AX_CXX_VAR_PRETTYFUNC
This function tries to determine the best C++ macro/identifier that contains the current function name. Depending on the compiler, this may be __PRETTY_FUNCTION__ (GCC), __FUNCSIG__ (MSVC), __func__ (C++ standard), __FUNCTION__ (fallback).
The function will define HAVE_PRETTYFUNC if a macro exists, and define __PRETTYFUNC__ to the best possible macro. When HAVE_PRETTYFUNC is not defined, __PRETTYFUNC__ will contain the constant string "<<unknown>>".
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Copyright © 2014 Olaf Lenz olenz@icp.uni-stuttgart.de
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