When building llvmCore, pass the SDKROOT and -arch setting to configure.

So far all of configure tests have been run against the default SDK and
architecture, regardless of what is actually being built.  We've gotten
lucky until now.  <rdar://problem/11112479>

llvm-svn: 153972

utils/buildit/build_llvm

@@ -120,11 +120,21 @@ else
   configure_opts="--enable-targets=arm,x86"
 fi
 
+if [ "$ARM_HOSTED_BUILD" != yes ]; then
+  if [ $SDKROOT ]; then
+    CPPFLAGS="$CPPFLAGS -isysroot $SDKROOT"
+  fi
+  for host in $HOSTS; do
+    CPPFLAGS="$CPPFLAGS -arch $host"
+  done
+fi
+
 if [ \! -f Makefile.config ]; then
   $SRC_DIR/configure --prefix=$DEST_DIR$DEST_ROOT $configure_opts \
     --enable-assertions=$LLVM_ASSERTIONS \
     --enable-optimized=$LLVM_OPTIMIZED \
     --disable-bindings \
+    CPPFLAGS="$CPPFLAGS" \
     || exit 1
 fi