gcc documentation hole: -rdynamic

[Nelson H. F. Beebe]

In gcc-2.95.2 and gcc-2.95.3 (and likely earlier versions), and
including the 3.0 development snapshots up to this week's
gcc-20010423, the flag -rdynamic is recognized by gcc, but is not
present in the output of "gcc -help", nor in "man gcc", nor in the
gcc.info* files.

The -rdynamic flag is thus little known and little used, but it
happens to be used in GNU gawk, where it is associated with a dynamic
module loading capability.

Assuming that -rdynamic is expected to remain supported by gcc, can
documentation of this flag please be added to future releases?

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