On 5/28/2017 10:15 AM, niXman wrote:
Edward Diener 2017-05-28 16:32:
2) libbacktrace can be part of a mingw-64 distribution but relies on
other files in that distribution ?
Yes.
Great !
I see in [2] below that there was a discussion of making libbacktrace
standalone, but it appears that in the 4 years from that discussion
that it was never followed through.
I can make the libbacktrace part of the mingw-w64 distribution. In order
to do this I should copy the three files(libbacktrace.a, backtrace.h,
gstdint.h) from the GCC build tree.
If libbacktrace were part of mingw-w64 distribution I think it would
benefit mingw-64 users. This is because the new Boost stacktrace library
( I am not its author ) uses libbacktrace to produce stack trace
information on demand, and I am sure you know that Boost is popular with
C++ programmers. For VC++ on Windows the Boost stacktrace library uses
other means to generate its stacktrace, so libbacktrace is really useful
for Boost stacktrace when mingw-64 is being used. You can see Boost
stacktrace at https://github.com/boostorg/stacktrace since it is now a
Boost git submodule, and it should be part of the next Boost release.
But pay attention to the limited possibilities of libbacktrace, the
developer[1] of this library writes about:
As of September 2016, libbacktrace only supports ELF and PE/COFF
executables with DWARF debugging information.
That does not seem very limiting. ELF and PE/COFF covers all popular
object file formats on Linux and Windows respectively and surely just
about everyone not using VC++ uses DWARF rather than sjlj.
[1] https://github.com/ianlancetaylor/libbacktrace
Thanks for the link.
How would I build this above-linked libbacktrace in mingw-64 for myself
? Am I supposed to use the current mingw-64 build script to do so and
just copy the aforementioned 3 files to some final directories ?
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