Avoid false positive detection of yaSSL

    dnl OpenSSL emulation layer. We still leave everything else believing

    dnl and acting like OpenSSL.

    AC_MSG_CHECKING([for yassl in disguise])

    AC_EGREP_CPP([^check for YASSL_VERSION], [

    AC_MSG_CHECKING([for yaSSL using OpenSSL compatibility mode])

    AC_TRY_COMPILE([

#include <openssl/ssl.h>

check for YASSL_VERSION

],

         dnl action if the text is found, this it has not been replaced by the

         dnl cpp

         AC_MSG_RESULT([no])

         ,

         dnl the text was not found, it was replaced by the cpp

         yassl="yes"

         AC_DEFINE(USE_YASSLEMUL, 1, [if you use yassl])

      ],[

#if defined(YASSL_VERSION) && defined(OPENSSL_VERSION_NUMBER)

        int dummy = SSL_ERROR_NONE;

#else

        Not the yaSSL OpenSSL compatibility header.

#endif

      ],[ 

        AC_MSG_RESULT([yes])

         curl_ssl_msg="enabled (OpenSSL emulation by yassl)"

       )

        AC_DEFINE_UNQUOTED(USE_YASSLEMUL, 1,

          [Define to 1 if using yaSSL in OpenSSL compatibility mode.])

        curl_ssl_msg="enabled (OpenSSL emulation by yaSSL)"

      ],[

        AC_MSG_RESULT([no])

    ])

  fi

  if test "$OPENSSL_ENABLED" = "1"; then