two stmts, enclose them in `{' ... `}'.
# AC_MSG_WARN(PROBLEM)
# --------------------
define([AC_MSG_WARN],
-[_AC_ECHO([configure:__oline__: WARNING: $1], AC_FD_LOG)
-_AC_ECHO([configure: WARNING: $1], 2)])
+[{ _AC_ECHO([configure:__oline__: WARNING: $1], AC_FD_LOG)
+_AC_ECHO([configure: WARNING: $1], 2); }])
# AC_MSG_ERROR(ERROR, [EXIT-STATUS = 1])
# AC_MSG_WARN(PROBLEM)
# --------------------
define([AC_MSG_WARN],
-[_AC_ECHO([configure:__oline__: WARNING: $1], AC_FD_LOG)
-_AC_ECHO([configure: WARNING: $1], 2)])
+[{ _AC_ECHO([configure:__oline__: WARNING: $1], AC_FD_LOG)
+_AC_ECHO([configure: WARNING: $1], 2); }])
# AC_MSG_ERROR(ERROR, [EXIT-STATUS = 1])