Hi Alex, Alex Potapenko wrote,

Hi,

I'm trying to compile a sourcecode that makes use of sigsetmask() function against uClibc-ng 1.0.6. This symbol is missing from uClibc-ng built with default Buildroot 2015.08 config. Which option should be enabled to have it?

I only found two signal options in the config: UCLIBC_HAS_OBSOLETE_BSD_SIGNAL and UCLIBC_HAS_OBSOLETE_SYSV_SIGNAL. The former was enabled by default, the latter was off, but turning it on doesn't help too.

I see that sigsetmask() is just a wrapper around sigset_set_old_mask, sigprocmask and sigset_get_old_mask, but I don't want to resort to patching the user app sourcecode if possible.

Hmm, that is bad. They got disabled here in 2012: http://git.uclibc.org/uClibc/commit/?id=5aa7aa7fa7ec2a0fe567ac0b2595b46add6f... And they are only internally used by the included RPC implementation.

What user app is using the old BSD signal functions? Musl does not implement them, GNU libc only has stubs.

best regards Waldemar