Index: head/shells/ksh93-devel/Makefile
===================================================================
--- head/shells/ksh93-devel/Makefile	(revision 492658)
+++ head/shells/ksh93-devel/Makefile	(revision 492659)
@@ -1,61 +1,59 @@
 # $FreeBSD$
 
 # Make sure that your configuration DOES NOT set ANY gcc-related
 # variables.  ksh93 will not compile if you set even the seemingly
 # most unrelated variable related to gcc configuration.  This means
 # especially any flag which attempts to set the cputype.  Setting the
 # cputype does absolutely nothing except cause systems to fail in
 # horrible ways.  For any modern processor, setting the cputype only
 # serves to expose gcc bugs and does nothing to speed up any known
 # program.  If you are really unconvinced, go ahead but do not
 # complain to me about it.
 
 PORTNAME=	ksh93
 PORTVERSION=	${AST_COMMIT_DATE}
 CATEGORIES=	shells
 PKGNAMESUFFIX=	-devel
 HASH=		09033f5
 AST_COMMIT_DATE=	2019.02.09
 
 MAINTAINER=	cy@FreeBSD.org
 COMMENT=	Development branch of AT&T KornShell 93
 
 LICENSE=	EPL
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	att
 GH_PROJECT=	ast
 GH_TAGNAME=	${HASH}
 
 KSH93_CONFLICTS=	ksh93-*
 KSH_CONFLICTS=		pdksh-*
 
 USES=		compiler:c11 meson ninja
 FETCH_ENV=	HTTP_AUTH=basic:*:I\ accept\ www.opensource.org/licenses/cpl:.
 LDFLAGS+=	-lm 
 MESON_BUILD_DIR=	build
 MAKE_ENV=	CCFLAGS="${CFLAGS}"
 
-BROKEN_aarch64=		Fails to compile: needs sbrk
-
 OPTIONS_DEFAULT=	KSH93
 OPTIONS_SINGLE=		BIN_KSH
 OPTIONS_SINGLE_BIN_KSH=	KSH KSH93
 KSH_DESC=		Install to ${PREFIX}/bin/ksh
 KSH93_DESC=		Install to ${PREFIX}/bin/ksh93
 
 KSH93_EXTRA_PATCHES=	${FILESDIR}/extra-patch-install-as-ksh93
 KSH93_DESC=	Install to ${PREFIX}/bin/ksh93
 
 KSH_PLIST_SUB=		93=""
 KSH93_PLIST_SUB=	93="93"
 
 .include <bsd.port.options.mk>
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|SF_FLAGS|SFIO_FLAGS|g' ${WRKSRC}/src/lib/libast/include/sfio*.h ${WRKSRC}/src/lib/libast/sfio/*.c
 .if ${PORT_OPTIONS:MKSH93}
 	@${MV} ${WRKSRC}/src/cmd/ksh93/ksh.1 ${WRKSRC}/src/cmd/ksh93/ksh93.1
 .endif
 
 .include <bsd.port.mk>