Introduce further adjustments to the renaming of libmd
symbols: make sure that we do not generate dangling weak
aliases, as this causes build failures on MIPS.
Tested by: sbruno
Add a prefix to all symbols in libmd to avoid incompatibilites
with same-named, but not binary compatible, symbols from libcrypto.
Also introduce Weak aliases to avoid the need to rebuild dependent
binaries and a major version bump.
PR: 199119
Differential Revision: D2216
Reviewed by: roberto, delphij
MFC after: 2 weeks
It is automatically set when -fPIC is passed to the compiler.
Reviewed by: dim, kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D1179
