J Cube Alembic Builder

The provided scripts automatically compile everything (Alembic or Multiverse and all the dependencies), installing to a single directory ($TGT).

Before launching the scripts, be sure to checkout the most appropriate branch for your system, for example:

git checkout linux-gcc48-multiverse-2.0.0

Then before continuing, edit env-build-config.sh setting environment variables as desired. The most influential are:

• TGT: the target directory where everything will be installed (default: /opt/jcube)
• TARGET_64: if the target is 64 bit (default: yes)
• PYTHON_VERSION: if using 2.6 or 2.7 (default: 2.6)

Then, simply run:

./do-build-all.sh

CURRENT LIMITATIONS

The whole thing has been tested only on

• Ubuntu 12.04.4 LTS x86_64
• Centos 7.0.1406 x86_64
• Mac OS X 10.9.x (LLVM 5.1 clang-503.0.38 and LLVM 6.0 clang-600.0.56)

Perhaps some changes will be necessary if changing TGT to something else than /opt/jcube (especially inside Python own setup.py for Berkeley DB lib search and inside Alembic / Multiverse various CMakeLists.txt and build/Find*.cmake modules).

Only Python 2.6 has been tested.

The Python Alembic module gets compiled, but a couple of issues remain:

• the alembic module doesn't automatically load the imath module
• imath signatures do not match and throw errors

Regarding the first problem, it's necessary to load imath explicitly before alembic:

$ . env-build-setup.sh
$ type python
python is /opt/jcube/bin/python

$ python
Python 2.6.8 (unknown, Jan 20 2014, 15:57:43)
[GCC 4.6.3] on linux3
Type "help", "copyright", "credits" or "license" for more information.
>>> import alembic
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'NoneType' object has no attribute 'iex'

$ python
Python 2.6.8 (unknown, Jan 20 2014, 15:57:43)
[GCC 4.6.3] on linux3
Type "help", "copyright", "credits" or "license" for more information.
>>> import imath
>>> import alembic
>>> dir(alembic)
['Abc', 'AbcCollection', 'AbcCoreAbstract', 'AbcGeom', 'AbcMaterial', 'Util', '__doc__', '__file__', '__name__', '__package__', '__path__']
>>> iarch = alembic.Abc.IArchive('Alembic_Octopus_Example/alembic_octopus.abc')
>>> print "Reading", iarch.getName()
Reading Alembic_Octopus_Example/alembic_octopus.abc
>>> top = iarch.getTop()
>>> top.getName()
'ABC'

Regarding the second problem:

$ cd Alembic_1.5.3_2013121700/python/PyAlembic/Tests/
$ python testXform.py

Running testXformBinding
Traceback (most recent call last):
  File "testXform.py", line 204, in <module>
    test[1]()
  File "testXform.py", line 192, in testXformBinding
    xformOut()
  File "testXform.py", line 77, in xformOut
    asamp.addOp(transop, V3d(12.0, i+42.0, 20.0))
Boost.Python.ArgumentError: Python argument types in
    XformSample.addOp(XformSample, XformOp, V3d)
did not match C++ signature:
    addOp(Alembic::AbcGeom::v7::XformSample {lvalue}, Alembic::AbcGeom::v7::XformOp op)
    addOp(Alembic::AbcGeom::v7::XformSample {lvalue}, Alembic::AbcGeom::v7::XformOp axisRotateOp, double degrees)
    addOp(Alembic::AbcGeom::v7::XformSample {lvalue}, Alembic::AbcGeom::v7::XformOp matrixOp, Imath::Matrix44<double> matrix)
    addOp(Alembic::AbcGeom::v7::XformSample {lvalue}, Alembic::AbcGeom::v7::XformOp rotateOp, Imath::Vec3<double> axis, double degrees)
    addOp(Alembic::AbcGeom::v7::XformSample {lvalue}, Alembic::AbcGeom::v7::XformOp transOrScaleOp, Imath::Vec3<double> value)

Please see this thread for others having the same problem.

REFERENCES

• http://www.alembic.io/
• http://murphyrandle.apps.runkite.com/building-pyalembic/
• https://groups.google.com/forum/?fromgroups=#!topic/alembic-discussion/iqo1MKE4kyc
• https://groups.google.com/forum/?fromgroups=#!topic/alembic-discussion/7k5tQozZfTo
• http://stackoverflow.com/questions/19148564/getting-failed-to-build-these-modules-curses-curses-panel-ssl-while-install
• https://github.com/murphyrandle/murphyrandle.github.io/blob/master/_posts/2013-03-28-linking-order-matters.md
• https://github.com/murphyrandle/murphyrandle.github.io/blob/master/_posts/2013-02-23-building-pyalembic.md