xargs(1) on Interix is broken. It executes the utility on the command line

even if standard input is the empty string. Install a wrapper script
bundled with pkgtools/bootstrap-extras to deal with this. This is an
attempt at a permanent workaround for the problem described in PR pkg/25777
which has regressed since it was initially fixed.

We can now bootstrap again on Interix 3.5.

bootstrap/bootstrap

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# $NetBSD: bootstrap,v 1.98 2007/05/30 01:42:59 schmonz Exp $
+# $NetBSD: bootstrap,v 1.99 2007/07/01 23:27:43 tnn Exp $
 #
 #
 # Copyright (c) 2001-2002 Alistair G. Crooks.  All rights reserved.
@@ -489,6 +489,7 @@ Interix)
 	need_awk=yes
 	need_sed=yes
 	set_opsys=no
+	need_xargs=yes
 	# only used for unprivileged builds
 	groupsprog="id -gn"
 	# for bootstrap only; pkgsrc uses CPPFLAGS
@@ -771,6 +772,13 @@ if [ "$need_mkdir" = "yes" -a -z "$MKDIR" ]; then
 	need_extras=yes
 fi
 
+if [ "$need_xargs" = "yes" ]; then
+	echo_msg "Installing fixed xargs script"
+	run_cmd "$install_sh -c -o $user -g $group -m 755 $pkgsrcdir/pkgtools/bootstrap-extras/files/xargs-sh $prefix/bin/xargs"
+	echo "TOOLS_PLATFORM.xargs?=		$prefix/bin/xargs" >> ${MKCONF_EXAMPLE}
+	need_extras=yes
+fi
+
 echo_msg "Installing bmake"
 copy_src $pkgsrcdir/devel/bmake/files bmake
 run_cmd "(cd $wrkdir/bmake && env CPPFLAGS='$CPPFLAGS -I../../libnbcompat' LDFLAGS='$LDFLAGS -L../../libnbcompat' LIBS='-lnbcompat' $bmakexenv $shprog ./boot-strap $configure_quiet_flags -q -o $opsys --prefix=$prefix --sysconfdir=$sysconfdir --mksrc none --with-default-sys-path="$prefix/share/mk" $bmakexargs)"

pkgtools/bootstrap-extras/Makefile

@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.2 2006/08/24 17:46:53 wiz Exp $
+# $NetBSD: Makefile,v 1.3 2007/07/01 23:27:43 tnn Exp $
 
-DISTNAME=	bootstrap-extra-files-20060824
+DISTNAME=	bootstrap-extra-files-20070202
 CATEGORIES=	pkgtools
 MASTER_SITES=	# empty
 DISTFILES=	# empty
@@ -30,6 +30,11 @@ NEED_STRIP.AIX=		# empty
 NEED_STRIP.*=		"@comment "
 PLIST_SUBST+=		NEED_STRIP=${NEED_STRIP}
 
+OPSYSVARS+=		NEED_XARGS
+NEED_XARGS.Interix=	# empty
+NEED_XARGS.*=		"@comment "
+PLIST_SUBST+=		NEED_XARGS=${NEED_XARGS}
+
 do-extract:
 	${CP} -R ${FILESDIR} ${WRKSRC}
 
@@ -49,5 +54,10 @@ do-install:
 		${INSTALL_SCRIPT} ${WRKSRC}/strip-sh			\
 			${PREFIX}/bin/strip;				\
 	fi
+	if ${TEST} -z ${NEED_XARGS:M*:Q}""; then			\
+		${INSTALL_SCRIPT_DIR} ${PREFIX}/bin;			\
+		${INSTALL_SCRIPT} ${WRKSRC}/xargs-sh			\
+			${PREFIX}/bin/xargs;				\
+	fi
 
 .include "../../mk/bsd.pkg.mk"

pkgtools/bootstrap-extras/PLIST

@@ -1,4 +1,5 @@
-@comment $NetBSD: PLIST,v 1.1.1.1 2006/07/17 14:21:31 jlam Exp $
+@comment $NetBSD: PLIST,v 1.2 2007/07/01 23:27:43 tnn Exp $
 ${NEED_MKDIR}bin/mkdir-sh
 ${NEED_STRIP}bin/strip
 ${NEED_FAKELDD}sbin/fakeldd
+${NEED_XARGS}bin/xargs

pkgtools/bootstrap-extras/files/xargs-sh

@@ -0,0 +1,13 @@
+#! /bin/sh
+#
+# $NetBSD: xargs-sh,v 1.1 2007/07/01 23:27:43 tnn Exp $
+#
+# xargs(1) on Interix is broken. It executes the utility on the command line
+# even if standard input is the empty string.
+
+d="`/bin/cat`"
+if [ "$d" != "" ]
+then
+echo "$d" | /bin/xargs $@
+exit $?
+fi