Hi Marek, On Fri, 5 Mar 2021 at 08:37, Marek Behun <marek.be...@nic.cz> wrote: > > On Fri, 5 Mar 2021 11:00:45 +0800 > Bin Meng <bmeng...@gmail.com> wrote: > > > On Wed, Mar 3, 2021 at 12:13 PM Marek Behún <marek.be...@nic.cz> wrote: > > > > > > When building with LTO, the system libc's `errno` variable used in > > > arch/sandbox/cpu/os.c conflicts with U-Boot's `errno` (defined in > > > lib/errno.c) with the following error: > > > .../ld: errno@@GLIBC_PRIVATE: TLS definition in /lib64/libc.so.6 > > > section .tbss mismatches non-TLS reference in > > > /tmp/u-boot.EQlEXz.ltrans0.ltrans.o > > > > Do you know if this is the expected behavior when enabling LTO on the > > compiler? > > I don't, but this is a bug anyway. The symbol clashes with the symbol > from glibc. Does somebody know whether the usage of this symbol in os.c > does really use glibc's version or U-Boot's one?
It is intended to use glibc's version. In fact I don't think U-Boot should have an errno. We return errors in each case, as does Linux. Regards, Simon
