diff --git a/storage/innodb_plugin/plug.in b/storage/innodb_plugin/plug.in
index 7650251..3cc22c5 100644
--- a/storage/innodb_plugin/plug.in
+++ b/storage/innodb_plugin/plug.in
@@ -56,180 +56,10 @@ MYSQL_PLUGIN_ACTIONS(innodb_plugin,  [
   esac
   AC_SUBST(INNODB_DYNAMIC_CFLAGS)
 
-  AC_MSG_CHECKING(whether GCC atomic builtins are available)
-  # either define HAVE_IB_GCC_ATOMIC_BUILTINS or not
-  AC_TRY_RUN(
-    [
-      int main()
-      {
-	long	x;
-	long	y;
-	long	res;
-	char	c;
-
-	x = 10;
-	y = 123;
-	res = __sync_bool_compare_and_swap(&x, x, y);
-	if (!res || x != y) {
-          return(1);
-        }
-
-	x = 10;
-	y = 123;
-	res = __sync_bool_compare_and_swap(&x, x + 1, y);
-	if (res || x != 10) {
-          return(1);
-        }
-
-	x = 10;
-	y = 123;
-	res = __sync_add_and_fetch(&x, y);
-	if (res != 123 + 10 || x != 123 + 10) {
-	  return(1);
-	}
-
-	c = 10;
-	res = __sync_lock_test_and_set(&c, 123);
-	if (res != 10 || c != 123) {
-	  return(1);
-	}
-
-	return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_GCC_ATOMIC_BUILTINS], [1],
-                [GCC atomic builtins are available])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
-
-  AC_MSG_CHECKING(whether pthread_t can be used by GCC atomic builtins)
-  # either define HAVE_IB_ATOMIC_PTHREAD_T_GCC or not
-  AC_TRY_RUN(
-    [
-      #include <pthread.h>
-      #include <string.h>
-
-      int main(int argc, char** argv) {
-        pthread_t       x1;
-        pthread_t       x2;
-        pthread_t       x3;
-
-	memset(&x1, 0x0, sizeof(x1));
-	memset(&x2, 0x0, sizeof(x2));
-	memset(&x3, 0x0, sizeof(x3));
-
-        __sync_bool_compare_and_swap(&x1, x2, x3);
-
-        return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_ATOMIC_PTHREAD_T_GCC], [1],
-                [pthread_t can be used by GCC atomic builtins])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
-
-  AC_MSG_CHECKING(whether Solaris libc atomic functions are available)
-  # Define HAVE_IB_SOLARIS_ATOMICS if _all_ of the following
-  # functions are present.
-  AC_CHECK_FUNCS(atomic_add_long_nv \
-		 atomic_cas_32 \
-		 atomic_cas_64 \
-		 atomic_cas_ulong \
-		 atomic_swap_uchar)
-
-  if test "${ac_cv_func_atomic_add_long_nv}" = "yes" -a \
-          "${ac_cv_func_atomic_cas_32}" = "yes" -a \
-          "${ac_cv_func_atomic_cas_64}" = "yes" -a \
-          "${ac_cv_func_atomic_cas_ulong}" = "yes" -a \
-          "${ac_cv_func_atomic_swap_uchar}" = "yes" ; then
-
-    AC_DEFINE([HAVE_IB_SOLARIS_ATOMICS], [1],
-      [Define to 1 if Solaris libc atomic functions are available]
-    )
-  fi
-
-  AC_MSG_CHECKING(whether pthread_t can be used by Solaris libc atomic functions)
-  # either define HAVE_IB_ATOMIC_PTHREAD_T_SOLARIS or not
-  AC_TRY_RUN(
-    [
-      #include <pthread.h>
-      #include <string.h>
-
-      int main(int argc, char** argv) {
-        pthread_t       x1;
-        pthread_t       x2;
-        pthread_t       x3;
-
-        memset(&x1, 0x0, sizeof(x1));
-        memset(&x2, 0x0, sizeof(x2));
-        memset(&x3, 0x0, sizeof(x3));
-
-        if (sizeof(pthread_t) == 4) {
-        
-          atomic_cas_32(&x1, x2, x3);
-        
-        } else if (sizeof(pthread_t) == 8) {
-        
-          atomic_cas_64(&x1, x2, x3);
-        
-        } else {
-        
-          return(1);
-        }
-
-	return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_ATOMIC_PTHREAD_T_SOLARIS], [1],
-                [pthread_t can be used by solaris atomics])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
-
   # this is needed to know which one of atomic_cas_32() or atomic_cas_64()
   # to use in the source
   AC_CHECK_SIZEOF([pthread_t], [], [#include <pthread.h>])
 
