diff --git a/acconfig.h b/acconfig.h
index 43a2e90993..2ab1a827cd 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -20,9 +20,6 @@
 /** define if your system has sigwait() */
 #undef HAVE_SIGWAIT
 
-/** define if sysconf() is available */
-#undef HAVE_SYSCONF
-
 /** define if sysctlbyname() is available */
 #undef HAVE_SYSCTLBYNAME
 
diff --git a/config.h.in b/config.h.in
index f2ad6c379e..3cc00140c0 100644
--- a/config.h.in
+++ b/config.h.in
@@ -20,9 +20,6 @@
 /** define if your system has sigwait() */
 #undef HAVE_SIGWAIT
 
-/** define if sysconf() is available */
-#undef HAVE_SYSCONF
-
 /** define if sysctlbyname() is available */
 #undef HAVE_SYSCTLBYNAME
 
@@ -413,6 +410,9 @@
 /* Define to 1 if you have the `strlcpy' function. */
 #undef HAVE_STRLCPY
 
+/* Define to 1 if you have the `sysconf' function. */
+#undef HAVE_SYSCONF
+
 /* Define to 1 if you have the <sys/capability.h> header file. */
 #undef HAVE_SYS_CAPABILITY_H
 
diff --git a/configure b/configure
index dda2137af9..701d58e226 100755
--- a/configure
+++ b/configure
@@ -15358,11 +15358,16 @@ done
 #
 # Look for sysconf to allow detection of the number of processors.
 #
-ac_fn_c_check_func "$LINENO" "sysconf" "ac_cv_func_sysconf"
+for ac_func in sysconf
+do :
+  ac_fn_c_check_func "$LINENO" "sysconf" "ac_cv_func_sysconf"
 if test "x$ac_cv_func_sysconf" = xyes; then :
-  $as_echo "#define HAVE_SYSCONF 1" >>confdefs.h
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SYSCONF 1
+_ACEOF
 
 fi
+done
 
 
 
diff --git a/configure.in b/configure.in
index ce82ce1dc0..fd135f7436 100644
--- a/configure.in
+++ b/configure.in
@@ -761,7 +761,7 @@ AC_CHECK_HEADERS([pthread_np.h], [], [], [#include <pthread.h>])
 #
 # Look for sysconf to allow detection of the number of processors.
 #
-AC_CHECK_FUNC(sysconf, AC_DEFINE(HAVE_SYSCONF),)
+AC_CHECK_FUNCS([sysconf])
 
 AC_SUBST(ALWAYS_DEFINES)