reinit the tree, so we can have metadata

8 files changed, 504 insertions, 0 deletions

diff --git a/sci-libs/cddlib/Manifest b/sci-libs/cddlib/Manifest
new file mode 100644
index 000000000000..b952037a9d1c
--- /dev/null
+++ b/sci-libs/cddlib/Manifest
@@ -0,0 +1,11 @@
+AUX cdd_both_reps.c 6439 SHA256 a0a799dfffd38447cf4e513e92780ca89429abf0c2ea6d983811fdf856613e65 SHA512 5aaf99344a823f908ffb54dc5fa153a865f11c7a4fdcde8773627de794a55f376f78f8cc19e40f6e62aceeec2d855aedcf43b0d332dc3c7231356a43b6a6715e WHIRLPOOL 0afc3949188620cdad182528dd4c99e2c1361b31ba0ba8e7070439f470bfc2f9285f53880590ee45354c06f01feeda09ce65e8ed8efa6dfa8c80b1f66a3372c3
+AUX cddlib-094g-add-cdd_both_reps-binary.patch 1210 SHA256 f0a317406ef224f392813e94d2d92615e91c9e2303b812b3c4bdc3e73f22075a SHA512 c69c6d2ebbfbf132a287032ac1470fcce0c0d1e000dd96501f271ff200034567056d3948626023722c83082289f40122b0eacf35d10d2497f36ab226a9316348 WHIRLPOOL 3d7723421b10af94284291ebbd45202522a14cf57316f981081a4fdca5b677f21bef38ae431b2604b20b834f41be11d5de75cd7f581141dc1468948d91706346
+AUX cddlib-094h-add-cdd_both_reps-binary.patch 1601 SHA256 ec750d791829f3124787e2d4a376ff8316e179600505fee5513ca0e3320535d2 SHA512 ccd75d42aa3bb1f753197fd3be7a6561f0bf419396cfbd42a6072b9d27955c5d80eff71622c6b54b26ed6cbe03544ae3bf61e0773c5630f1ce964845e71f7015 WHIRLPOOL a560f34568e3083fbacbddc4919658c9c23dec6defc7037d2cc624ea2d826852a6186f7397574cd8a87a3eac211a829577a761a7afa39dfd77fb0475bb932485
+AUX cddlib-094h-enforce-no-gmp.patch 1155 SHA256 aa45650e4902c8a9afb30c65b8bdb0f942e9a4f10418e09448abc8ab934a978e SHA512 113f4d9cf812c46663a87e1c22c56e41717ac93b1e022f99ad011917cf96cd25ada7670e3270a40f3b9dbdf8e88e6cefe9fcc03971f0cf17488c9a59a1612de6 WHIRLPOOL 7b76bfe4d3615375fd979f40e8feebd3cb4be6040fc0c76cf436f62b172eb5397a144bb68fca53d5c0294e0f864fd5f1449d544c2f85e64d2652216c66be1329
+DIST cddlib-094g.tar.gz 1383388 SHA256 af1b81226514abf731800e2e104def8a7274817d7e645693f8b99fc2b1432155 SHA512 e1053c6e34f79add53b2880c7664f9c20c0a6de636aa5de4c6a9dfc4d1d241221601c37d15e1833bcd5b1162512c3fbaed4046f771bc0a1e5753b713d6840b77 WHIRLPOOL e10d7be9989fee69827c66075be3dea4ef6751c42b7cdd21b3b07b3904387b1609314844dca0395ee7fb0b1d1cdb4fc978b4ebd0ce778f91d526276dd8ab7117
+DIST cddlib-094h.tar.gz 1678116 SHA256 fe6d04d494683cd451be5f6fe785e147f24e8ce3ef7387f048e739ceb4565ab5 SHA512 22160c88832b78dd568b58c1e097e4c6006f82580f1114a3ef03fc10bde98132337d5b555306b58b65aac6fea1534d9e09725907808c969de16c2dfc75f80204 WHIRLPOOL 23058056b1d9d8250ccffb1040d4ab2306f88e00f1b790cd6e38fc7fc634816d0f552fdee88038080172a8f8212d41eefaede1cd00246c82e8a7b88aceb4df15
