GDL and Conda

[jaymurthy]

GDL crashed after I installed Conda and upgraded all the Homebrew files. I used Claude to fix it and I've attached the heavily edited Claude fix below.

Root cause

If GDL was ever cmake/built from source while Anaconda/conda was on
PATH, the build can locate HDF5 via Anaconda instead of Homebrew, baking
/opt/anaconda3/lib into the GDL binary's LC_RPATH search list — often
ahead of the correct Homebrew HDF5 path.

Fix

install_name_tool -delete_rpath /opt/anaconda3/lib /path/to/gdl
install_name_tool -add_rpath /opt/anaconda3/lib /path/to/gdl

Apple Silicon note: modifying a Mach-O binary with install_name_tool
invalidates its code signature, and macOS on M-series Macs refuses to run
an improperly signed binary. Re-sign it (ad-hoc, no certificate needed)
immediately after patching:

codesign --force -s - /path/to/gdl

[GillesDuvert]

Thanks, the Conda problem was already reported back in #780 and mentioned in the wiki (Known Issues) a long time ago, but solution was only a warning in CmakeLists.txt, not a complete fix as yours. (but is the Conda problem only on OSX?)