Add a test run of MSVC ARM64 cross on Windows x64

Add a cross-file for MSVC UWP ARM64.

Bump cidata tag to get an updated install.ps1 script (run by run.ps1)
which sets the vcvars environment correctly when cross-compiling.

Since arranging the correct environment for simultaneous cross and
native 'cl' use is hard, this is test run uses '--cross-only' so we
don't require a native compiler.

Extend '--cross-only' so it also explicitly uses a machine file which
makes all build machine compilers unusable.

azure-pipelines.yml

@@ -56,6 +56,11 @@ jobs:
           arch: x64
           compiler: msvc2019
           backend: vs2019
+        vc2019arm64ninjacross:
+          arch: arm64
+          compiler: msvc2019
+          backend: ninja
+          extraargs: --cross arm64cl.txt --cross-only
 
   steps:
   - task: UsePythonVersion@0

ci/run.ps1

@@ -34,10 +34,10 @@ function DownloadFile([String] $Source, [String] $Destination) {
 }
 
 
-if ($env:backend -eq 'ninja') { $dmd = $true } else { $dmd = $false }
+if (($env:backend -eq 'ninja') -and ($env:arch -ne 'arm64')) { $dmd = $true } else { $dmd = $false }
 
-DownloadFile -Source https://github.com/mesonbuild/cidata/releases/download/ci2/ci_data.zip -Destination $env:AGENT_WORKFOLDER\ci_data.zip
-echo "Extracting  ci_data.zip"
+DownloadFile -Source https://github.com/mesonbuild/cidata/releases/download/ci3/ci_data.zip -Destination $env:AGENT_WORKFOLDER\ci_data.zip
+echo "Extracting ci_data.zip"
 Expand-Archive $env:AGENT_WORKFOLDER\ci_data.zip -DestinationPath $env:AGENT_WORKFOLDER\ci_data
 & "$env:AGENT_WORKFOLDER\ci_data\install.ps1" -Arch $env:arch -Compiler $env:compiler -Boost $true -DMD $dmd
 
@@ -75,4 +75,4 @@ echo "=== Start running tests ==="
 # Starting from VS2019 Powershell(?) will fail the test run
 # if it prints anything to stderr. Python's test runner
 # does that by default so we need to forward it.
-cmd /c 'python 2>&1' run_tests.py --backend $env:backend
+cmd /c "python 2>&1 run_tests.py --backend $env:backend $env:extraargs"

cross/arm64cl.txt

@@ -0,0 +1,17 @@
+[binaries]
+c = 'cl'
+cpp = 'cl'
+ar = 'lib'
+windres = 'rc'
+
+[properties]
+c_args = ['-DWINAPI_FAMILY=WINAPI_FAMILY_APP']
+c_link_args = ['-APPCONTAINER', 'WindowsApp.lib']
+cpp_args = ['-DWINAPI_FAMILY=WINAPI_FAMILY_APP']
+cpp_link_args = ['-APPCONTAINER', 'WindowsApp.lib']
+
+[host_machine]
+system = 'windows'
+cpu_family = 'aarch64'
+cpu = 'armv8'
+endian = 'little'

cross/none.txt

@@ -0,0 +1,18 @@
+# native file used to make the build machine compiler unusable
+
+[host_machine]
+system = 'none'
+cpu_family = 'none'
+cpu = 'none'
+endian = 'little'
+
+[properties]
+
+[binaries]
+c = ['false']
+cpp = ['false']
+objc = ['false']
+objcpp = ['false']
+ar = ['false']
+pkgconfig = ['false']
+cmake = ['false']

run_cross_test.py

@@ -29,7 +29,14 @@ def runtests(cross_file, failfast, cross_only):
     tests = ['--only', 'common']
     if not cross_only:
         tests.append('native')
-    cmd = mesonlib.python_command + ['run_project_tests.py', '--backend', 'ninja'] + (['--failfast'] if failfast else []) + tests + ['--cross-file', cross_file]
+    cmd = mesonlib.python_command + ['run_project_tests.py', '--backend', 'ninja']
+    if failfast:
+        cmd += ['--failfast']
+    cmd += tests
+    cmd += ['--cross-file', cross_file]
+    cmd += ['--']  # args following this are passed directly to meson
+    if cross_only:
+        cmd += ['--native-file', 'cross/none.txt']
     return subprocess.call(cmd)
 
 def main():