On Saturday 21 April 2001 10:02 pm, Matthew Schalit wrote:
> The only other thing I noticed was this section in libltdl/configure:
> ---------------------------------------------------------------------------
> echo "$as_me:7795: checking whether deplibs are loaded by dlopen" >&5
> echo $ECHO_N "checking whether deplibs are loaded by dlopen... $ECHO_C" >&6
> if test "${libltdl_cv_sys_dlopen_deplibs+set}" = set; then
> echo $ECHO_N "(cached) $ECHO_C" >&6
> else
> # PORTME does your system automatically load deplibs for dlopen()?
> libltdl_cv_sys_dlopen_deplibs=unknown
> case "$host_os" in
> linux*)
> libltdl_cv_sys_dlopen_deplibs=yes
> ;;
> netbsd*)
> libltdl_cv_sys_dlopen_deplibs=yes
> ;;
> solaris*)
> libltdl_cv_sys_dlopen_deplibs=yes
> ;;
> esac
>
> fi
> ---------------------------------------------------------------------------
>
>
> I noticed that I got an unknown from this. I don't understand what it's
> checking for, so I don't know how to ask about it or fix it.
Setting this variable to yes tells libltdl that if a dlopened library depends
an another unloaded library that the OS takes care of loading the deplib too.
For instance, if I use libltdl to load libgtk.so into my app, will the OS
also load libgdk, libglib, libX11 etc for me?
If the variable is not set to yes, libltdl will dlopen() those libraries for
me (and recursively any of their deplibs) before trying to perform the dlopen
actually asked for. Needless to say this slows down dlopening a lot,
especially when it is not needed.
There is some discussion obout this issue about 6 weeks ago in the mail
archives.
Cheers,
Gary.
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