Fix hardcoded library name

Author: martin-frbg

cpp_thread_test/Makefile

@@ -1,13 +1,14 @@
-include ../Makefile.rule
+TOPDIR = ..
+include $(TOPDIR)/Makefile.system
 
 all :: dgemv_tester dgemm_tester
 
 dgemv_tester :
-	$(CXX) $(COMMON_OPT) -Wall -Wextra -Wshadow -fopenmp -std=c++11 dgemv_thread_safety.cpp ../libopenblas.a -lpthread -o dgemv_tester
+	$(CXX) $(COMMON_OPT) -Wall -Wextra -Wshadow -fopenmp -std=c++11 dgemv_thread_safety.cpp ../$(LIBNAME) $(EXTRALIB) $(FEXTRALIB) -o dgemv_tester
 	./dgemv_tester
 
 dgemm_tester : dgemv_tester
-	$(CXX) $(COMMON_OPT) -Wall -Wextra -Wshadow -fopenmp -std=c++11 dgemm_thread_safety.cpp ../libopenblas.a -lpthread -o dgemm_tester
+	$(CXX) $(COMMON_OPT) -Wall -Wextra -Wshadow -fopenmp -std=c++11 dgemm_thread_safety.cpp ../$(LIBNAME) $(EXTRALIB) $(FEXTRALIB) -o dgemm_tester
 	./dgemm_tester
 
 clean ::