DESCRIPTION"writemain()" takes an argument list of directories containing archive libraries that relate to perl modules and should be linked into a new perl binary. It writes a corresponding perlmain.c file that is a plain C file containing all the bootstrap code to make the modules associated with the libraries available from within perl. If the first argument to "writemain()" is a reference to a scalar it is used as the filename to open for output. Any other reference is used as the filehandle to write to. Otherwise output defaults to "STDOUT".
The typical usage is from within a Makefile generated by ExtUtils::MakeMaker. So under normal circumstances you won't have to deal with this module directly.