diff --git a/.portsignore b/.portsignore
index 77ed6cc858d5..1b76840d35dc 100644
--- a/.portsignore
+++ b/.portsignore
@@ -3807,6 +3807,7 @@ mail/vqadmin
 mail/xfce4-mailwatch-plugin
 math/acalc
 math/analitza
+math/ann
 math/apc
 math/asymptote
 math/atlas
diff --git a/math/Makefile b/math/Makefile
index b94af60305d1..3535615203be 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -168,7 +168,6 @@
     SUBDIR += amath
     SUBDIR += ambit
     SUBDIR += amgcl
-    SUBDIR += ann
     SUBDIR += annoy
     SUBDIR += antic
     SUBDIR += apache-commons-math
diff --git a/math/ann/Makefile b/math/ann/Makefile
deleted file mode 100644
index dd49b5850272..000000000000
--- a/math/ann/Makefile
+++ /dev/null
@@ -1,25 +0,0 @@
-PORTNAME=	ann
-PORTVERSION=	1.1.2
-PORTREVISION=	1
-CATEGORIES=	math science
-MASTER_SITES=	http://www.cs.umd.edu/~mount/ANN/Files/1.1.2/
-DISTNAME=	ann_1.1.2
-
-MAINTAINER=	tzhuan@csie.org
-COMMENT=	Library for Approximate Nearest Neighbor Searching
-WWW=		https://www.cs.umd.edu/~mount/ANN/
-
-USES=		gmake
-USE_CXXSTD=	c++14
-USE_LDCONFIG=	yes
-
-post-install:
-	${INSTALL_LIB} ${WRKSRC}/lib/libann.so.0 ${STAGEDIR}${PREFIX}/lib
-	${INSTALL_DATA} ${WRKSRC}/lib/libann.a ${STAGEDIR}${PREFIX}/lib
-	${LN} -fs libann.so.0 ${STAGEDIR}${PREFIX}/lib/libann.so
-	${MKDIR} ${STAGEDIR}${PREFIX}/include/ANN
-	${INSTALL_DATA} ${WRKSRC}/include/ANN/* ${STAGEDIR}${PREFIX}/include/ANN
-	${MKDIR} ${STAGEDIR}${DOCSDIR}
-	${INSTALL_DATA} ${WRKSRC}/doc/ANNmanual.pdf ${STAGEDIR}${DOCSDIR}
-
-.include <bsd.port.mk>
diff --git a/math/ann/distinfo b/math/ann/distinfo
deleted file mode 100644
index 57c554783132..000000000000
--- a/math/ann/distinfo
+++ /dev/null
@@ -1,2 +0,0 @@
-SHA256 (ann_1.1.2.tar.gz) = eea03f2e224b66813226d775053316675375dcec45bd263674c052d9324a49a5
-SIZE (ann_1.1.2.tar.gz) = 590517
diff --git a/math/ann/files/patch-Makefile b/math/ann/files/patch-Makefile
deleted file mode 100644
index d9309c87d7d5..000000000000
--- a/math/ann/files/patch-Makefile
+++ /dev/null
@@ -1,149 +0,0 @@
---- Makefile.orig	2010-01-28 12:40:01.000000000 +0800
-+++ Makefile	2010-04-23 20:57:18.091096908 +0800
-@@ -1,115 +1,32 @@
--#-----------------------------------------------------------------------------
--# Top-level Makefile for ANN.
--#
--# ANN: Approximate Nearest Neighbors
--# Version: 1.1 05/03/05
--#-----------------------------------------------------------------------------
--# Copyright (c) 1997-2005 University of Maryland and Sunil Arya and
--# David Mount.  All Rights Reserved.
--# 
--# This software and related documentation is part of the Approximate
--# Nearest Neighbor Library (ANN).  This software is provided under
--# the provisions of the Lesser GNU Public License (LGPL).  See the
--# file ../ReadMe.txt for further information.
--# 
--# The University of Maryland (U.M.) and the authors make no
--# representations about the suitability or fitness of this software for
--# any purpose.  It is provided "as is" without express or implied
--# warranty.
--#-----------------------------------------------------------------------------
--# Revision 0.1  09/06/97
--#	alpha release
--# Revision 0.2  06/26/98
--#	Minor changes to fix compilation errors on SGI systems.
--# Revision 1.0  04/01/05
--#	Initial release (finally!)
--#	Added linux-g++ target
--# Revision 1.1  05/03/05
--#	Added macosx-g++ target
--#-----------------------------------------------------------------------------
--
--#-----------------------------------------------------------------------------
--# default: list the options
--# The following legacy targets are also available.
--#	make sunos4		for Sun with SunOS 4.x
--#	make sunos4-g++		for Sun with SunOS 4.x and g++
--#	make alpha-g++		for DEC Alpha and g++
--# The following targets are used for internal development only
--#	make authors-debug	author's debugging
--#	make authors-perf	author's performance evaluations
--#	make distribution	author's generation of distribution file
--#-----------------------------------------------------------------------------
--default:
--	@echo "Enter one of the following:"
--	@echo "  make linux-g++            for Linux and g++"
--	@echo "  make macosx-g++           for Mac OS X and g++"
--	@echo "  make sunos5               for Sun with SunOS 5.x"
--	@echo "  make sunos5-sl            for Sun with SunOS 5.x, make shared libs"
--	@echo "  make sunos5-g++           for Sun with SunOS 5.x and g++"
--	@echo "  make sunos5-g++-sl        for Sun with SunOS 5.x, g++, make shared libs"
--	@echo "  make clean                remove .o files"
--	@echo "  make realclean            remove .o, library and executable files"
--	@echo " "
--	@echo "See file Makefile for other compilation options, such as disabling"
--	@echo "performance measurement code."
