Teach the build scripts how to skip building artifacts

Performing full builds during development of these scripts can chew up a
large chunk of time. Given that the process of building the artifacts
takes the majority of the time, but don't change much, provide a -S
option to skip building the artifacts. Uppercase is used as an
additional measure to prevent footshooting.
Signed-off-by: Shawn Webb <shawn.webb@hardenedbsd.org>
github-issue:	#8

bin/ci.sh

@@ -77,7 +77,7 @@ main() {
 
 	config_set_defaults
 
-	while getopts 'c:f' o; do
+	while getopts 'c:Sf' o; do
 		case "${o}" in
 			c)
 				. ${OPTARG}
@@ -85,6 +85,9 @@ main() {
 			f)
 				forcebuild=1
 				;;
+			S)
+				skip_build
+				;;
 		esac
 	done
 

lib/build.sh

@@ -24,7 +24,15 @@
 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 # SUCH DAMAGE.
 
+_skip_build=0
+
+skip_build() {
+	_skip_build=1
+}
+
 clean_build() {
+	[ ${_skip_build} -gt 0 ] && return 0
+
 	(
 		set -ex
 
@@ -39,6 +47,8 @@ clean_build() {
 }
 
 build_hardenedbsd() {
+	[ ${_skip_build} -gt 0 ] && return 0
+
 	(
 		set -ex
 
@@ -61,6 +71,8 @@ build_hardenedbsd() {
 }
 
 build_release() {
+	[ ${_skip_build} -gt 0 ] && return 0
+
 	(
 		set -ex