Clear UNIVERSAL_SDK_PATH setting when building host tools. <rdar://12360497>

I also moved the SDKROOT setting into the make flags, since clearing it from
the environment isn't good enough to override a setting on the make command
line.  That hasn't been a problem but it could be, and it's good to be
consistent with the way UNIVERSAL_SDK_PATH is handled.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164565 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/Makefile b/Makefile
index a935df469c6582cc00d8bd312d122dcaf278afa2..e59441c4329a56294ad7afccd2d58db0cc95d741 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -112,15 +112,17 @@ cross-compile-build-tools:
          unset CFLAGS ; \
          unset CXXFLAGS ; \
          unset SDKROOT ; \
+         unset UNIVERSAL_SDK_PATH ; \
          $(PROJ_SRC_DIR)/configure --build=$(BUILD_TRIPLE) \
                --host=$(BUILD_TRIPLE) --target=$(BUILD_TRIPLE) \
                --disable-polly ; \
          cd .. ; \
        fi; \
-       (unset SDKROOT; \
-        $(MAKE) -C BuildTools \
+       ($(MAKE) -C BuildTools \
          BUILD_DIRS_ONLY=1 \
          UNIVERSAL= \
+         UNIVERSAL_SDK_PATH= \
+         SDKROOT= \
          TARGET_NATIVE_ARCH="$(TARGET_NATIVE_ARCH)" \
          TARGETS_TO_BUILD="$(TARGETS_TO_BUILD)" \
          ENABLE_OPTIMIZED=$(ENABLE_OPTIMIZED) \