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[metaconfig.git] / U / threads / d_ttyname_r.U

?RCS: $Id: d_ttyname_r.U,v 0RCS:
?RCS: Copyright (c) 2002,2003 Jarkko Hietaniemi
?RCS:
?RCS: You may distribute under the terms of either the GNU General Public
?RCS: License or the Artistic License, as specified in the README file.
?RCS:
?RCS: Generated by the reentr.pl from the Perl 5.8 distribution.
?RCS:
?MAKE:d_ttyname_r ttyname_r_proto: Inlibc Protochk Hasproto i_systypes usethreads i_unistd
?MAKE:	-pick add $@ %<
?S:d_ttyname_r:
?S:	This variable conditionally defines the HAS_TTYNAME_R symbol,
?S:	which indicates to the C program that the ttyname_r()
?S:	routine is available.
?S:.
?S:ttyname_r_proto:
?S:	This variable encodes the prototype of ttyname_r.
?S:	It is zero if d_ttyname_r is undef, and one of the
?S:	REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
?S:	is defined.
?S:.
?C:HAS_TTYNAME_R:
?C:	This symbol, if defined, indicates that the ttyname_r routine
?C:	is available to ttyname re-entrantly.
?C:.
?C:TTYNAME_R_PROTO:
?C:	This symbol encodes the prototype of ttyname_r.
?C:	It is zero if d_ttyname_r is undef, and one of the
?C:	REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
?C:	is defined.
?C:.
?H:#$d_ttyname_r HAS_TTYNAME_R	   /**/
?H:#define TTYNAME_R_PROTO $ttyname_r_proto	   /**/
?H:.
?T:try hdrs d_ttyname_r_proto
: see if ttyname_r exists
set ttyname_r d_ttyname_r
eval $inlibc
case "$d_ttyname_r" in
"$define")
	hdrs="$i_systypes sys/types.h define stdio.h $i_unistd unistd.h"
	case "$d_ttyname_r_proto:$usethreads" in
	":define")	d_ttyname_r_proto=define
		set d_ttyname_r_proto ttyname_r $hdrs
		eval $hasproto ;;
	*)	;;
	esac
	case "$d_ttyname_r_proto" in
	define)
	case "$ttyname_r_proto" in
	''|0) try='int ttyname_r(int, char*, size_t);'
	./protochk "extern $try" $hdrs && ttyname_r_proto=I_IBW ;;
	esac
	case "$ttyname_r_proto" in
	''|0) try='int ttyname_r(int, char*, int);'
	./protochk "extern $try" $hdrs && ttyname_r_proto=I_IBI ;;
	esac
	case "$ttyname_r_proto" in
	''|0) try='char* ttyname_r(int, char*, int);'
	./protochk "extern $try" $hdrs && ttyname_r_proto=B_IBI ;;
	esac
	case "$ttyname_r_proto" in
	''|0)	d_ttyname_r=undef
 	        ttyname_r_proto=0
		echo "Disabling ttyname_r, cannot determine prototype." >&4 ;;
	* )	case "$ttyname_r_proto" in
		REENTRANT_PROTO*) ;;
		*) ttyname_r_proto="REENTRANT_PROTO_$ttyname_r_proto" ;;
		esac
		echo "Prototype: $try" ;;
	esac
	;;
	*)	case "$usethreads" in
		define) echo "ttyname_r has no prototype, not using it." >&4 ;;
		esac
		d_ttyname_r=undef
		ttyname_r_proto=0
		;;
	esac
	;;
*)	ttyname_r_proto=0
	;;
esac