__xpg_basename is not a member of

If the c++ code gets the error that  '__xpg_basename' is not a member of 'namespace or class' check for use of libgen.h

The file libgen.h has a #define basename __xpg_basename   that will replace all occurrences of basename including those of other classes.

It may be possible to reorder includes to avoid the error. Make libgen.h be included last.