mpfr: Add a recipe to build mpfr. [skip appveyor]

recipes/mpfr/build.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+./configure --prefix=$PREFIX \
+            --with-gmp=$PREFIX \
+            --enable-static
+make
+make check
+make install

recipes/mpfr/meta.yaml

@@ -0,0 +1,39 @@
+{% set version = "3.1.4" %}
+
+package:
+  name: mpfr
+  version: {{ version }}
+
+source:
+  fn: mpfr-{{ version }}.tar.bz2
+  url: http://ftp.gnu.org/gnu/mpfr/mpfr-{{ version }}.tar.gz
+  md5: 482ab3c120ffc959f631b4ba9ec59a46
+
+build:
+  number: 0
+  skip: true  # [win]
+
+requirements:
+  build:
+    - autoconf
+    - m4
+    - libtool
+    - gmp
+  run:
+    - gmp
+
+test:
+  commands:
+    - test -f ${PREFIX}/lib/libmpfr.a      # [unix]
+    - test -f ${PREFIX}/lib/libmpfr.dylib  # [osx]
+    - test -f ${PREFIX}/lib/libmpfr.so     # [linux]
+
+about:
+  home: http://www.mpfr.org/
+  license: LGPL 3
+  summary: The MPFR library is a C library for multiple-precision floating-point computations with correct rounding.
+
+extra:
+  recipe-maintainers:
+    - isuruf
+    - jakirkham

recipes/mpfr/run_test.sh

@@ -0,0 +1,2 @@
+cc -L$PREFIX/lib -I$PREFIX/include -lmpfr -lgmp -Wl,-rpath,$PREFIX/lib $RECIPE_DIR/test.c -o test.o
+./test.o

recipes/mpfr/test.c

@@ -0,0 +1,32 @@
+/* From http://www.mpfr.org/sample.html */
+
+#include <stdio.h>
+
+#include <gmp.h>
+#include <mpfr.h>
+
+int main (void)
+{
+    unsigned int i;
+    mpfr_t s, t, u;
+
+    mpfr_init2 (t, 200);
+    mpfr_set_d (t, 1.0, MPFR_RNDD);
+    mpfr_init2 (s, 200);
+    mpfr_set_d (s, 1.0, MPFR_RNDD);
+    mpfr_init2 (u, 200);
+    for (i = 1; i <= 100; i++)
+        {
+            mpfr_mul_ui (t, t, i, MPFR_RNDU);
+            mpfr_set_d (u, 1.0, MPFR_RNDD);
+            mpfr_div (u, u, t, MPFR_RNDD);
+            mpfr_add (s, s, u, MPFR_RNDD);
+        }
+    printf ("Sum is ");
+    mpfr_out_str (stdout, 10, 0, s, MPFR_RNDD);
+    putchar ('\n');
+    mpfr_clear (s);
+    mpfr_clear (t);
+    mpfr_clear (u);
+    return 0;
+}