diff -urN libctl.orig/Makefile libctl/Makefile
--- libctl.orig/Makefile	2020-01-05 16:31:16.432692000 +0100
+++ libctl/Makefile	2020-07-04 07:52:01.808356000 +0200
@@ -2,27 +2,31 @@
 # $FreeBSD: head/science/libctl/Makefile 507372 2019-07-26 20:46:53Z gerald $
 
 PORTNAME=	libctl
-PORTVERSION=	3.2.2
-PORTREVISION=	9
+DISTVERSIONPREFIX=	v
+DISTVERSION=	4.5.0
 CATEGORIES=	science math
-MASTER_SITES=	http://ab-initio.mit.edu/libctl/
 
 MAINTAINER=	devel@stasyan.com
 COMMENT=	Control Language Library
 
 LICENSE=	GPLv2
 
-LIB_DEPENDS=	libguile-2.2.so:lang/guile2
+BROKEN_sparc64=	does not build
 
+LIB_DEPENDS=	libgc-threaded.so:devel/boehm-gc-threaded \
+		libguile-2.2.so:lang/guile2
+
+USES=		autoreconf fortran libtool pkgconfig
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--enable-shared
-USES=		fortran libtool pkgconfig
 USE_LDCONFIG=	yes
 LDFLAGS+=	-L${LOCALBASE}/lib -lm
 
-BROKEN_sparc64=	does not build
+USE_GITHUB=	yes
+GH_ACCOUNT=	NanoComp
 
 OPTIONS_DEFINE=	NLOPT DOCS EXAMPLES
+OPTIONS_DEFAULT=	NLOPT
 NLOPT_DESC=	Use NLopt, an external NonLinear OPTimizer
 
 NLOPT_LIB_DEPENDS=	libnlopt.so:math/nlopt
@@ -32,8 +36,8 @@
 	${CP} -R ${WRKSRC}/doc/ ${STAGEDIR}${DOCSDIR}
 	@${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
 	${CP} -R ${WRKSRC}/examples/ ${STAGEDIR}${EXAMPLESDIR}
-	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libctl.so.5.0.2
-	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libctlgeom.so.5.0.2
+	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libctl.so.7.3.0
+	@${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/libctlgeom.so.7.3.0
 	@${STRIP_CMD} ${STAGEDIR}${EXAMPLESDIR}/.libs/example
 
 .include <bsd.port.mk>
diff -urN libctl.orig/distinfo libctl/distinfo
--- libctl.orig/distinfo	2020-01-05 16:31:16.431279000 +0100
+++ libctl/distinfo	2020-07-04 07:30:36.677665000 +0200
@@ -1,2 +1,3 @@
-SHA256 (libctl-3.2.2.tar.gz) = 8abd8b58bc60e84e16d25b56f71020e0cb24d75b28bc5db86d50028197c7efbc
-SIZE (libctl-3.2.2.tar.gz) = 505796
+TIMESTAMP = 1593840636
+SHA256 (NanoComp-libctl-v4.5.0_GH0.tar.gz) = 5124551b3c9ed9a0ca599179f5e78318b5a7a1daa06220329a3b2963c848ba03
+SIZE (NanoComp-libctl-v4.5.0_GH0.tar.gz) = 170530
diff -urN libctl.orig/pkg-plist libctl/pkg-plist
--- libctl.orig/pkg-plist	2020-01-05 16:31:16.441128000 +0100
+++ libctl/pkg-plist	2020-07-04 07:42:45.032996000 +0200
@@ -1,24 +1,29 @@
 bin/gen-ctl-io
+include/ctl-math.h
 include/ctl.h
 include/ctlgeom-types.h
 include/ctlgeom.h
 lib/libctl.a
 lib/libctl.so
-lib/libctl.so.5
-lib/libctl.so.5.0.2
+lib/libctl.so.7
+lib/libctl.so.7.3.0
 lib/libctlgeom.a
 lib/libctlgeom.so
-lib/libctlgeom.so.5
-lib/libctlgeom.so.5.0.2
+lib/libctlgeom.so.7
+lib/libctlgeom.so.7.3.0
 man/man1/gen-ctl-io.1.gz
-%%PORTDOCS%%%%DOCSDIR%%/advanced-user.html
-%%PORTDOCS%%%%DOCSDIR%%/basic-user.html
-%%PORTDOCS%%%%DOCSDIR%%/developer.html
-%%PORTDOCS%%%%DOCSDIR%%/guile-links.html
-%%PORTDOCS%%%%DOCSDIR%%/index.html
-%%PORTDOCS%%%%DOCSDIR%%/introduction.html
-%%PORTDOCS%%%%DOCSDIR%%/license.html
-%%PORTDOCS%%%%DOCSDIR%%/user-ref.html
+%%PORTDOCS%%%%DOCSDIR%%/README
+%%PORTDOCS%%%%DOCSDIR%%/docs/Advanced_User_Experience.md
+%%PORTDOCS%%%%DOCSDIR%%/docs/Basic_User_Experience.md
+%%PORTDOCS%%%%DOCSDIR%%/docs/Developer_Experience.md
+%%PORTDOCS%%%%DOCSDIR%%/docs/Guile_and_Scheme_Information.md
+%%PORTDOCS%%%%DOCSDIR%%/docs/Installation.md
+%%PORTDOCS%%%%DOCSDIR%%/docs/Introduction.md
+%%PORTDOCS%%%%DOCSDIR%%/docs/License_and_Copyright.md
+%%PORTDOCS%%%%DOCSDIR%%/docs/User_Reference.md
+%%PORTDOCS%%%%DOCSDIR%%/docs/images/libctl-logo.png
+%%PORTDOCS%%%%DOCSDIR%%/docs/index.md
+%%PORTDOCS%%%%DOCSDIR%%/requirements.txt
 %%PORTEXAMPLES%%%%EXAMPLESDIR%%/.deps/example-ctl-io.Po
 %%PORTEXAMPLES%%%%EXAMPLESDIR%%/.deps/example-example.Po
 %%PORTEXAMPLES%%%%EXAMPLESDIR%%/.deps/example-geom.Po