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3.10. What documentation exists for g++ 2.x?
Relatively little.
The gcc manual describes the C front end, and also the back
end, which is shared by the C++ compiler, but there is relatively little
documentation for the C++ front end beyond a cursory description of the
command line options (although more C++ specific
information has been added to the gcc manual as of version 2.4.1).
There is a Unix-style manual entry,
"g++.1", in the gcc-2.x distribution; this describes the extra
command-line options that g++ supports, and the #pragma interface and
#pragma implementation directives.
(Latest news: as of 2.4.0, these pragmas are finally described in the
main gcc manual).
A draft of a document describing the g++ internals appears in the gcc
distribution (called g++int.texi); it is still incomplete.