mac: Pull a prebuilt libc++-static.a.

third_party/libc++-static/build.sh

+#!/bin/bash
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+set -eux
+
+REV=245965
+DIR=$(mktemp -d -t libcpp)
+
+THIS_DIR="${PWD}/$(dirname "${0}")"
+
+# TODO(thakis): Figure out why our clang complains about visibility and
+# redeclarations.
+#CXX="$THIS_DIR/../llvm-build/Release+Asserts/bin/clang++"
+CXX=c++
+
+
+FLAGS="-nostdinc++ -O3 -std=c++11 -fstrict-aliasing -fvisibility=hidden -fvisibility-inlines-hidden -mmacosx-version-min=10.6 -arch i386 -arch x86_64 -isysroot $(xcrun -show-sdk-path)"
+
+pushd "${DIR}"
+
+svn co --force https://llvm.org/svn/llvm-project/libcxx/trunk@$REV libcxx
+svn co --force https://llvm.org/svn/llvm-project/libcxxabi/trunk@$REV libcxxabi
+
+mkdir libcxxbuild
+cd libcxxbuild
+
+mkdir libcxx
+pushd libcxx
+sed -i '' 's/"default"/"hidden"/g' ../../libcxx/include/__config
+"$CXX" -c -I../../libcxx/include/ ../../libcxx/src/*.cpp $FLAGS
+popd
+
+mkdir libcxxabi
+pushd libcxxabi
+sed -i '' 's/"default"/"hidden"/g' ../../libcxxabi/src/*
+sed -i '' 's/push(default)/push(hidden)/g' ../../libcxxabi/src/*
+
+# Let the default handler not depend on __cxa_demangle, this saves 0.5MB binary
+# size in each binary linking against libc++-static.a
+patch -d ../../libcxxabi -p0 < "${THIS_DIR}/libcxxabi.patch"
+
+"$CXX" -c -I../../libcxx/include/ -I../../libcxxabi/include ../../libcxxabi/src/*.cpp $FLAGS
+popd
+
+libtool -static -o libc++-static.a libcxx*/*.o
+
+cp libc++-static.a "${THIS_DIR}"
+upload_to_google_storage.py -b chromium-libcpp "${THIS_DIR}/libc++-static.a"
+
+popd
+rm -rf "${DIR}"