gettext-lib does not build on IRIX

Hi,

I just tried to build a package on IRIX 6 (mipspro compiler) and in order
to do that gettext-lib and -tools had to be rebuilt.

The 'configure' program for gettext-lib could not determine the correct
way to call the C++ prepocessor:

  ...
  checking for mips-sgi-irix6.5-g++... CC
  checking whether we are using the GNU C++ compiler... no
  checking whether CC accepts -g... yes
  checking dependency style of CC... none
  checking how to run the C++ preprocessor... CC
  configure: error: C++ preprocessor "CC" fails sanity check
  See `config.log' for more details.

If I remove a line from mk/compiler.mk

  ALL_ENV+=              CXXCPP=${CPP:Q} # to make some Autoconf scripts happy

the 'configure' script decides to use "CC -E", which works.

Why is CPP set to 'CC' in the first place in share/mk/sys.mk for IRIX?
As far as I know the '-E' switch is needed for cc and CC to call the
preprocessor.

How did this kind of failure survive the bulk builds on IRIX since May,
when the line was added to compiler.mk?

ciao
     Klaus