Re: question about AC_LTDL_SYS_DLOPEN_DEPLIBS

[Robert Boehne]

Tim:

Looks good, I'm going to commit this now as it seems that writing a
test is not quite trivial (to me at least ;).

Robert

Tim Mooney wrote:
> 
> In regard to: Re: question about AC_LTDL_SYS_DLOPEN_DEPLIBS, Gary V....:
> 
> >On Monday 16 July 2001  4:10 pm, Robert Boehne wrote:
> >>   Here is the test case, if someone wants to libtoolize it, we
> >> could add it to the macro.
> >
> >Seconded!  I would happily accept a patch to perform the test *instead* of
> >listing values for only hosts triplets that have been researched...
> 
> :-)  For now, what do you think of the updated patch, below?
> 
> Tim
> --
> Tim Mooney                              address@hidden
> Information Technology Services         (701) 231-1076 (Voice)
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> 
> diff -ur libtool-1.4b.orig/ltdl.m4 libtool-1.4b/ltdl.m4
> --- libtool-1.4b.orig/ltdl.m4   Thu Jul  5 18:10:26 2001
> +++ libtool-1.4b/ltdl.m4        Mon Jul 16 16:06:34 2001
> @@ -70,13 +70,57 @@
>  [AC_REQUIRE([AC_CANONICAL_HOST])
>  AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
>         libltdl_cv_sys_dlopen_deplibs, [dnl
> -       # PORTME does your system automatically load deplibs for dlopen()?
> +       # PORTME does your system automatically load deplibs for dlopen()
> +       # or its logical equivalent (e.g. shl_load for HP-UX < 11)
> +       # For now, we just catch OSes we know something about -- in the
> +       # future, we'll try test this programmatically.
>         libltdl_cv_sys_dlopen_deplibs=unknown
>         case "$host_os" in
> +       aix3*|aix4.1.*|aix4.2.*)
> +         # Unknown whether this is true for these versions of AIX, but
> +         # we want this `case' here to explicitly catch those versions.
> +         libltdl_cv_sys_dlopen_deplibs=unknown
> +         ;;
> +       aix4*)
> +         # Unknown whether this is true for aix5, but is true for aix >= 
> 4.3.*
> +         libltdl_cv_sys_dlopen_deplibs=yes
> +         ;;
> +       irix[12345]*|irix6.[01234]*)
> +         # Catch all versions of IRIX before 6.5, and indicate that we don't
> +         # know how it worked for any of those versions.
> +         libltdl_cv_sys_dlopen_deplibs=unknown
> +         ;;
> +       irix*)
> +         # The case above catches anything before 6.5, and it's known that
> +         # at 6.5 and later dlopen does load deplibs.
> +         libltdl_cv_sys_dlopen_deplibs=yes
> +         ;;
>         linux*)
>           libltdl_cv_sys_dlopen_deplibs=yes
>           ;;
>         netbsd*)
> +         libltdl_cv_sys_dlopen_deplibs=yes
> +         ;;
> +       osf[1234]*)
> +         # dlopen did load deplibs (at least at 4.x), but until the 5.x 
> series,
> +         # it did *not* use an RPATH in a shared library to find objects the
> +         # library depends on, so we explictly say `no'.
> +         libltdl_cv_sys_dlopen_deplibs=no
> +         ;;
> +       osf5.0|osf5.0a|osf5.1)
> +         # dlopen *does* load deplibs and with the right loader patch applied
> +         # it even uses RPATH in a shared library to search for shared 
> objects
> +         # that the library depends on, but there's no easy way to know if 
> that
> +         # patch is installed.  Since this is the case, all we can really
> +         # say is unknown -- it depends on the patch being installed.  If
> +         # it is, this changes to `yes'.  Without it, it would be `no'.
> +         libltdl_cv_sys_dlopen_deplibs=unknown
> +         ;;
> +       osf*)
> +         # the two cases above should catch all versions of osf <= 5.1.  Read
> +         # the comments above for what we know about them.
> +         # At > 5.1, deplibs are loaded *and* any RPATH in a shared library
> +         # is used to find them so we can finally say `yes'.
>           libltdl_cv_sys_dlopen_deplibs=yes
>           ;;
>         solaris*)
> --- libtool-1.4b.orig/ChangeLog Mon Jul  9 17:02:09 2001
> +++ libtool-1.4b/ChangeLog      Mon Jul 16 16:10:41 2001
> @@ -0,0 +1,5 @@
> +2001-07-16  Robert Boehne  <address@hidden>, Tim Mooney  <address@hidden>
> +
> +       * ltdl.m4 (AC_LTDL_SYS_DLOPEN_DEPLIBS): add cases and comments for
> +       more platforms, including AIX, Digital/Tru64 UNIX and IRIX.
> +

-- 
Robert Boehne             Software Engineer
Ricardo Software   Chicago Technical Center
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