Re: [media-ctl][PATCHv2 3/4] libmediactl: use udev conditionally to get a devname

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On Fri, 2011-09-02 at 13:17 +0200, Laurent Pinchart wrote: 
> Hi Andy,
> 
> On Friday 02 September 2011 10:42:06 Andy Shevchenko wrote:
> > On Tue, 2011-08-30 at 21:14 +0200, Laurent Pinchart wrote:
> > > > +AC_ARG_WITH([libudev],
> > > > +    AS_HELP_STRING([--without-libudev],
> > > > +        [Ignore presence of libudev and disable it]))
> > > > +
> > > > +AS_IF([test "x$with_libudev" != "xno"],
> > > > +    [PKG_CHECK_MODULES(libudev, libudev, have_libudev=yes,
> > > > have_libudev=no)],
> > > > +    [have_libudev=no])
> > > 
> > > I don't think this works when cross-compiling.
> > 
> > Do you mean pkg-config call?
> > Its manual tells us about PKG_CONFIG_SYSROOT_DIR which might be helpful.
> 
> If I don't set that, pkg-config seems to pick libudev from the host and 
> consider that libudev is available. Compilation then fails.
> 
> As most users cross-compile libmediactl, I would like to avoid this situation. 
> Requiring the user to set PKG_CONFIG_SYSROOT_DIR to habe libudev support is 
> fine, but I would like the build to succeed out of the box when cross-
> compiling without libudev support. Is that possible ?
with my patch you run ./configure --without-libudev
Would you like opposite: like ./configure (means w/o
libudev), ./configure --with-libudev otherwise?


-- 
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy
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