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Fix using libc++ (#1463)

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Before, libstdc++ was used in both gcc and clang builds.

Fix includes an adjustment to consider in NO_STL case.

Now build with libc++ in separate github workflows with clang.
This commit is contained in:
Roland Reichwein 2026-06-17 13:31:53 +02:00 committed by GitHub
parent 20cab32256
commit c32f9cc862
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7 changed files with 180 additions and 1 deletions
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29
.github/workflows/clang-c++11.yml vendored
View File

@ -30,6 +30,35 @@ jobs:
- name: Run tests
run: ./test/etl_tests -v
build-clang-cpp11-linux-stl-libcxx:
name: Clang C++11 Linux - STL - libc++
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [ubuntu-22.04]
steps:
- uses: actions/checkout@v4
- name: Install libc++
run: |
sudo apt-get update
sudo apt-get install -y libc++-dev libc++abi-dev
- name: Build
run: |
export CC=clang
export CXX=clang++
export CXXFLAGS="-stdlib=libc++"
export LDFLAGS="-stdlib=libc++"
export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=11 ./
clang --version
make -j "$(getconf _NPROCESSORS_ONLN)"
- name: Run tests
run: ./test/etl_tests -v
build-clang-cpp11-linux-no-stl:
name: Clang C++11 Linux - No STL
runs-on: ${{ matrix.os }}

29
.github/workflows/clang-c++14.yml vendored
View File

@ -30,6 +30,35 @@ jobs:
- name: Run tests
run: ./test/etl_tests -v
build-clang-cpp14-linux-stl-libcxx:
name: Clang C++14 Linux - STL - libc++
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [ubuntu-22.04]
steps:
- uses: actions/checkout@v4
- name: Install libc++
run: |
sudo apt-get update
sudo apt-get install -y libc++-dev libc++abi-dev
- name: Build
run: |
export CC=clang
export CXX=clang++
export CXXFLAGS="-stdlib=libc++"
export LDFLAGS="-stdlib=libc++"
export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=14 ./
clang --version
make -j "$(getconf _NPROCESSORS_ONLN)"
- name: Run tests
run: ./test/etl_tests -v
build-clang-cpp14-linux-no-stl:
name: Clang C++14 Linux - No STL
runs-on: ${{ matrix.os }}

29
.github/workflows/clang-c++17.yml vendored
View File

@ -30,6 +30,35 @@ jobs:
- name: Run tests
run: ./test/etl_tests -v
build-clang-cpp17-linux-stl-libcxx:
name: Clang C++17 Linux - STL - libc++
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [ubuntu-22.04]
steps:
- uses: actions/checkout@v4
- name: Install libc++
run: |
sudo apt-get update
sudo apt-get install -y libc++-dev libc++abi-dev
- name: Build
run: |
export CC=clang
export CXX=clang++
export CXXFLAGS="-stdlib=libc++"
export LDFLAGS="-stdlib=libc++"
export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=17 ./
clang --version
make -j "$(getconf _NPROCESSORS_ONLN)"
- name: Run tests
run: ./test/etl_tests -v
build-clang-cpp17-linux-no-stl:
name: Clang C++17 Linux - No STL
runs-on: ${{ matrix.os }}

34
.github/workflows/clang-c++20.yml vendored
View File

@ -8,6 +8,40 @@ on:
jobs:
build-clang-cpp20-linux-stl-libcxx:
name: Clang C++20 Linux - STL - libc++
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [ubuntu-22.04]
steps:
- uses: actions/checkout@v4
# Temporary fix. See https://github.com/actions/runner-images/issues/8659
- name: Install newer Clang
run: |
wget https://apt.llvm.org/llvm.sh
chmod +x ./llvm.sh
sudo ./llvm.sh 17
- name: Install libc++
run: sudo apt-get install -y libc++-17-dev libc++abi-17-dev
- name: Build
run: |
export CC=clang-17
export CXX=clang++-17
export CXXFLAGS="-stdlib=libc++"
export LDFLAGS="-stdlib=libc++"
export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=20 ./
clang-17 --version
make -j "$(getconf _NPROCESSORS_ONLN)"
- name: Run tests
run: ./test/etl_tests -v
build-clang-cpp20-linux-no-stl:
name: Clang C++20 Linux - No STL
runs-on: ${{ matrix.os }}

29
.github/workflows/clang-c++23.yml vendored
View File

@ -8,6 +8,35 @@ on:
jobs:
build-clang-cpp23-linux-stl-libcxx:
name: Clang C++23 Linux - STL - libc++
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [ubuntu-24.04]
steps:
- uses: actions/checkout@v4
- name: Install libc++
run: |
sudo apt-get update
sudo apt-get install -y libc++-dev libc++abi-dev
- name: Build
run: |
export CC=clang
export CXX=clang++
export CXXFLAGS="-stdlib=libc++"
export LDFLAGS="-stdlib=libc++"
export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0
cmake -D BUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=23 -DETL_OPTIMISATION=-O3 ./
clang --version
make -j "$(getconf _NPROCESSORS_ONLN)"
- name: Run tests
run: ./test/etl_tests -v
build-clang-cpp23-linux-no-stl:
name: Clang C++23 Linux - No STL
runs-on: ${{ matrix.os }}

25
.github/workflows/clang-c++26.yml vendored
View File

@ -8,6 +8,31 @@ on:
jobs:
build-clang-cpp26-linux-stl-libcxx:
name: Clang C++26 Linux - STL - libc++
runs-on: ubuntu-24.04
steps:
- uses: actions/checkout@v4
- name: Build Docker image
run: docker build -t etl-ubuntu-2604 -f .devcontainer/ubuntu-26.04/Dockerfile .
- name: Build and run tests
run: |
docker run --rm --user root -v ${{ github.workspace }}:/workspaces/etl etl-ubuntu-2604 bash -c "\
cd /workspaces/etl && \
apt-get update && apt-get install -y libc++-dev libc++abi-dev && \
export CC=clang && \
export CXX=clang++ && \
export CXXFLAGS=-stdlib=libc++ && \
export LDFLAGS=-stdlib=libc++ && \
export ASAN_OPTIONS=alloc_dealloc_mismatch=0,detect_leaks=0 && \
cmake -DBUILD_TESTS=ON -DNO_STL=OFF -DETL_USE_TYPE_TRAITS_BUILTINS=OFF -DETL_USER_DEFINED_TYPE_TRAITS=OFF -DETL_FORCE_TEST_CPP03_IMPLEMENTATION=OFF -DETL_CXX_STANDARD=26 ./ && \
clang --version && \
make -j \$(getconf _NPROCESSORS_ONLN) && \
./test/etl_tests -v"
build-clang-cpp26-linux-stl:
name: Clang C++26 Linux - STL
runs-on: ubuntu-24.04

6
include/etl/tuple.h
View File

@ -1180,7 +1180,11 @@ namespace etl
namespace std
{
#if ETL_NOT_USING_STL \
// libc++ already declares std::tuple_size / std::tuple_element in its inline
// namespace (std::__1), so re-declaring them here would make the name
// ambiguous. Detect libc++ via _LIBCPP_VERSION and skip the forward
// declarations in that case, even when not using the STL.
#if ETL_NOT_USING_STL && !defined(_LIBCPP_VERSION) \
&& !((defined(ETL_DEVELOPMENT_OS_APPLE) || (ETL_COMPILER_FULL_VERSION >= 190000) && (ETL_COMPILER_FULL_VERSION < 210000)) \
&& defined(ETL_COMPILER_CLANG))
template <typename T>