Use compiler:openmp to pull the correct CXX variable.

Add some notes about how to use theano in multi-threaded mode.

2 files changed, 19 insertions, 1 deletions

diff --git a/math/py-theano/Makefile b/math/py-theano/Makefile
index 5cd223f09022..35c4e3b98908 100644
--- a/math/py-theano/Makefile
+++ b/math/py-theano/Makefile
@@ -15,7 +15,10 @@ COMMENT=	Optimizing compiler for evaluating math expressions on CPUs and GPUs
 RUN_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}scipy>=0.8.0:${PORTSDIR}/science/py-scipy
 
-USES=		python
+USES=		compiler:openmp python
 USE_PYTHON=	concurrent distutils autoplist
 
+SUB_FILES=	pkg-message
+SUB_LIST=	CXX=${CXX}
+
 .include <bsd.port.mk>
diff --git a/math/py-theano/files/pkg-message.in b/math/py-theano/files/pkg-message.in
new file mode 100644
index 000000000000..37a8c3b330d9
--- /dev/null
+++ b/math/py-theano/files/pkg-message.in
@@ -0,0 +1,15 @@
+To use Theano in multi-threaded mode, install OpenBLAS with option
+OPENMP enabled, install py-numpy with OpenBLAS support and use this
+minimal ~/.theanorc:
+
+---------------------------
+[global]
+cxx = %%CXX%%
+openmp = True
+
+[blas]
+ldflags = -lopenblasp
+---------------------------
+
+You can control the number of threads used with OMP_NUM_THREADS environment
+variable.