Add OPENBLAS math library option

Author: johngebbie

src/Makefile

@@ -7,6 +7,7 @@ CUDA_ROOT?=/usr/local/cuda
 USE_SHARED?=0
 # Math libraries
 HAVE_OPENBLAS_CLAPACK?=1
+HAVE_OPENBLAS?=0
 HAVE_MKL?=0
 HAVE_ACCELERATE=0
 HAVE_CUDA?=0
@@ -80,6 +81,15 @@ ifeq ($(HAVE_OPENBLAS_CLAPACK), 1)
     endif
 endif
 
+ifeq ($(HAVE_OPENBLAS), 1)
+    CFLAGS += -I$(OPENBLAS_ROOT)/include
+    ifeq ($(USE_SHARED), 0)
+        LIBS += $(OPENBLAS_ROOT)/lib/libopenblas.a
+    else
+        LDFLAGS += -lopenblas -lgfortan
+    endif
+endif
+
 ifeq ($(HAVE_MKL), 1)
     CFLAGS += -DHAVE_MKL=1 -I$(MKL_ROOT)/include
     LDFLAGS += -L$(MKL_ROOT)/lib/intel64 -Wl,-rpath=$(MKL_ROOT)/lib/intel64 -lmkl_rt -lmkl_intel_lp64 -lmkl_core -lmkl_sequential