2002-08-30 21:23:27 +00:00
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dnl $Id: need-proto.m4,v 1.4 2002/08/23 15:07:41 joda Exp $
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2000-01-09 20:58:00 +00:00
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dnl
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dnl
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dnl Check if we need the prototype for a function
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dnl
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dnl AC_NEED_PROTO(includes, function)
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AC_DEFUN(AC_NEED_PROTO, [
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if test "$ac_cv_func_$2+set" != set -o "$ac_cv_func_$2" = yes; then
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AC_CACHE_CHECK([if $2 needs a prototype], ac_cv_func_$2_noproto,
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AC_TRY_COMPILE([$1],
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[struct foo { int foo; } xx;
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extern int $2 (struct foo*);
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$2(&xx);
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],
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eval "ac_cv_func_$2_noproto=yes",
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eval "ac_cv_func_$2_noproto=no"))
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if test "$ac_cv_func_$2_noproto" = yes; then
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2002-08-30 21:23:27 +00:00
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AC_DEFINE(AS_TR_CPP(NEED_[]$2[]_PROTO), 1,
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[define if the system is missing a prototype for $2()])
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2000-01-09 20:58:00 +00:00
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fi
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fi
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])
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