Index: compiler-rt/trunk/cmake/Modules/AddCompilerRT.cmake
===================================================================
--- compiler-rt/trunk/cmake/Modules/AddCompilerRT.cmake
+++ compiler-rt/trunk/cmake/Modules/AddCompilerRT.cmake
@@ -276,7 +276,10 @@
     if(type STREQUAL "OBJECT")
       get_property(cflags_${libname} SOURCE ${sources_${libname}} PROPERTY COMPILE_FLAGS)
       if(CMAKE_C_COMPILER_ID MATCHES Clang AND CMAKE_C_COMPILER_TARGET)
-        list(APPEND cflags_${libname} "-target ${CMAKE_C_COMPILER_TARGET}")
+        list(APPEND cflags_${libname} "--target=${CMAKE_C_COMPILER_TARGET}")
+      endif()
+      if(CMAKE_SYSROOT)
+        list(APPEND cflags_${libname} "--sysroot=${CMAKE_SYSROOT}")
       endif()
       string(REPLACE ";" " " extra_cflags_${libname} "${extra_cflags_${libname}}")
       string(REGEX MATCHALL "<[A-Za-z0-9_]*>" substitutions
Index: compiler-rt/trunk/cmake/config-ix.cmake
===================================================================
--- compiler-rt/trunk/cmake/config-ix.cmake
+++ compiler-rt/trunk/cmake/config-ix.cmake
@@ -100,6 +100,7 @@
 check_cxx_compiler_flag("-Werror -Wvariadic-macros"    COMPILER_RT_HAS_WVARIADIC_MACROS_FLAG)
 check_cxx_compiler_flag("-Werror -Wunused-parameter"   COMPILER_RT_HAS_WUNUSED_PARAMETER_FLAG)
 check_cxx_compiler_flag("-Werror -Wcovered-switch-default" COMPILER_RT_HAS_WCOVERED_SWITCH_DEFAULT_FLAG)
+check_cxx_compiler_flag(-Wno-pedantic COMPILER_RT_HAS_WNO_PEDANTIC)
 
 check_cxx_compiler_flag(/W4 COMPILER_RT_HAS_W4_FLAG)
 check_cxx_compiler_flag(/WX COMPILER_RT_HAS_WX_FLAG)
Index: compiler-rt/trunk/lib/crt/CMakeLists.txt
===================================================================
--- compiler-rt/trunk/lib/crt/CMakeLists.txt
+++ compiler-rt/trunk/lib/crt/CMakeLists.txt
@@ -73,6 +73,7 @@
 
 append_list_if(COMPILER_RT_HAS_INITFINI_ARRAY -DCRT_HAS_INITFINI_ARRAY CRT_CFLAGS)
 append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC CRT_CFLAGS)
+append_list_if(COMPILER_RT_HAS_NO_PEDANTIC -Wno-pedantic CRT_CFLAGS)
 
 foreach(arch ${CRT_SUPPORTED_ARCH})
   add_compiler_rt_runtime(clang_rt.crtbegin