Trouble running on x86_64 linux

[pedro]

Hello.
I'm running x86_64 linux distro with libraries placed in /usr/lib64 NOT /usr/lib
At compilation of codeblocks I do pointing the following options:
CONFIGURE_FLAGS+="--with-contrib-plugins=all --enable-static \
--enable-source-formatter --enable-autosave \
--enable-class-wizard  --enable-code-completion \
--enable-compiler --enable-debugger --enable-mime-handler \
--enable-open-files-list --enable-projects-importer \
--enable-scripted-wizard  --enable-todo --enable-xpmanifest \
--enable-pch  --prefix=/usr --disable-debug --libdir="/usr/lib64"
The problem is when i start codeblocks it:
Scanning for plugins in /usr/lib/codeblocks/plugins
But the actual place where plugins placed is /usr/lib/codeblocks/plugins  lib64!!! not lib

How can i fix it? Thx in advance.