c-ipfs

IPFS implementation in C, (not just an API client library).

getting started: https://github.com/ipfs/specs/blob/master/overviews/implement-ipfs.md
specifications: https://github.com/ipfs/specs
getting started: https://github.com/ipfs/community/issues/177
libp2p: https://github.com/libp2p/specs

Prerequisites: To compile the C version you will need:
lmdb https://github.com/jmjatlanta/lmdb
c-protobuf https://github.com/kenCode-de/c-protobuf
c-multihash https://github.com/kenCode-de/c-multihash
c-multiaddr https://github.com/kenCode-de/c-multiaddr
c-libp2p https://github.com/kenCode-de/c-libp2p

And of course this project at https://github.com/kenCode-de/c-ipfs

The compilation at this point is simple, but not very flexible. Place all of these projects in a directory. Compile all (the order above is recommended) by going into each one and running "make all".