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# ===========================================================================
# http://www.gnu.org/software/autoconf-archive/ax_cxx_var_prettyfunc.html
# ===========================================================================
#
# SYNOPSIS
#
# AX_CXX_VAR_PRETTYFUNC
#
# DESCRIPTION
#
# 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>>".
#
# LICENSE
#
# Copyright (c) 2014 Olaf Lenz <olenz@icp.uni-stuttgart.de>
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
#serial 1
AC_DEFUN([AX_CXX_VAR_PRETTYFUNC],
[
# try to find best __FUNCTION__ variant
AC_CACHE_CHECK([whether $CXX can get a pretty function name], ac_cv_cxx_var_prettyfunc,
ac_cv_cxx_var_prettyfunc=no
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(,[const char *s = __PRETTY_FUNCTION__])],
[ ac_cv_cxx_var_prettyfunc=__PRETTY_FUNCTION__ ])
AS_IF([test "x$ac_cv_cxx_var_prettyfunc" = "xno"], [
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(,[const char *s = __FUNCSIG__])],
[ ac_cv_cxx_var_prettyfunc=__FUNCSIG__ ])
])
AS_IF([test "x$ac_cv_cxx_var_prettyfunc" = "xno"], [
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(,[const char *s = __func__])],
[ ac_cv_cxx_var_prettyfunc=__func__ ])
])
AS_IF([test "x$ac_cv_cxx_var_prettyfunc" = "xno"], [
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(,[const char *s = __FUNCTION__])],
[ ac_cv_cxx_var_prettyfunc=__FUNCTION__ ])
])
)
AS_IF([test "x$ac_cv_cxx_var_prettyfunc" != "xno"], [
AC_DEFINE(HAVE_PRETTYFUNC,, [Whether __PRETTY_FUNCTION__ has a useful value.])
AC_DEFINE_UNQUOTED(__PRETTYFUNC__,$ac_cv_cxx_var_prettyfunc,
[contains the function wherein the macro is called])
],[
AC_DEFINE(__PRETTYFUNC__,"<<unknown>>")
])
])dnl
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