Update SymEngine package (#2919)

Take advantage of new configuration options in the @develop branch

var/spack/repos/builtin/packages/symengine/package.py

@@ -23,9 +23,10 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
+import sys
 
 
-class Symengine(Package):
+class Symengine(CMakePackage):
     """SymEngine is a fast symbolic manipulation library, written in C++."""
 
     homepage = "https://github.com/symengine/symengine"
@@ -35,7 +36,9 @@ class Symengine(Package):
     version('0.1.0', '41ad7daed61fc5a77c285eb6c7303425')
     version('develop', git='https://github.com/symengine/symengine.git')
 
-    variant('flint',        default=True,
+    variant('boostmp',      default=False,
+            description='Compile with Boost multi-precision integer library')
+    variant('flint',        default=False,
             description='Compile with Flint integer library')
     variant('mpc',          default=True,
             description='Compile with MPC library')
@@ -54,20 +57,22 @@ class Symengine(Package):
     depends_on('cmake',    type='build')
 
     # Other dependencies
-    depends_on('gmp')  # mpir is a drop-in replacement for this
-    depends_on('mpc',      when='+mpc')  # Could also be built against mpir
-    depends_on('mpfr',     when='+mpfr')  # Could also be built against mpir
-    depends_on('flint',    when='+flint')  # Could also be built against mpir
-    depends_on('piranha',  when='+piranha~flint')  # Could also be built against mpir  # NOQA
+    # NOTE: mpir is a drop-in replacement for gmp
+    # NOTE: [mpc,mpfr,flint,piranha] could also be built against mpir
+    depends_on('boost',    when='+boostmp')
+    depends_on('gmp',      when='~boostmp')
+    depends_on('mpc',      when='+mpc~boostmp')
+    depends_on('mpfr',     when='+mpfr~boostmp')
+    depends_on('flint',    when='+flint~boostmp')
+    depends_on('piranha',  when='+piranha~flint~boostmp')
 
-    def install(self, spec, prefix):
+    def build_type(self):
+        # CMAKE_BUILD_TYPE should be  Debug | Release
+        return 'Release'
+
+    def cmake_args(self):
+        spec = self.spec
         options = []
-        options.extend(std_cmake_args)
-
-        # CMAKE_BUILD_TYPE should be Debug | Release
-        for word in options[:]:
-            if word.startswith('-DCMAKE_BUILD_TYPE'):
-                options.remove(word)
 
         # See https://github.com/symengine/symengine/blob/master/README.md
         # for build options
@@ -76,38 +81,47 @@ def install(self, spec, prefix):
             '-DWITH_SYMENGINE_RCP:BOOL=ON',
             '-DWITH_SYMENGINE_THREAD_SAFE:BOOL=%s' % (
                 'ON' if ('+thread_safe' or '+openmp') in spec else 'OFF'),
-            '-DBUILD_TESTS:BOOL=ON',
+            '-DBUILD_TESTS:BOOL=%s' % (
+                'ON' if self.run_tests else 'OFF'),
             '-DBUILD_BENCHMARKS:BOOL=ON',
-            '-DWITH_MPC:BOOL=%s' % (
-                'ON' if '+mpc' in spec else 'OFF'),
-            '-DWITH_MPFR:BOOL=%s' % (
-                'ON' if '+mpfr' in spec else 'OFF'),
-            '-DINTEGER_CLASS:STRING=gmp',
             '-DWITH_OPENMP:BOOL=%s' % (
                 'ON' if '+openmp' in spec else 'OFF'),
             '-DBUILD_SHARED_LIBS:BOOL=%s' % (
                 'ON' if '+shared' in spec else 'OFF'),
         ])
 
-        if '+flint' in spec:
+        if sys.platform == 'darwin':
             options.extend([
-                '-DWITH_FLINT:BOOL=ON',
-                '-DINTEGER_CLASS:STRING=flint'
+                '-DCMAKE_INSTALL_RPATH_USE_LINK_PATH:BOOL=on'
             ])
-        elif '+piranha' in spec:
+
+        if '+boostmp' in spec:
             options.extend([
-                '-DWITH_PIRANHA:BOOL=ON',
-                '-DINTEGER_CLASS:STRING=piranha'
+                '-DINTEGER_CLASS:STRING=boostmp',
+                '-DBoost_INCLUDE_DIR=%s' % spec['boost'].prefix.include,
+                '-DWITH_MPC:BOOL=OFF',
+                '-DWITH_MPFR:BOOL=OFF',
             ])
         else:
             options.extend([
-                '-DINTEGER_CLASS:STRING=gmp'
+                '-DWITH_MPC:BOOL=%s' % (
+                    'ON' if '+mpc' in spec else 'OFF'),
+                '-DWITH_MPFR:BOOL=%s' % (
+                    'ON' if '+mpfr' in spec else 'OFF'),
             ])
+            if '+flint' in spec:
+                options.extend([
+                    '-DWITH_FLINT:BOOL=ON',
+                    '-DINTEGER_CLASS:STRING=flint'
+                ])
+            elif '+piranha' in spec:
+                options.extend([
+                    '-DWITH_PIRANHA:BOOL=ON',
+                    '-DINTEGER_CLASS:STRING=piranha'
+                ])
+            else:
+                options.extend([
+                    '-DINTEGER_CLASS:STRING=gmp'
+                ])
 
-        with working_dir('spack-build', create=True):
-            cmake('..', *options)
-
-            make()
-            make('install')
-            if self.run_tests:
-                ctest()
+        return options