From 15a0f41dd37c2147d2dd5da14eb3707fdeb22855 Mon Sep 17 00:00:00 2001
From: Raimo Niskanen <raimo@erlang.org>
Date: Thu, 10 Nov 2011 10:16:18 +0100
Subject: Cleanup the use of TARGET in toplevel and common make and build files

Common file target.mk now passes the TARGET value through config.sub
for canonification.

Toplevel Makefile now calls target.mk so it handles TARGET like
all sub-makefiles.

Build script otp_build no longer creates a target specific directory
that a long time ago was used for target specific configure cache file.
---
 Makefile.in    |  4 +++-
 make/target.mk | 36 ++++++++++++++++++++++++++++++++++++
 otp_build      | 12 ------------
 3 files changed, 39 insertions(+), 13 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index 9ac516ca33..902c21fb52 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -158,7 +158,9 @@ ERLANG_LIBDIR     = $(DESTDIR)$(ERLANG_INST_LIBDIR)
 MAKE		= @MAKE_PROG@
 
 # This should be set to the target "arch-vendor-os"
-export TARGET	= @TARGET@
+TARGET	:= @TARGET@
+include $(ERL_TOP)/make/target.mk
+export TARGET
 
 BOOTSTRAP_ONLY = @BOOTSTRAP_ONLY@
 
diff --git a/make/target.mk b/make/target.mk
index 06e895df90..a6493e09a5 100644
--- a/make/target.mk
+++ b/make/target.mk
@@ -1,3 +1,24 @@
+#
+# %CopyrightBegin%
+#
+# Copyright Ericsson AB 1998-2011. All Rights Reserved.
+#
+# The contents of this file are subject to the Erlang Public License,
+# Version 1.1, (the "License"); you may not use this file except in
+# compliance with the License. You should have received a copy of the
+# Erlang Public License along with this software. If not, it can be
+# retrieved online at http://www.erlang.org/.
+#
+# Software distributed under the License is distributed on an "AS IS"
+# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+# the License for the specific language governing rights and limitations
+# under the License.
+#
+# %CopyrightEnd%
+
+# Ensure that the make variable TARGET is set
+#
+
 ifeq ($(OVERRIDE_TARGET),)
 
 ifeq ($(TARGET),)
@@ -31,3 +52,18 @@ endif
 
 endif
 
+ifneq ($(TARGET),)
+ifneq ($(TARGET),win32)
+ifneq ($(TARGET),vxworks)
+override TARGET := $(shell $(ERL_TOP)/erts/autoconf/config.sub $(TARGET))
+else
+endif
+else
+endif
+else
+endif
+
+ifeq ($(TARGET),)
+$(error Neither TARGET nor OVERRIDE_TARGET can be determined!)
+else
+endif
diff --git a/otp_build b/otp_build
index 44bbab22b5..76f1d20ff7 100755
--- a/otp_build
+++ b/otp_build
@@ -324,16 +324,6 @@ do_autoconf ()
 	fi
 }
 
-mk_targetdir ()
-{
-    if [ ! -d $ERL_TOP/$TARGET ]; then
-	echo "creating  $ERL_TOP/$TARGET"
-	mkdir $ERL_TOP/$TARGET
-    else
-	echo "existing $ERL_TOP/$TARGET is used"
-    fi
-}
-
 run_configure ()
 {
     cdir="$ERL_TOP"
@@ -499,7 +489,6 @@ maybe_copy_static_cache ()
 do_configure ()
 {
     setup_make
-    mk_targetdir
 
     # Get `erl_build_tool_vars'
     . "$ERL_TOP/erl-build-tool-vars.sh" || exit 1
@@ -513,7 +502,6 @@ do_configure ()
 		  hide_vars OVERRIDE_TARGET TARGET
 		  TARGET=$BUILDSYS
 		  export TARGET
-		  mk_targetdir
 		  set_config_flags "$@"
 		  run_configure "$@"
 		  restore_vars OVERRIDE_TARGET TARGET;;
-- 
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