diff -uNr dmalloc/Makefile dmalloc-new/Makefile
--- dmalloc/Makefile	2019-10-03 07:49:27.000000000 +1300
+++ dmalloc-new/Makefile	2020-12-25 19:14:55.199450000 +1300
@@ -2,21 +2,21 @@
 # $FreeBSD: head/devel/dmalloc/Makefile 513602 2019-10-02 18:49:27Z antoine $
 
 PORTNAME=	dmalloc
-PORTVERSION=	5.5.2
-PORTREVISION=	1
+PORTVERSION=	5.6.4
 CATEGORIES=	devel
-# Version 5.5.2 is only available at this URL
 MASTER_SITES=	http://dmalloc.com/releases/
-EXTRACT_SUFX=	.tgz
 
 MAINTAINER=	mjl@luckie.org.nz
 COMMENT=	Portable debug memory allocation library
 
+LICENSE=	ISCL
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--enable-threads --enable-shlib
 GNU_CONFIGURE_PREFIX=	"${STAGEDIR}${PREFIX}"
 CONFIGURE_ENV=	INSTALL_PROGRAM="${INSTALL_DATA}"
 CFLAGS=		-fPIC
+USES=		tar:tgz
 USE_LDCONFIG=	yes
 MAKE_JOBS_UNSAFE=	yes
 
diff -uNr dmalloc/distinfo dmalloc-new/distinfo
--- dmalloc/distinfo	2014-01-23 04:30:13.000000000 +1300
+++ dmalloc-new/distinfo	2020-12-25 16:27:52.135449000 +1300
@@ -1,2 +1,3 @@
-SHA256 (dmalloc-5.5.2.tgz) = d3be5c6eec24950cb3bd67dbfbcdf036f1278fae5fd78655ef8cdf9e911e428a
-SIZE (dmalloc-5.5.2.tgz) = 666608
+TIMESTAMP = 1608866872
+SHA256 (dmalloc-5.6.4.tgz) = be790d71e6a0046312ea899c3f14f00c899c6b37868602f49531bc0fd474d274
+SIZE (dmalloc-5.6.4.tgz) = 320579
diff -uNr dmalloc/files/patch-Makefile.in dmalloc-new/files/patch-Makefile.in
--- dmalloc/files/patch-Makefile.in	2019-06-12 10:30:00.000000000 +1200
+++ dmalloc-new/files/patch-Makefile.in	2020-12-25 18:57:46.555614000 +1300
@@ -1,6 +1,6 @@
---- Makefile.in.orig	2007-05-14 10:26:14.000000000 -0700
-+++ Makefile.in	2019-06-11 15:24:34.190572000 -0700
-@@ -41,7 +41,7 @@ LIBRARY	= lib$(MODULE).a
+--- Makefile.in.orig	2020-12-25 06:51:42.000000000 +1300
++++ Makefile.in	2020-12-25 18:56:35.672326000 +1300
+@@ -43,7 +43,7 @@
  
  # thread version of the library
  LIB_TH	= lib$(MODULE)th.a
@@ -9,7 +9,7 @@
  @TH_ON@BUILD_ALL_1 = threads
  @TH_ON@INSTALL_LIB_1 = installth
  @SL_ON@BUILD_THREADS_1 = $(LIB_TH_SL)
-@@ -51,7 +51,7 @@ LIB_TH_SL = lib$(MODULE)th.@shlibext@
+@@ -53,7 +53,7 @@
  
  # C++ version of the library
  LIB_CXX	= lib$(MODULE)xx.a
@@ -18,7 +18,7 @@
  @CXX_ON@BUILD_ALL_3 = $(LIB_CXX)
  @CXX_ON@INSTALL_LIB_3 = installcxx
  @SL_ON@BUILD_CXX_3 = $(LIB_CXX_SL)
-@@ -61,7 +61,7 @@ LIB_CXX_SL = lib$(MODULE)xx.@shlibext@
+@@ -63,7 +63,7 @@
  
