--- a/meson.build	
+++ a/meson.build	
@@ -39,16 +39,10 @@ cc = meson.get_compiler('c')
 
 coroutine = get_option('with-coroutine')
 
-if coroutine == 'auto'
-  if host_machine.system() == 'windows'
-    coroutine = 'gthread'
-  else
-    coroutine = 'ucontext'
-  endif
-endif
+coroutine = 'gthread'
 
 if coroutine == 'ucontext'
-  conf_data.set('WITH_UCONTEXT', true)
+  conf_data.set('WITH_UCONTEXT', false)
 elif coroutine != 'gthread'
   error('Unknown coroutine backend')
 endif
--- a/src/meson.build	
+++ a/src/meson.build	
@@ -78,15 +78,7 @@ gvnc_sources = gvnc_gir_sources + gvnc_marshal + [
   'vncconnectionblt.h',
 ]
 
-if coroutine == 'ucontext'
-  gvnc_sources += [
-         'coroutine_ucontext.c',
-         'continuation.h',
-         'continuation.c',
-  ]
-else
-  gvnc_sources += 'coroutine_gthread.c'
-endif
+gvnc_sources += 'coroutine_gthread.c'
 
 gvnc_link_args = []
 if meson.get_compiler('c').has_link_argument('-Wl,--no-undefined')