Index: head/devel/pecl-intl/Makefile
===================================================================
--- head/devel/pecl-intl/Makefile	(revision 466397)
+++ head/devel/pecl-intl/Makefile	(revision 466398)
@@ -1,20 +1,22 @@
 # Created by: Wen Heping <wenheping@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	intl
 PORTVERSION=	3.0.0
 PORTREVISION=	12
 CATEGORIES=	devel pear
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	PECL extension to support Internationalization(ICU)
 
 LICENSE=	PHP301
 
 LIB_DEPENDS=	libicui18n.so:devel/icu
 
 IGNORE_WITH_PHP=70 71 72
 USES=		compiler:c++11-lib php:pecl
 USE_CXXSTD=	gnu++11
 
+CPPFLAGS+=	-DU_USING_ICU_NAMESPACE=1
+
 .include <bsd.port.mk>
Index: head/devel/php70-intl/Makefile
===================================================================
--- head/devel/php70-intl/Makefile	(revision 466397)
+++ head/devel/php70-intl/Makefile	(revision 466398)
@@ -1,13 +1,15 @@
 # Created by: Alex Dupre <ale@FreeBSD.org>
 # $FreeBSD$
 
 CATEGORIES=	devel
 
 MASTERDIR=	${.CURDIR}/../../lang/php70
 
 PKGNAMESUFFIX=	-intl
 
 USES=		compiler:c++11-lib
 USE_CXXSTD=	gnu++11
 
+CPPFLAGS+=	-DU_USING_ICU_NAMESPACE=1
+
 .include "${MASTERDIR}/Makefile"
Index: head/devel/php71-intl/Makefile
===================================================================
--- head/devel/php71-intl/Makefile	(revision 466397)
+++ head/devel/php71-intl/Makefile	(revision 466398)
@@ -1,12 +1,14 @@
 # $FreeBSD$
 
 CATEGORIES=	devel
 
 MASTERDIR=	${.CURDIR}/../../lang/php71
 
 PKGNAMESUFFIX=	-intl
 
 USES=		compiler:c++11-lib
 USE_CXXSTD=	gnu++11
 
+CPPFLAGS+=	-DU_USING_ICU_NAMESPACE=1
+
 .include "${MASTERDIR}/Makefile"
Index: head/devel/php72-intl/Makefile
===================================================================
--- head/devel/php72-intl/Makefile	(revision 466397)
+++ head/devel/php72-intl/Makefile	(revision 466398)
@@ -1,12 +1,14 @@
 # $FreeBSD$
 
 CATEGORIES=	devel
 
 MASTERDIR=	${.CURDIR}/../../lang/php72
 
 PKGNAMESUFFIX=	-intl
 
 USES=		compiler:c++11-lib
 USE_CXXSTD=	gnu++11
 
+CPPFLAGS+=	-DU_USING_ICU_NAMESPACE=1
+
 .include "${MASTERDIR}/Makefile"