On Tue, 9 Sept 2025 at 14:00, Shiva Subramanian wrote: > > For some reason, configure/make assumes that the section of regex.c in libiberty that uses alloca needs to be used on Nonstop. Ah alloca, not "alloc". Yes, it looks like that's used by default. > Not sure if this inbox accepts attachments, but I've attached the compiler listing where the errors occur. I've tried to bypass this error by setting REGEX_MALLOC in CFLAGS & CPPFLAGS during configure but I've failed as the error still occurs, not sure if there's a better way to do this? I think CFLAGS is not used, try CFLAGS_FOR_BUILD=-DREGEX_MALLOC instead, that might work.