use DEFAULT_SYSROOT
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154792 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1197610..c828482 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,6 +66,10 @@
set(C_INCLUDE_DIRS "" CACHE STRING
"Colon separated list of directories clang will search for headers.")
+set(GCC_INSTALL_PREFIX "" CACHE PATH "Directory where gcc is installed." )
+set(DEFAULT_SYSROOT "" CACHE PATH
+ "Default <path> to all compiler invocations for --sysroot=<path>." )
+
set(CLANG_VENDOR "" CACHE STRING
"Vendor-specific text for showing with version information.")