ninja execution error

[WhyICanNotDo]

Sorry to bother you, I'm having an error executing "ninja", I've tried many times to fix this, but to no avail. The following is the error message:

"nitsuba3/ext/drjit/include/drjit/loop.h:82:32: error: 'jit_var_dec_ref_ext’ was not declared in this scope，and no declarations were found by argunent-dependent lookup at the point of instantiation [-fpernissive] ... ninja: build stopped: subcomnand failed."

[merlinND]

Hello @WhyICanNotDo,

It is difficult to help with the given information, please specify the OS and compiler that you have tried using.
In the Getting Started section of the README, you can see which compiler was explicitly tested.

Although this branch is somewhat outdated compared to the latest version of Mitsuba 3, the documentation is still applicable: https://mitsuba.readthedocs.io/en/stable/src/developer_guide/compiling.html

[WhyICanNotDo]

Sorry for not replying to your message in time.

Ubuntu 20.04 & CUDA12.0 & 3.30GHz Intel i9-7900K CPU & NVIDIA RTX-3090Ti GPU & Clang++ 10.0.0 & Python3.8.17

In fact, I failed to execute "git clone --recursive https://github.com/mitsuba-renderer/mitsuba3 --branch unbiased-inverse-volume-rendering" successfully. Therefore, I directly downloaded the unbiased-inverse-volume-rendering branch and its sub-branches. Then execute the command:
cd mitsuba3
mkdir build && cd build
cmake -GNinja ..
ninja

[merlinND]

Could you try with a more recent version of Clang? As specified in the README, this code was tested with 12.0.0.