Shared libraries and linking.,
 

Is there a way to specify where a program looks for its shared libraries ?

For example, I have created a program using the QT library under Linux. It compiles fine with no errors and appears to link to libqt.so.2 but I can not run this program because my program can't find libqt.so.2

For this example here are the outputs:

./main
ld.so.1: ./main: fatal: libqt.so.2: open failed: No such file or directory
Killed

ldd main
libqt.so.2 => (file not found)
libstdc++.so.2.10.0 => /usr/local/gnu/lib/libstdc++.so.2.10.0
libm.so.1 => /usr/lib/libm.so.1
libc.so.1 => /usr/lib/libc.so.1
libdl.so.1 => /usr/lib/libdl.so.1
/usr/platform/SUNW,Sun-Blade-100/lib/libc_psr.so.1

When I link my program I have tried linking in two ways:

1. With -L$(QTDIR)/lib -lqt
2. With $(QTDIR)/lib/libqt.so.2 (as if it were just another object)

I know the easy solution would be add $(QTDIR)/lib to ld.so.conf but I do not have root access. Is there any way to tell GCC to link in the absolute path to libqt.so.2 (I know this would not be a very portable solution but I don't care right now).

Thanks in advance,

Devin

In your .bashrc or .bash_profile
do
export LD_LIBRARY_PATH=$QTDIR/lib:$LD_LIBRARY_PATH
and see whether that does the trick.

Hope it helps!

Cheers,
Tink

Tinkster,

Thank you! This has fixed the problem.

Devin

Glad I could help!

Cheers,
Tink