diff -urN /usr/ports/lang/maude.old/Makefile /usr/ports/lang/maude/Makefile
--- /usr/ports/lang/maude.old/Makefile	2014-08-25 12:01:51.000000000 +0200
+++ /usr/ports/lang/maude/Makefile	2014-09-03 17:46:27.000000000 +0200
@@ -3,6 +3,7 @@
 
 PORTNAME=	maude
 PORTVERSION=	2.6
+PORTREVISION=	1
 CATEGORIES=	lang
 MASTER_SITES=	http://maude.cs.uiuc.edu/versions/${PORTVERSION}/
 DISTNAME=	Maude-${PORTVERSION}
@@ -10,6 +11,10 @@
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	High-performance reflective language
 
+LICENSE=	GPLv2
+LICENSE_FILE=	${WRKSRC}/COPYING
+
+BUILD_DEPENDS=	${LOCALBASE}/bin/flex:${PORTSDIR}/textproc/flex
 LIB_DEPENDS=	libbdd.so:${PORTSDIR}/science/buddy \
 		libtecla.so:${PORTSDIR}/devel/libtecla \
 		libgmp.so:${PORTSDIR}/math/gmp \
@@ -22,16 +27,22 @@
 CPPFLAGS+=	-I${LOCALBASE}/include
 LDFLAGS+=	-L${LOCALBASE}/lib
 CONFIGURE_ARGS=	--datadir=${DATADIR}
+MAKE_JOBS_UNSAFE=	yes
 
 FULL_MAUDE_VER=	26b
 
-OPTIONS_DEFINE=	FULL_MAUDE
+OPTIONS_DEFINE=	DOCS FULL_MAUDE
 OPTIONS_DEFAULT=	FULL_MAUDE
 FULL_MAUDE_DESC=	Install full-maude${FULL_MAUDE_VER}
 
-NO_STAGE=	yes
+PORTDOCS=	AUTHORS COPYING ChangeLog INSTALL NEWS README
+
 .include <bsd.port.options.mk>
 
+.if ${OSVERSION} > 1000000
+EXTRA_PATCHES+=	${FILESDIR}/extra-patch-build
+.endif
+
 .if ${PORT_OPTIONS:MFULL_MAUDE}
 MASTER_SITES+=	http://maude.lcc.uma.es/FullMaude/FM${FULL_MAUDE_VER}/:fm
 FULL_MAUDE=	full-maude${FULL_MAUDE_VER}.maude
@@ -56,7 +67,12 @@
 
 .if ${PORT_OPTIONS:MFULL_MAUDE}
 post-install:
-	${INSTALL_DATA} ${WRKDIR}/${FULL_MAUDE} ${DATADIR}
+	${INSTALL_DATA} ${WRKDIR}/${FULL_MAUDE} ${STAGEDIR}${DATADIR}
+.endif
+
+.if ${PORT_OPTIONS:MDOCS}
+	${MKDIR} ${STAGEDIR}${DOCSDIR}
+	cd ${WRKSRC} && ${INSTALL_DATA} ${PORTDOCS} ${STAGEDIR}${DOCSDIR}
 .endif
 
