Tom Lane wrote: > "F. Laupretre" <[EMAIL PROTECTED]> writes: > > In order for the check to be done correctly, we have to provide a > > program that the compiler cannot optimize, ie where it cannot detect > > that the call is useless, even if it is very very smart. Here is a > > patch with such a program. > > I haven't got a lot of faith in your proposed patch --- with > sufficiently aggressive optimization, the compiler might inline > the is_f() function, no? After looking at the modern version of > AC_CHECK_FUNC, I'm thinking that the best answer is to make the > finite() result affect the program's exit status. Would you try > this version of the check and see if it works for you? > > AC_TRY_LINK([#include <math.h>], > [return finite(1.0) ? 0 : 1;], > [AC_DEFINE(HAVE_FINITE, 1, [Define to 1 if you have finite().]) > AC_MSG_RESULT(yes)], > [AC_MSG_RESULT(no)])
Could any other configure tests fail in this way? -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
