76 lines
2.5 KiB
Bash
Executable file
76 lines
2.5 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This script will check out llvm and clang into third_party/llvm and build it.
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# Do NOT CHANGE this if you don't know what you're doing -- see
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# https://code.google.com/p/chromium/wiki/UpdatingClang
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# Reverting problematic clang rolls is safe, though.
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CLANG_REVISION=261368
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# This is incremented when pushing a new build of Clang at the same revision.
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CLANG_SUB_REVISION=1
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PACKAGE_VERSION="${CLANG_REVISION}-${CLANG_SUB_REVISION}"
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THIS_DIR="$(dirname "${0}")"
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LLVM_DIR="${THIS_DIR}/../vendor/llvm"
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LLVM_BUILD_DIR="${LLVM_DIR}/../llvm-build/Release+Asserts"
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STAMP_FILE="${LLVM_DIR}/../llvm-build/cr_build_revision"
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# ${A:-a} returns $A if it's set, a else.
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LLVM_REPO_URL=${LLVM_URL:-https://llvm.org/svn/llvm-project}
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CDS_URL=https://commondatastorage.googleapis.com/chromium-browser-clang
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# Die if any command dies, error on undefined variable expansions.
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set -eu
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OS="$(uname -s)"
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# Check if there's anything to be done, exit early if not.
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if [[ -f "${STAMP_FILE}" ]]; then
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PREVIOUSLY_BUILT_REVISON=$(cat "${STAMP_FILE}")
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if [[ "${PREVIOUSLY_BUILT_REVISON}" = "${PACKAGE_VERSION}" ]]; then
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echo "Clang already at ${PACKAGE_VERSION}"
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exit 0
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fi
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fi
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# To always force a new build if someone interrupts their build half way.
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rm -f "${STAMP_FILE}"
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# Check if there's a prebuilt binary and if so just fetch that. That's faster,
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# and goma relies on having matching binary hashes on client and server too.
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CDS_FILE="clang-${PACKAGE_VERSION}.tgz"
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CDS_OUT_DIR=$(mktemp -d -t clang_download.XXXXXX)
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CDS_OUTPUT="${CDS_OUT_DIR}/${CDS_FILE}"
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if [ "${OS}" = "Linux" ]; then
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CDS_FULL_URL="${CDS_URL}/Linux_x64/${CDS_FILE}"
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elif [ "${OS}" = "Darwin" ]; then
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CDS_FULL_URL="${CDS_URL}/Mac/${CDS_FILE}"
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fi
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echo Trying to download prebuilt clang
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if which curl > /dev/null; then
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curl -L --fail "${CDS_FULL_URL}" -o "${CDS_OUTPUT}" || \
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rm -rf "${CDS_OUT_DIR}"
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elif which wget > /dev/null; then
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wget "${CDS_FULL_URL}" -O "${CDS_OUTPUT}" || rm -rf "${CDS_OUT_DIR}"
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else
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echo "Neither curl nor wget found. Please install one of these."
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exit 1
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fi
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if [ -f "${CDS_OUTPUT}" ]; then
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rm -rf "${LLVM_BUILD_DIR}"
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mkdir -p "${LLVM_BUILD_DIR}"
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tar -xzf "${CDS_OUTPUT}" -C "${LLVM_BUILD_DIR}"
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echo clang "${PACKAGE_VERSION}" unpacked
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echo "${PACKAGE_VERSION}" > "${STAMP_FILE}"
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rm -rf "${CDS_OUT_DIR}"
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exit 0
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else
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echo Did not find prebuilt clang "${PACKAGE_VERSION}", building
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fi
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