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Diffstat (limited to 'Modules/Platform/CYGWIN-GNU.cmake')
| -rw-r--r-- | Modules/Platform/CYGWIN-GNU.cmake | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/Modules/Platform/CYGWIN-GNU.cmake b/Modules/Platform/CYGWIN-GNU.cmake new file mode 100644 index 0000000..ef64012 --- /dev/null +++ b/Modules/Platform/CYGWIN-GNU.cmake @@ -0,0 +1,82 @@ +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + + +# This module is shared by multiple languages; use include blocker. +if(__CYGWIN_COMPILER_GNU) + return() +endif() +set(__CYGWIN_COMPILER_GNU 1) + +# TODO: Is -Wl,--enable-auto-import now always default? +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 + "<CMAKE_${lang}_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_MODULE_${lang}_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS> -o <TARGET> ${CMAKE_GNULD_IMAGE_VERSION} <OBJECTS> <LINK_LIBRARIES>") + set(CMAKE_${lang}_CREATE_SHARED_LIBRARY + "<CMAKE_${lang}_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_LIBRARY_${lang}_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS> -o <TARGET> -Wl,--out-implib,<TARGET_IMPLIB> ${CMAKE_GNULD_IMAGE_VERSION} <OBJECTS> <LINK_LIBRARIES>") + set(CMAKE_${lang}_LINK_EXECUTABLE + "<CMAKE_${lang}_COMPILER> <FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> -Wl,--out-implib,<TARGET_IMPLIB> ${CMAKE_GNULD_IMAGE_VERSION} <LINK_LIBRARIES>") + set(CMAKE_${lang}_CREATE_WIN32_EXE "-mwindows") + + # No -fPIC on cygwin + set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "") + set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "") + set(_CMAKE_${lang}_PIE_MAY_BE_SUPPORTED_BY_LINKER NO) + set(CMAKE_${lang}_LINK_OPTIONS_PIE "") + set(CMAKE_${lang}_LINK_OPTIONS_NO_PIE "") + set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "") + + # 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_${type}_LINK_STATIC_${lang}_FLAGS "-Wl,-Bstatic") + set(CMAKE_${type}_LINK_DYNAMIC_${lang}_FLAGS "-Wl,-Bdynamic") + endforeach() + + set(CMAKE_EXE_EXPORTS_${lang}_FLAG "-Wl,--export-all-symbols") + # TODO: Is -Wl,--enable-auto-import now always default? + string(APPEND CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS " -Wl,--enable-auto-import") + set(CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS "${CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS}") + + if(NOT CMAKE_RC_COMPILER_INIT) + set(CMAKE_RC_COMPILER_INIT windres) + endif() + + enable_language(RC) +endmacro() |