need-proto.m4 revision 127808 
1dnl $Id: need-proto.m4,v 1.4.6.1 2004/04/01 07:27:35 joda Exp $
2dnl
3dnl
4dnl Check if we need the prototype for a function
5dnl
6
7dnl AC_NEED_PROTO(includes, function)
8
9AC_DEFUN([AC_NEED_PROTO], [
10if test "$ac_cv_func_$2+set" != set -o "$ac_cv_func_$2" = yes; then
11AC_CACHE_CHECK([if $2 needs a prototype], ac_cv_func_$2_noproto,
12AC_TRY_COMPILE([$1],
13[struct foo { int foo; } xx;
14extern int $2 (struct foo*);
15$2(&xx);
16],
17eval "ac_cv_func_$2_noproto=yes",
18eval "ac_cv_func_$2_noproto=no"))
19if test "$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()])
22fi
23fi
24])
25