Can't build PyAlembic

[Doramas García]

Hello everybody,

I'm trying to build alembic to use it in python but I'm having some issues

I'm using Windows 11 and Cmake 3.29.3 GUI

Log when I press 'Generate':

----------------------------------------------------------------------------------

Selecting Windows SDK version 10.0.22621.0 to target Windows 10.0.22631.

CMAKE SYSTEM NAME: Windows

Defaulting CMAKE_CXX_STANDARD to 14

The install dir is C:/Program Files (x86)/Alembic

Found package Imath

Found Python 3.10.6

Found package Imath using: Imath::PyImath_Python3_10

CMake Warning (dev) at python/PyAlembic/CMakeLists.txt:44 (FIND_PACKAGE):
Policy CMP0144 is not set: find_package uses upper-case <PACKAGENAME>_ROOT
variables. Run "cmake --help-policy CMP0144" for policy details. Use the
cmake_policy command to set the policy and suppress this warning.

CMake variable BOOST_ROOT is set to:

C:/Users/manuel.gj/Downloads/boost

For compatibility, find_package is ignoring the variable, but code in a
.cmake module might still use it.
This warning is for project developers. Use -Wno-dev to suppress it.

Could NOT find Boost (missing: python310) (found suitable version "1.85.0", minimum required is "1.53.0")

Could NOT find Boost (missing: python3.10) (found suitable version "1.85.0", minimum required is "1.53.0")

BOOST INCLUDE DIRS: C:/Users/manuel.gj/Downloads/boost

BOOST LIBRARIES:

CMake Error at python/PyAlembic/Tests/CMakeLists.txt:49 (GET_TARGET_PROPERTY):
get_target_property() called with non-existent target
"Imath::PyImath_Python3_10".

CMake Error at cmake/AlembicArnold.cmake:89 (SET):
Syntax error in cmake code at

C:/Users/manuel.gj/Downloads/alembic_github/alembic/cmake/AlembicArnold.cmake:89

when parsing string

/nologo /dll /LIBPATH:\"%RMANTREE%\lib\" libai.lib

Invalid character escape '\l'.
Call Stack (most recent call first):
CMakeLists.txt:267 (INCLUDE)

Configuring incomplete, errors occurred!

----------------------------------------------------------------------------------

Can you help me? Thanks!

[Lucas Miller]

This is likely the same as:

https://github.com/alembic/alembic/issues/448

Which also got reported as an Imath issue here:

https://github.com/AcademySoftwareFoundation/Imath/issues/395

There is a workaround on the Linux side, but I'm not sure if that will work on Windows as well.

Lucas

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