File setup-deal-with-ExclusiveArch.patch of Package quilt

From: Jean Delvare <jdelvare@suse.de>
Subject: Let quilt setup deal with ExclusiveArch
References: boo#1238516

If the spec file includes an ExclusiveArch statement and the local
architecture isn't part of the list, rpmbuild will fail. Check for
the presence of this statement before calling rpmbuild, and if it
would fail, pass option --target to set the architecture to a
supported one.
---
 quilt/setup.in |   35 ++++++++++++++++++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

--- a/quilt/setup.in
+++ b/quilt/setup.in
@@ -270,6 +270,7 @@ inspect()
 		 --define "__unzip    $tmpdir/bin/unzip" \
 		 --define "__7zip     $tmpdir/bin/7z" \
 		 "${DEFINE_FUZZ[@]}" \
+		 "${FORCE_ARCH[@]}" \
 		 --nodeps \
 		 -bp "$specdir/$specfile" < /dev/null >&5 2>&5
 	status=$?
@@ -343,7 +344,36 @@ eval set -- "$options"
 export QUILT_SETUP_FAST=1
 prefix=
 sourcedir=
-declare -a DEFINE_FUZZ
+declare -a DEFINE_FUZZ FORCE_ARCH
+
+# Sets FORCE_ARCH if needed
+check_exclusivearch()
+{
+	local spec_file=$1 our_arch a
+	local -a archs
+
+	archs=( $(sed -ne 's/^ExclusiveArch:[[:space:]]*\(.*\)$/\1/p' "$spec_file") )
+	if [ ${#archs[@]} -eq 0 ]
+	then
+		return
+	fi
+
+	# ExclusiveArch statement is present
+	our_arch=$(arch 2>/dev/null)
+	for a in "${archs[@]}"
+	do
+		if [ "$a" == "$our_arch" ]
+		then
+			# We are in the list, so no problem
+			return
+		fi
+	done
+
+	# We are not in the exclusive arch list. Force the target to the
+	# first listed architecture to make rpmbuild happy.
+
+	FORCE_ARCH=( "--target" "${archs[0]}" )
+}
 
 while true
 do
@@ -417,6 +447,9 @@ case "$1" in
 	# check if rpmbuild is installed before running inspect
 	check_external_tool rpmbuild rpm-build
 
+	# check if ExclusiveArch statement would block rpmbuild
+	check_exclusivearch "$spec_file"
+
 	if [ -n "$QUILT_SETUP_FAST" ]
 	then
 		if [ "${prefix:0:1}" = / ]