+ dnl ****************************************************************
+ dnl *** Check for sched_setaffinity from glibc versions before ***
+ dnl *** 2.3.4. The older versions of the function only take 2 ***
+ dnl *** parameters, not 3. ***
+ dnl *** ***
+ dnl *** Because the interface change was not made in a minor ***
+ dnl *** version rev, the __GLIBC__ and __GLIBC_MINOR__ macros ***
+ dnl *** won't always indicate the interface sched_affinity has. ***
+ dnl ****************************************************************
+ AC_MSG_CHECKING(for sched_setaffinity from glibc < 2.3.4)
+ AC_TRY_COMPILE([#include <sched.h>], [
+ int main() {
+ int mask = 1;
+ sched_setaffinity(0, &mask);
+ }
+ ], [
+ # Yes, we have it...
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(GLIBC_BEFORE_2_3_4_SCHED_SETAFFINITY, 1, [Have GLIBC_BEFORE_2_3_4_SCHED_SETAFFINITY])
+ ], [
+ # We have the new, three-parameter version
+ AC_MSG_RESULT(no)
+ ])
+
+