diff options
Diffstat (limited to 'Modules/Platform/Linux.cmake')
-rw-r--r-- | Modules/Platform/Linux.cmake | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/Modules/Platform/Linux.cmake b/Modules/Platform/Linux.cmake new file mode 100644 index 000000000..38f469b33 --- /dev/null +++ b/Modules/Platform/Linux.cmake @@ -0,0 +1,57 @@ +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(type) + +# 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(DEFINED CMAKE_INSTALL_SO_NO_EXE) + # 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(EXISTS "/etc/debian_version") + SET(CMAKE_INSTALL_SO_NO_EXE 0 CACHE INTERNAL + "Install .so files without execute permission.") + ENDIF(EXISTS "/etc/debian_version") +ENDIF(DEFINED CMAKE_INSTALL_SO_NO_EXE) + +# 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(EXISTS "/etc/debian_version") |