glTF addon: libextern_draco.so is missing #69089

New Issue

Martin Capitanio · 2019-08-23T15:31:50+02:00

Martin Capitanio commented

2019-08-23 15:31:50 +02:00

Blender Version
Broken: edbf15d3c0 232049dd94
Worked: 2.80 release

blender-2.81-daba3e871ff5-linux-glibc217-x86_64$ blender -v
Blender 2.81 (sub 3)
	build date: 2019-08-21
	build time: 01:08:15
	build commit date: 2019-08-20
	build commit time: 22:35
	build hash: daba3e871ff5
	build platform: Linux
	build type: Release
	build c flags:  -Wall -Wcast-align -Werror=implicit-function-declaration -Werror=return-type -Werror=vla -Wstrict-prototypes -Wmissing-prototypes -Wno-char-subscripts -Wno-unknown-pragmas -Wpointer-arith -Wunused-parameter -Wwrite-strings -Wlogical-op -Wundef -Winit-self -Wnonnull -Wmissing-include-dirs -Wno-div-by-zero -Wtype-limits -Wformat-signedness -Wuninitialized -Wredundant-decls -Wshadow -Wno-error=unused-but-set-variable  -fuse-ld=gold -std=gnu11   -msse -pipe -fPIC -funsigned-char -fno-strict-aliasing -msse2
	build c++ flags:  -Wredundant-decls -Wall -Wno-invalid-offsetof -Wno-sign-compare -Wlogical-op -Winit-self -Wmissing-include-dirs -Wno-div-by-zero -Wtype-limits -Werror=return-type -Werror=implicit-function-declaration -Wno-char-subscripts -Wno-unknown-pragmas -Wpointer-arith -Wunused-parameter -Wwrite-strings -Wundef -Wformat-signedness -Wuninitialized -Wundef -Wmissing-declarations  -fuse-ld=gold -std=c++11   -msse -pipe -fPIC -funsigned-char -fno-strict-aliasing -msse2
	build link flags:  -Wl,--version-script='/home/sources/buildbot-x86_64-slave/linux_glibc217_x86_64_cmake/blender.git/source/creator/blender.map'
	build system: CMake

Exact steps for others to reproduce the error
Download

This is printed by using the glTF addon:

blender-2.81-daba3e871ff5-linux-glibc217-x86_64/2.80/python/lib/python3.7/site-packages/libextern_draco.so'
does not exist, draco mesh compression not available

Most likely, the library build was broken after the Python 3.7.4 upgrade 454daf9b6b

**Blender Version** Broken: edbf15d3c0 232049dd94 Worked: 2.80 release ``` blender-2.81-daba3e871ff5-linux-glibc217-x86_64$ blender -v Blender 2.81 (sub 3) build date: 2019-08-21 build time: 01:08:15 build commit date: 2019-08-20 build commit time: 22:35 build hash: daba3e871ff5 build platform: Linux build type: Release build c flags: -Wall -Wcast-align -Werror=implicit-function-declaration -Werror=return-type -Werror=vla -Wstrict-prototypes -Wmissing-prototypes -Wno-char-subscripts -Wno-unknown-pragmas -Wpointer-arith -Wunused-parameter -Wwrite-strings -Wlogical-op -Wundef -Winit-self -Wnonnull -Wmissing-include-dirs -Wno-div-by-zero -Wtype-limits -Wformat-signedness -Wuninitialized -Wredundant-decls -Wshadow -Wno-error=unused-but-set-variable -fuse-ld=gold -std=gnu11 -msse -pipe -fPIC -funsigned-char -fno-strict-aliasing -msse2 build c++ flags: -Wredundant-decls -Wall -Wno-invalid-offsetof -Wno-sign-compare -Wlogical-op -Winit-self -Wmissing-include-dirs -Wno-div-by-zero -Wtype-limits -Werror=return-type -Werror=implicit-function-declaration -Wno-char-subscripts -Wno-unknown-pragmas -Wpointer-arith -Wunused-parameter -Wwrite-strings -Wundef -Wformat-signedness -Wuninitialized -Wundef -Wmissing-declarations -fuse-ld=gold -std=c++11 -msse -pipe -fPIC -funsigned-char -fno-strict-aliasing -msse2 build link flags: -Wl,--version-script='/home/sources/buildbot-x86_64-slave/linux_glibc217_x86_64_cmake/blender.git/source/creator/blender.map' build system: CMake ``` **Exact steps for others to reproduce the error** Download ![image.png](https://archive.blender.org/developer/F7694032/image.png) This is printed by using the glTF addon: ``` blender-2.81-daba3e871ff5-linux-glibc217-x86_64/2.80/python/lib/python3.7/site-packages/libextern_draco.so' does not exist, draco mesh compression not available ``` Most likely, the library build was broken after the Python 3.7.4 upgrade 454daf9b6b

