--- meson.build.orig	2020-02-11 23:46:03 UTC
+++ meson.build
@@ -26,7 +26,14 @@ add_project_arguments(
 	language: 'c'
 )
 
-foreach h: [ 'sys/prctl.h' ]
+have_headers = [
+	'signal.h',
+	'sys/epoll.h',
+	'sys/prctl.h',
+	'sys/ucred.h',
+]
+
+foreach h: have_headers
 	config_h.set('HAVE_' + h.underscorify().to_upper(), cc.has_header(h))
 endforeach
 
@@ -37,12 +44,14 @@ have_funcs = [
 	'prctl',
 	'memfd_create',
 	'strndup',
+	'waitid',
 ]
 foreach f: have_funcs
 	config_h.set('HAVE_' + f.underscorify().to_upper(), cc.has_function(f))
 endforeach
 
 if get_option('libraries')
+	epoll_dep = dependency('epoll-shim', required: false)
 	ffi_dep = dependency('libffi')
 
 	decls = [