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https://github.com/zephyrproject-rtos/zephyr
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ba776a1fd1
Compiling Zephyr with an external riscv32 toolchain would require the following env variables to be exported: export ZEPHYR_GCC_VARIANT=riscv32 export RISCV32_TOOLCHAIN_PATH=/PATH/TO/TOOLCHAIN/BINARY Change-Id: I2072ed9079a4cabd27837ab39b947bc0a0a1a8b4 Signed-off-by: Jean-Paul Etienne <fractalclone@gmail.com>
14 lines
424 B
Makefile
14 lines
424 B
Makefile
ifndef RISCV32_TOOLCHAIN_PATH
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$(error RISCV32_TOOLCHAIN_PATH is not set)
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endif
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CROSS_COMPILE = ${RISCV32_TOOLCHAIN_PATH}/bin/riscv32-unknown-elf-
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TOOLCHAIN_LIBS = gcc
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LIBGCC_DIR = $(shell dirname `$(CROSS_COMPILE)gcc ${KBUILD_CFLAGS} -print-libgcc-file-name`)
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LIB_INCLUDE_DIR += -L ${LIBGCC_DIR}
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TOOLCHAIN_CFLAGS = -I${RISCV32_TOOLCHAIN_PATH}/include
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export CROSS_COMPILE TOOLCHAIN_LIBS TOOLCHAIN_CFLAGS LIB_INCLUDE_DIR
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