1) Error message : BSP_PCI_IRQ0 undeclared (first use in this function)

Fix : In include/bsp.h, one should add back :
#define BSP_PCI_IRQ0 BSP_PCI_IRQ_LOWEST_OFFSET

P.S. : At one point, it was suggested to use a different
name in the O.S. However, this introduced problems for a
clean build.

2) Because BSP_PCI_IRQ0 was undeclared, the build system was
clobbered. One should remove the old build and do a clean build
as the following :

rm -rf build
mkdir build
cd build
../rtems-4.6.x/configure -target=ppc-rtems -prefix=/opt/rtems1 --enable-cxx
--enable-rdbg --disable-tests --enable-maintainer-mode --enable-networking
--enable-posix --enable-itron
gmake RTEMS_BSP=mvme5500
gmake RTEMS_BSP=mvme5500 install

3) What is the tested platform ?
 
Answer : The operating system is rtems-4.6.0 with important patches.

The toolchain is :
  binutils-2.13.2.1
  gcc-3.2.2
  newlib-1.11.0
  automake-1.7.2  (from GNU site)
  autoconf-2.57   (from GNU site)

4) How can I build the BSP with cexp ?

Answer : Please reference http://www.slac.stanford.edu/~strauman/rtems/

5) "Trying to synchronize NTP...FAILED" appeared after the BSP was booted,
but before the system script st.sys is being loaded :

Answer : One should specify a NTP server in the dhcpd.conf or bootptab file.