Bug#927739: FTBFS: undefined reference to `yylex'

[Petter Reinholdtsen <pere@hungry.com>]

[Sebastian Dröge]
> I did some more testing. It happens only if libfl-dev is installed,
> which was on my system but is not part of the build dependencies.
> 
> So this should either become part of Build-Conflicts or has to be
> fixed, but it's less bad than I thought :)
> 
> To solve it, one can link with libfl.a instead of libfl.so apparently.

I believe this only happen with older autoconf/automake macros.  Not
sure exactly what trigger it, but todays release seem to have fixed it
by using AC_PROG_LEX(noyywrap) in configure.ac.  I do not believe it
is because libfl-dev is installed but because a autoconf macro is
misbehaving.

I believe it is fixed in 0.4.2.

-- 
Happy hacking
Petter Reinholdtsen