I do believe you can use SiFive's toolchain: https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.3.0-2019.08.0-x86_64-linux-ubuntu14.tar.gz
Then you don't have to compile it.
There is also Data61's Docker https://github.com/SEL4PROJ/seL4-CAmkES-L4v-dockerfiles
If you look at the make file there are some targets for including the RISC-V toolchain.
On 2019-11-11 1:58 a.m., Zhuang, Siwei (Data61, Kensington NSW) wrote:
> Hi Jacob,
> You need to enable multilib when building "riscv-gnu-toolchain".
> ./configure --prefix=/path-to-install-toolchain --enable-multilib
> make or make linux
> Running seL4 no longer requires RISC-V tools. In case you want to use Spike,
> I'd suggest building the riscv-isa-sim separately to get the latest code.
> On Sun, 2019-11-10 at 15:50 -0800, Jacob Yu wrote:
>> I am trying to build "seL4 tests" for "Spike" platform (the RISC-V
>> simulator from UC Berkeley) on Ubuntu 18.04.3 LTS, a 64-bit system.
>> First of all, I was able to build RISC-V tools with "build.sh" after
>> manually installing "riscv-gnu-toolchain" from GitHub as well as additional
>> python modules (future, ply, protobuf). I then kicked of "../init-build.sh
>> -DPLATFORM=spike -DRISCV64=TRUE -DSIMULATION=1" from local build directory.
>> After that, however, "ninja" command complained about "undefined reference
>> to `__nedf2'". I understand there is no FPU support in "Spike" platform so
>> a need for "soft-float" module. Where should I specify "-lsoft-fp"?
>> Any suggestions?
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