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-rw-r--r--Makefile5
1 files changed, 5 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index c561b0c72..355b2a25e 100644
--- a/Makefile
+++ b/Makefile
@@ -608,6 +608,11 @@ $(eval $(call add_include_file,backends/cxxrtl/cxxrtl_vcd_capi.cc))
$(eval $(call add_include_file,backends/cxxrtl/cxxrtl_vcd_capi.h))
OBJS += kernel/driver.o kernel/register.o kernel/rtlil.o kernel/log.o kernel/calc.o kernel/yosys.o
+ifeq ($(ENABLE_ABC),1)
+ifneq ($(ABCEXTERNAL),)
+kernel/yosys.o: CXXFLAGS += -DABCEXTERNAL='"$(ABCEXTERNAL)"'
+endif
+endif
OBJS += kernel/cellaigs.o kernel/celledges.o kernel/satgen.o kernel/mem.o
kernel/log.o: CXXFLAGS += -DYOSYS_SRC='"$(YOSYS_SRC)"'