AC_PROG_CC
AC_PROG_INSTALL
PKG_CHECK_MODULES(GNUTLS, gnutls >= 1.4.0, , AC_MSG_ERROR(Could not find gnutls))
-LIBS="$GNUTLS_LIBS $LIBS -lz"
-CFLAGS="$GNUTLS_CFLAGS $CFLAGS"
+AM_PATH_LIBGCRYPT(,,AC_MSG_ERROR(Could not find gcrypt))
+LIBS="$LIBGCRYPT_LIBS $GNUTLS_LIBS $LIBS -lz"
+CFLAGS="$LIBGCRYPT_CFLAGS $GNUTLS_CFLAGS $CFLAGS"
AC_OUTPUT(Makefile)