diff options
Diffstat (limited to 'Modules/Platform/Linux.cmake')
| -rw-r--r-- | Modules/Platform/Linux.cmake | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Modules/Platform/Linux.cmake b/Modules/Platform/Linux.cmake index b5d5464..a7e58ab 100644 --- a/Modules/Platform/Linux.cmake +++ b/Modules/Platform/Linux.cmake @@ -19,6 +19,39 @@ foreach(type SHARED_LIBRARY SHARED_MODULE EXE) 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) + + # Debian policy requires that shared libraries be installed without # executable permission. Fedora policy requires that shared libraries # be installed with the executable permission. Since the native tools |