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1#!/usr/bin/env bash
2
3set -ue
4
5function usage() {
6  cat <<EOM
7$(basename ${0}) [-h|--help] --libcxx-root <LIBCXX-ROOT> --libcxxabi-root <LIBCXXABI-ROOT> --std <STD> --arch <ARCHITECTURE> --deployment-target <TARGET> --sdk-version <SDK-VERSION> [--lit-args <ARGS...>]
8
9This script is used to continually test the back-deployment use case of libc++ and libc++abi on MacOS.
10
11  --libcxx-root       Full path to the root of the libc++ repository to test.
12  --libcxxabi-root    Full path to the root of the libc++abi repository to test.
13  --std               Version of the C++ Standard to run the tests under (c++03, c++11, etc..).
14  --arch              Architecture to build the tests for (32, 64).
15  --deployment-target The deployment target to run the tests for. This should be a version number of MacOS (e.g. 10.12). All MacOS versions until and including 10.7 are supported.
16  --sdk-version       The version of the SDK to test with. This should be a version number of MacOS (e.g. 10.12). We'll link against the libc++ dylib in that SDK, but we'll run against the one on the given deployment target.
17  [--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.
18  [--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.
19  [-h, --help]        Print this help.
20EOM
21}
22
23while [[ $# -gt 0 ]]; do
24  case "$1" in
25    --libcxx-root)
26    LIBCXX_ROOT="${2}"
27    if [[ ! -d "${LIBCXX_ROOT}" ]]; then
28      echo "--libcxx-root '${LIBCXX_ROOT}' is not a valid directory"
29      usage
30      exit 1
31    fi
32    shift; shift
33    ;;
34    --libcxxabi-root)
35    LIBCXXABI_ROOT="${2}"
36    if [[ ! -d "${LIBCXXABI_ROOT}" ]]; then
37      echo "--libcxxabi-root '${LIBCXXABI_ROOT}' is not a valid directory"
38      usage
39      exit 1
40    fi
41    shift; shift
42    ;;
43    --std)
44    STD="${2}"
45    shift; shift
46    ;;
47    --arch)
48    ARCH="${2}"
49    shift; shift
50    ;;
51    --deployment-target)
52    DEPLOYMENT_TARGET="${2}"
53    shift; shift
54    ;;
55    --sdk-version)
56    MACOS_SDK_VERSION="${2}"
57    shift; shift
58    ;;
59    --lit-args)
60    ADDITIONAL_LIT_ARGS="${2}"
61    shift; shift
62    ;;
63    --no-cleanup)
64    NO_CLEANUP=""
65    shift
66    ;;
67    -h|--help)
68    usage
69    exit 0
70    ;;
71    *)
72    echo "${1} is not a supported argument"
73    usage
74    exit 1
75    ;;
76  esac
77done
78
79if [[ -z ${LIBCXX_ROOT+x} ]]; then echo "--libcxx-root is a required parameter"; usage; exit 1; fi
80if [[ -z ${LIBCXXABI_ROOT+x} ]]; then echo "--libcxxabi-root is a required parameter"; usage; exit 1; fi
81if [[ -z ${STD+x} ]]; then echo "--std is a required parameter"; usage; exit 1; fi
82if [[ -z ${ARCH+x} ]]; then echo "--arch is a required parameter"; usage; exit 1; fi
83if [[ -z ${DEPLOYMENT_TARGET+x} ]]; then echo "--deployment-target is a required parameter"; usage; exit 1; fi
84if [[ -z ${MACOS_SDK_VERSION+x} ]]; then echo "--sdk-version is a required parameter"; usage; exit 1; fi
85if [[ -z ${ADDITIONAL_LIT_ARGS+x} ]]; then ADDITIONAL_LIT_ARGS=""; fi
86
87
88TEMP_DIR="$(mktemp -d)"
89echo "Created temporary directory ${TEMP_DIR}"
90function cleanup {
91  if [[ -z ${NO_CLEANUP+x} ]]; then
92    echo "Removing temporary directory ${TEMP_DIR}"
93    rm -rf "${TEMP_DIR}"
94  else
95    echo "Temporary directory is at '${TEMP_DIR}', make sure to clean it up yourself"
96  fi
97}
98trap cleanup EXIT
99
100
101LLVM_ROOT="${TEMP_DIR}/llvm"
102LIBCXX_BUILD_DIR="${TEMP_DIR}/libcxx-build"
103LIBCXX_INSTALL_DIR="${TEMP_DIR}/libcxx-install"
