In the provisioning script 'install-ffmpeg-macos.sh', we have a variable
'prefix' controlling where to install the finalized library. The value
of this prefix is sometimes hardcoded into some of the temporary build
directories, making the script break if we actually modify the 'prefix'
variable. This means we currently cannot easily change the output directory.
This patch modifies 'install-ffmpeg-macos.sh' so that the 'prefix' is
applied consistently throughout the script, allowing us to change
the output directory in the future.
Pick-to: 6.9 6.8
Change-Id: Id0b1bb23513b7bccf02f0c4073e4177f651792dd
Reviewed-by: Artem Dyomin <artem.dyomin@qt.io>
03d15483a1