Hi ChrisW67,

I installed jpeg-8b in this directory:
/home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/jpeg-8blib

[root@ivan jpeg-8blib]# ls
bin include lib share

Then I created a new *.conf file (jpeg8b.conf) in ld.so.conf.d directory:
[ivan@ivan ld.so.conf.d]$ pwd
/etc/ld.so.conf.d
[ivan@ivan ld.so.conf.d]$ ls -alth
total 56K
drwxr-xr-x. 133 root root 8.0K Dec 8 00:58 ..
drwxr-xr-x. 2 root root 4.0K Dec 8 00:07 .
-rw-r--r-- 1 root root 74 Dec 8 00:07 jpeg8b.conf
-rw-r--r-- 1 root root 15 Nov 1 21:31 mysql-i386.conf
-rw-r--r-- 1 root root 25 Oct 27 11:08 xulrunner-32.conf
-r--r--r-- 1 root root 63 Oct 18 23:39 kernel-2.6.34.7-61.fc13.i686.PAE.conf
-r--r--r-- 1 root root 63 Sep 14 22:32 kernel-2.6.34.7-56.fc13.i686.PAE.conf
-r--r--r-- 1 root root 63 Sep 5 12:49 kernel-2.6.34.6-54.fc13.i686.PAE.conf
-rw-r--r-- 1 root root 15 Jul 29 08:10 opencv.conf
-rw-r--r--. 1 root root 20 Dec 22 2009 qt-i386.conf
[ivan@ivan ld.so.conf.d]$ cat jpeg8b.conf
/home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/jpeg-8blib/lib

After that I configured my Qt like this:

./configure -prefix /home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/Trolltech/Qt-4.7.1-ljpeg -opensource -I/home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/jpeg-8blib/include -L/home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/jpeg-8blib/lib -ljpeg

At the moment of type gmake, this error appears:
gmake[1]: Entering directory `/home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/QtInstallers/qt-everywhere-opensource-src-4.7.1/src/corelib'
/home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/QtInstallers/qt-everywhere-opensource-src-4.7.1/bin/moc -DQT_SHARED -DQT_BUILD_CORE_LIB -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DQT_USE_FAST_OPERATOR_PLUS -DQT_USE_FAST_CONCATENATION -DELF_INTERPRETER=\"/lib/ld-linux.so.2\" -DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_HAVE_SSE3 -DQT_HAVE_SSSE3 -DQT_HAVE_SSE4_1 -DQT_HAVE_SSE4_2 -DQT_HAVE_AVX -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I../../mkspecs/linux-g++ -I. -I../../include -I../../include/QtCore -I.rcc/release-shared -Iglobal -I../3rdparty/harfbuzz/src -I../3rdparty/md5 -I../3rdparty/md4 -I.moc/release-shared animation/qabstractanimation.h -o .moc/release-shared/moc_qabstractanimation.cpp
/home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/QtInstallers/qt-everywhere-opensource-src-4.7.1/bin/moc: error while loading shared libraries: libjpeg.so.8: cannot open shared object file: No such file or directory
gmake[1]: *** [.moc/release-shared/moc_qabstractanimation.cpp] Error 127
gmake[1]: Leaving directory `/home/ivan/WinXP/Ivan_Maldonado/PeekDocuments/VideoProject/QtInstallers/qt-everywhere-opensource-src-4.7.1/src/corelib'
gmake: *** [sub-corelib-make_default-ordered] Error 2

Do you have any idea?

Regards and thanks in advance