automake looks for /opt/procursus/bin/perl instead of $(prefix)/usr/bin/perl on iphoneos

[WhitetailAni]

Pretty much as described. Installing automake from procursus and attempting to use it will fail as the hashbang is set to /opt/procursus/bin/perl. Tested on iOS 16.7.4 (rootless palera1n) and iOS 15.4.1 (rootful palera1n), was the case on both systems.