x86_64 precompiled libraries are badly linked

[ukch]

I am trying to build my own library on top of this library. When running my tests, the native C libraries (e.g. libcomplex.so, libfec.so) will not load and I get the following error in Java:

java.lang.UnsatisfiedLinkError: /path/to/org.quietmodem.Quiet/quiet/build/libs/x86_64/libfec.so: /usr/lib/x86_64-linux-gnu/libc.so: invalid ELF header
	at java.lang.ClassLoader$NativeLibrary.load(Native Method)
	at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857)
	at java.lang.Runtime.loadLibrary0(Runtime.java:870)
	at java.lang.System.loadLibrary(System.java:1122)
	at org.quietmodem.Quiet.QuietInit.init(QuietInit.java:15)
	at org.quietmodem.Quiet.FrameTransmitterConfig.<clinit> (FrameTransmitterConfig.java:58)
        ...

Running ldd on the precompiled libfec.so yields this output:

$ ldd libfec.so
libfec.so: error while loading shared libraries: /usr/lib/x86_64-linux-gnu/libc.so: invalid ELF header

(On my system, the correct path for libc.so is /lib/x86_64-linux-gnu/libc.so.6)

Here's some details of my system:

$ uname -r
4.16.0-2-amd64
$ lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 10 (buster)
Release:	10
Codename:	buster

Manually recompiling the libraries seems to resolve the problem. If you think this would be an appropriate solution, I am happy to send a PR with the recompiled libraries.