scripts: add help for build testing

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>

diff --git a/scripts/test-build.sh b/scripts/test-build.sh
index 6e67c8f..6d28c5d 100755 (executable)
--- a/scripts/test-build.sh
+++ b/scripts/test-build.sh
@@ -40,7 +40,25 @@
 . scripts/load-devel-config.sh
 
 print_usage () {
-       echo "usage: $(basename $0) [-jX] [-s] [config1 [config2] ...]]"
+       echo "usage: $(basename $0) [-h] [-jX] [-s] [config1 [config2] ...]]"
+}
+
+print_help () {
+       echo 'Test building several targets with different options'
+       echo
+       print_usage
+       cat <<- END_OF_HELP
+
+       options:
+               -h    this help
+               -jX   use X parallel jobs in "make"
+               -s    short test with only first config without examples/doc
+
+       config: defconfig name followed by switches delimited with "+" sign
+               Example: x86_64-native-linuxapp-gcc+next+shared+combined
+               Default is to enable most of the options.
+               The external dependencies are setup with DPDK_DEP_* variables.
+       END_OF_HELP
 }
 
 J=$DPDK_MAKE_JOBS
@@ -49,7 +67,7 @@ while getopts hj:s ARG ; do
        case $ARG in
                j ) J=$OPTARG ;;
                s ) short=true ;;
-               h ) print_usage ; exit 0 ;;
+               h ) print_help ; exit 0 ;;
                ? ) print_usage ; exit 1 ;;
        esac
 done