AC_INIT(foo.c)

AC_ARG_WITH(ssl,
 [--with-ssl[=DIR]   SSL crypt support (needs OpenSSL)],dnl
 [if test "$withval" != "no"; then
   AC_DEFINE(OPENSSL)
   OPENSSL=1
   if test "$withval" != "yes"; then
	SSLROOT=$withval
	LIBS="${LIBS} -L$SSLROOT/lib"
        CPPFLAGS="${CPPFLAGS} -I$SSLROOT/include"  
   fi
 fi],
 dnl Default: disable it
)

AC_PROG_CC

# Check OpenSSL
AC_DEFUN([CF_LIB_OPENSSL],
[
AC_CHECK_LIB(ssl,SSL_CTX_new,
[LIBS="${LIBS} -lssl -lcrypto"],
[AC_ERROR([Get the OpenSSL library (http://www.openssl.org/)])], dnl
-lcrypto
)])

if test "$OPENSSL" = "1"; then
CF_LIB_OPENSSL
fi

AC_OUTPUT(Makefile)