gac(1) on Linux
The text 8c3245592760, as Debian 9 (Stretch) shipped it.
The GAP Compiler
Flags it lists
-
-C -
-P -
-c -
-d -
-ffast-int-arith -
-ffast-list-funcs -
-ffast-plain-lists -
-fno-check-types -
-o -
-p -
-r