[Bug bootstrap/128228] [17 Regression] attribs.cc:2479:33: error: 'strtoull' was not declared in this scope

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128228

--- Comment #7 from Sam James <sjames at gcc dot gnu.org> ---
We were resisting simplifying libiberty for now (I have patches for it) because
it is shared with other projects.

Instead, we should probably always define HAVE_LONG_LONG in gcc/configure.ac at
least for now.