[libcxx] Add a script to run CI on MacOS

CI systems like Green Dragon should use this script so as to make
reproducing errors easy locally.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@350740 91177308-0d34-0410-b5e6-96231b3b80d8

utils/ci/macos-trunk.sh

@@ -0,0 +1,153 @@
+#!/usr/bin/env bash
+
+set -ue
+
+function usage() {
+  cat <<EOM
+$(basename ${0}) [-h|--help] --libcxx-root <LIBCXX-ROOT> --libcxxabi-root <LIBCXXABI-ROOT> --std <STD> --arch <ARCHITECTURE> [--lit-args <ARGS...>]
+
+This script is used to continually test libc++ and libc++abi trunk on MacOS.
+
+  --libcxx-root     Full path to the root of the libc++ repository to test.
+  --libcxxabi-root  Full path to the root of the libc++abi repository to test.
+  --std             Version of the C++ Standard to run the tests under (c++03, c++11, etc..).
+  --arch            Architecture to build the tests for (32, 64).
+  [--lit-args]      Additional arguments to pass to lit (optional). If there are multiple arguments, quote them to pass them as a single argument to this script.
+  [--no-cleanup]    Do not cleanup the temporary directory that was used for testing at the end. This can be useful to debug failures. Make sure to clean up manually after.
+  [-h, --help]      Print this help.
+EOM
+}
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --libcxx-root)
+    LIBCXX_ROOT="${2}"
+    if [[ ! -e "${LIBCXX_ROOT}" ]]; then
+      echo "--libcxx-root '${LIBCXX_ROOT}' is not a valid directory"
+      usage
+      exit 1
+    fi
+    shift; shift
+    ;;
+    --libcxxabi-root)
+    LIBCXXABI_ROOT="${2}"
+    if [[ ! -e "${LIBCXXABI_ROOT}" ]]; then
+      echo "--libcxxabi-root '${LIBCXXABI_ROOT}' is not a valid directory"
+      usage
+      exit 1
+    fi
+    shift; shift
+    ;;
+    --std)
+    STD="${2}"
+    shift; shift
+    ;;
+    --arch)
+    ARCH="${2}"
+    shift; shift
+    ;;
+    --lit-args)
+    ADDITIONAL_LIT_ARGS="${2}"
+    shift; shift
+    ;;
+    --no-cleanup)
+    NO_CLEANUP=""
+    shift
+    ;;
+    -h|--help)
+    usage
+    exit 0
+    ;;
+    *)
+    echo "${1} is not a supported argument"
+    usage
+    exit 1
+    ;;
+  esac
+done
+
+if [[ -z ${LIBCXX_ROOT+x} ]]; then echo "--libcxx-root is a required parameter"; usage; exit 1; fi
+if [[ -z ${LIBCXXABI_ROOT+x} ]]; then echo "--libcxxabi-root is a required parameter"; usage; exit 1; fi
+if [[ -z ${STD+x} ]]; then echo "--std is a required parameter"; usage; exit 1; fi
+if [[ -z ${ARCH+x} ]]; then echo "--arch is a required parameter"; usage; exit 1; fi
+if [[ -z ${ADDITIONAL_LIT_ARGS+x} ]]; then ADDITIONAL_LIT_ARGS=""; fi
+
+
+TEMP_DIR="$(mktemp -d)"
+echo "Created temporary directory ${TEMP_DIR}"
+function cleanup {
+  if [[ -z ${NO_CLEANUP+x} ]]; then
+    echo "Removing temporary directory ${TEMP_DIR}"
+    rm -rf "${TEMP_DIR}"
+  else
+    echo "Temporary directory is at '${TEMP_DIR}', make sure to clean it up yourself"
+  fi
+}
+trap cleanup EXIT
+
+
+LLVM_ROOT="${TEMP_DIR}/llvm"
+LIBCXX_BUILD_DIR="${TEMP_DIR}/libcxx-build"
+LIBCXX_INSTALL_DIR="${TEMP_DIR}/libcxx-install"
+LIBCXXABI_BUILD_DIR="${TEMP_DIR}/libcxxabi-build"
+LIBCXXABI_INSTALL_DIR="${TEMP_DIR}/libcxxabi-install"
+
+LLVM_TARBALL_URL="https://github.com/llvm-mirror/llvm/archive/master.tar.gz"
+export CC="$(xcrun --find clang)"
+export CXX="$(xcrun --find clang++)"
+
+
+echo "@@@ Downloading LLVM tarball of master (only used for CMake configuration) @@@"
+mkdir "${LLVM_ROOT}"
+curl -L "${LLVM_TARBALL_URL}" | tar -xz --strip-components=1 -C "${LLVM_ROOT}"
+echo "@@@@@@"
+
+
+echo "@@@ Setting up LIT flags @@@"
+LIT_FLAGS="-sv --param=std=${STD} ${ADDITIONAL_LIT_ARGS}"
+if [[ "${ARCH}" == "32" ]]; then
+  LIT_FLAGS+=" --param=enable_32bit=true"
+fi
+echo "@@@@@@"
+
+
+echo "@@@ Configuring CMake for libc++ @@@"
+mkdir -p "${LIBCXX_BUILD_DIR}"
+(cd "${LIBCXX_BUILD_DIR}" &&
+  xcrun cmake "${LIBCXX_ROOT}" -GNinja \
+    -DLLVM_PATH="${LLVM_ROOT}" \
+    -DCMAKE_INSTALL_PREFIX="${LIBCXX_INSTALL_DIR}" \
+    -DLLVM_LIT_ARGS="${LIT_FLAGS}" \
+    -DCMAKE_OSX_ARCHITECTURES="i386;x86_64" # Build a universal dylib
+)
+echo "@@@@@@"
+
+
+echo "@@@ Configuring CMake for libc++abi @@@"
+mkdir -p "${LIBCXXABI_BUILD_DIR}"
+(cd "${LIBCXXABI_BUILD_DIR}" &&
+  xcrun cmake "${LIBCXXABI_ROOT}" -GNinja \
+    -DLIBCXXABI_LIBCXX_PATH="${LIBCXX_ROOT}" \
+    -DLLVM_PATH="${LLVM_ROOT}" \
+    -DCMAKE_INSTALL_PREFIX="${LIBCXXABI_INSTALL_DIR}" \
+    -DLLVM_LIT_ARGS="${LIT_FLAGS}" \
+    -DCMAKE_OSX_ARCHITECTURES="i386;x86_64" # Build a universal dylib
+)
+echo "@@@@@@"
+
+
+echo "@@@ Building libc++.dylib and libc++abi.dylib from sources (just to make sure it works) @@@"
+ninja -C "${LIBCXX_BUILD_DIR}" install-cxx
+ninja -C "${LIBCXXABI_BUILD_DIR}" install-cxxabi
+echo "@@@@@@"
+
+
+echo "@@@ Running tests for libc++ @@@"
+# TODO: We should run check-cxx-abilist too
+ninja -C "${LIBCXX_BUILD_DIR}" check-cxx
+echo "@@@@@@"
+
+
+echo "@@@ Running tests for libc++abi @@@"
+ninja -C "${LIBCXXABI_BUILD_DIR}" check-cxxabi
+echo "@@@@@@"