Re: [RFC PATCH u-boot 02/12] sandbox: errno: avoid conflict with libc's errno

On Wed, Mar 3, 2021 at 12:13 PM Marek Behún marek.behun@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?

To avoid this conflict use different asm label for this variable when CONFIG_SANDBOX is enabled.

Signed-off-by: Marek Behún marek.behun@nic.cz

include/errno.h | 8 +++++++- lib/errno.c | 4 +++- 2 files changed, 10 insertions(+), 2 deletions(-)

Regards, Bin