allow ref on locals, globals, and statics #25041
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# Github action to test for C++ interoperability | |
# | |
# Most tests in the test-suite run on the CI when it comes to cross-platform testing. | |
# However, the dlang auto-tester uses somewhat old host C/C++ compiler. | |
# This is good for testing compatibility with e.g. LTS distributions, | |
# but becomes problematic when we want to test more cutting-edge features, | |
# such as newer C++ standards (C++17, C++20, etc...). | |
# | |
# This is the reason why we have this action: we have full control over the toolchain, | |
# and it is cross platform. The supported platforms are whatever Github Actions support, | |
# which is usually whatever the vendor (Canonical, Apple, Microsoft) supports. | |
# | |
# Notes: | |
# - Some patterns used here have been developed through a lot of trial and error | |
# In particular, the build matrix approach, with two rows, and a large list of | |
# excludes, ended up being the most useful approach. | |
# - Additionally, the check for the compiler version will save you a lot of trouble. | |
# Having the wrong path added to the $PATH and ending up with the wrong compiler | |
# being used can make debugging very painful. | |
# - Try to use the native Github action syntax (${{ expression }}) when possible, | |
# as they are substituted with their value in the logs, unlike env variable. | |
# For example use `${{ github.workspace }}` over `${GITHUB_WORKSPACE}` | |
# | |
# TODO: | |
# - Implement Windows + MSVC support | |
# - Implement Windows + clang support | |
# - Implement Linux + Clang 32 bits support (if possible) | |
name: C++ interop tests | |
# Only triggers on pushes to master & stable, as well as PR to master and stable | |
# Sometimes reverts appear in the upstream repository (e.g. when the revert button | |
# is clicked by a contributor with commit access), this should be tested as PR). | |
# | |
# Also note that Github actions does not retrigger on target branch changes, | |
# hence the check on push. | |
on: | |
pull_request: | |
branches: | |
- master | |
- stable | |
push: | |
branches: | |
- master | |
- stable | |
# Use this branch name in your fork to test changes | |
- github-actions | |
jobs: | |
main: | |
name: Run | |
if: github.repository == 'dlang/dmd' | |
strategy: | |
# Since those tests takes very little time, don't use `fail-fast`. | |
# If runtime expand, we might want to comment this out, | |
# as most failing PRs do so because they don't compile / something is broken, | |
# very few PRs actually benefit from this. | |
fail-fast: false | |
matrix: | |
os: [ macOS-12, ubuntu-20.04, windows-2019 ] | |
target: [ | |
# Versions of clang earlier than 11 are not available on 20.04, but are on macOS-12 | |
clang-13.0.0, clang-12.0.0, clang-11.0.0, clang-10.0.0, clang-9.0.0, clang-8.0.0, | |
# For g++, we test the oldest compiler on Ubuntu 20.04, which is GCC-9 | |
g++-11, g++-10, g++-9, | |
# Finally, we test MSVC 2013 - 2019 | |
msvc-2019, msvc-2017, msvc-2015, msvc-2013 | |
] | |
# Exclude target compilers not supported by the host | |
# Note: Pattern matching is not supported so this list is quite long, | |
# and brittle, as changing an msvc entry would break on OSX, for example. | |
exclude: | |
# 20.04 only has g++-9 through to 11, and clang-11.0.0 through to 13.0.0 | |
- { os: ubuntu-20.04, target: clang-10.0.0 } | |
- { os: ubuntu-20.04, target: clang-9.0.0 } | |
- { os: ubuntu-20.04, target: clang-8.0.0 } | |
- { os: ubuntu-20.04, target: msvc-2019 } | |
- { os: ubuntu-20.04, target: msvc-2017 } | |
- { os: ubuntu-20.04, target: msvc-2015 } | |
- { os: ubuntu-20.04, target: msvc-2013 } | |
# OSX only supports clang | |
- { os: macOS-12, target: g++-11 } | |
- { os: macOS-12, target: g++-10 } | |
- { os: macOS-12, target: g++-9 } | |
- { os: macOS-12, target: msvc-2019 } | |
