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-rw-r--r--toolchain.inc4
1 files changed, 2 insertions, 2 deletions
diff --git a/toolchain.inc b/toolchain.inc
index 2375f17c81ba..b5b4fe0f41bb 100644
--- a/toolchain.inc
+++ b/toolchain.inc
@@ -95,8 +95,8 @@ OBJCOPY_$(1) := $(OBJCOPY_$(2))
OBJDUMP_$(1) := $(OBJDUMP_$(2))
STRIP_$(1) := $(STRIP_$(2))
READELF_$(1) := $(READELF_$(2))
-CFLAGS_$(1) = $$(CFLAGS_common) $$(CFLAGS_$(2))
-CPPFLAGS_$(1) = $$(CPPFLAGS_common) $$(CPPFLAGS_$(2))
+CFLAGS_$(1) += $$(CFLAGS_common) $$(CFLAGS_$(2))
+CPPFLAGS_$(1) += $$(CPPFLAGS_common) $$(CPPFLAGS_$(2))
LIBGCC_FILE_NAME_$(1) = $(wildcard $(shell $(CC_$(2)) $(CFLAGS_$(2)) -print-libgcc-file-name))
endef