[bug#41995] [PATCH 1/2] gnu: Add symengine.

[Vinicius Monego <monego@posteo.net>]

* gnu/packages/algebra.scm (symengine): New variable.
---
Removed TCMalloc and gperftools, build libsymengine, add comments
 gnu/packages/algebra.scm | 42 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/gnu/packages/algebra.scm b/gnu/packages/algebra.scm
index b78e6ef304..34e6d40dbb 100644
--- a/gnu/packages/algebra.scm
+++ b/gnu/packages/algebra.scm
@@ -12,6 +12,7 @@
 ;;; Copyright © 2020 Björn Höfling <bjoern.hoefling@bjoernhoefling.de>
 ;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
 ;;; Copyright © 2020 Vincent Legoll <vincent.legoll@gmail.com>
+;;; Copyright © 2020 Vinicius Monego <monego@posteo.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -43,6 +44,7 @@
   #:use-module (gnu packages graphviz)
   #:use-module (gnu packages image)
   #:use-module (gnu packages java)
+  #:use-module (gnu packages llvm)
   #:use-module (gnu packages maths)
   #:use-module (gnu packages mpi)
   #:use-module (gnu packages multiprecision)
@@ -946,6 +948,46 @@ minimization and curve fitting.  It is mature code, based on decades-old
 algorithms from the FORTRAN library MINPACK.")
     (license license:bsd-2)))
 
+(define-public symengine
+  (package
+    (name "symengine")
+    (version "0.6.0")
+    (source
+     (origin
+      (method git-fetch)
+      (uri (git-reference
+            (url "https://github.com/symengine/symengine.git")
+            (commit (string-append "v" version))))
+      (file-name (git-file-name name version))
+      (sha256
+       (base32 "129iv9maabmb42ylfdv0l0g94mcbf3y4q3np175008rcqdr8z6h1"))))
+    (build-system cmake-build-system)
+    (arguments
+     '(;; These are the suggested build options in the README.
+       #:configure-flags
+       '("-DCMAKE_BUILD_TYPE=Release"
+         "-DWITH_GMP=on"
+         "-DWITH_MPFR=on"
+         "-DWITH_MPC=on"
+         "-DINTEGER_CLASS=flint"
+         "-DWITH_LLVM=on"
+         "-DWITH_SYMENGINE_THREAD_SAFE=on"
+         "-DBUILD_SHARED_LIBS=on"))) ; also build libsymengine
+    (native-inputs
+     `(("llvm" ,llvm)))
+    (inputs
+     `(("flint" ,flint)
+       ("gmp" ,gmp)
+       ("mpc" ,mpc)
+       ("mpfr" ,mpfr)))
+    (home-page "https://github.com/symengine/symengine")
+    (synopsis "Fast symbolic manipulation library")
+    (description "SymEngine is a standalone fast C++ symbolic manipulation
+library.  Optional thin wrappers allow usage of the library from other
+languages.")
+    (license (list license:expat     ; SymEngine
+                   license:bsd-3)))) ; 3rd party code
+
 (define-public eigen
   (package
     (name "eigen")
-- 
2.20.1