Don't run/print install command when there's nothing to install.

git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.2@3110 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 6 insertions, 0 deletions

diff --git a/contrib/install_prereq b/contrib/install_prereq
index 56463b4..dac0189 100755
--- a/contrib/install_prereq
+++ b/contrib/install_prereq
@@ -64,6 +64,9 @@ handle_debian() {
 		esac
 		echo "# Kernel source not found. Installing $kernel_package"
 	fi
+	if [ "$extra_packs$kernel_package" = '' ]; then
+		return
+	fi
 	$testcmd apt-get install -y $extra_packs $kernel_package
 }
 
@@ -87,6 +90,9 @@ handle_rh() {
 		echo "#"
 		echo "# and then reboot to upgrade to the newly installed kernel."
 	fi
+	if [ "$extra_packs$kernel_package" = '' ]; then
+		return
+	fi
 	$testcmd yum install -y $extra_packs $kernel_package
 }