Add more compilers (#5220)

* 👷 add ipcx and nvc++ Signed-off-by: Niels Lohmann <mail@nlohmann.me> * 🐛 fix nvc++ build Signed-off-by: Niels Lohmann <mail@nlohmann.me> * 🐛 fix nvc++ build Signed-off-by: Niels Lohmann <mail@nlohmann.me> * 👷 add more MSVC images Signed-off-by: Niels Lohmann <mail@nlohmann.me> * 👷 add more MSVC images Signed-off-by: Niels Lohmann <mail@nlohmann.me> --------- Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-07-03 09:14:18 +00:00 · 2026-07-02 17:13:49 +02:00
parent 31dd15b258
commit c944317002
4 changed files with 133 additions and 0 deletions
@@ -288,6 +288,30 @@ jobs:
          . /opt/intel/oneapi/setvars.sh
          cmake --build build --target ci_icpc

+  ci_icpx:
+    runs-on: ubuntu-latest
+    container: intel/oneapi-hpckit:latest
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_icpx
+
+  ci_nvhpc:
+    runs-on: ubuntu-latest
+    container: nvcr.io/nvidia/nvhpc:25.5-devel-cuda12.9-ubuntu22.04
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
+      - name: Run CMake
+        run: cmake -S . -B build -DJSON_CI=On
+      - name: Build
+        run: cmake --build build --target ci_nvhpc
+
  ci_emscripten:
    runs-on: ubuntu-latest
    steps:
@@ -74,6 +74,68 @@ jobs:
      - name: Test
        run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure

+  # Visual Studio 2026 (v145 toolset) on the windows-2025 image. The "Visual Studio
+  # 18 2026" generator requires CMake 4.2+, so a recent CMake is fetched explicitly.
+  msvc-vs2026:
+    strategy:
+      matrix:
+        build_type: [Debug, Release]
+        architecture: [Win32, x64]
+        std_version: [default, latest]
+
+    runs-on: windows-2025
+
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - name: Get latest CMake and ninja
+        uses: lukka/get-cmake@f5b8fbb4d77cec1acc5a5f9f0df4beffaf5d98d9 # v4.3.4
+      - name: Set extra CXX_FLAGS for latest std_version
+        # /wd5285 silences C5285 emitted by the bundled third-party doctest.h, which
+        # specializes std::tuple (newly diagnosed by the VS2026 v145 toolset)
+        run: |
+          if [ "${{ matrix.std_version }}" = "latest" ]; then
+            echo "flags=/permissive- /std:c++latest /utf-8 /W4 /WX /wd5285" >> $GITHUB_ENV
+          else
+            echo "flags=/W4 /WX /wd5285" >> $GITHUB_ENV
+          fi
+        shell: bash
+      - name: Run CMake (Release)
+        run: cmake -S . -B build -G "Visual Studio 18 2026" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="$env:flags"
+        if: matrix.build_type == 'Release'
+        shell: pwsh
+      - name: Run CMake (Debug)
+        run: cmake -S . -B build -G "Visual Studio 18 2026" -A ${{ matrix.architecture }} -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="$env:flags"
+        if: matrix.build_type == 'Debug'
+        shell: pwsh
+      - name: Build
+        run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure
+
+  # Native ARM64 Windows runner with the MSVC ARM64 toolset. The windows-11-arm
+  # label is only available for public repositories.
+  msvc-arm64:
+    strategy:
+      matrix:
+        build_type: [Debug, Release]
+
+    runs-on: windows-11-arm
+
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - name: Run CMake (Release)
+        run: cmake -S . -B build -G "Visual Studio 17 2022" -A ARM64 -DJSON_BuildTests=On -DCMAKE_CXX_FLAGS="/W4 /WX"
+        if: matrix.build_type == 'Release'
+        shell: pwsh
+      - name: Run CMake (Debug)
+        run: cmake -S . -B build -G "Visual Studio 17 2022" -A ARM64 -DJSON_BuildTests=On -DJSON_FastTests=ON -DCMAKE_CXX_FLAGS="/W4 /WX"
+        if: matrix.build_type == 'Debug'
+        shell: pwsh
+      - name: Build
+        run: cmake --build build --config ${{ matrix.build_type }} --parallel 10
+      - name: Test
+        run: cd build ; ctest -j 10 -C ${{ matrix.build_type }} --output-on-failure
+
  clang:
    runs-on: windows-2022
    strategy:
@@ -701,6 +701,48 @@ add_custom_target(ci_icpc
    COMMENT "Compile and test with ICPC"
 )

