ldconfig

[ahso4271]

Hi
I try to compile a 32bit app on 64bit 10.04.
Now that's the error I get:
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g++ -Lmedia/openSuse-/usr/lib/ -m32 -shared -o"lin.xpl" ./main.o -lSDL -lSDL_mixer -lalut -lSDL_image -lGL -lGLU
/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/4.4.3/../../../libSDL.so when searching for -lSDL
/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/4.4.3/../../../libSDL.a when searching for -lSDL
/usr/bin/ld: skipping incompatible /usr/lib/libSDL.so when searching for -lSDL
/usr/bin/ld: skipping incompatible /usr/lib/libSDL.a when searching for -lSDL
/usr/bin/ld: cannot find -lSDL
collect2: ld returned 1 exit status
make: *** [lin.xpl] Fehler 1
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Can I copy the libs from suse to f.ex. /usr/libsSuse32 and then simply run ldconfig from that directory? What's the syntax for ldconfig?
Thanks

[tommcd]

I try to compile a 32bit app on 64bit 10.04.
First, what package are you trying to compile? And why do you need to compile it from source code? Is the package not available in the Ubuntu repos?


Can I copy the libs from suse to f.ex. /usr/libsSuse32 and then simply run ldconfig from that directory? What's the syntax for ldconfig?

Why would you copy libs from Suse???
Is the package you are trying to compile from the Suse repos or something? Please provide a link to exactly what you are trying to compile.

To install 32 bit apps on 64 bit Ubuntu, install the ia32-libs package from the Ubuntu repos:
http://packages.ubuntu.com/lucid/ia32-libs
https://help.ubuntu.com/community/32bit_and_64bit#How%20to%20make%2032-bit%20application%20work%20on%20a%2064-bit%20Operating%20System
Then install the desired 32 bit app from the Ubuntu repos.
If the package is not available in the Ubuntu repos, which is unlikely, then install the build-essential package:
http://packages.ubuntu.com/lucid/build-essential
and then compile the app from source code instead of trying to make a Suse RPM package work on an Ubuntu .deb system.

[ahso4271]

Hi
i've selected the 32libs at ubuntu install. Now I'm trying to crosscompile with Eclipse for 32bit/Windows/Intel Mac
Any help with my error? Basically I need to let ld know about f.ex. a different SDL lib with same name but different location. For now it only finds the installed 64bit version.
Many thanks
Michael

[tommcd]

i've selected the 32libs at ubuntu install. Now I'm trying to crosscompile with Eclipse for 32bit/Windows/Intel Mac
Any help with my error? Basically I need to let ld know about f.ex. a different SDL lib with same name but different location. For now it only finds the installed 64bit version.

I am not familiar with eclipse. However, I found these 2 references for eclipse in the Ubuntu wiki:
https://help.ubuntu.com/community/EclipseWebTools
https://help.ubuntu.com/community/EclipseIDE
The second link covers installing eclipse from source code as well as some troubleshooting.

[ahso4271]

ok but Eclipse install is in fact trivial.
Now could I add a directory with libs of the same name as the default 64bit installed alike below? (sdl etc.) As the toolchains are present for Mac & win as well i suppose it should be possible somehow also to add mac & win libs.
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Add the path "/usr/lib/firefox" to the file "/etc/ld.so.conf" and execute "sudo ldconfig" once.
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Thanks