Monit crashes with sigill on architectures that do not support control-flow enforcement technology (-fcf-protection=full)

Running monit on a system with AMD Geode LX, the programm crashes with an illegal instruction exception.

localhost ~ # gdb monit
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Reading symbols from monit...
(No debugging symbols found in monit)
(gdb) set disassemble-next-line on
(gdb) r
Starting program: /usr/bin/monit
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".

Program received signal SIGILL, Illegal instruction.
0x0040db26 in ?? ()
=> 0x0040db26: f3 0f 1e fb endbr32

The reason is the endbr32 instruction, which is not supported on this CPU (pre PentiumPro). The instruction is added by gcc when compiling using “-fcf-protection=full”.

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