From 7257c56a81c81020513925721a97fa8731730e53 Mon Sep 17 00:00:00 2001
From: Michael Roth <michael.roth@amd.com>
Date: Wed, 9 Feb 2022 18:33:35 -0600
Subject: build.sh: document --package

Also allow users to select a specific type of kernel packages to build
via:

  build.sh --package kernel
  build.sh --package kernel host
  build.sh --package kernel guest
---
 build.sh  | 11 +++++++----
 common.sh |  9 +++++++++
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/build.sh b/build.sh
index c0d40d3..25928cb 100755
--- a/build.sh
+++ b/build.sh
@@ -11,8 +11,10 @@ function usage()
 	echo "  where COMPONENT is an individual component to build:"
 	echo "    qemu, ovmf, kernel"
 	echo "  where OPTIONS are:"
-	echo "  --install PATH   Installation path (default $INSTALL_DIR)"
-	echo "  -h|--help        Usage information"
+	echo "  --install PATH                Installation path (default $INSTALL_DIR)"
+	echo "  --package [qemu|ovmf|[kernel [host|guest]]"
+	echo "                                Build packages (default is all of them)"
+	echo "  -h|--help                     Usage information"
 
 	exit 1
 }
@@ -54,7 +56,7 @@ INSTALL_DIR=$(readlink -e $INSTALL_DIR)
 if [ -z "$1" ]; then
 	build_install_qemu "$INSTALL_DIR"
 	build_install_ovmf "$INSTALL_DIR/share/qemu"
-	build_kernel
+	build_kernel $2
 else
 	case "$1" in
 	qemu)
@@ -64,7 +66,8 @@ else
 		build_install_ovmf "$INSTALL_DIR/share/qemu"
 		;;
 	kernel)
-		build_kernel
+		# additional argument of "host" or "guest" can be added to limit build to that type
+		build_kernel $2
 		;;
 	esac
 fi
diff --git a/common.sh b/common.sh
index 6cb297e..9583710 100755
--- a/common.sh
+++ b/common.sh
@@ -13,10 +13,19 @@ run_cmd()
 build_kernel()
 {
 	set -x
+	kernel_type=$1
+	shift
 	mkdir -p linux
 	pushd linux >/dev/null
 
 	for V in guest host; do
+		# Check if only a "guest" or "host" or kernel build is requested
+		if [ "$kernel_type" != "" ]; then
+			if [ "$kernel_type" != "$V" ]; then
+				continue
+			fi
+		fi
+
 		[ -d ${V} ] || {
 			if [ "${V}" = "guest" ]; then
 				BRANCH="${KERNEL_GUEST_BRANCH}"
-- 
cgit v1.2.3-71-gd317