riscv64-unknown-elf-g++: permission denied

[alberiolima]

Compiling, linux debian, Arduino IDE 2.1.1
...
..
~/.arduino15/packages/bouffalo/tools/riscv64-unknown-elf/0.0.1/bin/riscv64-unknown-elf-g++: permission denied

solved
chmod +x ~/.arduino15/packages/bouffalo/tools/riscv64-unknown-elf/0.0.1/bin/*