Martin Capitanio commented

2019-08-23 15:31:50 +02:00

Added subscriber: @capnm

Julien Duroure self-assigned this 2019-08-23 16:35:02 +02:00

Brecht Van Lommel commented

2019-08-23 16:40:11 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-08-23 16:40:11 +02:00

Seems glTF is hardcoding the Blender and Python version, this should be avoided.

Martin Capitanio commented

2019-08-23 17:18:33 +02:00

On a closer look, the Python version is there, but indeed path is hardcoded
2.81/python/lib/python3.7/site-packages/libextern_draco.so

io/exp/gltf2_io_draco_compression_extension.py:29

    lib_name = 'extern_draco'
    blender_root = Path(bpy.app.binary_path).parent
    python_lib = Path('2.80/python/lib')
    paths = {
        'win32': blender_root/python_lib/'site-packages'/'{}.dll'.format(lib_name),
        'linux': blender_root/python_lib/'python3.7'/'site-packages'/'lib{}.so'.format(lib_name),
        'darwin': blender_root.parent/'Resources'/python_lib/'python3.7'/'site-packages'/'lib{}.dylib'.format(lib_name)
    }

On a closer look, the Python version is there, but indeed path is hardcoded **2.81**/python/lib/python3.7/site-packages/libextern_draco.so ``` io/exp/gltf2_io_draco_compression_extension.py:29 lib_name = 'extern_draco' blender_root = Path(bpy.app.binary_path).parent python_lib = Path('2.80/python/lib') paths = { 'win32': blender_root/python_lib/'site-packages'/'{}.dll'.format(lib_name), 'linux': blender_root/python_lib/'python3.7'/'site-packages'/'lib{}.so'.format(lib_name), 'darwin': blender_root.parent/'Resources'/python_lib/'python3.7'/'site-packages'/'lib{}.dylib'.format(lib_name) } ```

blender-admin commented

2019-08-24 09:15:07 +02:00

This issue was referenced by blender/blender-addons@50394a12df

This issue was referenced by blender/blender-addons@50394a12df3f40c2df0ae1c55e7060e0cb12327f

Julien Duroure commented

2019-08-24 09:18:29 +02:00

Changed status from 'Open' to: 'Resolved'

Julien Duroure closed this issue

2019-08-24 09:18:29 +02:00

Yura Nosenko commented

2020-05-21 07:45:35 +02:00

Added subscriber: @yuranos

Yura Nosenko commented

2020-05-21 07:45:35 +02:00

@JulienDuroure , I've built bpy as a module last weekend. It's 2.90 chain. I explained my steps in detail here .
However, I'm still having an issue with libextern_draco.so.
Check my question here .

@JulienDuroure , I've built bpy as a module last weekend. It's 2.90 chain. I explained my steps in detail [here ](https://blender.stackexchange.com/a/178746/95351). However, I'm still having an issue with libextern_draco.so. Check my question [here ](https://blender.stackexchange.com/questions/179260/bpy-libextern-draco-so-does-not-exist).

Julien Duroure commented

2020-05-23 12:16:07 +02:00

Added subscribers: @mont29, @ideasman42

Julien Duroure commented

2020-05-23 12:16:07 +02:00

@mont29 @ideasman42

Hello Bastien, Campbell,
Seems the draco library is not included when building bpy as a python module.
Because this is a building issue, not sure if I need to open a new issue or not.

Julien

@mont29 @ideasman42 Hello Bastien, Campbell, Seems the draco library is not included when building bpy as a python module. Because this is a building issue, not sure if I need to open a new issue or not. Julien

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

glTF addon: libextern_draco.so is missing #69089