[vala/meson-msvc: 16/18] meson: Make tests run better on MSVC builds

[Chun-wei Fan <fanchunwei src gnome org>]

commit 734b60dd8c249618b63712c99e17201a596fee26
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Jan 26 18:22:21 2022 +0800

    meson: Make tests run better on MSVC builds
    
    Use compiler flags that would work on Visual Studio so that tests can
    run much better than without.  Currently, one may need to set the
    PKG_CONFIG envvar to `<pkg-config-executable> --msvc-syntax` for this to
    work best.

 tests/meson.build | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
---
diff --git a/tests/meson.build b/tests/meson.build
index 1f22ddaec..1c5d738c1 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -1371,13 +1371,23 @@ vala_flags = [
        '--disable-warnings',
        '--save-temps',
        '--cc', cc.cmd_array()[-1],
+       '-X', '-DGETTEXT_PACKAGE="valac"',
+]
+
+if cc.get_id() == 'msvc'
+vala_flags += [
+       '-X', '-Od',
+       '-X', 'gmodule-2.0.lib', # undefined reference to `g_module_open_full'
+]
+else
+vala_flags += [
        '-X', '-g',
        '-X', '-O0',
        '-X', '-pipe',
        '-X', '-lm',
        '-X', '-lgmodule-2.0', # undefined reference to `g_module_open_full'
-       '-X', '-DGETTEXT_PACKAGE="valac"',
 ]
+endif
 
 test_envars = [
        'G_DEBUG=fatal-warnings',