1 files changed, 4 insertions, 0 deletions
diff --git a/Rules.mak b/Rules.mak
index 8943fbf85..9d621b5b7 100644
--- a/Rules.mak
+++ b/Rules.mak
@@ -804,6 +804,10 @@ ASFLAGS = $(ASFLAG_--noexecstack)
 
 LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y)
 $(eval $(call cache-output-var,LIBGCC,$(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name))
+$(eval $(call cache-output-var,LIBGCC_EH,$(CC) $(LIBGCC_CFLAGS) -print-file-name=libgcc_eh.a))
+# with -O0 we (e.g. lockf) might end up with references to
+# _Unwind_Resume, so pull in gcc_eh in this case..
+LIBGCC += $(if $(DODEBUG),$(LIBGCC_EH))
 LIBGCC_DIR:=$(dir $(LIBGCC))
 
 # moved from libpthread/linuxthreads