From 6600bf55782351284e2108a04438bc878e28bc5d Mon Sep 17 00:00:00 2001
From: Mark Lobodzinski <mark@lunarg.com>
Date: Tue, 22 Nov 2016 08:02:59 -0700
Subject: [PATCH] scripts: Improve paths in update_ext_resources.sh

Script was relying on $PWD for determining the current path which
is unreliable in some situations. Updated to a more robust method
allowing spaces in paths.

Change-Id: Ibdb780c479ad7fa831d113e445cc598830806806
---
 update_external_sources.sh | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/update_external_sources.sh b/update_external_sources.sh
index c20297a..a33c850 100755
--- a/update_external_sources.sh
+++ b/update_external_sources.sh
@@ -3,17 +3,18 @@
 
 set -e
 
-REVISION_DIR=$PWD/external_revisions
+CURRENT_DIR="$(dirname "$(readlink -f ${BASH_SOURCE[0]})")"
+REVISION_DIR="$CURRENT_DIR/external_revisions"
 
-GLSLANG_REVISION=$(cat ${REVISION_DIR}/glslang_revision)
-SPIRV_TOOLS_REVISION=$(cat "${REVISION_DIR}"/spirv-tools_revision)
-SPIRV_HEADERS_REVISION=$(cat "${REVISION_DIR}"/spirv-headers_revision)
+GLSLANG_REVISION=$(cat "${REVISION_DIR}/glslang_revision")
+SPIRV_TOOLS_REVISION=$(cat "${REVISION_DIR}/spirv-tools_revision")
+SPIRV_HEADERS_REVISION=$(cat "${REVISION_DIR}/spirv-headers_revision")
 echo "GLSLANG_REVISION=${GLSLANG_REVISION}"
 echo "SPIRV_TOOLS_REVISION=${SPIRV_TOOLS_REVISION}"
 echo "SPIRV_HEADERS_REVISION=${SPIRV_HEADERS_REVISION}"
 
-BUILDDIR=$PWD
-BASEDIR=$BUILDDIR/external
+BUILDDIR=${CURRENT_DIR}
+BASEDIR="$BUILDDIR/external"
 
 function create_glslang () {
    rm -rf "${BASEDIR}"/glslang
-- 
2.7.4