tools: simplify PYTHON_PATH computation (and fixes for NetBSD)

Doesn't work when build-time python path differs from install-time. Do
we care about this given tools should be packaged/built for the
specific run-time distro?

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>

tools/Rules.mk

@@ -49,8 +49,8 @@ check-$(CONFIG_X86) = $(call cc-ver-check,CC,0x030400,\
                         "Xen requires at least gcc-3.4")
 $(eval $(check-y))
 
-DEFAULT_PYTHON_PATH := $(shell $(XEN_ROOT)/tools/python/get-path)
-PYTHON_PATH ?= $(DEFAULT_PYTHON_PATH)
+_PYTHON_PATH := $(shell which $(PYTHON))
+PYTHON_PATH ?= $(_PYTHON_PATH)
 INSTALL_PYTHON_PROG = \
 	$(XEN_ROOT)/tools/python/install-wrap "$(PYTHON_PATH)" $(INSTALL_PROG)
 

tools/python/get-path

@@ -1,22 +0,0 @@
-#! /usr/bin/env bash
-set -e
-
-check () {
-	set +e
-	p=`type -p python$v`
-	r=$?
-	set -e
-	if [ $r = 0 ]; then
-		echo >&2 "${0##*/}: will use #!$p for python programs"
-		printf "%s\n" "$p"
-		exit 0
-	fi
-}
-
-v="$(python -V 2>&1)"
-v="${v#* }"
-check
-v="${v%.*}"
-check
-echo >&2 'python version not determined, will use env to find python at runtime'
-printf "/usr/bin/env python\n"

tools/python/install-wrap

@@ -1,44 +1,60 @@
-#! /usr/bin/env bash
+#!/bin/sh
 # usage:
 #  .../install-wrap $(PYTHON_PATH) install <options-to-install> <src>... <dest>
 # where
 #  PYTHON_PATH is what to put after #! and may be `/usr/bin/env python'
 #
-# Used via $(INSTALL_PYTHON_PROG) in Rules.mk; PYTHON_PATH comes from
-# .../get-path alongside this script
+# Used via $(INSTALL_PYTHON_PROG) in Rules.mk; PYTHON_PATH comes from $(PYTHON)
 
 set -e
-if [ $# -lt 2 ]; then echo >&2 "${0##*/}: too few arguments"; exit 1; fi
-pythonpath="$1"; shift
+if test $# -lt 2; then
+	echo >&2 "${0##*/}: too few arguments"
+	exit 1
+fi
 
-install=("$1"); shift
-srcs=()
+pythonpath="$1"
+shift
+
+install="$1"
+shift
+srcs=""
 
 while [ $# != 0 ]; do
 	case "$1" in
-	-|--)	install=("${install[@]}" "$1"); shift; break ;;
-	-*)	install=("${install[@]}" "$1"); shift ;;
-	*)	break ;;
+	-|--)	install=`echo "${install} $1"`
+		shift
+		break
+		;;
+	-*)	install=`echo "${install} $1"`
+		shift
+		;;
+	*)	break
+		;;
 	esac
 done
-while [ $# -gt 1 ]; do
-	srcs=("${srcs[@]}" "$1"); shift
+
+while test $# -gt 1; do
+	srcs=`echo "${srcs} $1"`
+	shift
 done
-dest="$1"; shift
+
+dest="$1"
+shift
 
 destf="$dest"
-for srcf in "${srcs[@]}"; do
+for srcf in ${srcs}; do
 	if test -d "$dest"; then
-		destf="$dest/${srcf%%*/}";
+		destf="$dest/${srcf%%*/}"
 	fi
 	org="$(sed -n '2q; /^#! *\/usr\/bin\/env python *$/p' $srcf)"
-	if [ "x$org" = x ]; then
-		"${install[@]}" "$srcf" "$destf"
+	if test "x$org" = x; then
+		eval "${install} $srcf $destf"
 		continue
 	fi
 	tmpf="$destf.tmp"
-	"${install[@]}" "$srcf" "$tmpf"
+	eval "${install} $srcf $tmpf"
 	printf >"$tmpf" "#!%s\n" "$pythonpath"
 	sed -e 1d "$srcf" >>"$tmpf"
 	mv -f "$tmpf" "$destf"
 done
+exit 0