7c4a21eab4
This is necessary in order to build epics-base with musl libc, for example, and any other C libraries which don't include this functionality. In order to not regress builds with older compilers, we still support the uclibc check. Furthermore, it has been checked that uclibc-ng (the maintained version of uclibc) doesn't install the <execinfo.h> header when the functionality is disabled [1] [2]. To avoid repetition, we don't define HAS_EXECINFO to 0 when it is not available. [1] https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tree/Makefile.in?id=cdb07d2cd52af39feb425e6d36c02b30916b9f0a#n224 [2] https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tree/Makefile.in?id=cdb07d2cd52af39feb425e6d36c02b30916b9f0a#n277
40 lines
918 B
C++
40 lines
918 B
C++
/*
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* Copyright: Stanford University / SLAC National Laboratory.
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*
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* SPDX-License-Identifier: EPICS
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* EPICS BASE is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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*
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* Author: Till Straumann <strauman@slac.stanford.edu>, 2011, 2014
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*/
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// pull in libc feature test macros
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#include <stdlib.h>
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// execinfo.h may not be present if uclibc is configured to omit backtrace()
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// some C libraries, such as musl, don't have execinfo.h at all
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#if defined(__has_include)
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# if __has_include(<execinfo.h>)
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# define HAS_EXECINFO 1
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# endif
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#elif !defined(__UCLIBC_MAJOR__) || defined(__UCLIBC_HAS_EXECINFO__)
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# define HAS_EXECINFO 1
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#endif
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#if HAS_EXECINFO
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#include <execinfo.h>
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#endif
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#include "epicsStackTracePvt.h"
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int epicsBackTrace(void **buf, int buf_sz)
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{
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#if HAS_EXECINFO
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return backtrace(buf, buf_sz);
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#else
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return -1;
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#endif
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}
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