diff --git a/solenv/gbuild/platform/unxgcc.mk b/solenv/gbuild/platform/unxgcc.mk
index eaa567e..a380900 100644
--- a/solenv/gbuild/platform/unxgcc.mk
+++ b/solenv/gbuild/platform/unxgcc.mk
@@ -149,7 +149,7 @@ else
 gb_COMPILEROPTFLAGS := $(gb_COMPILERDEFAULTOPTFLAGS)
 endif
 
-gb_COMPILERNOOPTFLAGS := -O0
+gb_COMPILERNOOPTFLAGS := -O0 $(CXXFLAGS)
 
 ifeq ($(gb_SYMBOL),$(true))
 gb_LINKERSTRIPDEBUGFLAGS :=