  # threads + C++
  LIB_TH_CXX = lib$(MODULE)thcxx.a
@@ -27,7 +27,7 @@
  @TH_ON@@CXX_ON@BUILD_ALL_5 = $(LIB_TH_CXX)
  @TH_ON@@CXX_ON@INSTALL_LIB_5 = installthcxx
  @TH_ON@BUILD_CXX_5 = $(LIB_TH_CXX)
-@@ -76,7 +76,7 @@ LIB_TH_CXX_SL = lib$(MODULE)thcxx.@shlibext@
+@@ -78,7 +78,7 @@
  @CXX_ON@@SL_ON@INSTALL_THREADS_6 = installthcxxsl
  
  # shared versions of the libraries
@@ -36,7 +36,7 @@
  @SL_ON@BUILD_ALL_7 = $(LIB_SL)
  @SL_ON@INSTALL_LIB_7 = installsl
  @SL_ON@BUILD_TH_CXX_7 = $(LIB_TH_CXX_SL)
-@@ -218,7 +218,6 @@ installsl : $(LIB_SL)
+@@ -222,12 +222,11 @@
  installlib : $(INSTALL_LIB)
  	$(srcdir)/mkinstalldirs $(libdir)
  	$(INSTALL_PROGRAM) $(LIBRARY) $(libdir)
@@ -44,54 +44,32 @@
  @SL_OFF@	@echo "Enter 'make installsl' to install $(LIB_SL) in $(shlibdir)"
  @CXX_OFF@	@echo "Enter 'make installcxx' to install the C++ library"
  @TH_OFF@	@echo "Enter 'make installth' to install thread library"
-@@ -257,7 +256,7 @@ shlib : $(BUILD_SL)
- # via: http://256.com/gray/email.html
- $(LIB_SL) : $(LIBRARY)
- 	rm -f $@ $@.t
--	@shlinkargs@ $(LIBRARY) $(OBJS) $(NORMAL_OBJS)
-+	@shlinkargs@ $(LIBRARY)
- 	mv $@.t $@
  
- $(LIBRARY) : $(OBJS) $(NORMAL_OBJS)
-@@ -270,7 +269,7 @@ $(LIB_TH) : $(OBJS) $(THREAD_OBJS)
+-installdocs : $(srcdir)/$(HTMLFILE) $(srcdir)/$(INFOFILE)
++installdocs : $(srcdir)/$(HTMLFILE) $(INFOFILE)
+ 	$(srcdir)/mkinstalldirs $(docdir)
+ 	$(INSTALL_DATA) $(srcdir)/$(HTMLFILE) $(docdir)
+ 	$(INSTALL_DATA) $(srcdir)/$(INFOFILE) $(docdir)
+@@ -253,7 +252,7 @@
  
- $(LIB_TH_SL) : $(LIB_TH)
+ $(INFOFILE) : $(srcdir)/dmalloc.texi
  	rm -f $@ $@.t
--	@shlinkargs@ $(LIB_TH) $(OBJS) $(THREAD_OBJS)
-+	@shlinkargs@ $(LIB_TH)
+-	makeinfo -o $@.t --fill-column=100 --no-split $<
++	makeinfo -o $@.t --fill-column=100 --no-split $(srcdir)/dmalloc.texi 
  	mv $@.t $@
  
- $(LIB_CXX) : $(OBJS) $(NORMAL_OBJS) $(CXX_OBJS)
-@@ -279,7 +278,7 @@ $(LIB_CXX) : $(OBJS) $(NORMAL_OBJS) $(CXX_OBJS)
+ INSTALL.txt : $(INFOFILE)
+@@ -340,8 +339,7 @@
  