+EBUILD cddlib-094g.ebuild 1014 SHA256 a57494083b1224ae50d6f15a0043871995624ab6c418ee8aac63717cb3566fa2 SHA512 f59749d1d10d844dfd97eafbbb1a752424f26af88652ff52d6f8a1fac2f1849051184a68c03f6bc82f548d0b550f12623c9ecce6c1e0aea2b1a9683779e57ef9 WHIRLPOOL dac8d36eb80f4e12f9a5c00b1a651a1211bc0dcd457c6532709a25eea17f4bb9b9fc04f3e65babb4de9b814de2ca2bf688ce127ea2f08238a982a656aa5d82db
+EBUILD cddlib-094h.ebuild 1133 SHA256 c7909d78667f48464cab483b068005abb9f4cafb1a8192f1dbb259f62a8f6791 SHA512 82955079415a3be974df9393350cf0e58dbf3c5c84dee1460e4db0c6f96049b71798b21e9b4d6f986a3f6e65cbb652da2fccc569a3e34309fd0d1316ff8acc94 WHIRLPOOL 2c464ce9237dd2cff80a579be7fe4d6cacdb9a692cf7d1b860aff15a3b8aac3b9a3f42d828e274ceecb8016c33ee7432ddb5c8ca20d5302cd949b00a230fc6da
+MISC ChangeLog 2938 SHA256 8b6efd2b180d598c2d37047f72725e95c67983de942b0806d90ee959bb04a506 SHA512 d05d0fcd1d1a02f11274011251c3a865cfc02090d745aa3ba50b5249887f50052138d627877e1b951cbea52306f2ab0c6341239e8ccfca47b72a7fe5cfc5a86b WHIRLPOOL 387d9204907c0193e5574c40d3e311172a6502767e4de92137f68d2a8eb4f3961696f88918d3c66f921611ab69d8f5e8e35cd53661cfc4a9902a5b568e0659fb
+MISC ChangeLog-2015 1622 SHA256 7101ff534e396ecf9712f753a816a50250233ceaea2dd6f08446e471a06208d5 SHA512 d27614a019a40f72d1fa55d9d989b3a1c6f2bd62e687281e36c62bdd93b4c1dcca7f12b4dbc354713b5576cf300a34c727e8876144ca36cb3d5d0ddd945edac2 WHIRLPOOL 9bad11da28535e89323be8a456ba1c925c2bdc1e49f13b21bf6fe7eac00f752e93bce7e753794930eefce3886120b385e4f516320909c0482aafbf469dd2cb1c
+MISC metadata.xml 1238 SHA256 9be90eff3a68c0fabe14e2eafdf53f0164533eb076662416665751fd8a438d05 SHA512 f9422c30988d6e2ef87f650906dc500fd3dc8203745c5a8e261dbce3dd2daa307c9e8245deb64dad70a594a92f78ec2add3d77aacc94d2490ac2e9c1bfe1e4b1 WHIRLPOOL 6abcdd244f366ce01e9fbf4b9c29051201052c2c09b7005f6da3aad1063af712f2e23125f8ecfed1597befa2bfce9869c954432d088cc780bdfc59db12049ce9
diff --git a/sci-libs/cddlib/cddlib-094g.ebuild b/sci-libs/cddlib/cddlib-094g.ebuild
new file mode 100644
index 000000000000..6a37b6d4ec1e
--- /dev/null
+++ b/sci-libs/cddlib/cddlib-094g.ebuild
@@ -0,0 +1,43 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=5
+
+AUTOTOOLS_AUTORECONF=true
+
+inherit autotools-utils
+
+DESCRIPTION="C implementation of the Double Description Method of Motzkin et al"
+HOMEPAGE="http://www.ifor.math.ethz.ch/~fukuda/cdd_home/"
