Re: [PATCH 1/3] Ignore undefined symbols for -mtls-dialect=gnu2

["H.J. Lu" <hjl.tools@gmail.com>]

On Thu, Feb 29, 2024 at 11:46 AM Adhemerval Zanella
<adhemerval.zanella@linaro.org> wrote:
>
> So it is not fail for arm config that defaults to -mtp=soft (which
> issues a call to __aeabi_read_tp).
> ---
>  configure    | 2 +-
>  configure.ac | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/configure b/configure
> index 59ff1e415d..ab8a10ed92 100755
> --- a/configure
> +++ b/configure
> @@ -7020,7 +7020,7 @@ void foo (void)
>  }
>  EOF
>  if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=gnu2 -nostdlib -nostartfiles
> -                  conftest.c -o conftest 1>&5'
> +                  -Wl,--unresolved-symbols=ignore-all conftest.c -o conftest 1>&5'
>    { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
>    (eval $ac_try) 2>&5
>    ac_status=$?
> diff --git a/configure.ac b/configure.ac
> index 65799e5685..4bb9aeef95 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -1297,7 +1297,7 @@ void foo (void)
>  }
>  EOF
>  if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=gnu2 -nostdlib -nostartfiles
> -                  conftest.c -o conftest 1>&AS_MESSAGE_LOG_FD])
> +                  -Wl,--unresolved-symbols=ignore-all conftest.c -o conftest 1>&AS_MESSAGE_LOG_FD])
>  then

Can we use -shared instead?

>    libc_cv_mtls_dialect_gnu2=yes
>  else
> --
> 2.34.1
>


-- 
H.J.