IIRC, when using distcc you must make sure that the Toolchain is ABI-perfect identified by its path.

So:

/opt/ourcompany/dev/bin/cc

absolutely *needs* to be the same on all machines involved or you risk very hard to spot issues.

For that reason, either use the absolute same distribution for everyone (and then run /use/bin/cc but watch out for alternatives!) or roll-out your own toolstack but make sure to put its version in the path.