Index: lib/sanitizer_common/symbolizer/scripts/ar_to_bc.sh
===================================================================
--- /dev/null
+++ lib/sanitizer_common/symbolizer/scripts/ar_to_bc.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+function usage() {
+  echo "Usage: $0 INPUT... OUTPUT"
+  exit 1
+}
+
+if [ "$#" -le 1 ]; then
+  usage
+fi
+
+AR=$(readlink -f $AR)
+LINK=$(readlink -f $LINK)
+
+INPUTS=
+OUTPUT=
+for ARG in $@; do
+  INPUTS="$INPUTS $OUTPUT"
+  OUTPUT=$(readlink -f $ARG)
+done
+
+echo Inputs: $INPUTS
+echo Output: $OUTPUT
+
+SCRATCH_DIR=$(mktemp -d)
+ln -s $INPUTS $SCRATCH_DIR/
+
+pushd $SCRATCH_DIR
+
+for INPUT in *; do
+  for OBJ in $($AR t $INPUT); do
+    $AR x $INPUT $OBJ
+    mv -f $OBJ $(basename $INPUT).$OBJ
+  done
+done
+
+$LINK *.o -o $OUTPUT
+
+rm -rf $SCRATCH_DIR
Index: lib/sanitizer_common/symbolizer/scripts/build_symbolizer.sh
===================================================================
--- lib/sanitizer_common/symbolizer/scripts/build_symbolizer.sh
+++ lib/sanitizer_common/symbolizer/scripts/build_symbolizer.sh
@@ -58,9 +58,9 @@
 CC=$CLANG_DIR/clang
 CXX=$CLANG_DIR/clang++
 TBLGEN=$CLANG_DIR/llvm-tblgen
-LINK=$CLANG_DIR/llvm-link
 OPT=$CLANG_DIR/opt
-AR=$CLANG_DIR/llvm-ar
+export AR=$CLANG_DIR/llvm-ar
+export LINK=$CLANG_DIR/llvm-link
 
 for F in $CC $CXX $TBLGEN $LINK $OPT $AR; do
   if [[ ! -x "$F" ]]; then
@@ -136,7 +136,15 @@
 mkdir ${SYMBOLIZER_BUILD}
 cd ${SYMBOLIZER_BUILD}
 
-for A in $LIBCXX_BUILD/lib/libc++.a \
+echo "Compiling..."
+SYMBOLIZER_FLAGS="$FLAGS -std=c++11 -I${LLVM_SRC}/include -I${LLVM_BUILD}/include -I${LIBCXX_BUILD}/include/c++/v1"
+$CXX $SYMBOLIZER_FLAGS ${SRC_DIR}/sanitizer_symbolize.cc ${SRC_DIR}/sanitizer_wrappers.cc -c
+$AR rc symbolizer.a sanitizer_symbolize.o sanitizer_wrappers.o
+
+SYMBOLIZER_API_LIST=__sanitizer_symbolize_code,__sanitizer_symbolize_data,__sanitizer_symbolize_flush,__sanitizer_symbolize_demangle
+
+# Merge all the object files together and copy the resulting library back.
+$SCRIPT_DIR/ar_to_bc.sh $LIBCXX_BUILD/lib/libc++.a \
          $LIBCXX_BUILD/lib/libc++abi.a \
          $LLVM_BUILD/lib/libLLVMSymbolize.a \
          $LLVM_BUILD/lib/libLLVMObject.a \
@@ -144,21 +152,10 @@
          $LLVM_BUILD/lib/libLLVMSupport.a \
          $LLVM_BUILD/lib/libLLVMDebugInfoPDB.a \
          $LLVM_BUILD/lib/libLLVMMC.a \
-         $ZLIB_BUILD/libz.a ; do
-  for O in $($AR t $A); do
-    $AR x $A $O
-    mv -f $O "$(basename $A).$O" # Rename to avoid collisions between libs.
-  done
-done
+         $ZLIB_BUILD/libz.a \
+         symbolizer.a \
+         all.bc
 
-echo "Compiling..."
-SYMBOLIZER_FLAGS="$FLAGS -std=c++11 -I${LLVM_SRC}/include -I${LLVM_BUILD}/include -I${LIBCXX_BUILD}/include/c++/v1"
-$CXX $SYMBOLIZER_FLAGS ${SRC_DIR}/sanitizer_symbolize.cc ${SRC_DIR}/sanitizer_wrappers.cc -c
-
-SYMBOLIZER_API_LIST=__sanitizer_symbolize_code,__sanitizer_symbolize_data,__sanitizer_symbolize_flush,__sanitizer_symbolize_demangle
-
-# Merge all the object files together and copy the resulting library back.
-$LINK *.o -o all.bc
 echo "Optimizing..."
 $OPT -internalize -internalize-public-api-list=${SYMBOLIZER_API_LIST} all.bc -o opt.bc
 $CC $FLAGS -fno-lto -c opt.bc -o symbolizer.o
Index: lib/xray/xray_inmemory_log.cc
===================================================================
--- lib/xray/xray_inmemory_log.cc
+++ lib/xray/xray_inmemory_log.cc
@@ -87,7 +87,7 @@
   Header.Version = 1;
   Header.Type = FileTypes::NAIVE_LOG;
   Header.CycleFrequency =
-      TSCFrequency == -1 ? 0 : static_cast<uint64_t>(TSCFrequency);
+      TSCFrequency == static_cast<uint64_t>(-1) ? 0 : static_cast<uint64_t>(TSCFrequency);
 
   // FIXME: Actually check whether we have 'constant_tsc' and 'nonstop_tsc'
   // before setting the values in the header.