CI: Add CI job for VS2019 ARM64 builds

We need to write a Meson cross-compilation file on the fly here, hence the
additions in test-msvc.bat to set up the paths.

Like the 32-bit VS2019 CI job this is only run manually or weekly.

.gitlab-ci.yml

@@ -690,6 +690,42 @@ vs2019-x86:
       - _build/gthread/libgthread-2.0-0.dll
       - _build/gobject/libgobject-2.0-0.dll
 
+vs2019-arm64:
+  extends: .only-schedules-or-manual
+  stage: build
+  tags:
+    - win32-ps
+  needs: []
+  variables:
+    GIT_SUBMODULE_STRATEGY: recursive
+    GIT_SUBMODULE_DEPTH: 1
+    PYTHONUTF8: "1"
+  script:
+    # FIXME: These should use --wrap-mode=nodownload but the Windows CI machines
+    # aren’t currently set up for that.
+    # FIXME: Use --meson-fatal-warnings once we've enabled c_std=gnu99,c99
+    # for the runner's Meson version.
+    - .gitlab-ci/test-msvc.bat --buildtype debug
+                               --wrap-mode=default
+                               --python.platlibdir=C:\Python37\site-packages
+                               --python.purelibdir=C:\Python37\site-packages
+                               --plat=x64_arm64
+  artifacts:
+    reports:
+      junit:
+        - _build/meson-logs/testlog.junit.xml
+        - _build/meson-logs/testlog-*.junit.xml
+    name: "glib-${env:CI_JOB_NAME}-${env:CI_COMMIT_REF_NAME}"
+    when: always
+    expire_in: 1 week
+    paths:
+      - _build/meson-logs
+      - _build/glib/libglib-2.0-0.dll
+      - _build/gio/libgio-2.0-0.dll
+      - _build/gmodule/libgmodule-2.0-0.dll
+      - _build/gthread/libgthread-2.0-0.dll
+      - _build/gobject/libgobject-2.0-0.dll
+
 freebsd-13-x86_64:
   extends: .only-schedules-or-manual
   stage: build

.gitlab-ci/test-msvc.bat

@@ -16,6 +16,30 @@ if "!plat!" == "" set plat=x64
 :: specified build architecture
 call "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Auxiliary\Build\vcvarsall.bat" !plat!
 
+:: Setup and write a cross-compilation file for ARM64 builds
+if not "!plat!" == "x64_arm64" goto :continue_build
+set cross_file=vs2019-arm64.txt
+echo [host_machine]>!cross_file!
+echo system = 'windows'>>!cross_file!
+echo cpu_family = 'aarch64'>>!cross_file!
+echo cpu = 'arm64'>>!cross_file!
+echo endian = 'little'>>!cross_file!
+echo.>>!cross_file!
+echo [binaries]>>!cross_file!
+echo c = 'cl'>>!cross_file!
+echo cpp = 'cl'>>!cross_file!
+echo c_ld = 'link'>>!cross_file!
+echo cpp_ld = 'link'>>!cross_file!
+echo ar = 'lib'>>!cross_file!
+echo windres = 'rc'>>!cross_file!
+
+echo.>>!cross_file!
+echo [properties]>>!cross_file!
+echo skip_sanity_check = true>>!cross_file!
+
+set args=%args% --cross-file=!cross_file!
+
+:continue_build
 pip3 install --upgrade --user meson==1.4.2 || goto :error
 meson setup %args% _build || goto :error
 meson compile -C _build || goto :error
@@ -30,6 +54,7 @@ if not "!plat!" == "x64_x86" meson test -v -C _build --timeout-multiplier %MESON
 meson test -v -C _build --timeout-multiplier %MESON_TEST_TIMEOUT_MULTIPLIER% --setup=unstable_tests --suite=failing --suite=flaky
 
 :: FIXME: can we get code coverage support?
+if not "!cross_file!" == "" if exist !cross_file! del /f/q !cross_file!
 
 goto :EOF
 :error