[bug #63686] implement a flag to promote make warnings to fatal errors

[Thomas Güttler]

Follow-up Comment #2, bug #63686 (project make):

[comment #0 original submission:]
> GCC has a -Werror option causing warnings to be promoted to fatal errors
which I (and my organization) find very useful. As a matter of policy we
always build with -Werror on and while this, obviously, is painful to start
with it leads to a much calmer working environment once cruising altitude is
reached. We find new issues much quicker since new warnings aren't
interspersed with hundreds of pre-existing ones.


Same here. Every automated way to get better quality help us in the long run.

It would help us if we could promote warnings to fatal errors.

For example:

> Makefile:118: Warnung: undefinierte Variable „FOO“




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