diff --git a/config.h.in b/config.h.in
index 7d5216d..afe71b3 100644
--- a/config.h.in
+++ b/config.h.in
@@ -30,6 +30,9 @@
 /* 1 if have memset in memory.h. */
 #undef HAVE_MEMSET
 
+/* 1 if have OSX SecKeychain. */
+#undef HAVE_OSX_SECKEYCHAIN
+
 /* Have the SQLITE3 library */
 #undef HAVE_SQLITE3
 
diff --git a/configure b/configure
index 103a7dc..ed7f612 100755
--- a/configure
+++ b/configure
@@ -16425,6 +16425,46 @@
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for OSX SecKeychain" >&5
+$as_echo_n "checking for OSX SecKeychain... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <CoreFoundation/CoreFoundation.h>
+    #include <Security/Security.h>
+    #include <CoreServices/CoreServices.h>
+    void test() { SecKeychainRef x; }
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_OSX_SECKEYCHAIN 1
+_ACEOF
+
+
+else
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_OSX_SECKEYCHAIN 0
+_ACEOF
+
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
 
 
 
diff --git a/configure.ac b/configure.ac
index 3fda705..6cab8b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -109,6 +109,20 @@
     AC_DEFINE_UNQUOTED([HAVE_STDINT], 0, [1 if have stdint.h.])
 ])
 
+AC_MSG_CHECKING([for OSX SecKeychain])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+    [[#include <CoreFoundation/CoreFoundation.h>]]
+    [[#include <Security/Security.h>]]
+    [[#include <CoreServices/CoreServices.h>]]
+    [[void test() { SecKeychainRef x; }]])
+], [
+    AC_MSG_RESULT([yes])
+    AC_DEFINE_UNQUOTED([HAVE_OSX_SECKEYCHAIN], 1, [1 if have OSX SecKeychain.])
+], [
+    AC_MSG_RESULT([no])
+    AC_DEFINE_UNQUOTED([HAVE_OSX_SECKEYCHAIN], 0, [1 if have OSX SecKeychain.])
+])
+
 DX_HTML_FEATURE(ON)
 DX_CHM_FEATURE(OFF)
 DX_CHI_FEATURE(OFF)