 .include <bsd.port.mk>
diff -urN /usr/ports/lang/maude.old/files/extra-patch-build /usr/ports/lang/maude/files/extra-patch-build
--- /usr/ports/lang/maude.old/files/extra-patch-build	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/extra-patch-build	2014-09-03 17:20:39.000000000 +0200
@@ -0,0 +1,22 @@
+--- ./src/Mixfix/lexerAux.cc.orig	2014-09-03 02:54:57.000000000 +0200
++++ ./src/Mixfix/lexerAux.cc	2014-09-03 02:55:40.000000000 +0200
+@@ -35,7 +35,7 @@
+ bool fakeNewlineStack[MAX_IN_DEPTH];
+ 
+ void
+-getInput(char* buf, int& result, int max_size)
++getInput(char* buf, size_t& result, size_t max_size)
+ {
+   result = YY_NULL;
+   if (UserLevelRewritingContext::interrupted())
+--- ./src/Mixfix/lexerAux.hh.orig	2014-09-03 02:56:33.000000000 +0200
++++ ./src/Mixfix/lexerAux.hh	2014-09-03 02:57:05.000000000 +0200
+@@ -27,7 +27,7 @@
+ //extern int inStackPtr;
+ //extern YY_BUFFER_STATE inStack[];
+ 
+-void getInput(char* buf, int& result, int max_size);
++void getInput(char* buf, size_t& result, size_t max_size);
+ void lexerIdMode();
+ void lexerTokenTreeMode(int terminatingTokens);
+ void lexerCmdMode();
diff -urN /usr/ports/lang/maude.old/files/patch-src__BuiltIn__stringOpSymbol.cc /usr/ports/lang/maude/files/patch-src__BuiltIn__stringOpSymbol.cc
--- /usr/ports/lang/maude.old/files/patch-src__BuiltIn__stringOpSymbol.cc	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__BuiltIn__stringOpSymbol.cc	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,11 @@
+--- ./src/BuiltIn/stringOpSymbol.cc.orig	2014-09-03 02:36:06.000000000 +0200
++++ ./src/BuiltIn/stringOpSymbol.cc	2014-09-03 02:32:45.000000000 +0200
+@@ -472,7 +472,7 @@
+ 		const mpz_class& n0 = succSymbol->getNat(a0);
+ 		if (n0 <= 255)
+ 		  {
+-		    char c = n0.get_si();
++		    char c[2] = { n0.get_si(), 0 };
+ 		    return rewriteToString(subject, context, crope(c));
+ 		  }
+ 	      }
diff -urN /usr/ports/lang/maude.old/files/patch-src__Mixfix__bottom.yy /usr/ports/lang/maude/files/patch-src__Mixfix__bottom.yy
--- /usr/ports/lang/maude.old/files/patch-src__Mixfix__bottom.yy	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__Mixfix__bottom.yy	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,11 @@
+--- ./src/Mixfix/bottom.yy.orig	2014-09-03 02:49:14.000000000 +0200
++++ ./src/Mixfix/bottom.yy	2014-09-03 02:50:56.000000000 +0200
+@@ -23,7 +23,7 @@
+ %%
+ 
+ static void
+-yyerror(char *s)
++yyerror(UserLevelRewritingContext::ParseResult *parseResult, char *s)
+ {
+   if (!(UserLevelRewritingContext::interrupted()))
+     IssueWarning(LineNumber(lineNumber) << ": " << s);
diff -urN /usr/ports/lang/maude.old/files/patch-src__Mixfix__commands.yy /usr/ports/lang/maude/files/patch-src__Mixfix__commands.yy
--- /usr/ports/lang/maude.old/files/patch-src__Mixfix__commands.yy	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__Mixfix__commands.yy	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,17 @@
+--- ./src/Mixfix/commands.yy.orig	2014-09-03 02:51:54.000000000 +0200
++++ ./src/Mixfix/commands.yy	2014-09-03 02:53:05.000000000 +0200
+@@ -23,12 +23,12 @@
+ /*
+  *	Commands.
+  */
+-command		:	KW_SELECT		{ lexBubble(END_COMMAND, 1) }
++command		:	KW_SELECT		{ lexBubble(END_COMMAND, 1); }
+ 			endBubble
+ 			{
+ 			  interpreter.setCurrentModule(lexerBubble);
+ 			}
+-		|	KW_DUMP			{ lexBubble(END_COMMAND, 1) }
++		|	KW_DUMP			{ lexBubble(END_COMMAND, 1); }
+ 			endBubble
+ 			{
+ 			  if (interpreter.setCurrentModule(lexerBubble))
diff -urN /usr/ports/lang/maude.old/files/patch-src__Mixfix__interact.cc /usr/ports/lang/maude/files/patch-src__Mixfix__interact.cc
--- /usr/ports/lang/maude.old/files/patch-src__Mixfix__interact.cc	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__Mixfix__interact.cc	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,18 @@
+--- ./src/Mixfix/interact.cc.orig	2014-09-03 02:53:35.000000000 +0200
++++ ./src/Mixfix/interact.cc	2014-09-03 02:54:14.000000000 +0200
+@@ -25,13 +25,14 @@
+ //
+ #include <signal.h>
+ 
++#include "surface.h"
++
+ bool UserLevelRewritingContext::interactiveFlag = true;
+ bool UserLevelRewritingContext::ctrlC_Flag = false;
+ bool UserLevelRewritingContext::stepFlag = false;
+ bool UserLevelRewritingContext::abortFlag = false;
+ int UserLevelRewritingContext::debugLevel = 0;
+ 
+-int yyparse(void*);
+ void cleanUpParser();
+ void cleanUpLexer();
+ 
diff -urN /usr/ports/lang/maude.old/files/patch-src__Mixfix__modules.yy /usr/ports/lang/maude/files/patch-src__Mixfix__modules.yy
--- /usr/ports/lang/maude.old/files/patch-src__Mixfix__modules.yy	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__Mixfix__modules.yy	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,11 @@
+--- ./src/Mixfix/modules.yy.orig	2014-09-03 02:57:44.000000000 +0200
++++ ./src/Mixfix/modules.yy	2014-09-03 02:58:03.000000000 +0200
+@@ -247,7 +247,7 @@
+ 			  //	press on.
+ 			  //
+ 			  opDescription = lexerBubble;
+-			  lexBubble(END_STATEMENT, 1)
++			  lexBubble(END_STATEMENT, 1);
+ 			}
+ 			endBubble
+ 			{
diff -urN /usr/ports/lang/maude.old/files/patch-src__Mixfix__token.cc /usr/ports/lang/maude/files/patch-src__Mixfix__token.cc
--- /usr/ports/lang/maude.old/files/patch-src__Mixfix__token.cc	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__Mixfix__token.cc	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,11 @@
+--- ./src/Mixfix/token.cc.orig	2014-09-03 02:58:50.000000000 +0200
++++ ./src/Mixfix/token.cc	2014-09-03 02:59:18.000000000 +0200
+@@ -632,7 +632,7 @@
+ 	      }
+ 	  }
+ 	}
+-      result.append(c);
++      result.push_back(c);
+       seenBackslash = false;
+     }
+   CantHappen("bad end to string");
diff -urN /usr/ports/lang/maude.old/files/patch-src__Mixfix__top.yy /usr/ports/lang/maude/files/patch-src__Mixfix__top.yy
--- /usr/ports/lang/maude.old/files/patch-src__Mixfix__top.yy	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__Mixfix__top.yy	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,25 @@
+--- ./src/Mixfix/top.yy.orig	2014-09-03 03:00:02.000000000 +0200
++++ ./src/Mixfix/top.yy	2014-09-03 03:02:15.000000000 +0200
+@@ -59,7 +59,6 @@
+ #define store(token)		tokenSequence.append(token)
+ #define fragClear()		fragments.contractTo(0);
+ #define fragStore(token)	fragments.append(token)
+-#define YYPARSE_PARAM	parseResult
+ #define PARSE_RESULT	(*((UserLevelRewritingContext::ParseResult*) parseResult))
+ 
+ #define CM		interpreter.getCurrentModule()
+@@ -91,12 +90,13 @@
+ Int64 number;
+ Int64 number2;
+ 
+-static void yyerror(char *s);
++static void yyerror(UserLevelRewritingContext::ParseResult *parseResult, char *s);
+ 
+ void cleanUpModuleExpression();
+ void cleanUpParser();
