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Riscv Toolchain 构建

January 11, 2024 • 阅读: 3027 • 笔记&折腾

安装环境:

准备: binutils-2.37 源码包，gcc-11.1.0 源码包，newlib-4.1.0 源码包

设置安装环境目录

  • export RISCV=/usr/xx/

编译 binutils，准备: binutils-2.37 源码包

  • mkdir binutils-build

  • cd binutils-build

  • ../binutils-2.37/configure --target=riscv32-unknown-elf --prefix=$RISCV/usr --disable-werr

  • make -j4 && make install

编译 GCC, 准备：gcc-11.1.0 源码包

  • mkdir gcc-build

  • cd gcc-build

  • ../gcc-11.1.0/configure --target=riscv32-unknown-elf --prefix=$RISCV/usr --with-abi=ilp32 --with-arch=rv32ic --enable-languages=c,c++

或者

  • ../gcc-11.1.0/configure --prefix=$RISCV/usr --target=riscv32-unknown-elf --with-sysroot=$RISCV/usr/riscv32-unknown-elf --with-abi=ilp32 --with-arch=rv32imac --with-newlib --enable-languages=c,c++ --with-system-zlib --disable-shared --disable-threads --disable-tls --disable-libmudflap --disable-libmudflap --disable-libssp --disable-libquadmath --disable-libgomp --disable-nls --enable-checking=yes --disable-multilib  CFLAGS_FOR_TARGET="-Os -ffunction-sections -fdata-sections" CXXFLAGS_FOR_TARGET="-Os -ffunction-sections -fdata-sections"

修改 Makefile 搜索 -O2 -g 修改成 -Os 去掉 -g

  • make all-gcc all-target-libgcc -j8

  • make install-gcc install-target-libgcc

  • (make all && make install)

架构选择：

  • # --with-abi=ilp32 --with-arch=rv32imc

  • # --with-abi=ilp32f --with-arch=rv32imfc

  • # --with-abi=ilp32d --with-arch=rv32imfdc

编译 newlib, 准备: newlib-4.1.0 源码包

  • mkdir newlib-build

  • cd newlib-build

  • ../newlib-4.1.0/configure --target=riscv32-unknown-elf -disable-nls --enable-newlib-io-long-long --enable-newlib-io-long-double --enable-newlib-io-c99-formats --disable-libssp --prefix=$RISCV/usr

或者

  • ../newlib-4.1.0/configure --target=riscv32-unknown-elf -disable-nls --enable-newlib-io-long-long --enable-newlib-io-long-double --enable-newlib-io-c99-formats --disable-libssp --prefix=$RISCV/usr CFLAGS_FOR_TARGET="-Os -ffunction-sections -fdata-sections"  CXXFLAGS_FOR_TARGET="-Os -ffunction-sections -fdata-sections" 

  • --enable-newlib-multithread

  • make -j4 && make install

可选
nano-build， nano 库编译，一个轻量级的运行库，直接用 newlib-4.1.0 源码包编译

  • mkdir nano-build

  • cd nano-build

  • ../newlib-4.1.0/configure --target=riscv32-unknown-elf --prefix=$RISCV/usr --disable-newlib-supplied-syscalls --enable-newlib-reent-check-verify --enable-newlib-reent-small --enable-newlib-retargetable-locking --disable-newlib-fvwrite-in-streamio --disable-newlib-fseek-optimization --disable-newlib-wide-orient --enable-newlib-nano-malloc --disable-newlib-unbuf-stream-opt --enable-lite-exit --enable-newlib-global-atexit --enable-newlib-nano-formatted-io --disable-nls CFLAGS_FOR_TARGET="-Os -ffunction-sections -fdata-sections"  CXXFLAGS_FOR_TARGET="-Os -ffunction-sections -fdata-sections" 

  • make -j4

注意：不需要 make install
拷贝当前目录下的 libc.a libg.a libgloss.a libm.a 到对应的安装目录并改名为 libc_nano.a libg_nano.a libgloss_nano.a libm_nano.a
编译用户程序时 可以使用 选项 -specs=nano.specs --specs=nosys.specs，生成无系统调用版本

编译 qemu, riscv 程序运行模拟器。准备: qemu-6.0.0 源码包

  • mkdir qemu-build

  • cd qemu-build

  • ../qemu-6.0.0/configure --target-list=riscv32-softmmu,riscv32-linux-user --prefix=$RISCV/usr

  • make -j4 && make install

编译 gdb， 调试工具。准备: gdb-10.2 源码包

  • ../gdb-10.2/configure --target=riscv32-unknown-elf  --prefix=$RISCV/usr

  • make -j4 && make install
RISCV
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