-RISCV_GCC = riscv-gcc
-RISCV_GCC_OPTS = -std=gnu99 -DSET_STATS -O2 -nostdlib -nostartfiles -ffast-math
-RISCV_LINK = riscv-gcc -T $(bmarkdir)/common/test.ld
-RISCV_LINK_MT = riscv-gcc -T $(bmarkdir)/common/test-mt.ld
-RISCV_LINK_OPTS = -lc
-RISCV_LINK_SYSCALL = $(bmarkdir)/common/syscalls.c -lc
-RISCV_OBJDUMP = riscv-objdump --disassemble-all --disassemble-zeroes --section=.text --section=.text.startup --section=.data
-RISCV_SIM = spike
+RISCV_PREFIX ?= riscv$(XLEN)-unknown-elf-
+RISCV_GCC ?= $(RISCV_PREFIX)gcc
+RISCV_GCC_OPTS ?= -mcmodel=medany -static -std=gnu99 -O2 -ffast-math -fno-common -fno-builtin-printf
+RISCV_LINK ?= $(RISCV_GCC) -T $(src_dir)/common/test.ld $(incs)
+RISCV_LINK_MT ?= $(RISCV_GCC) -T $(src_dir)/common/test-mt.ld
+RISCV_LINK_OPTS ?= -nostdlib -nostartfiles -ffast-math -lgcc
+RISCV_OBJDUMP ?= $(RISCV_PREFIX)objdump --disassemble-all --disassemble-zeroes --section=.text --section=.text.startup --section=.data
+RISCV_SIM ?= spike --isa=rv$(XLEN)gc