-  # Check for x86 PAUSE instruction
-  AC_MSG_CHECKING(for x86 PAUSE instruction)
-  # We have to actually try running the test program, because of a bug
-  # in Solaris on x86_64, where it wrongly reports that PAUSE is not
-  # supported when trying to run an application. See
-  # http://bugs.opensolaris.org/bugdatabase/printableBug.do?bug_id=6478684
-  # We use ib_ prefix to avoid collisoins if this code is added to
-  # mysql's configure.in.
-  AC_TRY_RUN(
-    [
-      int main() {
-        __asm__ __volatile__ ("pause");
-        return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_PAUSE_INSTRUCTION], [1], [Does x86 PAUSE instruction exist])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
   ])
 
 # vim: set ft=config:
diff --git a/storage/xtradb/plug.in b/storage/xtradb/plug.in
index 3fadacc..a33f4dc 100644
--- a/storage/xtradb/plug.in
+++ b/storage/xtradb/plug.in
@@ -56,215 +56,10 @@ MYSQL_PLUGIN_ACTIONS(xtradb,  [
   esac
   AC_SUBST(INNODB_DYNAMIC_CFLAGS)
 
-  AC_MSG_CHECKING(whether GCC atomic builtins are available)
-  # either define HAVE_IB_GCC_ATOMIC_BUILTINS or not
-  AC_TRY_RUN(
-    [
-      int main()
-      {
-	long	x;
-	long	y;
-	long	res;
-	char	c;
-
-	x = 10;
-	y = 123;
-	res = __sync_bool_compare_and_swap(&x, x, y);
-	if (!res || x != y) {
-          return(1);
-        }
-
-	x = 10;
-	y = 123;
-	res = __sync_bool_compare_and_swap(&x, x + 1, y);
-	if (res || x != 10) {
-          return(1);
-        }
-
-	x = 10;
-	y = 123;
-	res = __sync_add_and_fetch(&x, y);
-	if (res != 123 + 10 || x != 123 + 10) {
-	  return(1);
-	}
-
-	c = 10;
-	res = __sync_lock_test_and_set(&c, 123);
-	if (res != 10 || c != 123) {
-	  return(1);
-	}
-	return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_GCC_ATOMIC_BUILTINS], [1],
-                [GCC atomic builtins are available])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
-
-  AC_MSG_CHECKING(whether GCC 64-bit atomic builtins are available)
-  # either define HAVE_IB_GCC_ATOMIC_BUILTINS_64 or not
-  AC_TRY_RUN(
-    [
-      #include <stdint.h>
-      int main()
-      {
-        int64_t x, y, res;
-
-	x = 10;
-	y = 123;
-	res = __sync_bool_compare_and_swap(&x, x, y);
-	if (!res || x != y) {
-	  return(1);
-	}
-
-	x = 10;
-	y = 123;
-	res = __sync_add_and_fetch(&x, y);
-	if (res != 123 + 10 || x != 123 + 10) {
-	  return(1);
-	}
-
-	return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_GCC_ATOMIC_BUILTINS_64], [1],
-                [GCC 64-bit atomic builtins are available])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
-
-  AC_MSG_CHECKING(whether pthread_t can be used by GCC atomic builtins)
-  # either define HAVE_IB_ATOMIC_PTHREAD_T_GCC or not
-  AC_TRY_RUN(
-    [
-      #include <pthread.h>
-      #include <string.h>
-
-      int main(int argc, char** argv) {
-        pthread_t       x1;
-        pthread_t       x2;
-        pthread_t       x3;
-
-	memset(&x1, 0x0, sizeof(x1));
-	memset(&x2, 0x0, sizeof(x2));
