1 dnl $Id: need-proto.m4,v 1.4 2002/08/23 15:07:41 joda Exp $
4 dnl Check if we need the prototype for a function
7 dnl AC_NEED_PROTO(includes, function)
9 AC_DEFUN(AC_NEED_PROTO, [
10 if test "$ac_cv_func_$2+set" != set -o "$ac_cv_func_$2" = yes; then
11 AC_CACHE_CHECK([if $2 needs a prototype], ac_cv_func_$2_noproto,
13 [struct foo { int foo; } xx;
14 extern int $2 (struct foo*);
17 eval "ac_cv_func_$2_noproto=yes",
18 eval "ac_cv_func_$2_noproto=no"))
19 if test "$ac_cv_func_$2_noproto" = yes; then
20 AC_DEFINE(AS_TR_CPP(NEED_[]$2[]_PROTO), 1,
21 [define if the system is missing a prototype for $2()])