Subzero: Use ccache for building, if available.

This is needed since we are now using an absolute (and non-standard) path to clang++. BUG= none R=jvoung@chromium.org Review URL: https://codereview.chromium.org/567393007

Subzero: Use ccache for building, if available.
5e06f9f4 · Jim Stichnoth · 1873560a · 5e06f9f4
Commit 5e06f9f4 authored Sep 17, 2014 by Jim Stichnoth
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Makefile.standalone Makefile.standalone +2 -1

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--- a/Makefile.standalone
+++ b/Makefile.standalone
@@ -51,7 +51,8 @@ LLVM_LDFLAGS := `$(LLVM_BIN_PATH)/llvm-config --libs` \

 # It's recommended that CXX matches the compiler you used to build LLVM itself.
 OPTLEVEL := -O0
-CXX := $(CLANG_PATH)/clang++
+CCACHE := `command -v ccache`
+CXX := CCACHE_CPP2=yes $(CCACHE) $(CLANG_PATH)/clang++

 CXXFLAGS := $(LLVM_CXXFLAGS) -Wall -Wextra -Werror -fno-rtti \
 	-fno-exceptions $(OPTLEVEL) -g $(HOST_FLAGS) \