在编译openocd环境的基础上，安装下述库，
pacman -S mingw-w64-x86_64-gdb
pacman -S bison
/home/riscv-gnu-toolchain/riscv-gdb/gdb/ada-exp.y: In function 'int ada_parse(parser_state*)':
/home/riscv-gnu-toolchain/riscv-gdb/gdb/ada-exp.y:736:15: error: 'yyin' was not declared in this scope; did you mean 'yyrline'?
/home/riscv-gnu-toolchain/riscv-gdb/gdb/ada-exp.y:736:3: error: 'lexer_init' was not declared in this scope; did you mean 'pex_init'?
In file included from /home/riscv-gnu-toolchain/riscv-gdb/gdb/ada-exp.y:56:
/home/riscv-gnu-toolchain/riscv-gdb/gdb/ada-exp.y: At global scope:
pacman -S zlib1g-dev -y
pacman -S libmpc-dev
pacman -S libmpfr-dev
pacman -S libgmp-dev
pacman -S build-essential
./configure --prefix=/opt/riscv32 --with-arch=rv32imac --with-abi=ilp32
编译完成后，make install，可以得到整个工具
