From 39d444a339c3605e30d7d8afe671b48cb4365479 Mon Sep 17 00:00:00 2001
From: Arvind S Raj <sraj.arvind@gmail.com>
Date: Sat, 26 Apr 2014 20:55:25 +0530
Subject: [PATCH] Abort configure script if haikuports, haikuports cross and
 haikuporter directories do not exist.

Signed-off-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>
---
 configure | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/configure b/configure
index 20f7e14351..4dca26fcd6 100755
--- a/configure
+++ b/configure
@@ -2,6 +2,9 @@
 #
 # configure [ <options> ]
 
+# set flag to exit script when exit command is executed
+set -e
+
 # usage
 #
 # Prints usage.
@@ -183,6 +186,19 @@ absolute_path()
 	fi
 }
 
+# check_dir_exists
+#
+# check if a directory exists or not
+#
+check_dir_exists()
+{
+	if [ -d "$1" ]; then
+		return 0
+	else
+		return 1
+	fi
+}
+
 # real_path
 #
 # returns the realpath of a symbolic link.
@@ -570,6 +586,18 @@ while [ $# -gt 0 ] ; do
 			HOST_HAIKU_PORTER="`absolute_path $2`"
 			HAIKU_PORTS_CROSS="`absolute_path $3`"
 			HAIKU_PORTS="`absolute_path $4`"
+			check_dir_exists "$HOST_HAIKU_PORTER" || (
+				echo "Non-existent directory $HOST_HAIKU_PORTER" >&2
+				exit 1
+			)
+			check_dir_exists "$HAIKU_PORTS" || (
+				echo "Non-existent directory $HAIKU_PORTS" >&2
+				exit 1
+			)
+			check_dir_exists "$HAIKU_PORTS_CROSS" || (
+				echo "Non-existent directory $HAIKU_PORTS_CROSS" >&2
+				exit 1
+			)
 			shift 4
 			;;
 		--build-cross-tools)