On 10/18/2012 10:11 AM, Sergio Belkin wrote: > > Thanks for you explanation, I didn''t understand well what does "none > required". > > I've found "The result of this test is cached in the > ac_cv_search_function variable as ‘none required’ if function is > already available" at > http://www.manpagez.com/info/autoconf/autoconf-2.69/autoconf_46.php > > So I understand that function was found in the library searched on in > another in the system, wasn't it? For an example, on cygwin, sin() is in libc, but on other platforms, you have to use libm to get sin(). So: AC_SEARCH_LIBS([sin], [m]) will set ac_cv_search_sin to 'none required' on cygwin, and '-lm' on other platforms. -- Eric Blake eblake@xxxxxxxxxx +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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