cirrus.yml: Improve the windows_msys2_task

There's no need to run a full-blown bash just to create a directory.
And we can skip the "cd build" each time by doing it once at the
beginning.

Additionally, let's exclude some targets (that we already compile-test
with MinGW in the gitlab jobs) from the build, since the build time of
this task is very long already (between 80 and 90 minutes).

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230208103046.618154-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230228190653.1602033-14-alex.bennee@linaro.org>

.cirrus.yml

@@ -100,9 +100,11 @@ windows_msys2_task:
       tar xf C:\tools\archive\msys64.tar
       Write-Output "Extract msys2 time taken: $((Get-Date).Subtract($start_time))"
   script:
-    - C:\tools\msys64\usr\bin\bash.exe -lc "mkdir build"
-    - C:\tools\msys64\usr\bin\bash.exe -lc "cd build && ../configure --python=python3"
-    - C:\tools\msys64\usr\bin\bash.exe -lc "cd build && make -j8"
+    - mkdir build
+    - cd build
+    - C:\tools\msys64\usr\bin\bash.exe -lc "../configure --python=python3
+        --target-list-exclude=i386-softmmu,ppc64-softmmu,aarch64-softmmu,mips64-softmmu,mipsel-softmmu,sh4-softmmu"
+    - C:\tools\msys64\usr\bin\bash.exe -lc "make -j8"
     - exit $LastExitCode
   test_script:
     - C:\tools\msys64\usr\bin\bash.exe -lc "cd build && make V=1 check"