[h323plus] Compiling GnuGk / H323Plus / PTLib on Alpine Linux

Hi,

while GnuGk, H323Plus and PTLib work on virtually all Linux distributions, there is one notable exception: Alpine Linux.

This is because Alpine uses musl libc instead of GNU libc, which lacks many features and our PTLib won't compile with it.

Solution: Stick with any other Linux distribution (Debian, CentOS, Fedora etc.) or your choice of *BSD, Solaris or Windows.

Regards, Jan