Index: llvm-toolchain-snapshot_4.0~svn280802/compiler-rt/cmake/config-ix.cmake
===================================================================
--- llvm-toolchain-snapshot_4.0~svn280802.orig/compiler-rt/cmake/config-ix.cmake
+++ llvm-toolchain-snapshot_4.0~svn280802/compiler-rt/cmake/config-ix.cmake
@@ -415,7 +415,8 @@ list_replace(COMPILER_RT_SANITIZERS_TO_B
 
 if (SANITIZER_COMMON_SUPPORTED_ARCH AND NOT LLVM_USE_SANITIZER AND
     (OS_NAME MATCHES "Android|Darwin|Linux|FreeBSD" OR
-    (OS_NAME MATCHES "Windows" AND MSVC)))
+    (OS_NAME MATCHES "Windows" AND MSVC))
+    AND NOT (OS_NAME STREQUAL "kFreeBSD"))
   set(COMPILER_RT_HAS_SANITIZER_COMMON TRUE)
 else()
   set(COMPILER_RT_HAS_SANITIZER_COMMON FALSE)
Index: llvm-toolchain-snapshot_4.0~svn280802/tools/llvm-shlib/CMakeLists.txt
===================================================================
--- llvm-toolchain-snapshot_4.0~svn280802.orig/tools/llvm-shlib/CMakeLists.txt
+++ llvm-toolchain-snapshot_4.0~svn280802/tools/llvm-shlib/CMakeLists.txt
@@ -40,7 +40,7 @@ add_llvm_library(LLVM SHARED DISABLE_LLV
 set_property(TARGET LLVM PROPERTY VERSION "1") # Append .1 to SONAME
 
 list(REMOVE_DUPLICATES LIB_NAMES)
-if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux") # FIXME: It should be "GNU ld for elf"
+if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux" OR "${CMAKE_SYSTEM_NAME}" STREQUAL "GNU" OR "${CMAKE_SYSTEM_NAME}" STREQUAL "kFreeBSD") # FIXME: It should be "GNU ld for elf"
   # GNU ld doesn't resolve symbols in the version script.
   set(LIB_NAMES -Wl,--whole-archive ${LIB_NAMES} -Wl,--no-whole-archive)
 elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin")
Index: llvm-toolchain-snapshot_4.0~svn280802/lldb/cmake/LLDBDependencies.cmake
===================================================================
--- llvm-toolchain-snapshot_4.0~svn280802.orig/lldb/cmake/LLDBDependencies.cmake
+++ llvm-toolchain-snapshot_4.0~svn280802/lldb/cmake/LLDBDependencies.cmake
@@ -166,7 +166,7 @@ if (NOT HAVE_CXX_ATOMICS64_WITHOUT_LIB )
 endif()
 
 # On FreeBSD/NetBSD backtrace() is provided by libexecinfo, not libc.
-if (CMAKE_SYSTEM_NAME MATCHES "FreeBSD" OR CMAKE_SYSTEM_NAME MATCHES "NetBSD")
+if ((CMAKE_SYSTEM_NAME MATCHES "FreeBSD" OR CMAKE_SYSTEM_NAME MATCHES "NetBSD") AND NOT CMAKE_SYSTEM_NAME STREQUAL "kFreeBSD")
   list(APPEND LLDB_SYSTEM_LIBS execinfo)
 endif()
 
Index: llvm-toolchain-snapshot_4.0~svn280802/lldb/scripts/utilsOsType.py
===================================================================
--- llvm-toolchain-snapshot_4.0~svn280802.orig/lldb/scripts/utilsOsType.py
+++ llvm-toolchain-snapshot_4.0~svn280802/lldb/scripts/utilsOsType.py
@@ -36,6 +36,7 @@ if sys.version_info.major >= 3:
         Linux = 3
         NetBSD = 4
         Windows = 5
+        kFreeBSD = 6
 else:
     class EnumOsType(object):
         values = ["Unknown",
@@ -43,7 +44,9 @@ else:
                   "FreeBSD",
                   "Linux",
                   "NetBSD",
-                  "Windows"]
+                  "Windows",
+                  "kFreeBSD"
+                  ]
 
         class __metaclass__(type):
             #++----------------------------------------------------------------
@@ -91,5 +94,7 @@ def determine_os_type():
         eOSType = EnumOsType.NetBSD
     elif strOS == "win32":
         eOSType = EnumOsType.Windows
+    elif strOS.startswith("gnukfreebsd"):
+        eOSType = EnumOsType.kFreeBSD
 
     return eOSType
Index: llvm-toolchain-snapshot_4.0~svn280802/lldb/scripts/Python/modules/CMakeLists.txt
===================================================================
--- llvm-toolchain-snapshot_4.0~svn280802.orig/lldb/scripts/Python/modules/CMakeLists.txt
+++ llvm-toolchain-snapshot_4.0~svn280802/lldb/scripts/Python/modules/CMakeLists.txt
@@ -5,7 +5,7 @@ if (CXX_SUPPORTS_NO_MACRO_REDEFINED)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-macro-redefined")
 endif ()
 
-# build the Python readline suppression module only on Linux
-if (CMAKE_SYSTEM_NAME MATCHES "Linux" AND NOT __ANDROID_NDK__)
+# build the Python readline suppression module only on Linux or GNU systems
+if ((CMAKE_SYSTEM_NAME MATCHES "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "GNU" OR CMAKE_SYSTEM_NAME STREQUAL "kFreeBSD") AND NOT __ANDROID_NDK__)
    add_subdirectory(readline)
 endif()