Add static library target

Makefile

@@ -8,7 +8,7 @@ OS = $(shell uname)
 
 all: train predict
 
-lib: linear.o newton.o blas/blas.a
+lib: linear.o newton.o blas/blas.a liblinear.a
 	if [ "$(OS)" = "Darwin" ]; then \
 		SHARED_LIB_FLAG="-dynamiclib -Wl,-install_name,liblinear.so.$(SHVER)"; \
 	else \
@@ -31,7 +31,10 @@ linear.o: linear.cpp linear.h
 blas/blas.a: blas/*.c blas/*.h
 	make -C blas OPTFLAGS='$(CFLAGS)' CC='$(CC)';
 
+liblinear.a: linear.o newton.o
+	ar -rcvs liblinear.a linear.o newton.o blas/*.o
+
 clean:
 	make -C blas clean
 	make -C matlab clean
-	rm -f *~ newton.o linear.o train predict liblinear.so.$(SHVER)
+	rm -f *~ newton.o linear.o train predict liblinear.a liblinear.so.$(SHVER)