+# BEGIN Changes from original libcurl.m4:
+# Give it a 2nd shot using 'gnurl/curl.h'
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <gnurl/curl.h>],[
+/* Try and use a few common options to force a failure if we are
+ missing symbols or can't link. */
+int x;
+curl_easy_setopt(NULL,CURLOPT_URL,NULL);
+x=CURL_ERROR_SIZE;
+x=CURLOPT_WRITEFUNCTION;
+x=CURLOPT_FILE;
+x=CURLOPT_ERRORBUFFER;
+x=CURLOPT_STDERR;
+x=CURLOPT_VERBOSE;
+])],libgnurl_cv_lib_gnurl_usable=yes)
+# END Changes from original libcurl.m4:
+