- { os: macOS-12, target: msvc-2017 } | |
- { os: macOS-12, target: msvc-2015 } | |
- { os: macOS-12, target: msvc-2013 } | |
# We don't test g++ on Windows as DMD only mangles for MSVC | |
- { os: windows-2019, target: g++-11 } | |
- { os: windows-2019, target: g++-10 } | |
- { os: windows-2019, target: g++-9 } | |
# TODO: Implement support for clang and MSVC2017 on Windows | |
# Currently those are still being run by the auto-tester | |
# We can hardly test below 2017 in the CI because there's | |
# no way to install it via command line | |
# (TODO: Test with 2015 as the blog post is slightly ambiguous) | |
# https://devblogs.microsoft.com/cppblog/introducing-the-visual-studio-build-tools/ | |
- { os: windows-2019, target: msvc-2017 } | |
- { os: windows-2019, target: msvc-2015 } | |
- { os: windows-2019, target: msvc-2013 } | |
- { os: windows-2019, target: clang-13.0.0 } | |
- { os: windows-2019, target: clang-12.0.0 } | |
- { os: windows-2019, target: clang-11.0.0 } | |
- { os: windows-2019, target: clang-10.0.0 } | |
- { os: windows-2019, target: clang-9.0.0 } | |
- { os: windows-2019, target: clang-8.0.0 } | |
# This sets the configuration for each jobs | |
# There's a bit of duplication involved (e.g. breaking down g++-9.3 into 2 strings), | |
# but some items are unique (e.g. clang-9.0.0 and 4.0.1 have differences in their naming). | |
include: | |
# Clang boilerplate | |
- { target: clang-13.0.0, compiler: clang, cxx-version: 13.0.0 } | |
- { target: clang-12.0.0, compiler: clang, cxx-version: 12.0.0 } | |
- { target: clang-11.0.0, compiler: clang, cxx-version: 11.0.0 } | |
- { target: clang-10.0.0, compiler: clang, cxx-version: 10.0.0 } | |
- { target: clang-9.0.0, compiler: clang, cxx-version: 9.0.0 } | |
- { target: clang-8.0.0, compiler: clang, cxx-version: 8.0.0 } | |
# g++ boilerplace | |
- { target: g++-11, compiler: g++, cxx-version: 11.2.0, major: 11 } | |
- { target: g++-10, compiler: g++, cxx-version: 10.3.0, major: 10 } | |
- { target: g++-9, compiler: g++, cxx-version: 9.4.0, major: 9 } | |
# Platform boilerplate | |
- { os: ubuntu-20.04, arch: x86_64-linux-gnu-ubuntu-20.04 } | |
- { os: macOS-12, arch: x86_64-apple-darwin } | |
# Clang 9.0.0 have a different arch for OSX | |
- { os: macOS-12, target: clang-9.0.0, arch: x86_64-darwin-apple } | |
# Those targets will generate artifacts that can be used by other testers | |
- { storeArtifacts: false } | |
- { os: ubuntu-20.04, target: g++-9, storeArtifacts: true } | |
- { os: macOS-12, target: clang-9.0.0, storeArtifacts: true } | |
#- { os: windows-2019, target: msvc-2019, storeArtifacts: true } | |
# We're using the latest available images at the time of this commit. | |
# Using a specific version for reproductibility. | |
# Feel free to update when a new release has matured. | |
runs-on: ${{ matrix.os }} | |
steps: | |
- name: Set environment variable N (parallelism) | |
shell: bash | |
run: echo "N=$(${{ runner.os == 'macOS' && 'sysctl -n hw.logicalcpu' || 'nproc' }})" >> $GITHUB_ENV | |
######################################## | |
# Setting up the host D compiler # | |
######################################## | |
- name: Prepare compiler | |
uses: dlang-community/setup-dlang@v1 | |
############################################## | |
# Find out which branch we need to check out # | |
############################################## | |
- name: Determine base branch | |
id: base_branch | |
shell: bash | |
run: | | |
# For pull requests, base_ref will not be empty | |
if [ ! -z ${{ github.base_ref }} ]; then | |
echo "branch=${{ github.base_ref }}" >> $GITHUB_OUTPUT | |
# Otherwise, use whatever ref we have: | |
# For branches this in the format 'refs/heads/<branch_name>', | |
# and for tags it is refs/tags/<tag_name>. | |
else | |
echo "branch=${{ github.ref }}" >> $GITHUB_OUTPUT | |
fi | |
######################################### | |
# Checking out up DMD, druntime, Phobos # | |
######################################### | |
