dnl Determine whether the linker supports the --version-script option.
AC_LINK_VERSION_SCRIPT
-dnl Check for libtool and the library that has dlopen function (which must come
-dnl before the AC_PROG_LIBTOOL check in order to enable dlopening libraries with
-dnl libtool).
-AC_LIBTOOL_DLOPEN
-AC_LIB_LTDL
-
AC_MSG_CHECKING([tool compatibility])
dnl Ensure that compilation tools are GCC or a GNU compatible compiler such as