diff --git a/Makefile b/Makefile
index 8b80ddc..93df9d6 100644
--- a/Makefile
+++ b/Makefile
@@ -81,6 +81,11 @@ FFLAGS   += -Wfatal-errors
 LDFLAGS  += -L$(LIBDIR)
 CPPFLAGS += -DREVISION=\"$(GIT_REV)$(GIT_DIRTY)\" -DPREFIX=\"$(PREFIX)\"
 
+ifdef PARALLEL
+FFLAGS  += -ftree-parallelize-loops=$(PARALLEL) -fopt-info-loop
+LDFLAGS += -fopenmp
+endif
+
 # Sync the output from jobs running in parallel
 MAKEFLAGS += --output-sync