- $(LIB_CXX_SL) : $(LIB_CXX)
- 	rm -f $@ $@.t
--	@shlinkargs@ $(LIB_CXX) $(OBJS) $(NORMAL_OBJS) $(CXX_OBJS)
-+	@shlinkargs@ $(LIB_CXX)
- 	mv $@.t $@
- 
- $(LIB_TH_CXX) : $(OBJS) $(THREAD_OBJS) $(CXX_OBJS)
-@@ -288,7 +287,7 @@ $(LIB_TH_CXX) : $(OBJS) $(THREAD_OBJS) $(CXX_OBJS)
- 
- $(LIB_TH_CXX_SL) : $(LIB_TH_CXX)
- 	rm -f $@ $@.t
--	@shlinkargs@ $(LIB_TH_CXX) $(OBJS) $(THREAD_OBJS) $(CXX_OBJS)
-+	@shlinkargs@ $(LIB_TH_CXX)
- 	mv $@.t $@
- 
- threadssl : $(LIB_TH_SL)
-@@ -311,9 +310,8 @@ utils : $(UTIL)
- 
- $(UTIL) : $(UTIL).o dmalloc_argv.o compat.o env.o
+ $(UTIL) : $(UTIL).o dmalloc_argv.o compat.o env.o append.o
  	rm -f $@
--	$(CC) $(LDFLAGS) -o $(A_OUT) $(UTIL).o dmalloc_argv.o compat.o env.o \
-+	$(CC) $(LDFLAGS) -o $@ $(UTIL).o dmalloc_argv.o compat.o env.o \
- 		$(LIBS)
+-	$(CC) $(LDFLAGS) -o $(A_OUT) $(UTIL).o dmalloc_argv.o compat.o env.o append.o $(LIBS)
 -	mv $(A_OUT) $@
++	$(CC) $(LDFLAGS) -o $@ $(UTIL).o dmalloc_argv.o compat.o env.o append.o $(LIBS)
  
  # special _th versions of objects with the LOCK_THREADS variable defined to 1
  chunk_th.o : $(srcdir)/chunk.c
-@@ -335,13 +333,11 @@ tests : $(TEST) $(TEST_FC)
+@@ -360,13 +358,11 @@
  
  $(TEST) : $(TEST).o dmalloc_argv.o $(LIBRARY)
  	rm -f $@
@@ -105,5 +83,5 @@
 -	mv $(A_OUT) $@
 +	$(CC) $(LDFLAGS) -o $@ $(TEST_FC).o dmalloc_argv.o $(LIBRARY)
  
- check light : $(TEST) $(TEST_FC)
+ check : $(TEST) $(TEST_FC)
  	./$(TEST_FC) -s
diff -uNr dmalloc/files/patch-configure dmalloc-new/files/patch-configure
--- dmalloc/files/patch-configure	2014-01-23 06:40:44.000000000 +1300
+++ dmalloc-new/files/patch-configure	2020-11-24 17:50:50.484645000 +1300
@@ -1,11 +1,11 @@
---- configure	2007-07-06 20:01:39.000000000 +0300
-+++ configure_new	2007-07-06 16:59:48.000000000 +0300
-@@ -2643,7 +2643,7 @@
+--- configure.orig	2020-11-23 12:01:14.000000000 +1300
++++ configure	2020-11-24 17:49:38.337241000 +1300
+@@ -3490,7 +3490,7 @@
  
  
  # see if we actually have a CXX program
 -if test "$ac_cv_prog_CXX" = "" -o ! -x "$ac_cv_prog_CXX"; then
 +if test "$CXX" = ""; then
-     { echo "$as_me:$LINENO: WARNING: could not find C++ compiler $ac_cv_prog_CXX" >&5
- echo "$as_me: WARNING: could not find C++ compiler $ac_cv_prog_CXX" >&2;}
+     { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: could not find C++ compiler $ac_cv_prog_CXX" >&5
+ $as_echo "$as_me: WARNING: could not find C++ compiler $ac_cv_prog_CXX" >&2;}
      enable_cxx=no
diff -uNr dmalloc/pkg-plist dmalloc-new/pkg-plist
--- dmalloc/pkg-plist	2014-10-27 23:10:58.000000000 +1300
+++ dmalloc-new/pkg-plist	2020-12-25 19:03:29.741808000 +1300
@@ -13,5 +13,4 @@
 lib/libdmallocxx.so
 lib/libdmallocxx.so.1
 %%PORTDOCS%%%%DOCSDIR%%/dmalloc.html
-%%PORTDOCS%%%%DOCSDIR%%/dmalloc.pdf
-%%PORTDOCS%%%%DOCSDIR%%/dmalloc.texi
+%%PORTDOCS%%%%DOCSDIR%%/dmalloc.info