Update CROSSTOOL for Mac to support Bazel 0.12.0 and above

third_party/com_github_bazelbuild_bazel/tools/cpp/osx_cc_wrapper.sh

@@ -42,7 +42,7 @@ for i in "$@"; do
         LIBS="${BASH_REMATCH[1]} $LIBS"
     elif [[ "$i" =~ ^-L(.*)$ ]]; then
         LIB_DIRS="${BASH_REMATCH[1]} $LIB_DIRS"
-    elif [[ "$i" =~ ^-Wl,-rpath,\$ORIGIN/(.*)$ ]]; then
+    elif [[ "$i" =~ ^-Wl,-rpath,\@loader_path/(.*)$ ]]; then
         RPATHS="${BASH_REMATCH[1]} ${RPATHS}"
     elif [[ "$i" = "-o" ]]; then
         # output is coming

third_party/com_github_bazelbuild_bazel/vendor.txt

@@ -1,6 +1,6 @@
 The files in this directory tree (other than this file) are derived from Bazel:
 
   remote = "https://github.com/bazelbuild/bazel.git"
-  sha = "600ab49a98bcb6d96231174b44bd4ae335de4dbf"
+  sha = "f98a7a2fedb3e714cef1038dcb85f83731150246"
 
 Please update this metadata when copying new versions from upstream.

tools/cc_toolchain/BUILD

@@ -25,7 +25,7 @@ package(default_visibility = ["//visibility:public"])
 cc_toolchain_suite(
     name = "default-toolchain",
     toolchains = {
-        "darwin|compiler": "cc_toolchain_apple",
+        "darwin_x86_64|compiler": "cc_toolchain_apple",
         "k8|clang-4.0": "cc_toolchain_linux",
         "k8|gcc-5": "cc_toolchain_linux",
         "k8|gcc-6": "cc_toolchain_linux",
@@ -99,7 +99,7 @@ cc_toolchain(
     name = "cc_toolchain_apple",
     all_files = ":apple_toolchain_deps",
     compiler_files = ":apple_toolchain_deps",
-    cpu = "darwin",
+    cpu = "darwin_x86_64",
     dwp_files = ":apple_toolchain_deps",
     dynamic_runtime_libs = [":empty"],
     linker_files = ":apple_toolchain_deps",
@@ -118,7 +118,7 @@ config_setting(
     name = "apple_debug",
     values = {
         "compilation_mode": "dbg",
-        "cpu": "darwin",
+        "cpu": "darwin_x86_64",
     },
 )