Setting up development env on Mac OS X

General Discussion
1

I am planning to begin working on posted issues for Panda3D, but first need to set up a development and testing environment. I have been making steady progress on this. I decided to do this on a Big Sur system and have installed Xcode 12. I have forked the panda3d code from github and downloaded the 3rd party tools. After a bit of noodling, I was able to get the compiler going, but hit a snag. Here is the command I used:

python3 makepanda/makepanda.py --everything --verbose --no-python

This successfully went through a significant amount of the process, but then I hit this error:

Writing built/etc/Confauto.prc
install_name_tool -id @loader_path/…/lib/libfmodexL.dylib built/lib/libfmodexL.dylib
otool -L built/lib/libfmodexL.dylib | grep .dylib > built/tmp/otool-libs.txt
install_name_tool -id @loader_path/…/lib/libfmodex.dylib built/lib/libfmodex.dylib
otool -L built/lib/libfmodex.dylib | grep .dylib > built/tmp/otool-libs.txt
install_name_tool -id @loader_path/…/lib/libopencv_highgui.2.4.3.dylib built/lib/libopencv_highgui.2.4.3.dylib
error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/install_name_tool: in swap_object_headers(): malformed load command 0 (cmdsize not a multiple of 4)
fatal error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/install_name_tool: internal error: swap_object_headers() failed
Thoughts?

2

Hi, this is a recent issue on Big Sur, please see this bug report for a workaround:

3

Thanks rdb. Looks like it’s off and running.

4

The build finished with just one issue. Mac security didn’t want to give permission to /Cg.framework. This is easily solved by going to System Preferences:Security and Privacy. There should be a notification there that Cg.framework was trying to launch with an option to always allow. You will also get a separate dialog notifying you that MacOS blocked the execution of Cg.framework. Select cancel in this dialog. Restart the build by reissuing the command:
python3 makepanda/makepanda.py --everything --verbose --no-python --no-opencv --no-fmod --installer
That worked for me. I took pretty careful notes and can write up directions for anyone else interested in using MacOS as their dev environment.
Thanks rdb for all your help

5

Glad that you managed to produce a build. Please note you can add something like --threads 4 (or however many CPU cores you want to devote to this) to make the build go faster.