Alembic 1.8.0 beta has been released.

[Lucas Miller]

Thanks to your feedback and issues we have a few bug fixes and enhancements.
If no major issues are found, we plan on promoting this to 1.8.0 after
a week or so.

You can grab it here:
https://github.com/alembic/alembic/releases/tag/1.8.0_beta

API:

We are dropping support for the ancient TR1 and expect the compilers to at
least support C++std11, we currently default to C++std14. Because we now
assume at least C++std11, we can remove ALEMBIC_LIB_USES_TR1 and
ALEMBIC_LIB_USES_BOOST and we instead expect the std versions of things like
shared_ptr. (Issue 312)

Python:

Support building python3, and make it the default, to build the bindings
against python2 use: -DUSE_PYALEMBIC=ON -DPYALEMBIC_PYTHON_MAJOR=2

Switch from __nonzero__ to __bool__ for the python3 bindings. (Issue 273)

Workaround the testCollections crash. (Issue 274)

Make the unit tests python 2 and python 3 compatible. (Issue 276)

Rework the python testing framework so they can be run from CMake. (Issue 278)

Switch from next to __next__ for the python3 bindings. (Issue 279)

CMake:

Update the minimum requirement to 3.13

Overhaul to support the recently released Imath 3.
(https://github.com/AcademySoftwareFoundation/Imath)

Lucas

[Lucas Miller]

Based on the feedback from 1.8.0_beta, I've added:

Fix for using Alembic as a 3rd party with Imath 3. (Issue 337)

You can grab it here:

https://github.com/alembic/alembic/releases/tag/1.8.0_beta2

Lucas

[Lucas Miller]

Thanks to your feedback we have pushed out 1.8.0 beta 3 a bug fix and
mentioning a couple of enhancements that were in the previous betas,
but not yet mentioned.

CMake:
Use Boost_VERSION_MACRO instead of Boost_VERSION. (PR 338)

Ogawa:
Better support emscripten and ARM toolchains by using memcpy to avoid
dereferencing non-aligned pointers. (PR 332)

AbcStitcher:
Propagate MetaData from the first of our ordered input archives over to the
stitched output. (PR 324)

You can grab it here:

https://github.com/alembic/alembic/releases/tag/1.8.0_beta3

On Sat, Apr 10, 2021 at 3:07 PM Lucas Miller <miller...@gmail.com> wrote:
>
> Looks like you hit a bug, double checking the docs Boost_Version changed its value in Cmake 3.15. It looks like Boost_Version_MACRO should be used instead.
>
> You will likely hit this issue in the latest stable release as well. I'll get this tested and patched into the 1.8 beta soon.
>
> Thanks,
>
> Lucas
>
> On Sat, Apr 10, 2021, 7:53 AM Richard Walters <richi...@gmail.com> wrote:
>>
>> Greetings All,
>>
>> (New member, 1st post.)
>>
>> I'm on Mac OS. One system is Catalina, the other is the M1 Big Sur.
>> Python 3.9.4
>> Homebrew for boost and boost_python.
>> I have Imath working fine, and I'm going after the Python hooks.
>>
>> Should I use the beta, or stable ? Advice ?
>>
>> On first compile with this beta ... I get the following:
>>
>> ```
>> -- Found Boost: /usr/local/Cellar/boost/1.75.0_2/lib/cmake/Boost-1.75.0/BoostConfig.cmake (found suitable version "1.75.0", minimum required is "1.53.0")
>> CMake Error at python/PyAlembic/CMakeLists.txt:50 (MESSAGE):
>> Boost VERSION IS TOO OLD.
>>
>>
>> -- Configuring incomplete, errors occurred!
>> ```
>>
>> Any words of wisdom appreciated ... I'm kindof new to compiling anything complex.
>>
>> thanks much,
>>
>> Richard

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