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-rw-r--r--Modules/Platform/Linux.cmake57
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")