+ void missingSpace(const Token& token);
+ %}
++%parse-param { UserLevelRewritingContext::ParseResult *parseResult }
+ %pure_parser
+ 
+ %union
diff -urN /usr/ports/lang/maude.old/files/patch-src__ObjectSystem__configSymbol.hh /usr/ports/lang/maude/files/patch-src__ObjectSystem__configSymbol.hh
--- /usr/ports/lang/maude.old/files/patch-src__ObjectSystem__configSymbol.hh	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__ObjectSystem__configSymbol.hh	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,11 @@
+--- ./src/ObjectSystem/configSymbol.hh.orig	2014-09-03 02:37:37.000000000 +0200
++++ ./src/ObjectSystem/configSymbol.hh	2014-09-03 02:38:05.000000000 +0200
+@@ -50,7 +50,7 @@
+ private:
+   struct symbolLt
+   {
+-    bool operator()(const Symbol* d1, const Symbol* d2)
++    bool operator()(const Symbol* d1, const Symbol* d2) const
+     {
+       return d1->compare(d2) < 0;
+     }
diff -urN /usr/ports/lang/maude.old/files/patch-src__ObjectSystem__objectMap.cc /usr/ports/lang/maude/files/patch-src__ObjectSystem__objectMap.cc
--- /usr/ports/lang/maude.old/files/patch-src__ObjectSystem__objectMap.cc	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__ObjectSystem__objectMap.cc	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,11 @@
+--- ./src/ObjectSystem/objectMap.cc.orig	2014-09-03 02:39:09.000000000 +0200
++++ ./src/ObjectSystem/objectMap.cc	2014-09-03 02:39:20.000000000 +0200
+@@ -50,7 +50,7 @@
+ 
+ struct ConfigSymbol::dagNodeLt
+ {
+-  bool operator()(const DagNode* d1, const DagNode* d2)
++  bool operator()(const DagNode* d1, const DagNode* d2) const
+     {
+       return d1->compare(d2) < 0;
+     }
diff -urN /usr/ports/lang/maude.old/files/patch-src__ObjectSystem__objectSystemRewritingContext.hh /usr/ports/lang/maude/files/patch-src__ObjectSystem__objectSystemRewritingContext.hh
--- /usr/ports/lang/maude.old/files/patch-src__ObjectSystem__objectSystemRewritingContext.hh	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__ObjectSystem__objectSystemRewritingContext.hh	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,11 @@
+--- ./src/ObjectSystem/objectSystemRewritingContext.hh.orig	2014-09-03 02:40:31.000000000 +0200
++++ ./src/ObjectSystem/objectSystemRewritingContext.hh	2014-09-03 02:40:48.000000000 +0200
+@@ -62,7 +62,7 @@
+ private:
+   struct dagNodeLt
+   {
+-    bool operator()(const DagNode* d1, const DagNode* d2)
++    bool operator()(const DagNode* d1, const DagNode* d2) const
+     {
+       return d1->compare(d2) < 0;
+     }
diff -urN /usr/ports/lang/maude.old/files/patch-src__Utility__ropeStuff.hh /usr/ports/lang/maude/files/patch-src__Utility__ropeStuff.hh
--- /usr/ports/lang/maude.old/files/patch-src__Utility__ropeStuff.hh	1970-01-01 01:00:00.000000000 +0100
+++ /usr/ports/lang/maude/files/patch-src__Utility__ropeStuff.hh	2014-09-03 10:04:06.000000000 +0200
@@ -0,0 +1,20 @@
+--- ./src/Utility/ropeStuff.hh.orig	2014-09-03 02:27:15.000000000 +0200
++++ ./src/Utility/ropeStuff.hh	2014-09-03 02:28:58.000000000 +0200
+@@ -25,6 +25,11 @@
+ //
+ #ifndef _ropeStuff_hh_
+ #define _ropeStuff_hh_
++#include <cstddef>
++#ifdef _LIBCPP_VERSION
++#include <string>
++typedef std::string crope;
++#else
+ #ifdef __GNUC__
+   #if __GNUC__ < 3
+     #include <rope.h>
+@@ -50,3 +55,5 @@
+ #include <rope>
+ #endif
+ #endif
++
++#endif