10:01 <RolfNoot> Hi, I checked my branch out to another folder, added submodules and now the compiler complains: error: use of undeclared identifier 'stderr'

10:02 <RolfNoot> Looks like stdio and such libraries are missing. Any ideas?

10:29 <PaulFertser> RolfNoot: compiler can't complain about libraries, it's not linking. Probably stderr needs additional #include on that system.

10:39 <RolfNoot> PaulFertser: use of undeclared identifier is actually an error generated by the compiler, such as undeclared (first use in this function) for gcc

10:40 <PaulFertser> RolfNoot: yes, so it means some important header is not included.

10:42 <PaulFertser> stdio.h should be enough https://www.unix.com/man-page/posix/3posix/stderr/

10:43 <RolfNoot> PaulFertser: Yes, I get that. I solved it with including already however I wonder why this happens on the same machine with just a checkout to antoher folder

10:43 <RolfNoot> Maybe it is know.

10:44 <PaulFertser> I can't explain without reproducing.

10:44 <PaulFertser> There must be some other subtle difference.

10:47 <RolfNoot> Probably. I will check for differences, can compare the build output (compiler flags) of the original and the checked out version/