tree 930f0e123c239adf23553dfb3d5b5e4f83ab0e5e
parent af514777f4327932a3e84f83d79e941967503e15
author David Lamparter <equinox@opensourcerouting.org> 1375343016 +0000
committer David Lamparter <equinox@opensourcerouting.org> 1396365644 +0200

build: improve backtrace support/detection

libexecinfo is used to provide backtrace() on *BSD.  The API is
compatible with glibc's, so this is a "free" improvement.

To improve configure behaviour, the following configure options are
modified/introduced:

* --enable-gcc-rdynamic now defaults to "on" if the compiler is gcc.
  (I sadly wasn't able to find any documentation on the availability of
  this option for llvm, even though at least the version I have
  installed does support it)

* --enable-backtrace has been added.  This behaves as off/auto/on
  switch, i.e. giving either {dis,en}able will result in the requested
  behaviour (or an error if support wasn't found)

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>