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libbacktrace: update README

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	* README: Update.
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Ian Lance Taylor 2022-05-28 07:57:32 -07:00
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The libbacktrace library
Initially written by Ian Lance Taylor <iant@google.com>
Initially written by Ian Lance Taylor <iant@golang.org>
The libbacktrace library may be linked into a program or library and
used to produce symbolic backtraces. Sample uses would be to print a
detailed backtrace when an error occurs or to gather detailed
profiling information.
used to produce symbolic backtraces.
Sample uses would be to print a detailed backtrace when an error
occurs or to gather detailed profiling information.
In general the functions provided by this library are async-signal-safe,
meaning that they may be safely called from a signal handler.
The libbacktrace library is provided under a BSD license. See the
source files for the exact license text.
The libbacktrace library is provided under a BSD license.
See the source files for the exact license text.
The public functions are declared and documented in the header file
backtrace.h, which should be #include'd by a user of the library.
Building libbacktrace will generate a file backtrace-supported.h,
which a user of the library may use to determine whether backtraces
will work. See the source file backtrace-supported.h.in for the
macros that it defines.
will work.
See the source file backtrace-supported.h.in for the macros that it
defines.
As of September 2012, libbacktrace only supports ELF executables with
DWARF debugging information. The library is written to make it
straightforward to add support for other object file and debugging
formats.
As of October 2020, libbacktrace supports ELF, PE/COFF, Mach-O, and
XCOFF executables with DWARF debugging information.
In other words, it supports GNU/Linux, *BSD, macOS, Windows, and AIX.
The library is written to make it straightforward to add support for
other object file and debugging formats.
The library relies on the C++ unwind API defined at
https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
This API is provided by GCC and clang.