Will g++ compile InterViews?  The NIH class library?  Rogue Wave?
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   The NIH class library uses a non-portable, compiler-dependent hack
to initialize itself, which makes life difficult for g++ users.  It
will not work without modification, and I don't know what modifications
are required or whether anyone has done them successfully.

   In short, it's not going to happen any time soon (previous FAQs
referred to patches that a new NIHCL release would hopefully contain,
but this hasn't happened).

   *Note:* I thought I saw an item indicating that someone *had*
patched NIHCL to work with g++.  Any pointers?

   I think that as of version 2.5.6, the standard g++ will compile the
standard 3.1 InterViews completely successfully.  Note that you'll need
the `-fno-for-scope' flag if you use gcc-2.7.0; with 2.7.2 you may be
able to omit this flag but you'll get warnings.

   According to Jason Merrill, gcc-2.7.0 and newer works with Rogue
Wave's `tools.h++' class library, but you may want to grab
`ftp://ftp.cygnus.com/pub/g++/Tools.h++-6.1-patch'.  Again, you'll need
the `-fno-for-scope' flag since Rogue Wave hasn't fixed their code to
comply with the new standard yet.