| set(CMAKE_DL_LIBS "") |
| set(CMAKE_C_COMPILE_OPTIONS_PIC "-fPIC") |
| set(CMAKE_C_COMPILE_OPTIONS_PIE "-fPIE") |
| # PIE link options are managed in Compiler/<compiler>.cmake file |
| set(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC") # -pic |
| set(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "-shared") # -shared |
| set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "") # +s, flag for exe link to use shared lib |
| set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,") # -rpath |
| set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":") # : or empty |
| # Does not require -z origin since 10.2-RELEASE |
| set(CMAKE_SHARED_LIBRARY_RPATH_ORIGIN_TOKEN "\$ORIGIN") |
| set(CMAKE_SHARED_LIBRARY_RPATH_LINK_C_FLAG "-Wl,-rpath-link,") |
| set(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-Wl,-soname,") |
| set(CMAKE_EXE_EXPORTS_C_FLAG "-Wl,--export-dynamic") |
| |
| # Shared libraries with no builtin soname may not be linked safely by |
| # specifying the file path. |
| set(CMAKE_PLATFORM_USES_PATH_WHEN_NO_SONAME 1) |
| |
| # Initialize C link type selection flags. These flags are used when |
| # building a shared library, shared module, or executable that links |
| # to other libraries to select whether to use the static or shared |
| # versions of the libraries. |
| foreach(type SHARED_LIBRARY SHARED_MODULE EXE) |
| set(CMAKE_${type}_LINK_STATIC_C_FLAGS "-Wl,-Bstatic") |
| set(CMAKE_${type}_LINK_DYNAMIC_C_FLAGS "-Wl,-Bdynamic") |
| endforeach() |
| |
| |
| # Features for LINK_LIBRARY generator expression |
| ## check linker capabilities |
| if(NOT DEFINED _CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED) |
| execute_process(COMMAND "${CMAKE_LINKER}" --help |
| OUTPUT_VARIABLE __linker_help |
| ERROR_VARIABLE __linker_help) |
| if(__linker_help MATCHES "--push-state" AND __linker_help MATCHES "--pop-state") |
| set(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED TRUE CACHE INTERNAL "linker supports push/pop state") |
| else() |
| set(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED FALSE CACHE INTERNAL "linker supports push/pop state") |
| endif() |
| unset(__linker_help) |
| endif() |
| ## WHOLE_ARCHIVE: Force loading all members of an archive |
| if(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED) |
| set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE "LINKER:--push-state,--whole-archive" |
| "<LINK_ITEM>" |
| "LINKER:--pop-state") |
| else() |
| set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE "LINKER:--whole-archive" |
| "<LINK_ITEM>" |
| "LINKER:--no-whole-archive") |
| endif() |
| set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE_SUPPORTED TRUE) |
| |
| |
| # Features for LINK_GROUP generator expression |
| ## RESCAN: request the linker to rescan static libraries until there is |
| ## no pending undefined symbols |
| set(CMAKE_LINK_GROUP_USING_RESCAN "LINKER:--start-group" "LINKER:--end-group") |
| set(CMAKE_LINK_GROUP_USING_RESCAN_SUPPORTED TRUE) |
| |
| |
| include(Platform/UnixPaths) |