104LIBCXXABI_BUILD_DIR="${TEMP_DIR}/libcxxabi-build"
105LIBCXXABI_INSTALL_DIR="${TEMP_DIR}/libcxxabi-install"
106
107PREVIOUS_DYLIBS_URL="http://lab.llvm.org:8080/roots/libcxx-roots.tar.gz"
108LLVM_TARBALL_URL="https://github.com/llvm-mirror/llvm/archive/master.tar.gz"
109export CC="$(xcrun --find clang)"
110export CXX="$(xcrun --find clang++)"
111
112
113echo "@@@ Downloading LLVM tarball of master (only used for CMake configuration) @@@"
114mkdir "${LLVM_ROOT}"
115curl -L "${LLVM_TARBALL_URL}" | tar -xz --strip-components=1 -C "${LLVM_ROOT}"
116echo "@@@@@@"
117
118
119echo "@@@ Configuring architecture-related stuff @@@"
120if [[ "${ARCH}" == "64" ]]; then CMAKE_ARCH_STRING="x86_64"; else CMAKE_ARCH_STRING="i386"; fi
121if [[ "${ARCH}" == "64" ]]; then LIT_ARCH_STRING="";         else LIT_ARCH_STRING="--param=enable_32bit=true"; fi
122echo "@@@@@@"
123
124
125echo "@@@ Configuring CMake for libc++ @@@"
126mkdir -p "${LIBCXX_BUILD_DIR}"
127(cd "${LIBCXX_BUILD_DIR}" &&
128  xcrun cmake "${LIBCXX_ROOT}" -GNinja \
129    -DLLVM_PATH="${LLVM_ROOT}" \
130    -DCMAKE_INSTALL_PREFIX="${LIBCXX_INSTALL_DIR}" \
131    -DCMAKE_OSX_ARCHITECTURES="${CMAKE_ARCH_STRING}"
132)
133echo "@@@@@@"
134
135
136echo "@@@ Configuring CMake for libc++abi @@@"
137mkdir -p "${LIBCXXABI_BUILD_DIR}"
138(cd "${LIBCXXABI_BUILD_DIR}" &&
139  xcrun cmake "${LIBCXXABI_ROOT}" -GNinja \
140    -DLIBCXXABI_LIBCXX_PATH="${LIBCXX_ROOT}" \
141    -DLLVM_PATH="${LLVM_ROOT}" \
142    -DCMAKE_INSTALL_PREFIX="${LIBCXXABI_INSTALL_DIR}" \
143    -DCMAKE_OSX_ARCHITECTURES="${CMAKE_ARCH_STRING}"
144)
145echo "@@@@@@"
146
147
148echo "@@@ Installing the latest libc++ headers @@@"
149ninja -C "${LIBCXX_BUILD_DIR}" install-cxx-headers
150echo "@@@@@@"
151
152
153echo "@@@ Downloading dylibs for older deployment targets @@@"
154# TODO: The tarball should contain libc++abi.dylib too, we shouldn't be relying on the system's
155# TODO: We should also link against the libc++abi.dylib that was shipped in the SDK
156PREVIOUS_DYLIBS_DIR="${TEMP_DIR}/libcxx-dylibs"
157mkdir "${PREVIOUS_DYLIBS_DIR}"
158curl "${PREVIOUS_DYLIBS_URL}" | tar -xz --strip-components=1 -C "${PREVIOUS_DYLIBS_DIR}"
159LIBCXX_ON_DEPLOYMENT_TARGET="${PREVIOUS_DYLIBS_DIR}/macOS/${DEPLOYMENT_TARGET}/libc++.dylib"
160LIBCXXABI_ON_DEPLOYMENT_TARGET="/usr/lib/libc++abi.dylib"
161LIBCXX_IN_SDK="${PREVIOUS_DYLIBS_DIR}/macOS/${MACOS_SDK_VERSION}/libc++.dylib"
162echo "@@@@@@"
163
164
165# TODO: We need to also run the tests for libc++abi.
166# TODO: Make sure lit will actually run against the libc++abi we specified
167echo "@@@ Running tests for libc++ @@@"
168"${LIBCXX_BUILD_DIR}/bin/llvm-lit" -sv "${LIBCXX_ROOT}/test" \
169                                   --param=enable_experimental=false \
170                                   --param=enable_filesystem=false \
171                                   ${LIT_ARCH_STRING} \
172                                   --param=cxx_under_test="${CXX}" \
173                                   --param=cxx_headers="${LIBCXX_INSTALL_DIR}/include/c++/v1" \
174                                   --param=std="${STD}" \
175                                   --param=platform="macosx${DEPLOYMENT_TARGET}" \
176                                   --param=cxx_runtime_root="$(dirname "${LIBCXX_ON_DEPLOYMENT_TARGET}")" \
177                                   --param=abi_library_path="$(dirname "${LIBCXXABI_ON_DEPLOYMENT_TARGET}")" \
178                                   --param=use_system_cxx_lib="$(dirname "${LIBCXX_IN_SDK}")" \
179                                   ${ADDITIONAL_LIT_ARGS}
180echo "@@@@@@"
181