# TBB issues when building - both via build\_usd.py and manually **URL:** \ **Category:** Build and Deployment\ **Created:** [April 22, 2025, 7:10pm UTC](https://forum.aousd.org/t/tbb-issues-when-building-both-via-build-usd-py-and-manually/2392 "2025-04-22T19:10:00Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![robp\_sidefx](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.aousd.org/robp_sidefx/32/327_2.png) [@robp\_sidefx](https://forum.aousd.org/u/robp_sidefx)\ **Post date:** [April 22, 2025, 7:10pm UTC](https://forum.aousd.org/t/tbb-issues-when-building-both-via-build-usd-py-and-manually/2392/1 "2025-04-22T19:10:00Z")
The `build_usd.py` script downloads and builds a version of TBB, but it doesn’t seem like it’s being picked up during the build of USD itself. Similarly, `BUILDING.md` suggests setting `-DTBB_ROOT_DIR` when invoking `cmake` but, when I do that, I get: ```auto CMake Warning: Manually-specified variables were not used by the project: TBB_ROOT_DIR ``` All of this spawns from: ```auto $ python3 build_scripts/build_usd.py -vv -j 1 /home/robp/dev/github/_usd Building with settings: USD source directory /home/robp/dev/github/USD USD install directory /home/robp/dev/github/_usd 3rd-party source directory /home/robp/dev/github/_usd/src 3rd-party install directory /home/robp/dev/github/_usd Build directory /home/robp/dev/github/_usd/build ... [26%] Building CXX object pxr/base/work/CMakeFiles/work.dir/detachedTask.cpp.o In file included from /home/robp/dev/github/USD/pxr/base/work/detachedTask.h:15, from /home/robp/dev/github/USD/pxr/base/work/detachedTask.cpp:9: /home/robp/dev/github/USD/pxr/base/work/dispatcher.h: In constructor ‘pxrInternal_v0_25_5 __pxrReserved__ ::WorkDispatcher::_TaskGroup::_TaskGroup(tbb::detail::d1::task_group_context&)’: /home/robp/dev/github/USD/pxr/base/work/dispatcher.h:205:71: error: no matching function for call to ‘tbb::detail::d1::task_group::task_group(tbb::detail::d1::task_group_context&)’ 205 | _TaskGroup(tbb::task_group_context& ctx) : tbb::task_group(ctx) {} | ^ In file included from /usr/include/tbb/task_group.h:17, from /home/robp/dev/github/USD/pxr/base/work/dispatcher.h:24, from /home/robp/dev/github/USD/pxr/base/work/detachedTask.h:15, from /home/robp/dev/github/USD/pxr/base/work/detachedTask.cpp:9: /usr/include/oneapi/tbb/task_group.h:621:5: note: candidate: ‘tbb::detail::d1::task_group::task_group()’ 621 | task_group() : task_group_base(task_group_context::concurrent_wait) {} | ^ ~~~~~~~~~ /usr/include/oneapi/tbb/task_group.h:621:5: note: candidate expects 0 arguments, 1 provided gmake[2]: *** [pxr/base/work/CMakeFiles/work.dir/build.make:97: pxr/base/work/CMakeFiles/work.dir/detachedTask.cpp.o] Error 1 gmake[1]: *** [CMakeFiles/Makefile2:4124: pxr/base/work/CMakeFiles/work.dir/all] Error 2 ``` You can see how `task_group.h` is being picked up from `/usr/include` and not `/home/robp/dev/github/_usd`. This is all using the 25.05rc1 tag, but perhaps this has been the case for longer. ---
**Author:** ![robp\_sidefx](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.aousd.org/robp_sidefx/32/327_2.png) [@robp\_sidefx](https://forum.aousd.org/u/robp_sidefx)\ **Post date:** [April 22, 2025, 9:05pm UTC](https://forum.aousd.org/t/tbb-issues-when-building-both-via-build-usd-py-and-manually/2392/2 "2025-04-22T21:05:48Z")
I reverted to 25.02 and it looks like it’s properly picking up the local TBB - at least based on warnings like this: ```auto [3862/4560] Building CXX object pxr/usd/usdMtlx/CMakeFiles/usdMtlx.dir/fileFormat.cpp.o In file included from /home/robp/dev/github/USD/pxr/base/work/dispatcher.h:26, from /home/robp/dev/github/USD/pxr/usd/sdf/layer.h:29, from /home/robp/dev/github/USD/pxr/usd/pcp/types.h:13, from /home/robp/dev/github/USD/pxr/usd/pcp/node.h:12, from /home/robp/dev/github/USD/pxr/usd/usd/editTarget.h:14, from /home/robp/dev/github/USD/pxr/usd/usd/stage.h:15, from /home/robp/dev/github/USD/pxr/usd/usdMtlx/fileFormat.cpp:11: /home/robp/dev/github/_usd/include/tbb/task.h:21:139: note: ‘#pragma message: TBB Warning: tbb/task.h is deprecated. For details, please see Deprecated Features appendix in the TBB reference manual.’ 21 | #pragma message("TBB Warning: tbb/task.h is deprecated. For details, please see Deprecated Features appendix in the TBB reference manual.") ``` ---
**Author:** ![robp\_sidefx](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.aousd.org/robp_sidefx/32/327_2.png) [@robp\_sidefx](https://forum.aousd.org/u/robp_sidefx)\ **Post date:** [April 23, 2025, 9:59am UTC](https://forum.aousd.org/t/tbb-issues-when-building-both-via-build-usd-py-and-manually/2392/3 "2025-04-23T09:59:29Z")
Okay, I managed to find the cause and logged it as a Github issue - [build\_usd.py favours system TBB over local one · Issue #3610 · PixarAnimationStudios/OpenUSD · GitHub](https://github.com/PixarAnimationStudios/OpenUSD/issues/3610)