+SRC_URI="ftp://ftp.ifor.math.ethz.ch/pub/fukuda/cdd/${P}.tar.gz"
+
+SLOT="0"
+LICENSE="GPL-2"
+KEYWORDS="amd64 ~arm ppc x86 ~amd64-linux ~x86-linux"
+IUSE="doc static-libs"
+
+DEPEND=">=dev-libs/gmp-4.2.2:0="
+RDEPEND="${DEPEND}"
+
+AUTOTOOLS_IN_SOURCE_BUILD="1"
+
+DOCS=( ChangeLog README )
+
+PATCHES=(
+	"${FILESDIR}"/${P}-add-cdd_both_reps-binary.patch
+)
+
+src_prepare() {
+	autotools-utils_src_prepare
+
+	cp "${FILESDIR}"/cdd_both_reps.c "${S}"/src/ \
+		|| die "failed to copy source file"
+	ln -s "${S}"/src/cdd_both_reps.c "${S}"/src-gmp/cdd_both_reps.c \
+		|| die "failed to make symbolic link to source file"
+}
+
+src_install() {
+	use doc && DOCS+=( doc/cddlibman.pdf doc/cddlibman.ps )
+
+	autotools-utils_src_install
+}
diff --git a/sci-libs/cddlib/cddlib-094h.ebuild b/sci-libs/cddlib/cddlib-094h.ebuild
new file mode 100644
index 000000000000..d9dd28bdddb4
--- /dev/null
+++ b/sci-libs/cddlib/cddlib-094h.ebuild
@@ -0,0 +1,45 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit autotools eutils
+
+DESCRIPTION="C implementation of the Double Description Method of Motzkin et al"
+HOMEPAGE="https://www.inf.ethz.ch/personal/fukudak/cdd_home/"
+SRC_URI="ftp://ftp.math.ethz.ch/users/fukudak/cdd/${P}.tar.gz"
+
+SLOT="0"
+LICENSE="GPL-2"
+KEYWORDS="~amd64 ~arm ~ppc ~x86 ~amd64-linux ~x86-linux"
+IUSE="doc static-libs tools"
+
+DEPEND="dev-libs/gmp:0="
+RDEPEND="${DEPEND}"
+
+DOCS=( ChangeLog README )
+
+PATCHES=(
+	"${FILESDIR}"/${P}-add-cdd_both_reps-binary.patch
+	"${FILESDIR}"/${P}-enforce-no-gmp.patch
+)
+
+src_prepare() {
+	default
+	sed -e 's|localdebug=dd_TRUE|localdebug=dd_FALSE|g' \
+		-i lib-src/cddlp.c -i lib-src-gmp/cddlp.c -i lib-src-gmp/cddlp_f.c || die
+	cp "${FILESDIR}"/cdd_both_reps.c src || die
+	ln -s "${S}"/src/cdd_both_reps.c "${S}"/src-gmp/cdd_both_reps.c || die
+	eautoreconf
+}
+
+src_configure() {
+	econf $(use_enable static-libs static)
+}
+
+src_install() {
+	default
+	use tools || rm "${ED}"/usr/bin/*
+	use static-libs || prune_libtool_files --all
+	use doc && dodoc doc/cddlibman.pdf
+}
diff --git a/sci-libs/cddlib/files/cdd_both_reps.c b/sci-libs/cddlib/files/cdd_both_reps.c
new file mode 100644
index 000000000000..3de4247e3016
--- /dev/null
+++ b/sci-libs/cddlib/files/cdd_both_reps.c
@@ -0,0 +1,255 @@
+/* cdd_both_reps.c: compute reduced H and V representation of polytope
+   by Volker Braun <vbraun@stp.dias.ie>
+   
+   The input is taken from stdin and can be either a 
+   H or V representation, not necessarily reduced.
