mxnet: added 1.3.0 (#9236)

* add version 1.3.0
* change build parameters, install process
  * mxnet will not compile against spack's nnvm and dmlc so we must use
    the distributions provided by the source package.
* also removed 'bin' installation as mxnet is just a shared library.
* improve BLAS linking
* remove unnecessary args
* added variant for python bindings

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

@@ -32,6 +32,8 @@ class Mxnet(MakefilePackage):
     homepage = "http://mxnet.io"
     url      = "https://github.com/apache/incubator-mxnet/archive/0.10.0.post2.tar.gz"
 
+    version('1.3.0', 'c00d6fbb2947144ce36c835308e603f002c1eb90a9f4c5a62f4d398154eed4d2',
+            url='https://github.com/apache/incubator-mxnet/releases/download/1.3.0/apache-mxnet-src-1.3.0-incubating.tar.gz')
     version('0.10.0.post2',  '7819d511cf4a6efad681e6662fa966e4',
             url="https://github.com/apache/incubator-mxnet/archive/0.10.0.post2.tar.gz")
     version('0.10.0.post1',  '16d540f407cd22285555b3ab22040032',
@@ -43,6 +45,7 @@ class Mxnet(MakefilePackage):
     variant('opencv', default=True, description='Enable OpenCV support')
     variant('openmp', default=False, description='Enable OpenMP support')
     variant('profiler', default=False, description='Enable Profiler (for verification and debug only).')
+    variant('python', default=True, description='Install python bindings')
 
     depends_on('dmlc-core@20170508')
     depends_on('dmlc-core+openmp', when='+openmp')
@@ -50,29 +53,45 @@ class Mxnet(MakefilePackage):
     depends_on('mshadow@20170721')
     depends_on('ps-lite@20170328')
     depends_on('nnvm~shared@20170418')
-    depends_on('openblas')
+    depends_on('blas')
     depends_on('cudnn', when='+cuda')
     depends_on('cudnn', when='+cuda')
     depends_on('cub', when='+cuda')
     depends_on('opencv+core+imgproc+highgui+jpeg+png+tiff~eigen~ipp@3.0:', when='+opencv')
 
+    # python extensions
+    depends_on('python@2.7:', type=('build', 'run'), when='+python')
+    depends_on('py-setuptools', type='build', when='+python')
+    extends('python', when='+python')
+
     patch('makefile.patch', when='@0.10:0.11')
 
     def build(self, spec, prefix):
-        filter_file('export CC = gcc', '', 'make/config.mk', string=True)
+        # copy template configuration file
-        filter_file('export CXX = g++', '', 'make/config.mk', string=True)
+        copy('make/config.mk', 'config.mk')
+
+        # remove compiler overrides
+        filter_file('export CC = gcc', '', 'config.mk', string=True)
+        filter_file('export CXX = g++', '', 'config.mk', string=True)
+
+        # add blas prefix to include paths
+        filter_file(
+            '-I$(NNVM_PATH)/include',
+            '-I$(NNVM_PATH)/include -I%s/include' % spec['blas'].prefix,
+            'Makefile', string=True
+        )
+
+        # mxnet comes with its own version of nnvm and dmlc.
+        # building it will fail if we use the spack paths
 
         args = [
             'CC=%s' % self.compiler.cc,
             'CXX=%s' % self.compiler.cxx,
-            'DMLC_CORE=%s' % spec['dmlc-core'].prefix,
             'MSHADOW_PATH=%s' % spec['mshadow'].prefix,
             'PS_PATH=%s' % spec['ps-lite'].prefix,
-            'NNVM_PATH=%s' % spec['nnvm'].prefix,
             'USE_OPENMP=%s' % ('1' if '+openmp' in spec else '0'),
             'USE_CUDA=%s' % ('1' if '+cuda' in spec else '0'),
             'USE_CUDNN=%s' % ('1' if '+cuda' in spec else '0'),
-            'CUB_INCLUDE=%s' % spec['cub'].prefix.include,
             'USE_OPENCV=%s' % ('1' if '+opencv' in spec else '0'),
             'USE_PROFILER=%s' % ('1' if '+profiler' in spec else '0'),
         ]
@@ -86,16 +105,27 @@ def build(self, spec, prefix):
                         '-lopencv_core -lopencv_imgproc -lopencv_imgcodecs',
                         'Makefile', string=True)
 
-        # TODO: Add more BLAS support
+        if 'openblas' in spec:
-        args.append('USE_BLAS=openblas')
+            args.extend(['USE_BLAS=openblas'])
+        elif 'atlas' in spec or 'cblas' in spec:
+            args.extend(['USE_BLAS=atlas'])
+        else:
+            args.extend(['USE_BLAS=blas'])
 
         if '+cuda' in spec:
             args.extend(['USE_CUDA_PATH=%s' % spec['cuda'].prefix,
-                         'CUDNN_PATH=%s' % spec['cudnn'].prefix])
+                         'CUDNN_PATH=%s' % spec['cudnn'].prefix,
+                         'CUB_INCLUDE=%s' % spec['cub'].prefix.include])
 
         make(*args)
 
     def install(self, spec, prefix):
+        # mxnet is just a shared library -- no need to install a bin tree
+
         install_tree('include', prefix.include)
         install_tree('lib', prefix.lib)
-        install_tree('bin', prefix.bin)
+
+        # install python bindings
+        if '+python' in spec:
+            python = which('python')
+            python('python/setup.py', 'install', '--prefix={0}'.format(prefix))