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Document the Meson options and check them in CI

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Describe the options of meson.build in FILES.md and in the Meson section
of the package manager documentation, which so far said that a Meson
installation always uses the default configuration.

The ci_meson_install job now also installs with non-default options and
checks that the headers of the multi-header version are installed, that
the definitions reach the pkg-config file and the CMake target, and that
find_package still works.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
This commit is contained in:
Niels Lohmann
2026-09-27 14:51:27 +02:00
parent 2790175d79
commit 71b4eaf743
3 changed files with 31 additions and 6 deletions
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.github/workflows/ubuntu.yml
+14
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@@ -49,6 +49,20 @@ jobs:
run: |
cmake -S tests/cmake_import/project -B build-import -DCMAKE_PREFIX_PATH=${{ github.workspace }}/install
cmake --build build-import
- name: Install with Meson and non-default options
run: |
meson setup build-meson-options --prefix=${{ github.workspace }}/install-options -DMultipleHeaders=true -DDiagnostics=true -DGlobalUDLs=false
meson install -C build-meson-options
- name: Check that the options reach the installed files
run: |
test -d install-options/include/nlohmann/detail
cflags=$(PKG_CONFIG_PATH=${{ github.workspace }}/install-options/share/pkgconfig pkg-config --cflags nlohmann_json)
echo "$cflags"
echo "$cflags" | grep -q -- '-DJSON_DIAGNOSTICS=1'
echo "$cflags" | grep -q -- '-DJSON_USE_GLOBAL_UDLS=0'
grep -q 'JSON_USE_GLOBAL_UDLS=0;JSON_DIAGNOSTICS=1' install-options/share/cmake/nlohmann_json/nlohmann_jsonTargets.cmake
cmake -S tests/cmake_import/project -B build-import-options -DCMAKE_PREFIX_PATH=${{ github.workspace }}/install-options
cmake --build build-import-options
ci_infer:
runs-on: ubuntu-latest