+
+   based on testcdd1.c, redcheck.c, and of course the cdd library
+   written by Komei Fukuda, fukuda@ifor.math.ethz.ch
+   Standard ftp site: ftp.ifor.math.ethz.ch, Directory: pub/fukuda/cdd
+*/
+
+/*  This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "setoper.h"
+#include "cdd.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
+#include <string.h>
+
+
+
+
+
+void compute_adjacency(dd_MatrixPtr Rep, dd_ErrorType* err_ptr)
+{
+  dd_SetFamilyPtr AdjacencyGraph;
+  if (*err_ptr != dd_NoError) return;
+
+  switch (Rep->representation) {
+  case dd_Inequality: 
+    printf("Facet graph\n");
+    break;
+  case dd_Generator: 
+    printf("Vertex graph\n");
+    break;
+  case dd_Unspecified:
+    printf("unknown representation type!\n");
+  default:
+    printf("This should be unreachable!\n");
+    exit(2);
+  }
+
+  /* Output adjacency of vertices/rays/lines */
+  if (Rep->rowsize > 0) {  /* workaround for bug with empty polyhedron */
+    /* compute adjacent vertices/rays/lines */
+    AdjacencyGraph = dd_Matrix2Adjacency(Rep, err_ptr);
+    if (*err_ptr == dd_NoError) {
+      dd_WriteSetFamily(stdout,AdjacencyGraph);
+      dd_FreeSetFamily(AdjacencyGraph);
+    }
+  } else {
+    printf("begin\n");
+    printf("  0    0\n");
+    printf("end\n");
+  }
+
+  printf("\n");
+}
+
+
+void minimal_Vrep_Hrep(dd_MatrixPtr M, 
+		       dd_MatrixPtr* Vrep_ptr, dd_MatrixPtr* Hrep_ptr, 
+		       dd_ErrorType* err_ptr)
+{
+  dd_PolyhedraPtr poly;
+  dd_rowindex newpos;
+  dd_rowset impl_linset,redset;
+  dd_MatrixPtr Vrep, Hrep;
+
+  if (*err_ptr != dd_NoError) return;
+
+   /* compute the second representation */
+  poly = dd_DDMatrix2Poly(M, err_ptr);
+  if (*err_ptr != dd_NoError) return;
+
+  if (*err_ptr == dd_NoError) {
+    /* compute canonical H-representation */
+    Hrep = dd_CopyInequalities(poly);
+    if (Hrep->rowsize > 0) {  /* workaround for bug with empty matrix */
+      dd_MatrixCanonicalize(&Hrep, &impl_linset, &redset, &newpos, err_ptr);
+      if (*err_ptr == dd_NoError) {
+	set_free(redset);
+	set_free(impl_linset);
+	free(newpos);
+      }
+    }
+    if (*err_ptr == dd_NoError) (*Hrep_ptr) = Hrep;
+  }
+
+  if (*err_ptr == dd_NoError) {
+    /* compute canonical V-representation */
+    Vrep = dd_CopyGenerators(poly);
+    if (Vrep->rowsize > 0) {  /* workaround for bug with empty matrix */
+      dd_MatrixCanonicalize(&Vrep, &impl_linset, &redset, &newpos, err_ptr);
+      if (*err_ptr == dd_NoError) {
+	set_free(redset);
+	set_free(impl_linset);
+	free(newpos);
+      }
+    }
+    if (*err_ptr == dd_NoError) (*Vrep_ptr) = Vrep;
+  }
+
+  dd_FreePolyhedra(poly);
+}
+
+
+void print_both_reps(dd_MatrixPtr Vrep, dd_MatrixPtr Hrep)
+{
+  /* Output V-representation */
+  dd_WriteMatrix(stdout,Vrep);
+  printf("\n");
+
+  /* Output H-representation */
+  dd_WriteMatrix(stdout,Hrep);
+  printf("\n");
+}
+
+
+void compute_both_reps(dd_MatrixPtr M, dd_ErrorType* err_ptr)
+{
+  dd_MatrixPtr Vrep, Hrep;
+  minimal_Vrep_Hrep(M, &Vrep, &Hrep, err_ptr);
+  if (*err_ptr != dd_NoError) return;
+
+  print_both_reps(Vrep, Hrep);
+  dd_FreeMatrix(Hrep);
+  dd_FreeMatrix(Vrep);
+}
+
+
+void compute_all(dd_MatrixPtr M, dd_ErrorType* err_ptr)
+{
+  dd_MatrixPtr Vrep, Hrep;
