Re: [PATCH] configure: Detect linking style for HP aCC on HP-UX

> From: Michael Osipov <michael.osipov@siemens.com>
> 
> HP aCC does not accept any of the previously tested CC_LD_DYNPATH
> formats, but only its own[1] "-Wl,+b" format. Add it to configure.ac.
> 
> 1. http://nixdoc.net/man-pages/hp-ux/man1/ld_pa.1.html
> 
> Signed-off-by: Michael Osipov <michael.osipov@siemens.com>
> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
> ---
> 
> I took the liberty of slightly amending the commit message.
> 
>   configure.ac | 14 ++++++++++++--
>   1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index be3b55f1cc..a43b476402 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -475,8 +475,18 @@ else
>         if test "$git_cv_ld_rpath" = "yes"; then
>            CC_LD_DYNPATH=-rpath
>         else
> -         CC_LD_DYNPATH=
> -         AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
> +         AC_CACHE_CHECK([if linker supports -Wl,+b,], git_cv_ld_wl_b, [
> +            SAVE_LDFLAGS="${LDFLAGS}"
> +            LDFLAGS="${SAVE_LDFLAGS} -Wl,+b,/"
> +            AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [git_cv_ld_wl_b=yes], [git_cv_ld_wl_b=no])
> +            LDFLAGS="${SAVE_LDFLAGS}"
> +         ])
> +         if test "$git_cv_ld_wl_b" = "yes"; then
> +            CC_LD_DYNPATH=-Wl,+b,
> +          else
> +             CC_LD_DYNPATH=
> +             AC_MSG_WARN([linker does not support runtime path to dynamic libraries])
> +          fi
>         fi
>      fi
>   fi
>