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95 lines
4.1 KiB
95 lines
4.1 KiB
set(CMAKE_DL_LIBS "dl")
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set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")
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set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":")
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set(CMAKE_SHARED_LIBRARY_RPATH_ORIGIN_TOKEN "\$ORIGIN")
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set(CMAKE_SHARED_LIBRARY_RPATH_LINK_C_FLAG "-Wl,-rpath-link,")
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set(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-Wl,-soname,")
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set(CMAKE_EXE_EXPORTS_C_FLAG "-Wl,--export-dynamic")
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# Shared libraries with no builtin soname may not be linked safely by
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# specifying the file path.
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set(CMAKE_PLATFORM_USES_PATH_WHEN_NO_SONAME 1)
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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_${type}_LINK_STATIC_C_FLAGS "-Wl,-Bstatic")
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set(CMAKE_${type}_LINK_DYNAMIC_C_FLAGS "-Wl,-Bdynamic")
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endforeach()
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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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# Features for LINK_GROUP generator expression
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## RESCAN: request the linker to rescan static libraries until there is
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## no pending undefined symbols
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set(CMAKE_LINK_GROUP_USING_RESCAN "LINKER:--start-group" "LINKER:--end-group")
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set(CMAKE_LINK_GROUP_USING_RESCAN_SUPPORTED TRUE)
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# Debian policy requires that shared libraries be installed without
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# executable permission. Fedora policy requires that shared libraries
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# be installed with the executable permission. Since the native tools
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# create shared libraries with execute permission in the first place a
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# reasonable policy seems to be to install with execute permission by
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# default. In order to support debian packages we provide an option
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# here. The option default is based on the current distribution, but
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# packagers can set it explicitly on the command line.
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if(DEFINED CMAKE_INSTALL_SO_NO_EXE)
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# Store the decision variable in the cache. This preserves any
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# setting the user provides on the command line.
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set(CMAKE_INSTALL_SO_NO_EXE "${CMAKE_INSTALL_SO_NO_EXE}" CACHE INTERNAL
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"Install .so files without execute permission.")
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else()
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# Store the decision variable as an internal cache entry to avoid
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# checking the platform every time. This option is advanced enough
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# that only package maintainers should need to adjust it. They are
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# capable of providing a setting on the command line.
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if(EXISTS "/etc/debian_version")
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set(CMAKE_INSTALL_SO_NO_EXE 1 CACHE INTERNAL
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"Install .so files without execute permission.")
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else()
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set(CMAKE_INSTALL_SO_NO_EXE 0 CACHE INTERNAL
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"Install .so files without execute permission.")
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endif()
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endif()
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include(Platform/UnixPaths)
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# Debian has lib32 and lib64 paths only for compatibility so they should not be
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# searched.
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if(NOT CMAKE_CROSSCOMPILING)
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if (EXISTS "/etc/debian_version")
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set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS FALSE)
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set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS FALSE)
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endif()
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if (EXISTS "/etc/arch-release")
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set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS FALSE)
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endif()
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endif()
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