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Update gcc installation instruction

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Current installation instruction installs an older gcc which does not support all ISA instruction types passed in `-march` flags
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Liana Koleva 2023-09-29 09:41:12 +02:00 committed by GitHub
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@ -166,8 +166,10 @@ $ ./litex_setup.py --update
3. Install a RISC-V toolchain (Only if you want to test/create a SoC with a CPU): 3. Install a RISC-V toolchain (Only if you want to test/create a SoC with a CPU):
```sh ```sh
$ pip3 install meson ninja $ git clone --recursive https://github.com/riscv/riscv-gnu-toolchain
$ ./litex_setup.py --gcc=riscv $ cd riscv-gnu-toolchain
$ ./configure --prefix=$HOME/RISCV --enable-multilib
$ make newlib linux
``` ```
4. Build the target of your board...: 4. Build the target of your board...: