11:27 danfe 

- Update `graphics/alembic' to version 1.7.1 [*]
- Make HDF5 support (and thus the dependency) optional
- USE_GL and Boost dependencies are no longer needed, remove them and
  their associated patch files
- Remove CMAKE_ARGS: it was setting values which are the defaults now
- Add missing USE_LDCONFIG and move USE_GITHUB together with other USE_*
  knobs: while it makes sense to have a dedicated GitHub-related block
  of knobs, single USE_GITHUB does not really warrant it
- Remove HDF5_ROOT gimmick for Alembic < 1.6.0's AlembicHDF5.cmake as it
  is no longer required (ditto for the patch)

Reported by:	portscout [*]

Because GitHub releases (tarballs) are not fetched with correct modification
time, set TIMESTAMP to 1490314701 which corresponds to commit 895a7c6 tagged
as this release.

 

14:36 danfe 

Unbreak the build on PowerPC, in a simple way: replace deprecated __sync_*
function with corresponding __atomic_* counterpart and link with libatomic
against GCC.  This should be no-op on Tier-1 architectures (against Clang),
since that code branch is guarded by __GNUC__ >= 4 && __GNUC_MINOR__ >= 4.