>> The Python configure.in file contains a line similar to this:
>>
>> AC_CHECK_FUNCS(acosh asinh atanh expm1 finite isinf isnan log1p)
>>
>> On Solaris 10 isinf is not detected because the generated conftest.c
>> doesn't #include <math.h>. Is there a way to tell AC_CHECK_FUNCS
>> to do that?
Eric> No - the purpose of AC_CHECK_FUNCS is to check whether the linker
Eric> can find a function by that name, independently of system headers,
Eric> so there is no reason to include any system headers.
...
Eric> The above test should be rewritten (with proper m4 quoting) as:
Eric> AC_CHECK_FUNCS([acosh asinh atanh expm1 finite log1p])
Eric> AC_CHECK_DECLS([isinf isnan], [], [], [[#include <math.h>]])
Eric> then your code adjusted to check for HAVE_DECL_ISINF rather than
Eric> HAVE_ISINF.
Thanks. That helps a lot. I've passed on your reference to the gnulib
isinf and isnan modules to the folks doing the heavy lifting on Python's
math code.
--
Skip Montanaro - skip@xxxxxxxxx - http://smontanaro.dyndns.org/
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