1178825Sdfrdnl $Id: need-proto.m4 14166 2004-08-26 12:35:42Z joda $
255682Smarkmdnl
355682Smarkmdnl
455682Smarkmdnl Check if we need the prototype for a function
555682Smarkmdnl
655682Smarkm
755682Smarkmdnl AC_NEED_PROTO(includes, function)
855682Smarkm
9127808SnectarAC_DEFUN([AC_NEED_PROTO], [
1055682Smarkmif test "$ac_cv_func_$2+set" != set -o "$ac_cv_func_$2" = yes; then
1155682SmarkmAC_CACHE_CHECK([if $2 needs a prototype], ac_cv_func_$2_noproto,
12178825SdfrAC_COMPILE_IFELSE([AC_LANG_PROGRAM([[$1
13178825Sdfrstruct foo { int foo; } xx;
14178825Sdfrextern int $2 (struct foo*);]],[[$2(&xx)]])],
15178825Sdfr[eval "ac_cv_func_$2_noproto=yes"],
16178825Sdfr[eval "ac_cv_func_$2_noproto=no"]))
1755682Smarkmif test "$ac_cv_func_$2_noproto" = yes; then
18102644Snectar	AC_DEFINE(AS_TR_CPP(NEED_[]$2[]_PROTO), 1,
19102644Snectar		[define if the system is missing a prototype for $2()])
2055682Smarkmfi
2155682Smarkmfi
2255682Smarkm])
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