PKG_LIBS = $(LAPACK_LIBS) $(BLAS_LIBS) $(FLIBS) -lpthread
PKG_CPPFLAGS = -isystem$(INST_INCLUDE_DIR)/Eigen \
               -I../inst/include \
               -DARMA_64BIT_WORD=1 \
               -DEIGEN_MAX_ALIGN_BYTES=32
