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AC_DEFUN([AC_BACKTRACE], [
#------------------------------
# backtrace support (for glibc)
#------------------------------
# Basic backtrace functionnality
have_glibc_backtrace=no
AC_MSG_CHECKING([for glibc backtrace])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if defined(__GNUC__)
#define _GNU_SOURCE
#include <memory.h>
#include <execinfo.h>
#endif]],
[[ void *tr_array[10]; backtrace(tr_array, 10); ]])],
[have_glibc_backtrace=yes],
[have_glibc_backtrace=no])
AC_MSG_RESULT($have_glibc_backtrace)
if test "x$have_glibc_backtrace" = "xyes"; then
CHECK_COMPILER_ARG(C,"-rdynamic", CFLAGS, BACKTRACE_CFLAGS)
CHECK_COMPILER_ARG(C++,"-rdynamic", CXXFLAGS, BACKTRACE_CXXFLAGS)
CHECK_COMPILER_ARG(Fortran 77,"-rdynamic", FFLAGS, BACKTRACE_FFLAGS)
AC_DEFINE(HAVE_GLIBC_BACKTRACE, 1, HAVE_GLIBC_BACKTRACE)
fi
# C++ demangling
have_cplus_demangle=no
AC_LANG_PUSH(C++)
AC_MSG_CHECKING([for stdc++ abi::__cxa_demangle])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <cxxabi.h>]],
[[
std::size_t length = 0; int cc; char* ret = abi::__cxa_demangle("3barI5emptyLi17EE", 0, &length, &cc); ]])],
[have_cplus_demangle=yes],
[have_cplus_demangle=no])
AC_MSG_RESULT($have_cplus_demangle)
if test "x$have_cplus_demangle" = "xyes"; then
CHECK_COMPILER_ARG(C,"-rdynamic", CFLAGS, BACKTRACE_CFLAGS)
CHECK_COMPILER_ARG(C++,"-rdynamic", CXXFLAGS, BACKTRACE_CXXFLAGS)
CHECK_COMPILER_ARG(Fortran 77,"-rdynamic", FFLAGS, BACKTRACE_FFLAGS)
AC_DEFINE(HAVE_CPLUS_DEMANGLE, 1, HAVE_CPLUS_DEMANGLE)
fi
AC_LANG_POP
])
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