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mysql tries to use pthread_setschedparam() with policy = SCHED_OTHER,
which is not standardized and is not presently supported on Red Hat
platforms; in fact it generates lots of SELinux warnings (bug #477624).
Easiest fix is to disable the configure test for it.
We have to zap the test for pthread_setschedprio too, else it will try
to fall back on that.
diff -Naur mysql-5.1.52.orig/configure.in mysql-5.1.52/configure.in
--- mysql-5.1.52.orig/configure.in 2010-10-11 16:34:15.000000000 -0400
+++ mysql-5.1.52/configure.in 2011-01-05 22:36:53.249411523 -0500
@@ -2079,10 +2079,10 @@
localtime_r gethrtime gmtime_r \
locking longjmp lrand48 madvise mallinfo memcpy memmove \
mkstemp mlockall perror poll pread pthread_attr_create mmap mmap64 getpagesize \
- pthread_attr_getstacksize pthread_attr_setprio pthread_attr_setschedparam \
+ pthread_attr_getstacksize pthread_attr_setprio \
pthread_attr_setstacksize pthread_condattr_create pthread_getsequence_np \
pthread_key_delete pthread_rwlock_rdlock pthread_setprio \
- pthread_setprio_np pthread_setschedparam pthread_sigmask readlink \
+ pthread_setprio_np pthread_sigmask readlink \
realpath rename rint rwlock_init setupterm \
shmget shmat shmdt shmctl sigaction sigemptyset sigaddset \
sighold sigset sigthreadmask port_create sleep \
@@ -2128,7 +2128,7 @@
[Define to 1 if you have the `pthread_setschedprio' function.])
fi
;;
- *) AC_CHECK_FUNCS(pthread_setschedprio)
+ *) :
;;
esac
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