From 5e548e94e805794d76402d90bc0dc7e887dde8c9 Mon Sep 17 00:00:00 2001
From: Timo Kaufmann <timokau@zoho.com>
Date: Mon, 23 Apr 2018 21:13:25 +0200
Subject: glpk: Add gmp support

---
 pkgs/development/libraries/glpk/default.nix | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

(limited to 'pkgs/development/libraries')

diff --git a/pkgs/development/libraries/glpk/default.nix b/pkgs/development/libraries/glpk/default.nix
index b9634e01900..5b9296608d4 100644
--- a/pkgs/development/libraries/glpk/default.nix
+++ b/pkgs/development/libraries/glpk/default.nix
@@ -1,13 +1,33 @@
-{ fetchurl, stdenv }:
+{ stdenv
+, fetchurl
+# Excerpt from glpk's INSTALL file:
+# This feature allows the exact simplex solver to use the GNU MP
+# bignum library. If it is disabled, the exact simplex solver uses the
+# GLPK bignum module, which provides the same functionality as GNU MP,
+# however, it is much less efficient.
+, withGmp ? true
+, gmp
+}:
+
+assert withGmp -> gmp != null;
 
 stdenv.mkDerivation rec {
-  name = "glpk-4.65";
+  version = "4.65";
+  name = "glpk-${version}";
 
   src = fetchurl {
     url = "mirror://gnu/glpk/${name}.tar.gz";
     sha256 = "040sfaa9jclg2nqdh83w71sv9rc1sznpnfiripjdyr48cady50a2";
   };
 
+  buildInputs = stdenv.lib.optionals withGmp [
+    gmp
+  ];
+
+  configureFlags = stdenv.lib.optionals withGmp [
+    "--with-gmp"
+  ];
+
   doCheck = true;
 
   meta = {
@@ -23,7 +43,7 @@ stdenv.mkDerivation rec {
     homepage = http://www.gnu.org/software/glpk/;
     license = stdenv.lib.licenses.gpl3Plus;
 
-    maintainers = [ stdenv.lib.maintainers.bjg ];
+    maintainers = with stdenv.lib.maintainers; [ bjg ];
     platforms = stdenv.lib.platforms.all;
   };
 }
-- 
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