https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85768
Bug ID: 85768
Summary: FreeBSD bootstrap fails due to undefined reference to
'backtrace'
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: andreast at gcc dot gnu.org
Target Milestone: ---
A recent commit (260054) broke bootstrap on FreeBSD. The reason is an undefined
reference to 'backtrace'. This function is available on FreeBSD too but not in
libc. It is available in libexecinfo. A quick hack to linkage.m4 to add this
library if found showed a 37 failure count instead of 7k+ without.
I do not know the right to link an additional library for debug purposes.
Also, this might be applicable to NetBSD too, don't have it here but the man
page of backtrace notes that the function appeared in NetBSD 7.0 and FreeBSD
10.