+  minimal_Vrep_Hrep(M, &Vrep, &Hrep, err_ptr);
+  if (*err_ptr != dd_NoError) return;
+
+  print_both_reps(Vrep, Hrep);
+  compute_adjacency(Vrep, err_ptr);
+  compute_adjacency(Hrep, err_ptr);
+  dd_FreeMatrix(Hrep);
+  dd_FreeMatrix(Vrep);
+}
+
+
+
+void usage(char *name)
+{
+  printf("No known option specified, I don't know what to do!\n"
+	 "Usage:\n"
+	 "%s --option\n"
+	 "where --option is precisely one of the following:\n\n"
+	 "  --all: Compute everything.\n"
+	 "    This will compute minimal H-,V-representation and vertex and facet graph.\n"
+	 "\n"
+	 "  --reps: Compute both a minimal H- and minimal V-representation.\n"
+	 "\n"
+	 "  --adjacency: Compute adjacency information only.\n"
+	 "    The input is assumed to be a minimal representation, as, for example, computed\n"
+	 "    by --reps. Warning, you will not get the correct answer if the input\n"
+	 "    representation is not minimal! The output is the vertex or facet graph,\n"
+	 "    depending on the input.\n"
+	 "\n"
+	 "The input data is a H- or V-representation in cdd's ine/ext format and\n"
+	 "is in each case read from stdin.\n", 
+	 name);
+}
+
+
+enum command_line_arguments { ALL, REPS, ADJACENCY };
+
+
+int parse_arguments(char* arg, enum command_line_arguments* option)
+{
+  if (strcmp(arg,"--all")==0) {
+    *option = ALL;
+    return 0;
+  }
+  if (strcmp(arg,"--reps")==0) {
+    *option = REPS;
+    return 0;
+  }
+  if (strcmp(arg,"--adjacency")==0) {
+    *option = ADJACENCY;
+    return 0;
+  }
+  printf("Unknown option: %s\n", arg);
+  return 1;
+}
+
+
+int main(int argc, char *argv[])
+{
+  dd_ErrorType err=dd_NoError;
+  dd_MatrixPtr M;
+  enum command_line_arguments option;
+
+  if (argc!=2 || parse_arguments(argv[1],&option)) {
+    usage(argv[0]);
+    return 0;
+  } 
+
+  dd_set_global_constants(); 
+
+  /* Read data from stdin */
+  M = dd_PolyFile2Matrix(stdin, &err);
+  if (err != dd_NoError) {
+    printf("I was unable to parse the input data!\n");
+    dd_WriteErrorMessages(stdout,err);
+    dd_free_global_constants();
+    return 1;
+  }
+
+  switch (option) {
+  case ALL:
+    compute_all(M,&err);
+    break;
+  case REPS:
+    compute_both_reps(M,&err);
+    break;
+  case ADJACENCY:
+    compute_adjacency(M,&err);
+    break;
+  default:
+    printf("unreachable option %d\n", option);
+    exit(3); /* unreachable */
+  }
+  
+  /* cleanup */
+  dd_FreeMatrix(M);
+  if (err != dd_NoError) {
+    dd_WriteErrorMessages(stdout,err);
+  }
+
+  dd_free_global_constants();
+  return 0;
+}
+
+
+
diff --git a/sci-libs/cddlib/files/cddlib-094g-add-cdd_both_reps-binary.patch b/sci-libs/cddlib/files/cddlib-094g-add-cdd_both_reps-binary.patch
new file mode 100644
index 000000000000..3aa5912b7460
--- /dev/null
+++ b/sci-libs/cddlib/files/cddlib-094g-add-cdd_both_reps-binary.patch
@@ -0,0 +1,41 @@
+--- src-gmp/Makefile.am	2009-01-26 09:30:16.000000000 +0000
++++ src-gmp/Makefile.am	2009-10-04 10:36:17.000000000 +0100
+@@ -11,7 +11,8 @@
+ testcdd2_gmp \
+ testlp1_gmp \
+ testlp2_gmp \
+-testlp3_gmp
++testlp3_gmp \
++cdd_both_reps_gmp 
+ #cddmathlink
+ 
+ scdd_gmp_SOURCES                   = simplecdd.c
+@@ -27,6 +28,7 @@
+ testlp1_gmp_SOURCES                = testlp1.c
+ testlp2_gmp_SOURCES                = testlp2.c
+ testlp3_gmp_SOURCES                = testlp3.c
++cdd_both_reps_gmp_SOURCES          = cdd_both_reps.c
+ # cddmathlink_SOURCES                = cddmathlink.c cddmlio.h cddmlio.c
+ 
+ LDADD        = ../lib-src-gmp/libcddgmp.la
+--- src/Makefile.am	2009-01-26 09:30:03.000000000 +0000
++++ src/Makefile.am	2009-10-04 10:36:17.000000000 +0100
+@@ -11,7 +11,8 @@
+ testcdd2 \
+ testlp1 \
+ testlp2 \
+-testlp3
++testlp3 \
++cdd_both_reps 
+ #cddmathlink
+ 
+ scdd_SOURCES                   = simplecdd.c
+@@ -27,6 +28,7 @@
+ testlp1_SOURCES                = testlp1.c
+ testlp2_SOURCES                = testlp2.c
+ testlp3_SOURCES                = testlp3.c
++cdd_both_reps_SOURCES          = cdd_both_reps.c
+ # cddmathlink_SOURCES                = cddmathlink.c cddmlio.h cddmlio.c
+ 
+ LDADD        = ../lib-src/libcdd.la
+
diff --git a/sci-libs/cddlib/files/cddlib-094h-add-cdd_both_reps-binary.patch b/sci-libs/cddlib/files/cddlib-094h-add-cdd_both_reps-binary.patch
new file mode 100644
index 000000000000..ba9a909abb19
--- /dev/null
+++ b/sci-libs/cddlib/files/cddlib-094h-add-cdd_both_reps-binary.patch
@@ -0,0 +1,43 @@
+diff -up cddlib-094g/src-gmp/Makefile.am.orig cddlib-094g/src-gmp/Makefile.am
+--- cddlib-094g/src-gmp/Makefile.am.orig	2012-07-05 13:30:30.982562213 -0400
++++ cddlib-094g/src-gmp/Makefile.am	2012-07-05 13:31:14.576563881 -0400
+@@ -11,7 +11,8 @@ testcdd1_gmp \
+ testcdd2_gmp \
+ testlp1_gmp \
+ testlp2_gmp \
+-testlp3_gmp
++testlp3_gmp \
++cdd_both_reps_gmp 
+ #cddmathlink
+ 
+ scdd_gmp_SOURCES                   = simplecdd.c
+@@ -27,6 +28,7 @@ testcdd2_gmp_SOURCES               = tes
+ testlp1_gmp_SOURCES                = testlp1.c
+ testlp2_gmp_SOURCES                = testlp2.c
+ testlp3_gmp_SOURCES                = testlp3.c
++cdd_both_reps_gmp_SOURCES          = cdd_both_reps.c
+ # cddmathlink_SOURCES                = cddmathlink.c cddmlio.h cddmlio.c
+ 
+ LDADD        = ../lib-src-gmp/libcddgmp.la
+diff -up cddlib-094g/src-gmp/Makefile.in.orig cddlib-094g/src-gmp/Makefile.in
+diff -up cddlib-094g/src/Makefile.am.orig cddlib-094g/src/Makefile.am
+--- cddlib-094g/src/Makefile.am.orig	2012-07-05 13:34:07.449570501 -0400
++++ cddlib-094g/src/Makefile.am	2012-07-05 13:34:32.128571446 -0400
+@@ -11,7 +11,8 @@ testshoot \
+ testcdd2 \
+ testlp1 \
+ testlp2 \
+-testlp3
++testlp3 \
++cdd_both_reps
+ #cddmathlink
+ 
+ scdd_SOURCES                   = simplecdd.c
+@@ -27,6 +28,7 @@ testcdd2_SOURCES               = testcdd
+ testlp1_SOURCES                = testlp1.c
+ testlp2_SOURCES                = testlp2.c
+ testlp3_SOURCES                = testlp3.c
++cdd_both_reps_SOURCES          = cdd_both_reps.c
+ # cddmathlink_SOURCES                = cddmathlink.c cddmlio.h cddmlio.c
+ 
+ LDADD        = ../lib-src/libcdd.la
diff --git a/sci-libs/cddlib/files/cddlib-094h-enforce-no-gmp.patch b/sci-libs/cddlib/files/cddlib-094h-enforce-no-gmp.patch
new file mode 100644
index 000000000000..bab20025a793
--- /dev/null
+++ b/sci-libs/cddlib/files/cddlib-094h-enforce-no-gmp.patch
@@ -0,0 +1,37 @@
+Description: Don't link against gmp in the non-gmp version
+ Using AC_CHECK_LIB will add -lgmp to all children, but we don't want this
+ for the non-gmp variants. Instead, add -lgmp explicitly in gmp variants.
+Author: Ximin Luo <infinity0@debian.org>
+Forwarded: TBD
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- a/configure.in
++++ b/configure.in
+@@ -14,8 +14,6 @@
+ dnl AC_CHECK_LIB(g, main)
+ dnl Replace `main' with a function in -lstdc:
+ dnl AC_CHECK_LIB(stdc, main)
+-dnl look for gmp:
+-AC_CHECK_LIB(gmp, main)
+ 
+ dnl Checks for header files.
+ AC_HEADER_STDC
+--- a/lib-src-gmp/Makefile.am
++++ b/lib-src-gmp/Makefile.am
+@@ -25,4 +25,4 @@
+ setoper.h
+ 
+ AM_CPPFLAGS = -I$(gmpincludedir) -DGMPRATIONAL
+-AM_LDFLAGS = -version-info 0:0:0
++AM_LDFLAGS = -lgmp -version-info 0:0:0
+--- a/src-gmp/Makefile.am
++++ b/src-gmp/Makefile.am
+@@ -32,7 +32,7 @@
+ # cddmathlink_SOURCES                = cddmathlink.c cddmlio.h cddmlio.c
+ 
+ LDADD        = ../lib-src-gmp/libcddgmp.la
+-AM_LDFLAGS   = -L$(gmplibdir)
++AM_LDFLAGS   = -lgmp -L$(gmplibdir)
+ INCLUDES     = -I../lib-src-gmp
+ INCLUDES    += -I$(gmpincludedir)
+ AM_CPPFLAGS  = -DGMPRATIONAL
diff --git a/sci-libs/cddlib/metadata.xml b/sci-libs/cddlib/metadata.xml
new file mode 100644
index 000000000000..a93a12f9174f
--- /dev/null
+++ b/sci-libs/cddlib/metadata.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="project">
+    <email>sci-mathematics@gentoo.org</email>
+    <name>Gentoo Mathematics Project</name>
+  </maintainer>
+  <longdescription lang="en">
+    The C-library  cddlib is a C implementation of the Double Description 
+    Method of Motzkin et al. for generating all vertices (i.e. extreme points)
+    and extreme rays of a general convex polyhedron in R^d given by a system 
+    of linear inequalities:
+    
+    P = { x=(x1, ..., xd)^T :  b - A  x  &gt;= 0 }
+
+    where  A  is a given m x d real matrix, b is a given m-vector 
+    and 0 is the m-vector of all zeros.
+    
+    The program can be used for the reverse operation (i.e. convex hull
+    computation).  This means that  one can move back and forth between 
+    an inequality representation  and a generator (i.e. vertex and ray) 
+    representation of a polyhedron with cdd.  Also, cdd can solve a linear
+    programming problem, i.e. a problem of maximizing and minimizing 
+    a linear function over P.
+  </longdescription>
+  <use>
+    <flag name="tools">Add a few executables and tests for cddlib</flag>
+  </use>
+</pkgmetadata>