github: use fedora:40 image for testing

instead of using ubuntu:jammy and setup-cpp action for prepearing
the building toolchain, use fedora:40 container for building and
testing.

after switching to the github workflow based CI, we've been
seeing test failures due to networking issue:

```
  Failed to install llvm via system package manager Error: Command failed with exit code 35: curl -LJO https://apt.llvm.org/llvm.sh
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed

    0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
    0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
    0     0    0     0    0     0      0      0 --:--:--  0:04:19 --:--:--     0
  curl: (35) OpenSSL SSL_connect: Broken pipe in connection to apt.llvm.org:443
```

since fedora 40 comes with all the dependencies we need, let's
build and test in a container with the fedora:40 image. with,
hopefully the better CDN of the docker, and more reliable mirrors
of fedora repositories, and the package retrievial machinary built
into fedora's package management tools, we should have a more
resilient CI.

Signed-off-by: Kefu Chai <[email protected]>

.github/workflows/test.yaml

@@ -7,7 +7,6 @@ on:
  workflow_call:
  inputs:
  compiler:
- # only the compilers supported by setup-cpp can be used
  description: 'the C++ compiler to use'
  type: string
  required: true
@@ -33,6 +32,7 @@ on:
 jobs:
  test:
  runs-on: ubuntu-latest
+ container: fedora:40
  steps:
  - uses: actions/checkout@v4
  with:
@@ -42,15 +42,14 @@ jobs:
  run: |
  sudo ./install-dependencies.sh
 
- - name: Install ${{ inputs.compiler }}
- uses: aminya/setup-cpp@master
- with:
- compiler: ${{ inputs.compiler }}
- ccache: true
- # ubuntu:latest comes with CMake 3.29, so we just need to install
- # ninja. see
- # https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md#tools
- ninja: "${{ contains(inputs.enables, 'cxx-modules') }}"
+ - name: Install clang++
+ if: ${{ inputs.compiler == 'clang++' }}
+ run: |
+ sudo dnf -y install clang
+
+ - name: Install ccache
+ run: |
+ sudo dnf -y install ccache
 
  - name: Setup ccache
  uses: hendrikmuhs/ccache-action@v1
@@ -59,10 +58,15 @@ jobs:
 
  - name: Configure
  run: >
+ if [ ${{ inputs.compiler }} = "clang++" ]; then
+ CC=clang
+ else
+ CC=gcc
+ fi ;
  ./configure.py
  --ccache
  --c++-standard ${{ inputs.standard }}
- --compiler $CXX
+ --compiler ${{ inputs.compiler }}
  --c-compiler $CC
  --mode ${{ inputs.mode }}
  ${{ inputs.options }}

.github/workflows/tests.yaml

@@ -16,8 +16,7 @@ jobs:
  strategy:
  fail-fast: false
  matrix:
- # only the compilers supported by setup-cpp
- compiler: [clang++-18, gcc-13]
+ compiler: [clang++, g++]
  standard: [20, 23]
  mode: [dev, debug, release]
  with: