math/ump: Finish original "fix on current"

Back on 10 OCT 2014 when the PR was opened, this unmaintained port
didn't build on current.  The PR stagnanted due to an unanswered
question and the port was eventually fixed by amdmi3 on 21 NOV.  Let's
go ahead and make the remaining changes which include adding a license
(GPLv2), defining desktop entries, tweaking pkg-descr, and make real_frac
function match its changed header (for clang).

PR:		194497
Submitted by:	Ports Fury

math/ump/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	ump
 PORTVERSION=	0.8.6
-PORTREVISION=	9
+PORTREVISION=	10
 CATEGORIES=	math
 MASTER_SITES=	SF/u-m-p/u-m-p/${PORTVERSION}
 PKGNAMESUFFIX=	-math
@@ -11,7 +11,7 @@ PKGNAMESUFFIX=	-math
 MAINTAINER=	ports@FreeBSD.org
 COMMENT=	Graphical, easy to use math program
 
-CONFLICTS=	ump-1.[0-9]*
+LICENSE=	GPLv2
 
 USES=		gmake pkgconfig tar:bzip2
 USE_GNOME=	gtk20
@@ -20,15 +20,15 @@ USE_GL=		glu
 ALL_TARGET=	${PORTNAME}
 WRKSRC=		${WRKDIR}/${PORTNAME}-${PORTVERSION}
 
-MAKE_ENV+=	DATADIR="${DATADIR}"
+CONFLICTS=	ump-1.[0-9]*
 
-FIND_DIRS=	-type d
-FIND_DATA=	-type f
+DESKTOP_ENTRIES="Ump" "" "" "ump" "Education;Math;Science;GTK;" ""
 
 post-patch:
 	@${REINPLACE_CMD} -e 's|%%PREFIX%%|${PREFIX}|' ${WRKSRC}/src/main.cpp
 
 post-install:
-	${INSTALL_DATA} ${WRKSRC}/ump.conf ${STAGEDIR}${PREFIX}/etc/ump.conf.sample
+	${INSTALL_DATA} ${WRKSRC}/ump.conf \
+		${STAGEDIR}${PREFIX}/etc/ump.conf.sample
 
 .include <bsd.port.mk>

math/ump/files/patch-Makefile

@@ -7,7 +7,7 @@
 -BIN_DIR = /usr/bin
 -DATA_DIR = /usr/share/$(APP_NAME)
 +BIN_DIR = $(PREFIX)/bin
-+DATA_DIR = $(DATADIR)
++DATA_DIR = $(PREFIX)/share/$(APP_NAME)
  
  
  ## One of these three flags must be uncommented

math/ump/files/patch-src__real.cpp

@@ -0,0 +1,11 @@
+--- src/real.cpp.orig
++++ src/real.cpp
+@@ -764,7 +764,7 @@
+ }
+ 
+ // converts a Real to a fraction
+-Real frac(const Real &val, int32 highest_bottom_value) throw(error_obj)
++Real frac(const Real &val, int32 highest_bottom_value = 1000) throw(error_obj)
+ {
+ 	if( highest_bottom_value < 1 )
+ 		THROW_ERROR( ErrorType_Domain, _("Domain error: Value out of range.") );

math/ump/pkg-descr

@@ -1,5 +1,4 @@
-ump is a graphical, easy to use math program, which works with complex numbers,
-matrices, functions and much more.
+ump is a graphical, easy to use math program, which works with complex
+numbers, matrices, functions and much more.
 
-Author:	Mattias Hultgren
 WWW: http://u-m-p.sourceforge.net/