set(CMAKE_DL_LIBS "dl") set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,") set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":") set(CMAKE_SHARED_LIBRARY_RPATH_LINK_C_FLAG "-Wl,-rpath-link,") set(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-Wl,-soname,") set(CMAKE_EXE_EXPORTS_C_FLAG "-Wl,--export-dynamic") # Shared libraries with no builtin soname may not be linked safely by # specifying the file path. set(CMAKE_PLATFORM_USES_PATH_WHEN_NO_SONAME 1) # 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_${type}_LINK_STATIC_C_FLAGS "-Wl,-Bstatic") set(CMAKE_${type}_LINK_DYNAMIC_C_FLAGS "-Wl,-Bdynamic") endforeach() # 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 # create shared libraries with execute permission in the first place a # reasonable policy seems to be to install with execute permission by # default. In order to support debian packages we provide an option # here. The option default is based on the current distribution, but # packagers can set it explicitly on the command line. if(DEFINED CMAKE_INSTALL_SO_NO_EXE) # Store the decision variable in the cache. This preserves any # setting the user provides on the command line. set(CMAKE_INSTALL_SO_NO_EXE "${CMAKE_INSTALL_SO_NO_EXE}" CACHE INTERNAL "Install .so files without execute permission.") else() # Store the decision variable as an internal cache entry to avoid # checking the platform every time. This option is advanced enough # that only package maintainers should need to adjust it. They are # capable of providing a setting on the command line. if(EXISTS "/etc/debian_version") set(CMAKE_INSTALL_SO_NO_EXE 1 CACHE INTERNAL "Install .so files without execute permission.") else() set(CMAKE_INSTALL_SO_NO_EXE 0 CACHE INTERNAL "Install .so files without execute permission.") endif() endif() # Match multiarch library directory names. set(CMAKE_LIBRARY_ARCHITECTURE_REGEX "[a-z0-9_]+(-[a-z0-9_]+)?-linux-gnu[a-z0-9_]*") include(Platform/UnixPaths) # Debian has lib64 paths only for compatibility so they should not be # searched. if(EXISTS "/etc/debian_version") set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS FALSE) endif()