- name: Checkout DMD | |
uses: actions/checkout@v4 | |
with: | |
path: dmd | |
persist-credentials: false | |
- name: Checkout Phobos | |
uses: actions/checkout@v4 | |
with: | |
path: phobos | |
repository: dlang/phobos | |
ref: ${{ steps.base_branch.outputs.branch }} | |
persist-credentials: false | |
######################################## | |
# Setting up the host C++ compiler # | |
######################################## | |
- name: '[Posix] Load cached clang' | |
id: cache-clang | |
if: matrix.compiler == 'clang' && runner.os != 'Windows' | |
uses: actions/cache@v4 | |
with: | |
path: ${{ github.workspace }}/clang+llvm-${{ matrix.cxx-version }}-${{ matrix.arch }}/ | |
key: ${{ matrix.cxx-version }}-${{ matrix.arch }}-2022-09-25-2121 | |
- name: '[Posix] Setting up clang ${{ matrix.cxx-version }}' | |
if: matrix.compiler == 'clang' && runner.os != 'Windows' && steps.cache-clang.outputs.cache-hit != 'true' | |
run: | | |
if [ "${{ matrix.cxx-version }}" == "8.0.0" -o "${{ matrix.cxx-version }}" == "9.0.0" ]; then | |
wget --quiet --directory-prefix=${{ github.workspace }} https://releases.llvm.org/${{ matrix.cxx-version }}/clang+llvm-${{ matrix.cxx-version }}-${{ matrix.arch }}.tar.xz | |
else | |
wget --quiet --directory-prefix=${{ github.workspace }} https://github.com/llvm/llvm-project/releases/download/llvmorg-${{ matrix.cxx-version }}/clang+llvm-${{ matrix.cxx-version }}-${{ matrix.arch }}.tar.xz | |
fi | |
tar -x -C ${{ github.workspace }} -f ${{ github.workspace }}/clang+llvm-${{ matrix.cxx-version }}-${{ matrix.arch }}.tar.xz | |
TMP_CC='${{ github.workspace }}/clang+llvm-${{ matrix.cxx-version }}-${{ matrix.arch }}/bin/clang' | |
# On OSX, the system header are installed via `xcode-select` and not distributed with clang | |
# Since some part of the testsuite rely on CC and CXX being only a binary (not a command), | |
# and config files where only introduced from 6.0.0, use a wrapper script. | |
if [ "${{ matrix.os }}" == "macOS-12" ]; then | |
# Note: heredoc shouldn't be indented | |
cat << 'EOF' > ${TMP_CC}-wrapper | |
#!/bin/bash | |
# Note: We need to use this because github.workspace is not stable | |
SCRIPT_FULL_PATH=$(dirname "$0") | |
${SCRIPT_FULL_PATH}/clang -isystem /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/ $@ | |
EOF | |
# Invoking clang with `clang++` will link the C++ standard library | |
# Make sure we got two separate wrapper for this | |
cat << 'EOF' > ${TMP_CC}++-wrapper | |
#!/bin/bash | |
SCRIPT_FULL_PATH=$(dirname "$0") | |
${SCRIPT_FULL_PATH}/clang++ -isystem /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/ $@ | |
EOF | |
chmod +x ${TMP_CC}-wrapper ${TMP_CC}++-wrapper | |
fi | |
- name: '[Posix] Setup environment variables' | |
if: matrix.compiler == 'clang' && runner.os != 'Windows' | |
run: | | |
TMP_CC='${{ github.workspace }}/clang+llvm-${{ matrix.cxx-version }}-${{ matrix.arch }}/bin/clang' | |
if [ "${{ matrix.os }}" == "macOS-12" ]; then | |
echo "CC=${TMP_CC}-wrapper" >> $GITHUB_ENV | |
echo "CXX=${TMP_CC}++-wrapper" >> $GITHUB_ENV | |
echo "SDKROOT=$(xcrun --show-sdk-path)" >> $GITHUB_ENV | |
else | |
echo "CC=${TMP_CC}" >> $GITHUB_ENV | |
echo "CXX=${TMP_CC}++" >> $GITHUB_ENV | |
fi | |
# On OSX and Linux, clang is installed by default and in the path, | |
# so make sure ${CC} works | |
- name: '[Posix] Verifying installed clang version' | |
if: matrix.compiler == 'clang' && runner.os != 'Windows' | |
run: | | |
set -e | |
if ${CXX} --version | grep -q 'version ${{ matrix.cxx-version }}'; then | |
${CXX} --version | |
else | |
echo "Expected version ${{ matrix.cxx-version }}, from '${CXX}', got:" | |
${CXX} --version | |
exit 1 | |
fi | |
# G++ is only supported on Linux | |
- name: '[Linux] Setting up g++ ${{ matrix.cxx-version }}' | |
if: matrix.compiler == 'g++' | |
run: | | |
# Workaround bug in Github actions | |
wget https://cli-assets.heroku.com/apt/release.key | |
