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Explain how to build FOSS in cosmocc README

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Justine Tunney 2023-12-09 06:56:21 -08:00
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@ -163,6 +163,23 @@ being passed to the freestanding Linux compiler.
(cd /home/jart/cosmocc; bin/pecheck hello)
```
## Building Open Source Software
Assuming you put `cosmocc/bin/` on your `$PATH`, integrating with GNU
Autotools projects becomes easy. The trick here is to use a `--prefix`
that *only* contains software that's been built by cosmocc. That's
because Cosmopolitan Libc uses a different ABI than your distro.
```sh
export CC="cosmocc -I/opt/cosmos/include -L/opt/cosmos/lib"
export CXX="cosmoc++ -I/opt/cosmos/include -L/opt/cosmos/lib"
export INSTALL=cosmoinstall
export AR=cosmoar
./configure --prefix=/opt/cosmos
make -j
make install
```
## Tools
While the GNU GCC and Binutils programs included in your `cosmocc`