On Wed, Feb 08, 2017 at 01:27:36PM -0200, Carlos Santos wrote: > Since commit beceb14b450ded6560ed743634a5e80604a8edf3, MATH_LIBS is set > to "-lm" when the isnan function is detected. In uClibc, however, isnan > is a macro that calls __isnan, __isnanf, or __isnanl, depending on the > size of the argument (double, float or long double). > > Fixes: > http://autobuild.buildroot.net/results/2c2/2c29a78ed81ca844a87dcd076ab3e14ea080296d/ > http://autobuild.buildroot.net/results/404/404b10f359b2ae8a7216729fa1bab37fed2d3d4c/ > > Signed-off-by: Carlos Santos <casantos@xxxxxxxxxxxxxx> > --- > configure.ac | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/configure.ac b/configure.ac > index 3759921..3bb3ba8 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -435,6 +435,7 @@ AM_CONDITIONAL([HAVE_OPENAT], [test "x$have_openat" = xyes]) > > AC_CHECK_FUNCS([isnan], [], > [AC_CHECK_LIB([m], [isnan], [MATH_LIBS="-lm"])] > + [AC_CHECK_LIB([m], [__isnan], [MATH_LIBS="-lm"])] > ) > AC_SUBST([MATH_LIBS]) Applied, thanks. (It would be possible to use AC_COMPILE_IFELSE() monster, but if AC_CHECK_LIB() is good enough than it's probably better.) Karel -- Karel Zak <kzak@xxxxxxxxxx> http://karelzak.blogspot.com -- To unsubscribe from this list: send the line "unsubscribe util-linux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
