autoconf: AC_PROG_CXX cygwin vs Solaris

[Roland Roberts]

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I'm trying to automatically detect the "correct" C++ compiler for our
project.  We are using Oracle and it's OCCI lib which requires that I
use the "vendor" C++ compiler.  For Solaris, it is named CC (yep,
uppercase).  Some of our developers are using cygwin and are not
interested in the Oracle pieces, and do their testing with g++.

The problem is that if I use

    AC_PROG_CXX([CC c++ g++])

Then on cygwin I pick up /usr/bin/CC which is really /usr/bin/cc (gcc)
since things are not being handled as case-sensitive.

But then at link time, I am getting errors, like this one:

   nnls.o(.text+0xa93): In function 
`_Z41__static_initialization_and_destruction_0ii':
    /usr/include/c++/3.3.3/iostream:77: undefined reference to 
`std::ios_base::Init::Init[in-charge]()'
    nnls.o(.text+0xa87):/usr/include/c++/3.3.3/iostream:77: undefined reference 
to `std::ios_base::Init::~Init [in-charge]()'

Is there a way to reject a selected C++ compiler and move on to the
next one in the list?

thanks,

roland
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                       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
roland@rlenter.com                            6818 Madeline Court
roland@astrofoto.org                           Brooklyn, NY 11220

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