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86 lines
3.9 KiB
86 lines
3.9 KiB
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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# This module is shared by multiple languages; use include blocker.
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if(__CYGWIN_COMPILER_GNU)
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return()
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endif()
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set(__CYGWIN_COMPILER_GNU 1)
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# TODO: Is -Wl,--enable-auto-import now always default?
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string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " -Wl,--enable-auto-import")
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set(CMAKE_GNULD_IMAGE_VERSION
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"-Wl,--major-image-version,<TARGET_VERSION_MAJOR>,--minor-image-version,<TARGET_VERSION_MINOR>")
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set(CMAKE_GENERATOR_RC windres)
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# Features for LINK_LIBRARY generator expression
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## check linker capabilities
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if(NOT DEFINED _CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED)
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execute_process(COMMAND "${CMAKE_LINKER}" --help
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OUTPUT_VARIABLE __linker_help
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ERROR_VARIABLE __linker_help)
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if(__linker_help MATCHES "--push-state" AND __linker_help MATCHES "--pop-state")
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set(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED TRUE CACHE INTERNAL "linker supports push/pop state")
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else()
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set(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED FALSE CACHE INTERNAL "linker supports push/pop state")
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endif()
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unset(__linker_help)
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endif()
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## WHOLE_ARCHIVE: Force loading all members of an archive
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if(_CMAKE_LINKER_PUSHPOP_STATE_SUPPORTED)
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set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE "LINKER:--push-state,--whole-archive"
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"<LINK_ITEM>"
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"LINKER:--pop-state")
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else()
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set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE "LINKER:--whole-archive"
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"<LINK_ITEM>"
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"LINKER:--no-whole-archive")
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endif()
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set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE_SUPPORTED TRUE)
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set(CMAKE_LINK_LIBRARY_WHOLE_ARCHIVE_ATTRIBUTES LIBRARY_TYPE=STATIC DEDUPLICATION=YES OVERRIDE=DEFAULT)
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macro(__cygwin_compiler_gnu lang)
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# Binary link rules.
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set(CMAKE_${lang}_CREATE_SHARED_MODULE
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"<CMAKE_${lang}_COMPILER> <LANGUAGE_COMPILE_FLAGS> <CMAKE_SHARED_MODULE_${lang}_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS> -o <TARGET> ${CMAKE_GNULD_IMAGE_VERSION} <OBJECTS> <LINK_LIBRARIES>")
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set(CMAKE_${lang}_CREATE_SHARED_LIBRARY
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"<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> ${CMAKE_GNULD_IMAGE_VERSION} <OBJECTS> <LINK_LIBRARIES>")
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set(CMAKE_${lang}_LINK_EXECUTABLE
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"<CMAKE_${lang}_COMPILER> <FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> -Wl,--out-implib,<TARGET_IMPLIB> ${CMAKE_GNULD_IMAGE_VERSION} <LINK_LIBRARIES>")
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set(CMAKE_${lang}_CREATE_WIN32_EXE "-mwindows")
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set(CMAKE_${lang}_VERBOSE_LINK_FLAG "-Wl,-v")
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# No -fPIC on cygwin
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set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "")
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set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "")
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set(_CMAKE_${lang}_PIE_MAY_BE_SUPPORTED_BY_LINKER NO)
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set(CMAKE_${lang}_LINK_OPTIONS_PIE "")
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set(CMAKE_${lang}_LINK_OPTIONS_NO_PIE "")
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set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "")
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# Initialize C link type selection flags. These flags are used when
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# building a shared library, shared module, or executable that links
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# to other libraries to select whether to use the static or shared
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# versions of the libraries.
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foreach(type SHARED_LIBRARY SHARED_MODULE EXE)
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set(CMAKE_${type}_LINK_STATIC_${lang}_FLAGS "-Wl,-Bstatic")
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set(CMAKE_${type}_LINK_DYNAMIC_${lang}_FLAGS "-Wl,-Bdynamic")
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endforeach()
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set(CMAKE_EXE_EXPORTS_${lang}_FLAG "-Wl,--export-all-symbols")
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# TODO: Is -Wl,--enable-auto-import now always default?
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string(APPEND CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS " -Wl,--enable-auto-import")
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set(CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS "${CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS}")
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if(NOT CMAKE_RC_COMPILER_INIT)
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set(CMAKE_RC_COMPILER_INIT windres)
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endif()
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enable_language(RC)
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endmacro()
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