| 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_ORIGIN_TOKEN "\$ORIGIN") |
| 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 lib32 and lib64 paths only for compatibility so they should not be |
| # searched. |
| if(NOT CMAKE_CROSSCOMPILING AND EXISTS "/etc/debian_version") |
| set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS FALSE) |
| set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS FALSE) |
| endif() |