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riscv-software-src
How could i install riscv32-unknown-elf binaries?
I have installed riscv-gnu-toolchain in my Ubuntu 18.04.3 and got riscv64-unknown-elf binaries. But i need to install riscv32-unknown-elf binaries. please suggest how can i do that? Thanks in advance.
If you use --enable-multilib, then you can use a rv64 compiler as a rv32 compiler by adding -march=X -mabi=Y options. This is the way the toolchain is intended to be used.
But if you really need a rv32 compiler you can specify --with-arch=rv32gc or whatever architecture you want when configuring. You will also need to specify --with-abi=ilp32d or whatever abi you want.
Hi, I tried with above mentioned inputs..
./configure --prefix=/home/system/Desktop/elf32-toolchain --with-arch=rv32gc --with-abi=ilp32d make
As a result, got the 32bit binaries. After executing a sample program, a linker error message coming.
please find the attachment below.
Seems like you invoke riscv32-unknown-elf-gcc from pulp-toolchain instead of elf32-toolchiain? Try ./riscv32-unknown-elf-gcc -o sample sample.c at ~/Desktop/elf32-toolchain/bin again?
@kito-cheng thank you very much. seems like it is the problem.after that done, i am getting below error. ../pk/elf.c:40: assertion failed: IS_ELF64(eh) as pk is built for 64bit. What is the exact command to build 32bit versions of pk?
pk/elf.c does
#if __riscv_xlen == 64 assert(IS_ELF64(eh)); #else assert(IS_ELF32(eh)); #endif
so you should get a 32-bit pk if you use a riscv32 compiler to build it.
The toplevel build.sh has CC= CXX= build_project riscv-pk --prefix=$RISCV --host=riscv64-unknown-elf so using --host=riscv32-unknown-elf should work. There is no default support for building a 32-bit pk so you will have to hack the build to get it.