关于riscv编译工具链的问题

[codetang-2417]

在文件./build.sh中，有以下几条路径

GLIB_ELF_CROSS_COMPILE_DIR=/opt/gcc-riscv64-unknown-linux-gnu
GLIB_ELF_CROSS_PREFIX=$GLIB_ELF_CROSS_COMPILE_DIR/bin/riscv64-unknown-linux-gnu
GLIB_ELF_CROSS_PREFIX_SYSROOT_DIR=$GLIB_ELF_CROSS_COMPILE_DIR/sysroot
NEWLIB_ELF_CROSS_COMPILE_DIR=/home/tc/Desktop/riscv-tool/riscv/
NEWLIB_ELF_CROSS_PREFIX=$NEWLIB_ELF_CROSS_COMPILE_DIR/bin/riscv64-unknown-elf

我在文档中没有找到对应的编译器安装路径的描述，也去官方的仓库（ch22章节提到了换源码编译工具）尝试自己编译源码看看能不能出现对应的文件夹，但是仓库中包含的子仓库太大，导致没法下载，甚至因此自己搭了个vps，但是很遗憾，有一些子库好像并未开放，没法完全clone下来。
我想问问您是怎么将仓库clone下来的？
下面是clone报错代码

Cloning into '/home/tc/Desktop/riscv-gnu-toolchain/musl'...
fatal: remote error: access denied or repository not exported: /git/musl
fatal: clone of 'git://git.musl-libc.org/git/musl' into submodule path '/home/tc/Desktop/riscv-gnu-toolchain/musl' failed
Failed to clone 'musl'. Retry scheduled
Cloning into '/home/tc/Desktop/riscv-gnu-toolchain/pk'...
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
fatal: clone of 'git://github.com/riscv-software-src/riscv-pk.git' into submodule path '/home/tc/Desktop/riscv-gnu-toolchain/pk' failed
Failed to clone 'pk'. Retry scheduled
Cloning into '/home/tc/Desktop/riscv-gnu-toolchain/qemu'...
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
fatal: clone of 'git://gitlab.com/qemu-project/qemu.git' into submodule path '/home/tc/Desktop/riscv-gnu-toolchain/qemu' failed
Failed to clone 'qemu'. Retry scheduled
Cloning into '/home/tc/Desktop/riscv-gnu-toolchain/spike'...
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
fatal: clone of 'git://github.com/riscv-software-src/riscv-isa-sim.git' into submodule path '/home/tc/Desktop/riscv-gnu-toolchain/spike' failed
Failed to clone 'spike'. Retry scheduled
Cloning into '/home/tc/Desktop/riscv-gnu-toolchain/musl'...
fatal: remote error: access denied or repository not exported: /git/musl
fatal: clone of 'git://git.musl-libc.org/git/musl' into submodule path '/home/tc/Desktop/riscv-gnu-toolchain/musl' failed
Failed to clone 'musl' a second time, aborting

[QQxiaoming]

关于工具链你也可以在这两个地址下载预构建的版本，这也是我在github action中使用的版本。

https://github.com/riscv/riscv-gnu-toolchain/releases/download/2021.08.07/riscv64-glibc-ubuntu-20.04-nightly-2021.08.07-nightly.tar.gz
https://static.dev.sifive.com/dev-tools/freedom-tools/v2020.12/riscv64-unknown-elf-toolchain-10.2.0-2020.12.8-x86_64-linux-ubuntu14.tar.gz

关于ch22章节工具链源码你无法clone的问题可能只是你的网络环境的问题，我无法帮你解决它，不过你如果你需要可以通过邮件的方式联系到我，我可以用其他的方式把我clone的副本发送给你。

[codetang-2417]

谢谢！

[adrain-yu]

用于裸机带newlib的gcc

./configure --prefix=/opt/gcc-riscv64-unknown-elf --with-cmodel=medany
make -j16

用于linux带glibc的gcc

./configure --prefix=/opt/gcc-riscv64-unknown-linux-gnu
make linux -j16

使用ch22 的指令编译出来的工具链 编译 mask rom会报错：
unrecognized opcode fence.i', extension zifencei' required

[QQxiaoming]

用于裸机带newlib的gcc

./configure --prefix=/opt/gcc-riscv64-unknown-elf --with-cmodel=medany make -j16

用于linux带glibc的gcc

./configure --prefix=/opt/gcc-riscv64-unknown-linux-gnu make linux -j16

使用ch22 的指令编译出来的工具链 编译 mask rom会报错： unrecognized opcode fence.i', extension zifencei' required

@adrain-yu 我当初使用的是tag 2021.08.07 版本的工具链源码，提交哈希码：c98135b7edfa5356f92c6146c1622f683e90d177
最新版本我还没适配更新

[adrain-yu]

好的 我在尝试一次 不行 就直接用上面的工具链了

[adrain-yu]

使用发布的工具联可以compile了

[sunmin89]

• wsl ubuntu 20.04 ,我这样配置编译基本能过

GLIB_ELF_CROSS_PREFIX=/home/sunmin/bins/Xuantie-900-gcc-linux-6.6.0-glibc-x86_64-V2.10.1/bin/riscv64-unknown-linux-gnu
GLIB_ELF_CROSS_PREFIX_SYSROOT_DIR=/home/sunmin/bins/Xuantie-900-gcc-linux-6.6.0-glibc-x86_64-V2.10.1/sysroot
NEWLIB_ELF_CROSS_PREFIX=/home/sunmin/bins/Xuantie-900-gcc-elf-newlib-x86_64-V2.10.2/bin/riscv64-unknown-elf

• 编译 kernel 之前，似乎还需要额外装两个依赖

sudo apt install -y libgmp-dev libmpc-dev

• 快结束的时候报错了，看起来是 wsl 的问题，不确定物理机会不会遇到这个问题

- ----------------------------- 合成文件系统映像 -----------------------------
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB, 4.0 GiB) copied, 2.75411 s, 1.6 GB/s
Error getting authority: Error initializing authority: Could not connect: No such file or directory