[src/trunk]: src MACHINE_ARCH from the environment may be overridden by getar...

[apb <apb%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a2538889c0b1
branches:  trunk
changeset: 798053:a2538889c0b1
user:      apb <apb%NetBSD.org@localhost>
date:      Thu Aug 07 18:10:20 2014 +0000

description:
MACHINE_ARCH from the environment may be overridden by getarch (based
on the MACHINE), but MACHINE_ARCH from the -a option should not be
overridden.  The previous commit accidentally removed this behaviour.

diffstat:

 build.sh |  14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)

diffs (55 lines):

diff -r f1d2cff87600 -r a2538889c0b1 build.sh
--- a/build.sh  Thu Aug 07 17:54:28 2014 +0000
+++ b/build.sh  Thu Aug 07 18:10:20 2014 +0000
@@ -1,5 +1,5 @@
 #! /usr/bin/env sh
-#      $NetBSD: build.sh,v 1.292 2014/08/07 17:54:28 apb Exp $
+#      $NetBSD: build.sh,v 1.293 2014/08/07 18:10:20 apb Exp $
 #
 # Copyright (c) 2001-2011 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -1097,7 +1097,7 @@
 parseoptions()
 {
        opts='a:B:C:D:Ehj:M:m:N:nO:oR:rS:T:UuV:w:X:xY:yZ:'
-       opt_a=no
+       opt_a=false
 
        if type getopts >/dev/null 2>&1; then
                # Use POSIX getopts.
@@ -1128,7 +1128,7 @@
                -a)
                        eval ${optargcmd}
                        MACHINE_ARCH=${OPTARG}
-                       opt_a=yes
+                       opt_a=true
                        ;;
 
                -B)
@@ -1370,12 +1370,16 @@
 
        # Set up MACHINE*.  On a NetBSD host, these are allowed to be unset.
        #
+       # MACHINE_ARCH from the environment may be overridden by getarch
+       # (based on the MACHINE), but MACHINE_ARCH from the -a option should
+       # not be overridden.
+       #
        if [ -z "${MACHINE}" ]; then
                [ "${uname_s}" = "NetBSD" ] ||
                    bomb "MACHINE must be set, or -m must be used, for cross builds."
                MACHINE=${uname_m}
        fi
-       [ -n "${MACHINE_ARCH}" ] || getarch
+       $opt_a || getarch
        validatearch
 
        # Set up default make(1) environment.
@@ -1858,7 +1862,7 @@
        eval cat <<EOF ${makewrapout}
 #! ${HOST_SH}
 # Set proper variables to allow easy "make" building of a NetBSD subtree.
-# Generated from:  \$NetBSD: build.sh,v 1.292 2014/08/07 17:54:28 apb Exp $
+# Generated from:  \$NetBSD: build.sh,v 1.293 2014/08/07 18:10:20 apb Exp $
 # with these arguments: ${_args}
 #