On Sun, Oct 08, 2023 at 10:14:22PM -0400, Sean McBride wrote: > Hello, > > I've been trying to compile some open source C/C++ code on OpenBSD (that > already builds on Mac, Windows, and linux) and one error I hit on one > project was a link error trying to link to the backtrace() function. > > So I went to check the man page. But the man page does not document what > linker flag is needed. Luckily the FreeBSD man page does. > > Contrast the first few lines of each: > > ----------------------------------------------- > FreeBSD: > > NAME > backtrace -- fill in the backtrace of the currently executing > thread > > LIBRARY > Backtrace Access Library (libexecinfo, -lexecinfo) > > SYNOPSIS > #include <execinfo.h> > ----------------------------------------------- > > > ----------------------------------------------- > OpenBSD: > > NAME > backtrace, backtrace_symbols, backtrace_symbols_fd, > backtrace_symbols_fmt, backtrace_symbols_fd_fmt -- fill in the > back- > trace of the currently executing thread > > SYNOPSIS > #include <execinfo.h> > ----------------------------------------------- > > > So tldr: `man backtrace` should name the required linker flag (-lexecinfo)
from mdoc(7): .\" .Sh LIBRARY .\" For sections 2, 3, and 9 only. .\" Not used in OpenBSD. note about it not being used added by jmc@ in 2010 Only use in base is in libelf.
