On Tue, 16 Apr 2024, 04:17 Alexandre Oliva, <ol...@adacore.com> wrote:
>
> VxWorks fails to load kernel-mode modules with weak undefined symbols.
> In RTP mode modules, that undergo final linking, weak undefined
> symbols are not a problem.
>
> This patch adds kernel-mode VxWorks multilibs to the set of targets
> that don't support weak undefined symbols without special flags, in
> which tzdb's zoneinfo_dir_override is given a weak definition.
>
> Regstrapped on x86_64-linux-gnu. Also tested with gcc-13 on arm-,
> aarch64-, x86- and x86_64-vxworks7r2. Ok to install?
>
OK, thanks.
>
> for libstdc++-v3/ChangeLog
>
> * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Define
> on VxWorks non-RTP.
> ---
> libstdc++-v3/src/c++20/tzdb.cc | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/libstdc++-v3/src/c++20/tzdb.cc
> b/libstdc++-v3/src/c++20/tzdb.cc
> index 890a4c53e2d44..639d1c440ba16 100644
> --- a/libstdc++-v3/src/c++20/tzdb.cc
> +++ b/libstdc++-v3/src/c++20/tzdb.cc
> @@ -70,8 +70,9 @@ namespace __gnu_cxx
> #else
> [[gnu::weak]] const char* zoneinfo_dir_override();
>
> -#if defined(__APPLE__) || defined(__hpux__)
> - // Need a weak definition for Mach-O.
> +#if defined(__APPLE__) || defined(__hpux__) \
> + || (defined(__VXWORKS__) && !defined(__RTP__))
> + // Need a weak definition for Mach-O et al.
> [[gnu::weak]] const char* zoneinfo_dir_override()
> {
> #ifdef _GLIBCXX_ZONEINFO_DIR
>
> --
> Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
> Free Software Activist GNU Toolchain Engineer
> More tolerance and less prejudice are key for inclusion and diversity
> Excluding neuro-others for not behaving ""normal"" is *not* inclusive
>