sudo apt-key add release.key | |
# Make sure we have the essentials | |
sudo apt-get update | |
sudo apt-get install ca-certificates | |
sudo apt-get install build-essential software-properties-common -y | |
# This ppa provides multiple versions of g++ | |
sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y | |
sudo apt-get update | |
sudo apt-get install -y ${{ matrix.target }} ${{ matrix.target }}-multilib | |
echo "CC=${{ matrix.target }}" >> $GITHUB_ENV | |
echo "CXX=${{ matrix.target }}" >> $GITHUB_ENV | |
# Make sure ${CC} works and we don't use the $PATH one | |
- name: '[Linux] Verifying installed g++ version' | |
if: matrix.compiler == 'g++' | |
run: | | |
set -e | |
if ${CXX} --version | grep -q '${{ matrix.target }} (Ubuntu '; then | |
${CXX} --version | |
else | |
echo "Expected version ${{ matrix.target }}, from '${CXX}', got:" | |
${CXX} --version | |
exit 1 | |
fi | |
- name: '[Windows] Add VC toolset to PATH' | |
if: runner.os == 'Windows' | |
uses: ilammy/msvc-dev-cmd@v1 | |
- name: '[Windows] Set environment variables' | |
if: runner.os == 'Windows' | |
shell: bash | |
run: | | |
echo "HOST_DMD=${{ env.DC }}" >> $GITHUB_ENV | |
######################################## | |
# Building DMD, druntime, Phobos # | |
######################################## | |
- name: '[Posix] Build compiler & standard library' | |
if: runner.os != 'Windows' | |
run: | | |
# All hosts are 64 bits but let's be explicit | |
./dmd/compiler/src/build.d -j$N MODEL=64 | |
make -C dmd/druntime -j$N MODEL=64 | |
make -C phobos -j$N MODEL=64 | |
# Both version can live side by side (they end up in a different directory) | |
# However, since clang does not provide a multilib package, only test 32 bits with g++ | |
if [ ${{ matrix.compiler }} == "g++" ]; then | |
./dmd/compiler/src/build.d install -j$N MODEL=32 | |
make -C dmd/druntime install -j$N MODEL=32 | |
make -C phobos install -j$N MODEL=32 | |
fi | |
- name: '[Windows] Build compiler & standard library' | |
if: runner.os == 'Windows' | |
shell: bash | |
run: | | |
dmd -run dmd/compiler/src/build.d -j$N MODEL=64 | |
if [ $? -ne 0 ]; then return 1; fi | |
# Note: Only CC for druntime and AR for Phobos are required ATM, | |
# but providing all three to avoid surprise for future contributors | |
# Those should really be in the path, though. | |
make -j$N -C dmd/druntime | |
if [ $? -ne 0 ]; then return 1; fi | |
make -j$N -C phobos | |
if [ $? -ne 0 ]; then return 1; fi | |
######################################## | |
# Running the test suite # | |
######################################## | |
- name: '[Posix] Run C++ test suite' | |
if: runner.os != 'Windows' | |
env: | |
# Reset LD_LIBRARY_PATH when running the tests, so they use the newly built libphobos2.so. | |
LD_LIBRARY_PATH: '' | |
run: | | |
./dmd/compiler/test/run.d --environment runnable_cxx dshell/dll_cxx.d MODEL=64 | |
if [ ${{ matrix.compiler }} == "g++" ]; then | |
./dmd/compiler/test/run.d clean | |
./dmd/compiler/test/run.d --environment runnable_cxx dshell/dll_cxx.d MODEL=32 | |
fi | |
- name: '[Windows] Run C++ test suite' | |
if: runner.os == 'Windows' | |
shell: bash | |
run: | | |
make -j$N -C dmd/druntime test/stdcpp/.run | |
if [ $? -ne 0 ]; then return 1; fi | |
######################################## | |
# Run C++ frontend unittests # | |
######################################## | |
- name: Run C++ frontend unittests | |
if: matrix.compiler == 'g++' | |
run: | | |
./dmd/compiler/src/build.d cxx-unittest MODEL=64 | |
- name: Run C++ frontend unittests (32-bit) | |
if: matrix.compiler == 'g++' | |
run: | | |
./dmd/compiler/src/build.d cxx-unittest MODEL=32 | |
######################################## | |
# Store generated artifacts # | |
######################################## | |
- name: Store artifacts | |
if: ${{ matrix.storeArtifacts }} | |
uses: actions/upload-artifact@v4 | |
with: | |
name: dmd-${{ matrix.os }} | |
path: install |