Hello Johan, On Wed, May 28, 2008 at 11:08:22AM +0200, Johan Oudinet wrote: > checking gmp.h usability... yes > checking gmp.h presence... yes > checking for gmp.h... yes > checking gmpxx.h usability... no > checking gmpxx.h presence... no > checking for gmpxx.h... no ... > $ find /usr/include/ -name 'gmp*.h' > /usr/include/gmpxx.h > /usr/include/gmp.h > > How the configure can find one but not the other ?! this is hard to guess. configure creates a small file in the current language (default is C), containing "#include <gmpxx.h>" and tries to process it. The "usability" check tries to compile it, which "presence" means processing by the preprocessor only; but in any case, it's not a mere check whether the file exists. These attempts are logged in config.log; visit the log to see the exact test source file and the error messages from the compiler and preprocessor. HTH, Stepan _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
