Jakub Jelinek <[EMAIL PROTECTED]> writes: > Guess that's because AC_HAVE_FUNCS(isinf) is wrong. > isinf/isfinite/fpclassify are all documented as macros in ISO C99. > So > [AC_MSG_CHECKING(for isinf with <math.h>) > AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <math.h> > volatile int x; volatile float f;]], [[x = isinf(f)]])],[AC_MSG_RESULT(yes) > AC_DEFINE(HAVE_ISINF)],[AC_MSG_RESULT(no)])]) > should be reasonably safe for now.
Perhaps it should just check whether the macro isinf exists (but still use AC_CHECK_FUNCS(isinf) for pre-C99 hosts). Andreas. -- Andreas Schwab, SuSE Labs, [EMAIL PROTECTED] SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."
