GNU Autoconf Archive branch master updated. v2014.02.28-18-geeae82a

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- Log -----------------------------------------------------------------
commit eeae82a97334b0e080f808168e9c1698d4812028
Author: Thomas Jahns <address@hidden>
Date:   Sat Sep 13 23:45:55 2014 +0200

    AX_EXECINFO: new macro to test execinfo size type
    
    <execinfo.h> has been available on a number of systems now, but 
unfortunately
    different systems use different types to represent the size of the 
backtrace,
    with netBSD and FreeBSD using size_t and Linux, Mac OS X. To build calls 
that
    work with both implementations without warning, this macro not only checks 
if
    the execinfo header is available but also what type is used for the len
    argument of backtrace_symbols and the return value of backtrace.
    
    All in all this macro defines
    
        HAVE_EXECINFO_H if execinfo.h can be included,
        backtrace_size_t to the len argument type, i.e. int or size_t,
        HAVE_BACKTRACE to 1 if the function can be linked to,
    
    and append any library needed to LIBS (e.g. some BSD's need -lexecinfo).
    
    Submitted in <https://savannah.gnu.org/patch/index.php?8525>.

-----------------------------------------------------------------------

Summary of changes:
 NEWS              |    3 ++
 m4/ax_execinfo.m4 |   67 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+), 0 deletions(-)
 create mode 100644 m4/ax_execinfo.m4


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