satman: simplify Makefile.

artiq/firmware/satman/Makefile

@@ -1,26 +1,15 @@
 include ../include/generated/variables.mak
 include $(MISOC_DIRECTORY)/software/common.mak
 
-PYTHON ?= python3
+LDFLAGS += -L../libbase
 
-RUSTOUT := cargo/or1k-unknown-none/debug
-
-LDFLAGS += --gc-sections \
-	-L../libbase
-
-RUSTFLAGS = \
-	-C target-feature=+mul,+div,+ffl1,+cmov,+addc \
-	-C opt-level=s \
-	-C panic=abort
-export RUSTFLAGS
+RUSTFLAGS += -Cpanic=abort
 
 all: satman.bin satman.fbi
 
 .PHONY: $(RUSTOUT)/libsatman.a
 $(RUSTOUT)/libsatman.a:
-	CARGO_TARGET_DIR=$(realpath .)/cargo \
-		cargo build --target=or1k-unknown-none \
-			--manifest-path $(realpath $(SATMAN_DIRECTORY))/Cargo.toml
+	$(cargo) --manifest-path $(SATMAN_DIRECTORY)/Cargo.toml
 
 satman.elf: $(RUSTOUT)/libsatman.a
 	$(LD) $(LDFLAGS) -T $(SATMAN_DIRECTORY)/satman.ld -o $@ $^
@@ -34,7 +23,7 @@ satman.elf: $(RUSTOUT)/libsatman.a
 	@echo " MSCIMG  " $@ && $(PYTHON) -m misoc.tools.mkmscimg -f -o $@ $<
 
 clean:
-	$(RM) satman.elf satman.bin satman.fbi .*~ *~
+	$(RM) satman.elf satman.bin satman.fbi
 	$(RM) -rf cargo
 
 .PHONY: all clean