[bug#34615] [PATCH] gnu: Add libtommath.

[Efraim Flashner <efraim@flashner.co.il>]

* gnu/packages/algebra.scm (libtommath): New variable.
---
 gnu/packages/algebra.scm | 47 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 46 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/algebra.scm b/gnu/packages/algebra.scm
index f9ae22b3f3..98dc414ac5 100644
--- a/gnu/packages/algebra.scm
+++ b/gnu/packages/algebra.scm
@@ -4,7 +4,7 @@
 ;;; Copyright © 2016, 2017, 2018, 2019 Nicolas Goaziou <mail@nicolasgoaziou.fr>
 ;;; Copyright © 2014, 2018 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2016, 2018, 2019 Ricardo Wurmus <rekado@elephly.net>
-;;; Copyright © 2017 Efraim Flashner <efraim@flashner.co.il>
+;;; Copyright © 2017, 2019 Efraim Flashner <efraim@flashner.co.il>
 ;;; Copyright © 2017, 2018 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2017 Marius Bakke <mbakke@fastmail.com>
 ;;; Copyright © 2017, 2019 Eric Bavier <bavier@member.fsf.org>
@@ -1000,3 +1000,48 @@ objects.")
     ;; means that the gpl2+ licence of GAP itself applies, but to be on the
     ;; safe side, we drop them for now.
     (license license:gpl2+)))
+
+(define-public libtommath
+  (package
+    (name "libtommath")
+    (version "1.1.0")
+    (source
+      (origin
+        (method url-fetch)
+        (uri (string-append "https://github.com/libtom/libtommath/releases/"
+                            "download/v" version "/ltm-" version ".tar.xz"))
+        (sha256
+         (base32
+          "1bbyagqzfdbg37k1n08nsqzdf44z8zsnjjinqbsyj7rxg246qilh"))
+        (patches (search-patches "libtommath-fix-linkage.patch"))))
+    (build-system gnu-build-system)
+    (arguments
+     '(#:phases
+       (modify-phases %standard-phases
+         (delete 'configure) ; no configure
+         (add-after 'unpack 'prepare-build
+           (lambda _
+             ;; Don't pull in coreutils.
+             (substitute* "makefile_include.mk"
+               (("arch") "uname -m"))
+             (delete-file "makefile")
+             (symlink "makefile.shared" "makefile")
+             #t))
+         (replace 'check
+           (lambda* (#:key make-flags #:allow-other-keys)
+             (apply invoke "make" "test_standalone" make-flags)
+             (invoke "sh" "test")))
+         (add-after 'check 'make-static
+           (lambda* (#:key make-flags #:allow-other-keys)
+             (apply invoke "make" "-f" "makefile.unix" "install" make-flags))))
+       #:make-flags (list (string-append "PREFIX=" (assoc-ref %outputs "out"))
+                          "CC=gcc")))
+    (native-inputs
+     `(("libtool" ,libtool)))
+    (home-page "https://www.libtom.net/LibTomMath/")
+    (synopsis "portable number theoretic multiple-precision integer library")
+    (description "LibTomMath is a portable number theoretic multiple-precision
+integer library written entirely in C.  The library is designed to provide a
+simple to work with API that provides fairly efficient routines that build out
+of the box without configuration.")
+    (license license:unlicense)))
-- 
2.20.1