Allow cross-compilation of Linux arm64 builds on Linux x86_64 build hosts #13
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…osts These changes to run.py allow to build an arm64 WebRTC SDK package on a x86_64 build host under Linux.
This commit fixes the following issue seen on Linux arm64 viewer builds at runtime: "undefined symbol __arm_tpidr2_save" This error is due to unconditional intrinsics optimizations enabling by the build system in third party libraries for Linux arm64, without regard for the target system NEON version. Here, the error comes from an optimisation of libyuv; thankfully, we can force-disable it with: 'libyuv_use_sme=false'. The commmit also adds (untested) cross-compiling support for the 'raspberry-pi-os_armv8' target. Finally, this commit reimplements (and re-enables) the check_target() function in run.py so that it works without ostracizing the build hosts, i.e. not forcing specific Ubuntu distro and version, since we are using a virtual build environment and therefore do not care about the host Linux distro. Note however that I did not allow ARM v6/7 and android targets in check_target since those would require further modifications to run.py (see my comment in check_target); but do we care at all about them for SL viewers ?
|
With these changes implemented, I could cross-compile an ARM64 version of WebRTC SDK m137 (1) and natively compile a working Linux ARM64 viewer (2) using that SDK build. (1) Available here |
|
Am looking at this. Need to straighten out the main 'secondlife' branch first, though. |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
These changes to run.py allow to build an arm64 WebRTC SDK package on a x86_64 build host under Linux.