Add build script for continuous integration

The script is based on the build script for copper
https://git.opnfv.org/cgit/releng/tree/jjb/copper/docu-build.sh
The script should be run from the root of kvmfornfv source tree

Change-Id: Ic12890990741441e88e35a87ef2570b1c601ca61
Signed-off-by: David Su <david.w.su@intel.com>

diff --git a/ci/build.sh b/ci/build.sh
new file mode 100755 (executable)
index 0000000..d27b353
--- /dev/null
+++ b/ci/build.sh
@@ -0,0 +1,50 @@
+#!/bin/bash
+kernel_src_dir=kernel
+rpmbuild_dir=/tmp/kvmfornfv_rpmbuild.$$
+artifact_dir=${rpmbuild_dir}/RPMS/x86_64
+config_file="${kernel_src_dir}/arch/x86/configs/opnfv.config"
+output_dir="$1"
+
+usage () {
+    echo "usage: ${0} output_dir"
+    exit 1
+}
+
+if [[ -z "$@" ]]; then
+    usage
+fi
+
+if [ ! -d ${output_dir} -o ! -w ${output_dir} ] ; then
+    echo "${0}: Output directory '${output_dir}' does not exist or cannot be written"
+    exit 1
+fi
+
+if [ ! -d ${kernel_src_dir} ] ; then
+    echo "${0}: Directory '${kernel_src_dir}' does not exist, run this script from the root of kvmfornfv source tree"
+    exit 1
+fi
+
+if [ ! -f ${config_file} ] ; then
+    echo "${0}: ${config_file} does not exist"
+    exit 1
+fi
+
+echo
+echo "Build"
+echo
+
+cp -f ${config_file} "${kernel_src_dir}/.config"
+
+# Make timestamp part of version string for automated kernel boot verification
+date "+-%y%m%d%H%M" > "${kernel_src_dir}/localversion-zzz"
+
+( cd ${kernel_src_dir}; make RPMOPTS="--define '_topdir ${rpmbuild_dir}'" rpm-pkg )
+if [ ${?} -ne 0 ] ; then
+    echo "${0}: Kernel build failed"
+    rm -rf ${rpmbuild_dir}
+    exit 1
+fi
+
+cp -f ${artifact_dir}/* ${output_dir}
+
+rm -rf ${rpmbuild_dir}