Index: head/lang/io-devel/Makefile
===================================================================
--- head/lang/io-devel/Makefile	(revision 494829)
+++ head/lang/io-devel/Makefile	(revision 494830)
@@ -1,32 +1,39 @@
 # Created by: gahr
 # $FreeBSD$
 
 PORTNAME=	io
 PORTVERSION=	20180807
 PORTREVISION=	1
 CATEGORIES=	lang
 PKGNAMESUFFIX=	-devel
 
 MAINTAINER=	gahr@FreeBSD.org
 COMMENT=	Small prototype-based programming language (devel version)
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 CONFLICTS=	io-[0-9]*
 
 USES=		cmake:noninja compiler:c11
 
 USE_LDCONFIG=	yes
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	IoLanguage
 GH_TAGNAME=	9bfac31d
 
 GH_TUPLE+=	kgabis:parson:4f3eaa6:parson/deps/parson
 
 MAKE_JOBS_UNSAFE=	yes
 
 CMAKE_ARGS=	-DWITHOUT_EERIE:BOOL=ON
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+# disable sse on non-x86 archs
+.if ${ARCH} != amd64 && ${ARCH} != i386
+EXTRA_PATCHES+= ${PATCHDIR}/extra-patch-CMakeLists.txt
+.endif
+
+.include <bsd.port.post.mk>
Index: head/lang/io-devel/files/extra-patch-CMakeLists.txt
===================================================================
--- head/lang/io-devel/files/extra-patch-CMakeLists.txt	(nonexistent)
+++ head/lang/io-devel/files/extra-patch-CMakeLists.txt	(revision 494830)
@@ -0,0 +1,10 @@
+--- CMakeLists.txt.orig	2018-08-07 11:40:49 UTC
++++ CMakeLists.txt
+@@ -41,7 +41,6 @@ IF(CMAKE_COMPILER_IS_GNUCC OR (CMAKE_C_C
+ 	SET(CMAKE_BUILD_TYPE_DebugFast)
+ 	SET(CMAKE_CXX_FLAGS_DEBUGFAST "-g -O0")
+ 	SET(CMAKE_C_FLAGS_DEBUGFAST "-g -O0")
+-	SET(CMAKE_C_FLAGS "-msse2")
+ 	if(NOT CMAKE_BUILD_TYPE)
+ 	        SET(CMAKE_BUILD_TYPE "DebugFast")
+ 	endif(NOT CMAKE_BUILD_TYPE)

Property changes on: head/lang/io-devel/files/extra-patch-CMakeLists.txt
___________________________________________________________________
Added: fbsd:nokeywords
## -0,0 +1 ##
+yes
\ No newline at end of property
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property