How do I build a .so version of librsync?

Ian Reed

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Oct 11, 2015, 9:30:32 AM10/11/15

to librsync

What is the easiest way for me to build a .so version of librsync in linux?

I actually want the 3 CFFI functions exposed in this Windows fork:
https://github.com/LennardF1989/librsync

So I'm using the rdiff.c from that fork and have fixed the warnings about missing prototypes and unused variables.
I've tried to research how to use libtools to build a .so file.
Running these commands gets me the closest so far:
./configure --enable-shared
make all check

But outputs these errors:
./.libs/librsync.so: undefined reference to `blake2b_init'
./.libs/librsync.so: undefined reference to `blake2b_update'
./.libs/librsync.so: undefined reference to `blake2b_final'
./.libs/librsync.so: undefined reference to `RollsumUpdate'

I think I'll need rdiff.so because the 3 CFFI calls I want are defined in rdiff.c.

Any guidance is appreciated.

Martin Pool

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Oct 16, 2015, 1:15:24 PM10/16/15

to Ian Reed, librsync

That sounds like a bug in the Makefile.am causing the blake2 functions not to properly link in.

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Martin

Martin Pool

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Nov 14, 2015, 12:51:21 PM11/14/15

to Ian Reed, librsync

I can seem to build a shared library on linux from librsync head, so I guess that fork's Makefile.am is out of date.