-# we need to check for the header because if it exists we set the openssl
-# and gcrypt MT callback hooks. This is mostly so that libcurl operates
-# in MT manner correctly.
-AC_MSG_CHECKING([for CRYPTO_set_locking_callback(0)])
-AC_TRY_LINK([],[CRYPTO_set_locking_callback(0);],
- [have_curl_static=yes],
- [have_curl_static=no])
-AC_MSG_RESULT($have_curl_static)
+AC_CHECK_HEADER([curl/curl.h],, AC_MSG_ERROR($missing_library))
+XB_FIND_SONAME([CURL], [curl])
+AC_MSG_CHECKING([for CRYPTO_set_locking_callback(0) in $CURL_SONAME])
+if test "$host_vendor" = "apple" ; then
+ libchecker="$NM"
+ searchpattern="T [_]?CRYPTO_set_locking_call"
+else
+ libchecker="$READELF -s"
+ searchpattern="CRYPTO_set_locking_call"
+fi
+if test $($libchecker $CURL_FILENAME | grep -Eq "${searchpattern}" ; echo $?) -eq 0 ; then
+ AC_MSG_RESULT(yes)
+ AC_DEFINE([HAS_CURL_STATIC], [1], [Whether OpenSSL inside libcurl is static.])
+else
+ AC_MSG_RESULT(no)
+fi
+