nios2-elf_8.0_osx_ppc install instructions
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requirements:
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* Apple Macintosh with a PowerPC processor.
* MacOS X 10.4.x [Tiger]

installation:
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1-if /opt (`ls /`) doesn't exist, create it (`mkdir /opt`).
2-enter /opt (`cd /opt`).
3-inflate the nios2-elf_8.0_osx_ppc.tar.gz archive (`tar -xvzf nios2-elf_8.0_osx_ppc.tar.gz`).
4-a new "nios2-elf" should now have appeared under /opt.
5-export the compilers binaries paths, add the following lines to your ~/.bashrc file:

# cross compiler(s)
export PATH=$PATH:/opt/nios2-elf/bin

or use the following command in the terminal:

echo "export PATH=\$PATH:/opt/nios2-elf/bin" > ~/.bashrc