[ptxdist] [PATCH v3 1/2] ptxdist: introduce the "clean target" subcommand

[Roland Hieber <rhi@pengutronix.de>]

Signed-off-by: Roland Hieber <rhi@pengutronix.de>
---
v2 -> v3:
 more elegant solution using "set -- root" instead of a variable
 patch 2/2 stays the same as in v2.
---
 bin/ptxdist           | 16 ++++++++++++++++
 doc/ref_parameter.inc |  6 ++++++
 2 files changed, 22 insertions(+)

diff --git a/bin/ptxdist b/bin/ptxdist
index 03d6a37ffbba..1a8e02192669 100755
--- a/bin/ptxdist
+++ b/bin/ptxdist
@@ -967,6 +967,7 @@ Clean Actions:
 
   clean				cleanup build-host and build-cross dirs
   clean root			cleanup root directory for target
+  clean target			cleanup all target packages
   distclean			cleanup everything
 
 Misc:
@@ -1041,6 +1042,21 @@ EOF
 clean() {
 	local dir bdir
 
+	# we want to clean all target packages
+	if [ "${1}" = "target" ]; then
+		if [ ! -n "${PTXDIST_FORCE}${PTXDIST_QUIET}${PTXCONF_SETUP_DIRECT_CLEAN}" ]; then
+			read -e -p "really clean all target packages? [y/N] " r
+			case "${r}" in
+				y|Y) ;;
+				*) exit 1 ;;
+			esac
+		fi
+		check_premake_compiler &&
+		pkgs=($(ptxd_make "/print-PACKAGES /print-EXTRA_PACKAGES /print-LAZY_PACKAGES")) &&
+		ptxd_make_log "${pkgs[@]/%/_clean}"
+		set -- root
+	fi
+
 	# we want to clean the root dir
 	if [ "${1}" = "root" ]; then
 		echo
diff --git a/doc/ref_parameter.inc b/doc/ref_parameter.inc
index 0b11563c9ffd..4aecb04713d7 100644
--- a/doc/ref_parameter.inc
+++ b/doc/ref_parameter.inc
@@ -162,6 +162,12 @@ Clean Actions
   The ``clean root`` and ``go`` action is useful if the
   *targetinstall* stage for all packages should run again.
 
+``clean target``
+  this action will call the ``clean`` action for each target package,
+  and also clean the root file system afterwards.
+  This can be useful if you want to rebuild the target file system from
+  scratch, without throwing away the already built host and cross packages.
+
 ``clean <package>``
   this action will only clean the dedicated
   <package>. It will remove its build directory and all installed files
-- 
2.20.1


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