[libadwaita/msvc: 268/271] ewamples/meson.build: Fix linking on Visual Studio-like compilers

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

commit 6403d0a9255a20671d2c0d762868be736293c22d
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Mon Jul 26 18:56:55 2021 +0800

    ewamples/meson.build: Fix linking on Visual Studio-like compilers
    
    We must pass in /entry:mainCRTStartup so that we can build the demo program
    with 'gui_app: true'.

 examples/meson.build | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/examples/meson.build b/examples/meson.build
index 798b23cf..d2b06cb5 100644
--- a/examples/meson.build
+++ b/examples/meson.build
@@ -18,10 +18,17 @@ adwaita_demo_sources = [
   libadwaita_generated_headers,
 ]
 
+linker_args = []
+
+if cc.get_argument_syntax() == 'msvc'
+  linker_args += '/entry:mainCRTStartup'
+endif
+
 adwaita_demo = executable('adwaita-@0@-demo'.format(apiversion),
   adwaita_demo_sources,
   dependencies: libadwaita_dep,
   gui_app: true,
+  link_args: linker_args,
   install: true,
 )