meson: Explicitly pass -DWIN32 while building speex

The speex headers assume that WIN32 will always be defined when
building on Windows, but this is only true by default on MinGW.
Always set it explicitly.

diff --git a/ext/speex/meson.build b/ext/speex/meson.build
index d7dacd4..a520fa1 100644 (file)
--- a/ext/speex/meson.build
+++ b/ext/speex/meson.build
@@ -5,11 +5,15 @@ speex_sources = [
 ]
 
 speex_dep = dependency('speex', version : '>=1.1.6', required : get_option('speex'))
+windows_args = []
+if host_system == 'windows'
+  windows_args = ['-DWIN32']
+endif
 
 if speex_dep.found()
   gstspeex = library('gstspeex',
     speex_sources,
-    c_args : gst_plugins_good_args + ['-DGST_USE_UNSTABLE_API'],
+    c_args : gst_plugins_good_args + ['-DGST_USE_UNSTABLE_API'] + windows_args,
     link_args : noseh_link_args,
     include_directories : [configinc],
     dependencies : [gstbase_dep, gsttag_dep, gstaudio_dep, speex_dep, libm],