Ensure that PATCH and TAR are defined

git-svn-id: http://svn.cactuscode.org/projects/ExternalLibraries/libjpeg/trunk@21 ba58616d-3abc-4c77-8745-3ba8ad4a582f

1 files changed, 1 insertions, 1 deletions

diff --git a/configure.sh b/configure.sh
index c09ed73..aa1ff70 100755
--- a/configure.sh
+++ b/configure.sh
@@ -102,7 +102,7 @@ then
 
         echo "libjpeg: Unpacking archive..."
         pushd ${BUILD_DIR}
-        ${TAR} xzf ${SRCDIR}/dist/${NAME}.tar.gz
+        ${TAR?} xzf ${SRCDIR}/dist/${NAME}.tar.gz
 
         echo "libjpeg: Configuring..."
         cd ${NAME}