1 files changed, 48 insertions, 0 deletions
diff --git a/mesalib/bin/confdiff.sh b/mesalib/bin/confdiff.sh
new file mode 100644
index 000000000..43df914f3
--- /dev/null
+++ b/mesalib/bin/confdiff.sh
@@ -0,0 +1,48 @@
+#!/bin/bash -e
+
+usage()
+{
+	echo "Usage: $0 <target1> <target2>"
+	echo "Highlight differences between Mesa configs"
+	echo "Example:"
+	echo "  $0 linux linux-x86"
+}
+
+die()
+{
+	echo "$@" >&2
+	return 1
+}
+
+case "$1" in
+-h|--help) usage; exit 0;;
+esac
+
+[ $# -lt 2 ] && die 2 targets needed. See $0 --help
+target1=$1
+target2=$2
+
+topdir=$(cd "`dirname $0`"/..; pwd)
+cd "$topdir"
+
+[ -f "./configs/$target1" ] || die Missing configs/$target1
+[ -f "./configs/$target2" ] || die Missing configs/$target2
+
+trap 'rm -f "$t1" "$t2"' 0
+
+t1=$(mktemp)
+t2=$(mktemp)
+
+make -f- -n -p <<EOF | sed '/^# Not a target/,/^$/d' > $t1
+TOP = .
+include \$(TOP)/configs/$target1
+default:
+EOF
+
+make -f- -n -p <<EOF | sed '/^# Not a target/,/^$/d' > $t2
+TOP = .
+include \$(TOP)/configs/$target2
+default:
+EOF
+
+diff -pu -I'^#' $t1 $t2