We will need to setup target specific flags for the compiler and linkers:

export BUILD32="-m32"
export BUILD64="-m64"

You will need to set your host target triplet for 32 bit:

export CLFS_TARGET32="i686-pc-linux-gnu"

To prevent errors when you come back to your build, we will export these variables to prevent any build issues in the future:

echo export BUILD32=\""${BUILD32}\"" >> ~/.bash_profile
echo export BUILD64=\""${BUILD64}\"" >> ~/.bash_profile
echo export CLFS_TARGET32=\""${CLFS_TARGET32}\"" >> ~/.bash_profile