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-rw-r--r--Makefile.inner3
1 files changed, 2 insertions, 1 deletions
diff --git a/Makefile.inner b/Makefile.inner
index 5838b33..635cc64 100644
--- a/Makefile.inner
+++ b/Makefile.inner
@@ -58,7 +58,8 @@ $(BUILD)/$(TOP).json: $(SYN_FILES) | $(BUILD)
$(BUILD)/$(TOP)_pnr.json: $(BUILD)/$(TOP).json $(CST)
nextpnr-himbaechel --json $< --write $@ \
--device $(DEVICE) --vopt family=GW5A-25A --vopt cst=$(CST) \
- --vopt sspi_as_gpio --freq 50 --report $(BUILD)/$(TOP)_timing.json
+ --vopt sspi_as_gpio --freq 50 --report $(BUILD)/$(TOP)_timing.json \
+ --threads $(shell nproc)
# Pack bitstream
$(BUILD)/$(TOP).fs: $(BUILD)/$(TOP)_pnr.json