ptxd_make_world_package_info: improve rev config handling when layers are involved

If a config is found in a base layer then this is used to calculate the
diff. So the ref config is only used if no lower layer has a config.

Improve the package-info output to take this into account:
 - print the ref config only if it is actually used
 - otherwise print the used base config from a lower layer

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>

2 files changed, 24 insertions, 3 deletions

diff --git a/scripts/lib/ptxd_make_world_kconfig.sh b/scripts/lib/ptxd_make_world_kconfig.sh
index 520051916..0aea53168 100644
--- a/scripts/lib/ptxd_make_world_kconfig.sh
+++ b/scripts/lib/ptxd_make_world_kconfig.sh
@@ -16,12 +16,17 @@ ptxd_make_world_kconfig_mode() {
 }
 export -f ptxd_make_world_kconfig_mode
 
-ptxd_make_kconfig_setup() {
+ptxd_make_kconfig_init() {
     if [ -n "${ref_file_dotconfig}" ]; then
 	file_dotconfig="${ref_file_dotconfig}" ptxd_normalize_config &&
 	relative_ref_file_dotconfig="${relative_file_dotconfig}"
     fi &&
-    ptxd_normalize_config &&
+    ptxd_normalize_config
+}
+export -f ptxd_make_kconfig_init
+
+ptxd_make_kconfig_setup() {
+    ptxd_make_kconfig_init &&
     ptxd_kconfig_setup_config "${ptx_config_mode}" "${pkg_build_dir}/.config" \
 	"${relative_file_dotconfig}" "${file_dotconfig}" "${relative_ref_file_dotconfig}"
     if [ ${?} -ne 0 ]; then
diff --git a/scripts/lib/ptxd_make_world_package_info.sh b/scripts/lib/ptxd_make_world_package_info.sh
index 4d17f3d2c..48b7b21da 100644
--- a/scripts/lib/ptxd_make_world_package_info.sh
+++ b/scripts/lib/ptxd_make_world_package_info.sh
@@ -7,6 +7,8 @@
 #
 
 ptxd_make_world_package_info() {
+    local last_config base_config ref_config
+
     # use patchin_init for  pkg_patch_dir
     ptxd_make_world_patchin_init || return
     do_echo() {
@@ -26,8 +28,22 @@ ptxd_make_world_package_info() {
     do_echo "image:" "$(ptxd_print_path "${image_image}")"
     echo
 
+    if [ -n "${pkg_config}" ]; then
+	local file_dotconfig="${pkg_config}"
+	local ref_file_dotconfig="${pkg_ref_config}"
+	ptxd_make_kconfig_init
+	ptxd_kconfig_find_config "update" "${relative_file_dotconfig}" "${relative_ref_file_dotconfig}"
+	if [ "${base_config}" = "${pkg_ref_config}" ]; then
+	    base_config=
+	fi
+	if [ -z "${base_config}" ]; then
+	    ref_config="${pkg_ref_config}"
+	fi
+    fi
+
     do_echo "config:" "$(ptxd_print_path "${pkg_config}")"
-    do_echo "ref config:" "$(ptxd_print_path "${pkg_ref_config}")"
+    do_echo "base config:" "$(ptxd_print_path "${base_config}")"
+    do_echo "ref config:" "$(ptxd_print_path "${ref_config}")"
     do_echo "${pkg_config}"
 
     do_echo "license:" "${pkg_license}"