diff options
Diffstat (limited to 'Modules/Platform/CYGWIN-GNU.cmake')
| -rw-r--r-- | Modules/Platform/CYGWIN-GNU.cmake | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Modules/Platform/CYGWIN-GNU.cmake b/Modules/Platform/CYGWIN-GNU.cmake index b81bd4d..ef64012 100644 --- a/Modules/Platform/CYGWIN-GNU.cmake +++ b/Modules/Platform/CYGWIN-GNU.cmake @@ -14,6 +14,34 @@ string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " -Wl,--enable-auto-import") set(CMAKE_GNULD_IMAGE_VERSION "-Wl,--major-image-version,<TARGET_VERSION_MAJOR>,--minor-image-version,<TARGET_VERSION_MINOR>") set(CMAKE_GENERATOR_RC windres) + + +# Features for LINK_LIBRARY generator expression +## check linker capabilities +if(NOT DEFINED _CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED) + execute_process(COMMAND "${CMAKE_LINKER}" --help + OUTPUT_VARIABLE __linker_help + ERROR_VARIABLE __linker_help) + if(__linker_help MATCHES "--push-state" AND __linker_help MATCHES "--pop-state") + set(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED TRUE CACHE INTERNAL "linker supports push/pop state") + else() + set(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED FALSE CACHE INTERNAL "linker supports push/pop state") + endif() + unset(__linker_help) +endif() +## WHOLE_ARCHIVE: Force loading all members of an archive +if(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED) + set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE "LINKER:--push-state,--whole-archive" + "<LINK_ITEM>" + "LINKER:--pop-state") +else() + set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE "LINKER:--whole-archive" + "<LINK_ITEM>" + "LINKER:--no-whole-archive") +endif() +set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE_SUPPORTED TRUE) + + macro(__cygwin_compiler_gnu lang) # Binary link rules. set(CMAKE_${lang}_CREATE_SHARED_MODULE |