www/nginx: fix build with a third-party passenger module

PR:	275161
Sponsored by:	Netzkommune GmbH

Author: joneum

www/nginx/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	nginx
 PORTVERSION=	1.24.0
-PORTREVISION?=	12
+PORTREVISION?=	13
 PORTEPOCH=	3
 CATEGORIES=	www
 MASTER_SITES=	https://nginx.org/download/ \
@@ -240,6 +240,10 @@ CONFIGURE_ENV+=	OPTIMIZE="yes"
 CFLAGS+=	-DNDEBUG
 .endif
 
+.if ${PORT_OPTIONS:MPASSENGER}
+CONFIGURE_ENV+=	EXTRA_PRE_CXXFLAGS="-std=c++14"
+.endif
+
 # Fix build failure on clang >= 12
 .if ${PORT_OPTIONS:MHTTP_PERL} && ${OSVERSION} >= 1301000
 CFLAGS+=	-Wno-compound-token-split-by-macro