Create a build directory in the source, then

../configure --prefix=/usr --disable-dbus --disable-hal --disable-crashreporter --enable-strip --enable-application=browser --disable-libnotify --enable-optimize=-Os --disable-necko-wifi --with-system-libvpx


****To build with .mozconfig instead:

Copy .mozconfig to root of build.

mkdir BUILD
make -j4 -f client.mk build
make -C BUILD/suite/installer



Here's what needs to be in your .mozconfig file:

ac_add_options --enable-application=suite #(or browser for firefox)

ac_add_options --prefix=/usr
ac_add_options --libdir=/usr/lib64
#ac_add_options --with-system-jpeg
#ac_add_options --with-system-png
ac_add_options --with-system-zlib
ac_add_options --with-system-bz2
ac_add_options --with-system-libvpx
#ac_add_options --enable-system-sqlite
#ac_add_options --enable-default-toolkit=cairo-qt
ac_add_options --enable-gio
ac_add_options --enable-strip
ac_add_options --enable-optimize=-Os
ac_add_options --disable-necko-wifi
ac_add_options --disable-dbus
ac_add_options --disable-libnotify
ac_add_options --disable-gnomevfs
ac_add_options --disable-crashreporter
ac_add_options --disable-updater
ac_add_options --disable-tests
ac_add_options --disable-installer
mk_add_options MOZ_OBJDIR=@TOPSRCDIR@/BUILD
export MOZILLA_OFFICIAL=1
#export QT4DIR=/opt/qt4
#export QTDIR=/opt/qt4