Dear Ralf, sorry, it was my mistake. It was a complex interplay between the cross compiler (for VxWorks), a (lousy) wrapper script for the compiler, and the new way autoconf checks for the executable bit off binaries. I fixed the wrapper and now everything is fine... Thanks, however, for your help, Thies On Dienstag, 28. April 2009, Ralf Wildenhues wrote: > Hello Thies, > > * Thies Jochimsen wrote on Mon, Apr 27, 2009 at 02:03:20PM CEST: > > I have just upgraded to autoconf 2.63 (from 2.61) and I am now struggling > > with way the AC_CHECK_FUNCS behaves when cross compiling: > > In the past, I have used AC_CHECK_FUNCS to test whether certain functions > > are available on the the target host. But with 2.63, the test in > > AC_CHECK_FUNCS now, additionally, returns true if $cross_compiling is set > > to "yes" (which is always true in my case) and, thus, always declares a > > HAVE_SOMEFUNCTION, regardless whether the function is actually available. > > > > I understand that there was a reason for adding the extra check for > > $cross_compiling to AC_LINK_IFELSE: > > http://lists.gnu.org/archive/html/autoconf/2007-03/msg00085.html > > > > Is there a convenient way to check for functions available on the target > > host, even when cross compiling? > > I'm not sure I understand; I cannot connect your description in the > first paragraph with the mailing list reference below that. > Can you be more specific and show us an full example that produces > the wrong answer for you, or different answers between Autoconf 2.61 and > 2.63, including all commands you need to get there? > > A small example would be something like this; maybe you can modify this > so that it exposes the issue: > > cat >configure.ac <<'END' > AC_INIT > AC_CONFIG_HEADERS([config.h]) > AC_PROG_CC > AC_CHECK_FUNCS([doesnotexist]) > AC_OUTPUT > END > > autoconf > autoheader > ./configure > grep HAVE config.h > > > Thanks, > Ralf _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
