Index: Makefile
===================================================================
--- Makefile	(revision 487458)
+++ Makefile	(working copy)
@@ -20,8 +20,7 @@
 		${LUA_MODLIBDIR}/bit.so:devel/lua51-bitop
 LIB_DEPENDS=	libidn.so:dns/libidn
 
-USES=		cpe gmake lua:51 shebangfix ssl
-USE_CSTD=	c99
+USES=		compiler:c11 cpe gmake lua:51 shebangfix ssl
 SHEBANG_FILES=	prosody prosodyctl
 LUA_PREMK=	yes
 HAS_CONFIGURE=	yes
Index: files/patch-configure
===================================================================
--- files/patch-configure	(revision 487458)
+++ files/patch-configure	(working copy)
@@ -1,4 +1,4 @@
---- configure.orig	2017-09-28 13:07:47 UTC
+--- configure.orig	2018-05-30 22:10:09 UTC
 +++ configure
 @@ -16,10 +16,10 @@ LUA_LIBDIR="/usr/lib"
  IDN_LIB="idn"
@@ -14,3 +14,14 @@
  PRNG=
  PRNGLIBS=
  
+@@ -202,8 +202,8 @@ do
+       if [ "$OSTYPE" = "freebsd" -o "$OSTYPE" = "openbsd" ]; then
+          LUA_INCDIR="/usr/local/include/lua51"
+          LUA_INCDIR_SET=yes
+-         CFLAGS="-Wall -fPIC -I/usr/local/include"
+-         LDFLAGS="-I/usr/local/include -L/usr/local/lib -shared"
++         CFLAGS+="-Wall -fPIC -I/usr/local/include"
++         LDFLAGS+="-I/usr/local/include -L/usr/local/lib -shared"
+          LUA_SUFFIX="51"
+          LUA_SUFFIX_SET=yes
+          LUA_DIR=/usr/local