Re: ld cannot find X11 libs

[EJS <ejshoor at yahoo dot com>]

--- Khem Raj <khem@mvista.com> wrote:

> EJS wrote:
> > Hi all,
> >
> > I am not sure that this is a cross compiling
> issue,
> > but if it isn't hopefully someone can point me in
> the
> > right direction.
> >
> > I have an application that I am trying to cross
> > compile, source: i686-cygwin
> > target:i686-unknown-linux.
> > BINUTILS_DIR=binutils-2.15
> > GCC_DIR=gcc-3.4.4
> > GLIBC_DIR=glibc-2.3.5
> > LINUX_DIR=linux-2.6.8
> >
>
LINUX_SANITIZED_HEADER_DIR=linux-libc-headers-2.6.11.
> > GLIBCTHREADS_FILENAME=glibc-linuxthreads-2.3.5
> >
> > The problem that I am having is that ld does not
> seem
> > to find some of the X11 libs that it should.
> > When I execute this:
> > g++  -o mythbrowser main.o webpage.o tabview.o
> > moc_webpage.o moc_tabview.o  
> -L/usr/lib/qt-3.3/lib
> >
>
-L/opt/crosstool/gcc-3.4.4-glibc-2.3.5/i686-unknown-linux-gnu/i686-unknown-linux-gnu/usr/X11R6/lib
> >
>
-L/opt/crosstool/gcc-3.4.4-glibc-2.3.5/i686-unknown-linux-gnu/i686-unknown-linux-gnu/usr/lib
> > -lmyth-0.18.1 -L/opt/kde3/lib -lkhtml -lqt-mt
> -lXext
> > -lX11 -lm
> >
> > I get a bunch of warnings that look like this:
> >
>
/opt/crosstool/gcc-3.4.4-glibc-2.3.5/i686-unknown-linux-gnu/lib/gcc/i686-unknown-linux-gnu/3.4.4/../../../../i686-unknown-linux-gnu/bin/ld:
> > warning: libXrender.so.1, needed by
> >
>
/opt/crosstool/gcc-3.4.4-glibc-2.3.5/i686-unknown-linux-gnu/i686-unknown-linux-gnu/usr/lib/libmyth-0.18.1.so,
> > not found (try using -rpath or -rpath-link)
> >
> > Which eventually turn into errors.
> > The problem is that libXrender.so.1 definitely
> exists
> > in one of the library paths specified: 
> >
> > ls -l
> >
>
/opt/crosstool/gcc-3.4.4-glibc-2.3.5/i686-unknown-linux-gnu/i686-unknown-linux-gnu/usr/X11R6/lib/libXrender*
> > -rw-r--r--  1 mythtv mkgroup-l-d 38144 Jan 29
> 21:54
> > libXrender.a
> > lrwxrwxrwx  1 mythtv mkgroup-l-d    19 Jan 29
> 21:54
> > libXrender.so -> libXrender.so.1.2.2
> > lrwxrwxrwx  1 mythtv mkgroup-l-d    19 Jan 29
> 21:54
> > libXrender.so.1 -> libXrender.so.1.2.2
> > -rwxr-xr-x  1 mythtv mkgroup-l-d 29636 Jan 29
> 21:54
> > libXrender.so.1.2.2
> >
> > I tried addding -rpath and/or -rpath-link to the
> > compile but the results were the same (ie the lib
> is
> > not found).
> >
> > I was able to resolve the problem for one library
> by
> > adding it the compile string explictly e.g.:
> > g++  -o mythbrowser main.o webpage.o tabview.o
> > moc_webpage.o moc_tabview.o  
> -L/usr/lib/qt-3.3/lib
> >
>
-L/opt/crosstool/gcc-3.4.4-glibc-2.3.5/i686-unknown-linux-gnu/i686-unknown-linux-gnu/usr/X11R6/lib
> >
>
-L/opt/crosstool/gcc-3.4.4-glibc-2.3.5/i686-unknown-linux-gnu/i686-unknown-linux-gnu/usr/lib
> > -lmyth-0.18.1 -L/opt/kde3/lib -lkhtml -lqt-mt
> -lXext
> > -lX11 -lm -lXrender
> >
> > but this is really not a workable strategy because
> > there are so many X11 libs.
> >
> > Any ideas.
> >
> > Thanks,
> > J
> >
> >
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> >   
> I think -rpath <DIR> is best way to go it should
> work if it does not
> alternatively you can use LD_RUN_PATH and
> LD_LIBRARY_PATH environment 
> variables.
> btw. what does the DT_NEEDED entries show for
> libmyth-0.18.1.so
> 
> -- 
> Khem Raj <khem@mvista.com>
> MontaVista Software, Inc.
> www.mvista.com
> 
Khem,
 
Thanks for your response. I should have mentioned that
I had already tried setting LD_LIBRARY_PATH,
LD_RUN_PATH, -rpath, and -rpath-link. None of these
things had any different affect. ld still cannot seem
to find the libraries. I dont know exactly the right
way to get the DT_NEEDED libs for the file (especially
as I dont have a cross-compiled ldd). 
I ran:
$ objdump.exe -x libmyth-0.18.1.so |grep NEEDED

  NEEDED      liblirc_client.so.0
  NEEDED      libfreetype.so.6
  NEEDED      libmp3lame.so.0
  NEEDED      libasound.so.2
  NEEDED      libraw1394.so.8
  NEEDED      libiec61883.so.0
  NEEDED      libavc1394.so.0
  NEEDED      libXinerama.so.1
  NEEDED      libXv.so.1
  NEEDED      libXxf86vm.so.1
  NEEDED      libqt-mt.so.3
  NEEDED      libXext.so.6
  NEEDED      libX11.so.6
  NEEDED      libXrender.so.1
  NEEDED      libXrandr.so.2
  NEEDED      libXcursor.so.1
  NEEDED      libXft.so.2
  NEEDED      libSM.so.6
  NEEDED      libICE.so.6
  NEEDED      libpthread.so.0
  NEEDED      libstdc++.so.6
  NEEDED      libm.so.6
  NEEDED      libgcc_s.so.1
  NEEDED      libc.so.6

I assume this is what you were looking for.
Thanks again,
J


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