-	memset(&x3, 0x0, sizeof(x3));
-
-        __sync_bool_compare_and_swap(&x1, x2, x3);
-
-        return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_ATOMIC_PTHREAD_T_GCC], [1],
-                [pthread_t can be used by GCC atomic builtins])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
-
-  AC_MSG_CHECKING(whether Solaris libc atomic functions are available)
-  # Define HAVE_IB_SOLARIS_ATOMICS if _all_ of the following
-  # functions are present.
-  AC_CHECK_FUNCS(atomic_add_long_nv \
-		 atomic_cas_32 \
-		 atomic_cas_64 \
-		 atomic_cas_ulong \
-		 atomic_swap_uchar)
-
-  if test "${ac_cv_func_atomic_add_long_nv}" = "yes" -a \
-          "${ac_cv_func_atomic_cas_32}" = "yes" -a \
-          "${ac_cv_func_atomic_cas_64}" = "yes" -a \
-          "${ac_cv_func_atomic_cas_ulong}" = "yes" -a \
-          "${ac_cv_func_atomic_swap_uchar}" = "yes" ; then
-
-    AC_DEFINE([HAVE_IB_SOLARIS_ATOMICS], [1],
-      [Define to 1 if Solaris libc atomic functions are available]
-    )
-  fi
-
-  AC_MSG_CHECKING(whether pthread_t can be used by Solaris libc atomic functions)
-  # either define HAVE_IB_ATOMIC_PTHREAD_T_SOLARIS or not
-  AC_TRY_RUN(
-    [
-      #include <pthread.h>
-      #include <string.h>
-
-      int main(int argc, char** argv) {
-        pthread_t       x1;
-        pthread_t       x2;
-        pthread_t       x3;
-
-        memset(&x1, 0x0, sizeof(x1));
-        memset(&x2, 0x0, sizeof(x2));
-        memset(&x3, 0x0, sizeof(x3));
-
-        if (sizeof(pthread_t) == 4) {
-        
-          atomic_cas_32(&x1, x2, x3);
-        
-        } else if (sizeof(pthread_t) == 8) {
-        
-          atomic_cas_64(&x1, x2, x3);
-        
-        } else {
-        
-          return(1);
-        }
-
-	return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_ATOMIC_PTHREAD_T_SOLARIS], [1],
-                [pthread_t can be used by solaris atomics])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
-
   # this is needed to know which one of atomic_cas_32() or atomic_cas_64()
   # to use in the source
   AC_CHECK_SIZEOF([pthread_t], [], [#include <pthread.h>])
 
-  # Check for x86 PAUSE instruction
-  AC_MSG_CHECKING(for x86 PAUSE instruction)
-  # We have to actually try running the test program, because of a bug
-  # in Solaris on x86_64, where it wrongly reports that PAUSE is not
-  # supported when trying to run an application. See
-  # http://bugs.opensolaris.org/bugdatabase/printableBug.do?bug_id=6478684
-  # We use ib_ prefix to avoid collisoins if this code is added to
-  # mysql's configure.in.
-  AC_TRY_RUN(
-    [
-      int main() {
-        __asm__ __volatile__ ("pause");
-        return(0);
-      }
-    ],
-    [
-      AC_DEFINE([HAVE_IB_PAUSE_INSTRUCTION], [1], [Does x86 PAUSE instruction exist])
-      AC_MSG_RESULT(yes)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ],
-    [
-      AC_MSG_RESULT(no)
-    ]
-  )
   ])
 
 # vim: set ft=config: