1 files changed, 2 insertions, 1 deletions
diff --git a/common.mk b/common.mk
index 39b3aec0a6..0d230dd70b 100644
--- a/common.mk
+++ b/common.mk
@@ -1321,9 +1321,10 @@ run.gdb:
 	echo '  quit'                         >> run.gdb
 	echo end                              >> run.gdb
 
+GDB = gdb
 
 gdb: miniruby$(EXEEXT) run.gdb PHONY
-	gdb -x run.gdb --quiet --args $(MINIRUBY) $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
+	$(GDB) -x run.gdb --quiet --args $(MINIRUBY) $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)
 
 gdb-ruby: $(PROGRAM) run.gdb PHONY
 	$(Q) $(RUNRUBY_COMMAND) $(RUNRUBY_DEBUGGER) -- $(RUNOPT0) $(TESTRUN_SCRIPT) $(RUNOPT)