AC_C_INLINE
AX_C___ATTRIBUTE__
+AX_TLS
AC_CHECK_MEMBER([struct _IO_FILE._fileno],
[AC_DEFINE([HAVE_STRUCT__IO_FILE__FILENO], 1,
AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile])
AC_OUTPUT
+
+if test x"$ac_cv_tls" = x"none"; then
+ AC_MSG_WARN([thread-local storage not supported by compiler, \
+possible race condition in threaded programs])
+fi