$NetBSD: patch-meson.build,v 1.1 2022/08/04 15:21:26 nia Exp $

Support for NetBSD.

--- meson.build.orig	2022-06-30 21:59:11.000000000 +0000
+++ meson.build
@@ -38,6 +38,18 @@ foreach h: [ 'sys/prctl.h', 'sys/procctl
 	config_h.set('HAVE_' + h.underscorify().to_upper(), cc.has_header(h))
 endforeach
 
+# NetBSD defines posix_fallocate(), but it always returns failure.
+# Cleanly fall back to ftruncate.
+if host_machine.system() == 'netbsd'
+have_funcs = [
+	'accept4',
+	'mkostemp',
+	'prctl',
+	'memfd_create',
+	'mremap',
+	'strndup',
+]
+else
 have_funcs = [
 	'accept4',
 	'mkostemp',
@@ -47,6 +59,7 @@ have_funcs = [
 	'mremap',
 	'strndup',
 ]
+endif
 foreach f: have_funcs
 	config_h.set('HAVE_' + f.underscorify().to_upper(), cc.has_function(f))
 endforeach
@@ -69,7 +82,7 @@ endif
 config_h.set10('HAVE_BROKEN_MSG_CMSG_CLOEXEC', have_broken_msg_cmsg_cloexec)
 
 if get_option('libraries')
-	if host_machine.system() == 'freebsd'
+	if host_machine.system() == 'freebsd' or host_machine.system() == 'netbsd'
 		# When building for FreeBSD, epoll(7) is provided by a userspace
 		# wrapper around kqueue(2).
 		epoll_dep = dependency('epoll-shim')