I'm writing a library in C++ that implements a few different coroutine primitives, and the library is targeted at the newly released C++20. As a result, it also makes use of things like concepts that were added to the language in C++20.
I want to use github actions to build the library, but builds are failing because ubuntu-latest uses GCC 9 and CLang 9, but my library requires at least GCC 10 or Clang 10 to build.
I attempted to configure the build action by setting -DCMAKE_CXX_COMPILER=g++-10, but the action fails in the Configure CMake phase because g++-10 can't be found on the system.
Is there any way specify github actions should use GCC 10 or Clang 10?
This is the most recent workflow file I tried running:
name: CMake
on: [push]
env:
# Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
BUILD_TYPE: Release
jobs:
build:
# The CMake configure and build commands are platform agnostic and should work equally
# well on Windows or Mac. You can convert this to a matrix build if you need
# cross-platform coverage.
# See: https://docs.github.com/en/actions/configuring-and-managing-workflows/configuring-a-workflow#configuring-a-build-matrix
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Create Build Environment
# Some projects don't allow in-source building, so create a separate build directory
# We'll use this as our working directory for all subsequent commands
run: cmake -E make_directory ${{runner.workspace}}/build
- name: Configure CMake
# Use a bash shell so we can use the same syntax for environment variable
# access regardless of the host operating system
shell: bash
working-directory: ${{runner.workspace}}/build
# Note the current convention is to use the -S and -B options here to specify source
# and build directories, but this is only available with CMake 3.13 and higher.
# The CMake binaries on the Github Actions machines are (as of this writing) 3.12
run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_CXX_COMPILER=g++-10
- name: Build
working-directory: ${{runner.workspace}}/build
shell: bash
# Execute the build. You can specify a specific target with "--target <NAME>"
run: cmake --build . --config $BUILD_TYPE
- name: Test
working-directory: ${{runner.workspace}}/build
shell: bash
# Execute tests defined by the CMake configuration.
# See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
run: ctest -C $BUILD_TYPE
And this is the point where it fails:
Run cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_CXX_COMPILER=g++-10
-- The CXX compiler identification is unknown
CMake Error at CMakeLists.txt:2 (project):
The CMAKE_CXX_COMPILER:
g++-10
is not a full path and was not found in the PATH.
Tell CMake where to find the compiler by setting either the environment
variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
to the compiler, or to the compiler name if it is in the PATH.
-- Configuring incomplete, errors occurred!
See also "/home/runner/work/conduit/build/CMakeFiles/CMakeOutput.log".
See also "/home/runner/work/conduit/build/CMakeFiles/CMakeError.log".
##[error]Process completed with exit code 1.