[PATCH 3/4] gnu: Add pt-scotch package.

[Eric Bavier <ericbavier@gmail.com>]

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From 936d49e8b0651a0e3b4674fcd34308c1d396de72 Mon Sep 17 00:00:00 2001
From: Eric Bavier <bavier@member.fsf.org>
Date: Sat, 17 May 2014 00:31:59 -0500
Subject: [PATCH 3/4] gnu: Add pt-scotch package.

* gnu/packages/maths.scm (pt-scotch): New variable.
---
 gnu/packages/maths.scm |   66 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 0366385..d9f846e 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -663,3 +663,69 @@ partitioning, static mapping, and sparse matrix ordering, in application
 domains ranging from structural mechanics to operating systems or
 bio-chemistry.")
     (license (license:fsf-free "file://LICENSE_en.txt"))))
+
+(define-public pt-scotch
+  (package (inherit scotch)
+    (name "pt-scotch")
+    (inputs
+     `(("openmpi" ,openmpi)
+       ,@(package-inputs scotch)))
+    (arguments
+     `(#:phases
+       (alist-cons-after
+        'unpack 'chdir-to-src
+        (lambda _ (chdir "src"))
+        (alist-replace
+         'configure
+         (lambda _
+           (call-with-output-file "Makefile.inc"
+             (lambda (port)
+               (format port "
+EXE =
+LIB = .a
+OBJ = .o
+MAKE = make
+AR = ar
+ARFLAGS = -ruv
+CCS = gcc
+CCP = mpicc
+CCD = gcc
+CPPFLAGS =~{ -D~a~}
+CFLAGS = -O2 -g $(CPPFLAGS)
+LDFLAGS = -lz -lm -lrt -lpthread
+CP = cp
+LEX = flex -Pscotchyy -olex.yy.c
+LN = ln
+MKDIR = mkdir
+MV = mv
+RANLIB = ranlib
+YACC = bison -pscotchyy -y -b y
+"
+                       '("COMMON_FILE_COMPRESS_GZ"
+                         "COMMON_PTHREAD"
+                         "COMMON_RANDOM_FIXED_SEED"
+                         ;; TODO: Define once our MPI supports MPI_THREAD_MULTIPLE
+                         ;; "SCOTCH_PTHREAD"
+                         ;; "SCOTCH_PTHREAD_NUMBER=2"
+                         "restrict=__restrict")))))
+         (alist-replace
+          'build
+          ;; TODO: Would like to add parallelism here
+          (lambda _
+            (and
+             (zero? (system* "make" "ptscotch"))
+             ;; Install the serial metis compatibility library
+             (zero? (system* "make" "-C" "libscotchmetis" "install"))))
+          (alist-replace
+           'check
+           (lambda _ (zero? (system* "make" "ptcheck")))
+           (alist-replace
+            'install
+            (lambda* (#:key outputs #:allow-other-keys)
+              (let ((out (assoc-ref outputs "out")))
+                (mkdir out)
+                (zero? (system* "make"
+                                (string-append "prefix=" out)
+                                "install"))))
+            %standard-phases)))))))
+    (synopsis "Programs and libraries for graph algorithms (with MPI)")))
-- 
1.7.9.5


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-- 
Eric Bavier

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