Index: math/maxima/Makefile
===================================================================
--- math/maxima/Makefile	(revision 533125)
+++ math/maxima/Makefile	(working copy)
@@ -3,7 +3,7 @@
 
 PORTNAME=	maxima
 PORTVERSION=	5.43.2
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	math lisp tk
 MASTER_SITES=	SF/maxima/Maxima-source/${PORTVERSION}-source
 
@@ -19,10 +19,9 @@
 RUN_DEPENDS=	gnuplot:math/gnuplot \
 		rlwrap:devel/rlwrap
 
-USES=		autoreconf gmake makeinfo shared-mime-info tk
+USES=		autoreconf gmake makeinfo python:3.6+ shared-mime-info tk
 
 GNU_CONFIGURE=	yes
-CONFIGURE_ARGS=	PYTHON=dummy
 
 INFO=		imaxima maxima xmaxima abs_integrate drawutils kovacicODE logic
 
@@ -33,9 +32,9 @@
 
 OPTIONS_DEFINE=		EXAMPLES DOCS NOUSERINIT MANPAGES TEST
 OPTIONS_SINGLE=		LISP
-OPTIONS_SINGLE_LISP=	CCL CMUCL SBCL
+OPTIONS_SINGLE_LISP=	CCL CMUCL ECL SBCL
 
-OPTIONS_DEFAULT=	NOUSERINIT MANPAGES SBCL
+OPTIONS_DEFAULT=	ECL NOUSERINIT MANPAGES
 OPTIONS_SUB=		yes
 
 CCL_DESC=		Build with Clozure Common Lisp
@@ -50,6 +49,18 @@
 CMUCL_CONFIGURE_ON=	--enable-cmucl
 CMUCL_PLIST_SUB=	BINDIR=binary-cmucl BINNAME=maxima_core
 
+ECL_DESC=		Build with ECL (Embeddable Common-Lisp)
+ECL_LIB_DEPENDS=	libecl.so:lang/ecl	\
+			libgmp.so:math/gmp	\
+			libffi.so:devel/libffi	\
+			libgc-threaded.so:devel/boehm-gc-threaded
+ECL_CONFIGURE_ON=	--enable-ecl
+ECL_CONFIGURE_ENV=	EMACS=no
+ECL_VARS=		SSP_UNSAFE=yes WITHOUT_NO_STRICT_ALIASING=yes
+ECL_MAKE_ENV=		MAKE=${GMAKE}
+# Bump PORTREVISION and change ECLVER after each ECL's upgrade!
+ECL_PLIST_SUB=		BINDIR=binary-ecl BINNAME=${PORTNAME} ECLVER=16.1.3
+
 NOUSERINIT_DESC=	Do not load user init file for lisp (only for sbcl)
 
 SBCL_DESC=		Build with Steel Bank Common Lisp
@@ -61,6 +72,9 @@
 TEST_TARGET=	check
 TEST_BUILD_DEPENDS=	gnuplot:math/gnuplot \
 			rlwrap:devel/rlwrap
+
+GET_ECLLIB=	ecl -eval "(princ (SI:GET-LIBRARY-PATHNAME))" -eval "(quit)"
+
 post-patch:
 	${GREP} -Fe '.core' -l -r ${WRKSRC} | ${XARGS} ${REINPLACE_CMD} 's;\.core;_core;g'
 	${FIND} -X ${WRKSRC}/interfaces/xmaxima -name 'Makefile.in' | ${XARGS} ${REINPLACE_CMD} "s;tclsh;${TCLSH};g"
@@ -70,6 +84,9 @@
 post-patch-TEST-off:
 	${REINPLACE_CMD} 's;tests;;' ${WRKSRC}/Makefile.am
 
+pre-build-ECL-on:
+	${REINPLACE_CMD} '/autoconf-ld-flags/s| ")|")|' ${WRKSRC}/src/autoconf-variables.lisp
+
 pre-build-CCL-on:
 	cd ${WRKSRC}/src/ && ${MKDIR} binary-ccl && ${LN} -s binary-ccl binary-openmcl
 
@@ -96,4 +113,9 @@
 post-install-NOUSERINIT-on:
 	${REINPLACE_CMD} 's;--end-runtime-options;--end-runtime-options --no-userinit;' ${STAGEDIR}${PREFIX}/bin/maxima
 
+post-install-ECL-on:
+	${MKDIR} ${STAGEDIR}$$(${GET_ECLLIB})
+	${INSTALL_DATA} ${WRKSRC}/src/binary-ecl/maxima-package.fas	\
+		${STAGEDIR}$$(${GET_ECLLIB})maxima.fas
+
 .include <bsd.port.mk>
Index: math/maxima/pkg-plist
===================================================================
--- math/maxima/pkg-plist	(revision 533125)
+++ math/maxima/pkg-plist	(working copy)
@@ -1,6 +1,7 @@
 bin/maxima
 bin/rmaxima
 bin/xmaxima
+%%ECL%%lib/ecl-%%ECLVER%%/maxima.fas
 lib/maxima/%%PORTVERSION%%/%%BINDIR%%/%%BINNAME%%
 %%CMUCL%%lib/maxima/%%PORTVERSION%%/%%BINDIR%%/lisp
 libexec/maxima/%%PORTVERSION%%/mgnuplot
@@ -31,3 +32,4 @@
 share/pixmaps/net.sourceforge.maxima.svg
 share/pixmaps/text-x-maxima-out.svg
 share/pixmaps/text-x-maximasession.svg
+%%ECL%%@dir lib/maxima/%%PORTVERSION%%/%%BINDIR%%