Add gringo - an advanced grounder to compute variable-free programs.

svn path=/head/; revision=339359

math/Makefile

@@ -159,6 +159,7 @@
     SUBDIR += graphthing
     SUBDIR += gretl
     SUBDIR += gri
+    SUBDIR += gringo
     SUBDIR += grpn
     SUBDIR += gsl
     SUBDIR += hs-Agda

math/gringo/Makefile

@@ -0,0 +1,27 @@
+# Created by: Vsevolod Stakhov <vsevolod@FreeBSD.org>
+# $FreeBSD$
+
+PORTNAME=	gringo
+PORTVERSION=	4.2.1
+DISTVERSIONSUFFIX=	-source
+CATEGORIES=	math devel
+MASTER_SITES=	${MASTER_SITE_SOURCEFORGE}
+MASTER_SITE_SUBDIR=	potassco/${PORTNAME}/${PORTVERSION}
+
+MAINTAINER=	vsevolod@FreeBSD.org
+COMMENT=	Grounding algorithm based on semi-naive database evaluation
+
+BUILD_DEPENDS=	re2c:${PORTSDIR}/devel/re2c
+
+USES=	scons lua:51+ bison
+
+MAKE_ARGS+=	${MAKE_ENV} WITH_LUA="lua-${LUA_VER}"
+CXXFLAGS+=	-std=c++11 -I${LUA_INCDIR}
+LDFLAGS+=	-L${LUA_LIBDIR}
+
+PLIST_FILES=	bin/${PORTNAME}
+
+do-install:
+	${INSTALL_PROGRAM} ${INSTALL_WRKSRC}/build/release/${PORTNAME} ${STAGEDIR}${PREFIX}/bin/${PORTNAME}
+
+.include <bsd.port.mk>

math/gringo/distinfo

@@ -0,0 +1,2 @@
+SHA256 (gringo-4.2.1-source.tar.gz) = 24da7958ca6c4f41a3df43ca786059926057289d5f01bfd22e6d9483977c0581
+SIZE (gringo-4.2.1-source.tar.gz) = 615728

math/gringo/pkg-descr

@@ -0,0 +1,6 @@
+Current answer set solvers work on variable-free programs. Hence, a grounder is
+needed that, given an input program with first-order variables, computes an
+equivalent ground (variable-free) program. Gringo is such a grounder. Its
+output can be processed further with clasp.
+
+WWW: http://potassco.sourceforge.net/