Fail to load the *.so files in the same directory ?

[zgma1788]

Hi, everyone,

I am a beginner for linux programming. I developped a consolo program "buildmysqldb" by QT, then find out the needed .so files by ldd command, then copy them (the orginnal so files and the symbol link files) together with my program. Now I copy all of them to another ubuntu computer, when I run "buildmysqldb", it is reported "cannot open shared object file"! Why? Evenif I first run "> export PATH=$PATH:/opt/buildmysqldb-0.0.1
> export LD_LIBRARY_PATH=/opt/buildmysqldb-0.0.1:$LD_LIBRARY_PATH", the problem still remains.
Please help me!
The following is the screen shot (by webmin):

> cd /opt/buildmysqldb-0.0.1
> ls
buildmysqldb
day
libc-2.7.so
libcidn-2.7.so
libcidn.so.1
libcom_err.so.2
libcom_err.so.2.1
libcrypto.so.0.9.8
libc.so.6
libdl-2.7.so
libdl.so.2
libexpat.so.1
libexpat.so.1.5.2
libfontconfig.so.1
libfontconfig.so.1.3.0
libfreetype.so.6
libfreetype.so.6.3.16
libgcc_s.so.1
libgcrypt.so.11
libgcrypt.so.11.2.3
libglib-2.0.so.0
libglib-2.0.so.0.1600.6
libgnutls.so.13
libgnutls.so.13.9.1
libgpg-error.so.0
libgpg-error.so.0.3.0
libgssapi_krb5.so.2
libgssapi_krb5.so.2.2
libgthread-2.0.so.0
libgthread-2.0.so.0.1600.6
libk5crypto.so.3
libk5crypto.so.3.1
libkeyutils-1.2.so
libkeyutils.so.1
libkrb5.so.3
libkrb5.so.3.3
libkrb5support.so.0
libkrb5support.so.0.1
liblber-2.4.so.2
liblber-2.4.so.2.0.5
libldap_r-2.4.so.2
libldap_r-2.4.so.2.0.5
libm-2.7.so
libm.so.6
libmysqlclient_r.so.15
libmysqlclient_r.so.15.0.0
libnsl-2.7.so
libnsl.so.1
libpcre.so.3
libpcre.so.3.12.1
libpq.so.5
libpq.so.5.1
libpthread-2.7.so
libpthread.so.0
libQtCore.so.4
libQtCore.so.4.3.4
libQtNetwork.so.4
libQtNetwork.so.4.3.4
libQtSql.so.4
libQtSql.so.4.3.4
libresolv-2.7.so
libresolv.so.2
librt-2.7.so
librt.so.1
libsasl2.so.2
libsasl2.so.2.0.22
libsqlite3.so.0
libsqlite3.so.0.8.6
libsqlite.so.0
libsqlite.so.0.8.6
libssl.so.0.9.8
libstdc++.so.6
libstdc++.so.6.0.9
libtasn1.so.3
libtasn1.so.3.0.12
libz.so.1
libz.so.1.2.3.3
Uninstall buildmysqldb.desktop
> export PATH=$PATH:/opt/buildmysqldb-0.0.1
> export LD_LIBRARY_PATH=/opt/buildmysqldb-0.0.1:$LD_LIBRARY_PATH
> ./buildmysqldb
./buildmysqldb: error while loading shared libraries: libQtSql.so.4: cannot open shared object file: No such file or directory
> LD_LIBRARY_PATH=/opt/buildmysqldb-0.0.1:$LD_LIBRARY_PATH
> ./buildmysqldb
./buildmysqldb: error while loading shared libraries: libQtSql.so.4: cannot open shared object file: No such file or directory


Thanks in advence!

[iponeverything]

try LD_PATH

[zgma1788]

I tried, still failed.
> export LD_PATH=/opt/buildmysqldb-0.0.1:$LD_PATH
> ./buildmysqldb
./buildmysqldb: error while loading shared libraries: libQtSql.so.4: cannot open shared object file: No such file or directory
Thanks anyway!

[zgma1788]

I found a way out:

Edit /etc/ld.so.conf，add /opt/buildmysqldb-0.0.1，
run ldconfig, then run ./buildmysqldb, it works!