Revert "Revert "Adjust Subzero CMAKE=1 build to also use libc++ (like autoconf).""

Makefile.standalone

 # The following variables will likely need to be modified, depending on where
 # and how you built LLVM & Clang. They can be overridden in a command-line
 # invocation of make, like:
 #
 #   make LLVM_SRC_PATH=<path> LLVM_BIN_PATH=<path> \
 #        LIBCXX_INSTALL_PATH=<path> CLANG_PATH=<path> \
 #        PNACL_BIN_PATH=<path> ...
 #
 
 # LLVM_SRC_PATH is the path to the root of the checked out source code. This
 # directory should contain the configure script, the include/ and lib/
 # directories of LLVM, Clang in tools/clang/, etc.
 # Alternatively, if you're building vs. a binary download of LLVM, then
 # LLVM_SRC_PATH can point to the main untarred directory.
 LLVM_SRC_PATH ?= ../llvm
 
 # LLVM_BIN_PATH is the directory where binaries are placed by the LLVM build
 # process. It should contain the tools like clang, clang-format, llc,
 # llvm-as, llvm-config, llvm-mc, pnacl-bcdis, and pnacl-freeze.
 ifdef CMAKE
   # LLVM cmake build
   LLVM_BIN_PATH ?= ../../out/llvm_x86_64_linux_work/bin
-  STDLIB_FLAGS =
 else
   # LLVM autoconf build
   LLVM_BIN_PATH ?= ../../out/llvm_x86_64_linux_work/Release+Asserts/bin
-  STDLIB_FLAGS = -stdlib=libc++ -I$(LIBCXX_INSTALL_PATH)/include/c++/v1
 endif
 
 # The x86-32-specific sandboxed translator directory.
 # It holds sandboxed versions of libraries and binaries.
 SB_LLVM_PATH ?= $(shell readlink -e \
         ../../out/sandboxed_translators_work/translator-i686/llvm-sb/Release)
 
 # NACL_ROOT is the root of the native client repository.
 NACL_ROOT ?= $(shell python -c "import sys; sys.path.insert(0, 'pydir'); \
         import utils; print utils.FindBaseNaCl()")
 
 # PNACL_TOOLCHAIN_ROOT is the location of the PNaCl toolchain.
 # This is used as the default root for finding binutils, libcxx, etc.
 PNACL_TOOLCHAIN_ROOT ?= $(shell readlink -e \
         $(NACL_ROOT)/toolchain/linux_x86/pnacl_newlib)
 
 # The location of PNaCl tools (e.g., binutils objdump, pnacl-clang++, etc.).
 PNACL_BIN_PATH ?= $(shell readlink -e $(PNACL_TOOLCHAIN_ROOT)/bin)
 
 # CLANG_PATH is the location of the clang compiler to use for building
 # the host binaries.
 CLANG_PATH ?= $(shell readlink -e \
         $(NACL_ROOT)/../third_party/llvm-build/Release+Asserts/bin)
 
 # LIBCXX_INSTALL_PATH is the directory where libc++ is located. It should
 # contain header files and corresponding libraries. This is used for
 # building the host binaries in conjuction with clang.
 LIBCXX_INSTALL_PATH ?= $(PNACL_TOOLCHAIN_ROOT)
+STDLIB_FLAGS := -stdlib=libc++ -I$(LIBCXX_INSTALL_PATH)/include/c++/v1
 
 HOST_ARCH ?= x86_64
 ifeq ($(HOST_ARCH),x86_64)
   HOST_FLAGS = -m64
 else
   ifeq ($(HOST_ARCH),x86)
     HOST_FLAGS = -m32
   endif
 endif
 
@@ skipping 251 matching lines @@
 bloat: make_symlink
         nm -C -S -l pnacl-sz | \
         bloat/bloat.py --nm-output=/dev/stdin syms > build/pnacl-sz.bloat.json
         @echo See Subzero size breakdown in bloat/pnacl-sz.bloat.html
 
 clean:
         rm -rf pnacl-sz *.o $(OBJDIR) $(SB_OBJDIR) build/pnacl-sz.bloat.json
 
 clean-all: clean
         rm -rf build/