker_help)
  43 endif()
  44 ## WHOLE_ARCHIVE: Force loading all members of an archive
  45 if(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED)
  46   set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE "LINKER:--push-state,--whole-archive"
  47                                              "<LINK_ITEM>"
  48                                              "LINKER:--pop-state")
  49 else()
  50   set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE "LINKER:--whole-archive"
  51                                              "<LINK_ITEM>"
  52                                              "LINKER:--no-whole-archive")
  53 endif()
  54 set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE_SUPPORTED TRUE)
  55
  56
  57 # Features for LINK_GROUP generator expression
  58 ## RESCAN: request the linker to rescan static libraries until there is
  59 ## no pending undefined symbols
  60 set(CMAKE_LINK_GROUP_USING_RESCAN "LINKER:--start-group" "LINKER:--end-group")
  61 set(CMAKE_LINK_GROUP_USING_RESCAN_SUPPORTED TRUE)
  62
  63
  64 include(Platform/UnixPaths)