+add_custom_target(ci_icpx
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DCMAKE_C_COMPILER=icx -DCMAKE_CXX_COMPILER=icpx
+        -DJSON_BuildTests=ON -DJSON_FastTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_icpx
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_icpx
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_icpx && ${CMAKE_CTEST_COMMAND} --parallel ${N} --exclude-regex "test-unicode" --output-on-failure
+    COMMENT "Compile and test with ICPX (Intel oneAPI DPC++/C++)"
+)
+
+###############################################################################
+# NVIDIA HPC SDK C++ Compiler
+###############################################################################
+
+# nvc++ defaults to a relaxed, non-IEEE floating-point model that flushes denormals
+# to zero and does not honor NaN ordering; -Kieee restores strict IEEE 754 behavior
+# (needed for the dtoa/grisu and NaN-comparison code paths).
+#
+# The following tests are excluded as they trigger known nvc++ 25.5 defects (not
+# library bugs); see https://github.com/nlohmann/json for tracking. Only the
+# affected language-standard variants are excluded so coverage is otherwise kept:
+#   - test-comparison_cpp20, test-comparison_legacy_cpp20
+#         miscompiles cross-type/<=> comparison (e.g. `-17 <= null`)
+#   - test-constructor1_cpp11
+#         std::initializer_list lifetime bug -> SIGSEGV
+#   - test-deserialization_cpp20
+#         mangles the UTF-8 u8"" string literal in the char8_t (C++20) section
+add_custom_target(ci_nvhpc
+    COMMAND ${CMAKE_COMMAND}
+        -DCMAKE_BUILD_TYPE=Debug -GNinja
+        -DCMAKE_C_COMPILER=nvc -DCMAKE_CXX_COMPILER=nvc++
+        -DCMAKE_CXX_FLAGS=-Kieee
+        -DJSON_BuildTests=ON -DJSON_FastTests=ON
+        -S${PROJECT_SOURCE_DIR} -B${PROJECT_BINARY_DIR}/build_nvhpc
+    COMMAND ${CMAKE_COMMAND} --build ${PROJECT_BINARY_DIR}/build_nvhpc
+    # the pipes are escaped so the surrounding shell passes them to ctest verbatim
+    # instead of treating them as shell pipe operators
+    COMMAND cd ${PROJECT_BINARY_DIR}/build_nvhpc && ${CMAKE_CTEST_COMMAND} --parallel ${N} --exclude-regex "test-unicode\\|test-comparison_cpp20\\|test-comparison_legacy_cpp20\\|test-constructor1_cpp11\\|test-deserialization_cpp20" --output-on-failure
+    COMMENT "Compile and test with NVIDIA HPC SDK (nvc++)"
+)
+
 ###############################################################################
 # REUSE
 ###############################################################################
@@ -85,11 +85,16 @@ violations will result in a failed build.
        | GNU 16.1.0                                   | x86_64       | Ubuntu 22.04.1 LTS                | GitHub    |
        | GNU 16.1.0                                   | arm64        | Linux 6.1.100                     | Cirrus CI |
        | icpc (ICC) 2021.5.0 20211109                 | x86_64       | Ubuntu 20.04.3 LTS                | GitHub    |
+        | icpx (Intel oneAPI DPC++/C++) 2025.3.2       | x86_64       | Ubuntu 24.04 LTS                  | GitHub    |
+        | nvc++ (NVIDIA HPC SDK) 25.5-0                | x86_64       | Ubuntu 22.04 LTS                  | GitHub    |
        | MSVC 19.0.24241.7                            | x86          | Windows 8.1                       | AppVeyor  |
        | MSVC 19.16.27035.0                           | x86          | Windows-10 (Build 14393)          | AppVeyor  |
        | MSVC 19.29.30157.0                           | x86          | Windows-10 (Build 17763)          | AppVeyor  |
+        | MSVC 19.44.35207.0                           | arm64        | Windows 11 (Build 26200)          | GitHub    |
        | MSVC 19.44.35214.0                           | x86          | Windows Server 2022 (Build 20348) | GitHub    |
        | MSVC 19.44.35214.0                           | x86_64       | Windows Server 2022 (Build 20348) | GitHub    |
+        | MSVC 19.51.36231.0                           | x86          | Windows Server 2025 (Build 26100) | GitHub    |
+        | MSVC 19.51.36231.0                           | x86_64       | Windows Server 2025 (Build 26100) | GitHub    |

 - [x] The library is compiled with all C++ language revisions (C++11, C++14, C++17, C++20, C++23, and C++26) to detect
  and fix language deprecations early.