Add -block option to aws_build_dcp_from_cl.sh

-block option doesn't nohup the vivado build so that the script
doesn't exit until the build is complete.
This makes it easier to call the script from another script and get
the return code.

Default behavior hasn't changed.

Author: cartalla

hdk/cl/examples/.gitignore

@@ -3,6 +3,7 @@
 */build/bitstreams/*.log
 */build/bitstreams/*.bin
 *.bin
+*/build/checkpoints
 */build/checkpoints/*.dcp
 */build/reports/*.rpt
 */build/reports/*.txt

hdk/common/shell_current/build/scripts/aws_build_dcp_from_cl.sh

@@ -18,12 +18,13 @@
 # Usage help
 function usage
 {
-    echo "usage: aws_build_dcp_from_cl.sh [ [-script <vivado_script>] | [-strategy BASIC | DEFAULT | EXPLORE | TIMING | CONGESTION] | [-h] | [-H] | [-help] |  ]"
+    echo "usage: aws_build_dcp_from_cl.sh [ [-script <vivado_script>] | [-strategy BASIC | DEFAULT | EXPLORE | TIMING | CONGESTION] [-block] | [-h] | [-H] | [-help] |  ]"
 }
 
 # Default arguments for script and strategy
 strategy=DEFAULT
 vivado_script="create_dcp_from_cl.tcl"
+block=0
 
 # Parse command-line arguments
 while [ "$1" != "" ]; do
@@ -34,6 +35,8 @@ while [ "$1" != "" ]; do
         -strategy )             shift
                                 strategy=$1
                                 ;;
+        -block )                block=1
+                                ;;
         -h | -H | -help )       usage
                                 exit
                                 ;;
@@ -94,8 +97,12 @@ echo "AWS FPGA: Environment variables and directories are present. Checking for
 vivado -version >/dev/null 2>&1 || { echo >&2 "ERROR - Please install/enable Vivado." ; return 1; }
 
 # Run vivado
-nohup vivado -mode batch -nojournal -log $logname -source $vivado_script -tclargs $timestamp $strategy > $timestamp.nohup.out 2>&1&
-
-echo "AWS FPGA: Build through Vivado is running as background process, this may take few hours."
-echo "AWS FPGA: You can set up an email notification upon Vivado run finish by following the instructions in TBD"
-
+cmd="vivado -mode batch -nojournal -log $logname -source $vivado_script -tclargs $timestamp $strategy"
+if [[ "$block" == "0" ]]; then
+  nohup $cmd > $timestamp.nohup.out 2>&1 &
+  
+  echo "AWS FPGA: Build through Vivado is running as background process, this may take few hours."
+  echo "AWS FPGA: You can set up an email notification upon Vivado run finish by following the instructions in TBD"
+else
+  $cmd
+fi