--
--#-----------------------------------------------------------------------------
--# main make entry point
--#-----------------------------------------------------------------------------
--alpha-g++ macosx-g++ linux-g++ sgi sunos4 sunos4-g++ sunos5 sunos5-g++ sunos5-g++-sl authors-debug authors-perf:
--	cd src ; $(MAKE) $@
--	cd test ; $(MAKE) $@
--	cd sample ; $(MAKE) $@
--	cd ann2fig ; $(MAKE) $@
--
--#-----------------------------------------------------------------------------
--# Remove .o files and core files
--#-----------------------------------------------------------------------------
-+CXXFLAGS+=-Iinclude -Isrc -fPIC
-+LDFLAGS+=
-+VPATH=src
-+SRCS=ANN.cpp \
-+	bd_fix_rad_search.cpp bd_pr_search.cpp bd_search.cpp bd_tree.cpp \
-+	brute.cpp perf.cpp kd_tree.cpp kd_util.cpp \
-+	kd_dump.cpp kd_fix_rad_search.cpp kd_pr_search.cpp kd_search.cpp kd_split.cpp 
-+OBJS=$(SRCS:.cpp=.o)
-+LIBDIR=lib
-+
-+ANN_SO=libann.so
-+ANN_A=libann.a
-+ANN_SONAME=$(ANN_SO).0
-+LIBANN_SO=$(LIBDIR)/$(ANN_SONAME)
-+LIBANN_A=$(LIBDIR)/$(ANN_A)
-+TARGETS=$(LIBANN_SO) $(LIBANN_A)
-+
-+all: $(TARGETS)
-+
-+install: all
-+
-+%.o: %.cpp
-+	$(CXX) $(CXXFLAGS) -c $< -o $@
-+
-+$(LIBANN_SO): $(OBJS)
-+	$(CXX) $^ -o $@ -shared -Wl,-soname,$(ANN_SONAME) $(LDFLAGS)
-+
-+$(LIBANN_A): $(OBJS)
-+	$(AR) rcs $@ $^
-+
- clean:
--	cd src ; $(MAKE) clean
--	cd test ; $(MAKE) clean
--	cd sample ; $(MAKE) clean
--	cd ann2fig ; $(MAKE) clean
--	cd doc ; $(MAKE) clean
--	cd MS_Win32; $(MAKE) clean
--	cd validate ; $(MAKE) clean
--
--#-----------------------------------------------------------------------------
--# Remove everthing that can be remade
--#-----------------------------------------------------------------------------
--realclean: 
--	-rm -f lib/*
--	-rm -f bin/*
--	cd src ; $(MAKE) realclean
--	cd test ; $(MAKE) realclean
--	cd sample ; $(MAKE) realclean
--	cd ann2fig ; $(MAKE) realclean
--	cd doc ; $(MAKE) realclean
--	cd MS_Win32; $(MAKE) realclean
--	cd validate ; $(MAKE) realclean
--
--#-----------------------------------------------------------------------------
--# Make distribution package (for use by authors only)
--#-----------------------------------------------------------------------------
--DISTR = ann_1.1.2
--
--distribution: realclean 
--	cd .. ; mv -f $(DISTR) $(DISTR)-old; mkdir $(DISTR)
--	cp Copyright.txt ../$(DISTR)
--	cp License.txt ../$(DISTR)
--	cp Make-config ../$(DISTR)
--	cp Makefile ../$(DISTR)
--	cp ReadMe.txt ../$(DISTR)
--	cp -r MS_Win32 ../$(DISTR)
--#	cd ..; mv -f $(DISTR)_MS_Win32_bin $(DISTR)_MS_Win32_bin-old
--	cp -r MS_Win32_bin ../$(DISTR)_MS_Win32_bin
--	cp -r bin ../$(DISTR)
--	cp -r include ../$(DISTR)
--	cp -r lib ../$(DISTR)
--	cp -r src ../$(DISTR)
--	cp -r test ../$(DISTR)
--	cp -r sample ../$(DISTR)
--	cp -r ann2fig ../$(DISTR)
--	cd ../$(DISTR); mkdir doc
--	cp doc/*.pdf ../$(DISTR)/doc
--#	cd .. ; tar -cfv $(DISTR).tar $(DISTR) ; gzip $(DISTR).tar
-+	rm -f $(TARGETS) $(OBJS)
diff --git a/math/ann/pkg-descr b/math/ann/pkg-descr
deleted file mode 100644
index 060d50605314..000000000000
--- a/math/ann/pkg-descr
+++ /dev/null
@@ -1,3 +0,0 @@
-ANN is a library written in C++, which supports data structures
-and algorithms for both exact and approximate nearest neighbor
-neighbor searching in arbitrarily high dimensions.
diff --git a/math/ann/pkg-plist b/math/ann/pkg-plist
deleted file mode 100644
index fb270eafc68c..000000000000
--- a/math/ann/pkg-plist
+++ /dev/null
@@ -1,7 +0,0 @@
-include/ANN/ANN.h
-include/ANN/ANNx.h
-include/ANN/ANNperf.h
-lib/libann.so.0
-lib/libann.so
-lib/libann.a
-%%DOCSDIR%%/ANNmanual.pdf