[Bug 243958] net-p2p/libtorrent-rasterbar : Fails to build on FreeBSD 12.1-RELEASE-p1 powerpc 32 bit : libtorrent-rasterbar.so.1.2.3: undefined reference to `__atomic_compare_exchange_8'

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243958

Piotr Kubaj <pkubaj at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #213081|0                           |1
        is obsolete|                            |
 Attachment #213081|maintainer-approval?(yuri at f |
              Flags|reebsd.org)                 |
 Attachment #213565|                            |maintainer-approval?(yuri at f
              Flags|                            |reebsd.org)

--- Comment #6 from Piotr Kubaj <pkubaj at FreeBSD.org> ---
Created attachment 213565
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=213565&action=edit
v3

Better patch.
- instead of using LLVM 9, use GCC. On powerpc head, build fails with LLVM 9
(but completes with 10 or GCC). GCC should work just about everywhere.
- -DBOOST_ASIO_DISABLE_STD_EXPERIMENTAL_STRING_VIEW is necessary because boost
wants to include headers that are not available in GCC
- Add USES=localbase:ldflags instead of modifying LDFLAGS manually.

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