gitlab-ci: Build MSYS2 job using multiple CPUs

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240819112141.13786-1-philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

.gitlab-ci.d/windows.yml

@@ -88,6 +88,7 @@ msys2-64bit:
       mingw-w64-x86_64-python
       mingw-w64-x86_64-zstd"
   - Write-Output "Running build at $(Get-Date -Format u)"
+  - $env:JOBS = $(.\msys64\usr\bin\bash -lc nproc)
   - $env:CHERE_INVOKING = 'yes'  # Preserve the current working directory
   - $env:MSYS = 'winsymlinks:native' # Enable native Windows symlink
   - $env:CCACHE_BASEDIR = "$env:CI_PROJECT_DIR"
@@ -99,7 +100,7 @@ msys2-64bit:
   - cd build
   - ..\msys64\usr\bin\bash -lc "ccache --zero-stats"
   - ..\msys64\usr\bin\bash -lc "../configure $CONFIGURE_ARGS"
-  - ..\msys64\usr\bin\bash -lc "make"
+  - ..\msys64\usr\bin\bash -lc "make -j$env:JOBS"
   - ..\msys64\usr\bin\bash -lc "make check MTESTARGS='$TEST_ARGS' || { cat meson-logs/testlog.txt; exit 1; } ;"
   - ..\msys64\usr\bin\bash -lc "ccache --show-stats"
   - Write-Output "Finished build at $(Get-Date -Format u)"