Subzero: Fix new issues after the LLVM 3.5 merge.

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> ...
 #
 
 # 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/
@@ skipping 56 matching lines @@
 $(info -----------------------------------------------)
 $(info Using LLVM_SRC_PATH = $(LLVM_SRC_PATH))
 $(info Using LLVM_BIN_PATH = $(LLVM_BIN_PATH))
 $(info Using LIBCXX_INSTALL_PATH = $(LIBCXX_INSTALL_PATH))
 $(info Using CLANG_PATH = $(CLANG_PATH))
 $(info Using HOST_ARCH     = $(HOST_ARCH))
 $(info -----------------------------------------------)
 
 LLVM_CXXFLAGS := `$(LLVM_BIN_PATH)/llvm-config --cxxflags`
 LLVM_LDFLAGS := `$(LLVM_BIN_PATH)/llvm-config --libs` \
                 `$(LLVM_BIN_PATH)/llvm-config --ldflags`

[jvoung (off chromium), 2014/11/24 17:24:00]

I think what happened with lpthread is that `llvm-config --ldflags` used to have
that, but now it's moved to `llvm-config --system-libs`

[Jim Stichnoth, 2014/11/24 22:20:03]

Cool, thanks.  I added --system-libs here.

 
 # It's recommended that CXX matches the compiler you used to build LLVM itself.
 CCACHE := `command -v ccache`
 CXX := CCACHE_CPP2=yes $(CCACHE) $(CLANG_PATH)/clang++
 
 CXXFLAGS := $(LLVM_CXXFLAGS) -std=c++11 -Wall -Wextra -Werror -fno-rtti \
         -fno-exceptions $(OPTLEVEL) $(ASSERTIONS) $(CXX_DEFINES) -g \
         $(HOST_FLAGS) -Wno-error=unused-parameter \
         -I$(LIBCXX_INSTALL_PATH)/include/c++/v1
 LDFLAGS := $(HOST_FLAGS) -L$(LIBCXX_INSTALL_PATH)/lib
@@ skipping 38 matching lines @@
         rm -rf llvm2ice
         ln -s $(OBJDIR)/llvm2ice
         @echo "Build Attributes:"
         @$(OBJDIR)/llvm2ice --build-atts
 
 .PHONY: all make_symlink
 
 # TODO(kschimpf): Fix python scripts to directly get build attributes
 # rather than generating $(OBJDIR)/llvm2ice.build_atts.
 $(OBJDIR)/llvm2ice: $(OBJS)
-        $(CXX) $(LDFLAGS) -o $@ $^ $(LLVM_LDFLAGS) -ldl \
+        $(CXX) $(LDFLAGS) -o $@ $^ $(LLVM_LDFLAGS) -ldl -lpthread \
                -Wl,-rpath=$(abspath $(LIBCXX_INSTALL_PATH)/lib)
 
 # TODO: Be more precise than "*.h" here and elsewhere.
 $(OBJS): $(OBJDIR)/%.o: src/%.cpp src/*.h src/*.def
         $(CXX) -c $(CXXFLAGS) $< -o $@
 
 $(OBJS): | $(OBJDIR)
 
 $(OBJDIR):
         @mkdir -p $@
@@ skipping 27 matching lines @@
 endif
 format-diff:
         git diff -U0 `git merge-base HEAD master` | \
         $(CLANG_FORMAT_DIFF) -p1 -style=LLVM -i
 
 clean:
         rm -rf llvm2ice *.o $(OBJDIR)
 
 clean-all: clean
         rm -rf build/