[OE-core][PATCH] populate_sdk_base: remove useless dirs such as /dev

[OE-core][PATCH] populate_sdk_base: remove useless dirs such as /dev

[Chen Qi]

We met a problem that core-image-tiny-initramfs's SDK cannot be
installed. The error message is like below.

  tar: ./sysroots/core2-64-poky-linux/dev/console: Cannot mknod: Operation not permitted

In fact, the '/dev' direcotry is useless for SDK. So remove it.

This patches uses a variable, SDK_USELESS_DIRS, to hold useless dir entries
so that it could be extended. For example, '/usr/bin' could be added if wanted.

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
---
 meta/classes/populate_sdk_base.bbclass | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/meta/classes/populate_sdk_base.bbclass b/meta/classes/populate_sdk_base.bbclass
index fafdd96749..d4065b9b13 100644
--- a/meta/classes/populate_sdk_base.bbclass
+++ b/meta/classes/populate_sdk_base.bbclass
@@ -92,6 +92,8 @@ SDK_HOST_MANIFEST = "${SDKDEPLOYDIR}/${TOOLCHAIN_OUTPUTNAME}.host.manifest"
 SDK_EXT_TARGET_MANIFEST = "${SDK_DEPLOY}/${TOOLCHAINEXT_OUTPUTNAME}.target.manifest"
 SDK_EXT_HOST_MANIFEST = "${SDK_DEPLOY}/${TOOLCHAINEXT_OUTPUTNAME}.host.manifest"
 
+SDK_USELESS_DIRS ?= "/dev"
+
 python write_target_sdk_manifest () {
     from oe.sdk import sdk_list_installed_packages
     from oe.utils import format_pkg_list
@@ -103,6 +105,12 @@ python write_target_sdk_manifest () {
         output.write(format_pkg_list(pkgs, 'ver'))
 }
 
+delete_useless () {
+    for d in ${SDK_USELESS_DIRS}; do
+        rm -rf ${SDK_OUTPUT}${SDKTARGETSYSROOT}$d
+    done
+}
+
 python write_sdk_test_data() {
     from oe.data import export2json
     testdata = "%s/%s.testdata.json" % (d.getVar('SDKDEPLOYDIR'), d.getVar('TOOLCHAIN_OUTPUTNAME'))
@@ -122,8 +130,9 @@ python write_host_sdk_manifest () {
 }
 
 POPULATE_SDK_POST_TARGET_COMMAND:append = " write_sdk_test_data ; "
-POPULATE_SDK_POST_TARGET_COMMAND:append:task-populate-sdk  = " write_target_sdk_manifest ; "
+POPULATE_SDK_POST_TARGET_COMMAND:append:task-populate-sdk  = " write_target_sdk_manifest; delete_useless; "
 POPULATE_SDK_POST_HOST_COMMAND:append:task-populate-sdk = " write_host_sdk_manifest; "
+
 SDK_PACKAGING_COMMAND = "${@'${SDK_PACKAGING_FUNC};' if '${SDK_PACKAGING_FUNC}' else ''}"
 SDK_POSTPROCESS_COMMAND = " create_sdk_files; check_sdk_sysroots; archive_sdk; ${SDK_PACKAGING_COMMAND} "
 
-- 
2.33.0

Re: [OE-core][PATCH] populate_sdk_base: remove useless dirs such as /dev

[Richard Purdie]

On Tue, 2022-01-04 at 22:01 -0800, Chen Qi wrote:
> We met a problem that core-image-tiny-initramfs's SDK cannot be
> installed. The error message is like below.
> 
>   tar: ./sysroots/core2-64-poky-linux/dev/console: Cannot mknod: Operation not permitted
> 
> In fact, the '/dev' direcotry is useless for SDK. So remove it.
> 
> This patches uses a variable, SDK_USELESS_DIRS, to hold useless dir entries
> so that it could be extended. For example, '/usr/bin' could be added if wanted.
> 
> Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
> ---
>  meta/classes/populate_sdk_base.bbclass | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/meta/classes/populate_sdk_base.bbclass b/meta/classes/populate_sdk_base.bbclass
> index fafdd96749..d4065b9b13 100644
> --- a/meta/classes/populate_sdk_base.bbclass
> +++ b/meta/classes/populate_sdk_base.bbclass
> @@ -92,6 +92,8 @@ SDK_HOST_MANIFEST = "${SDKDEPLOYDIR}/${TOOLCHAIN_OUTPUTNAME}.host.manifest"
>  SDK_EXT_TARGET_MANIFEST = "${SDK_DEPLOY}/${TOOLCHAINEXT_OUTPUTNAME}.target.manifest"
>  SDK_EXT_HOST_MANIFEST = "${SDK_DEPLOY}/${TOOLCHAINEXT_OUTPUTNAME}.host.manifest"
>  
> +SDK_USELESS_DIRS ?= "/dev"
> +

I think this is the better approach to solving the issue but I don't agree with
the name "USELESS". Something like SDK_PRUNE_SYSROOT_DIRS would probably better
describe what the code is doing.


>  python write_target_sdk_manifest () {
>      from oe.sdk import sdk_list_installed_packages
>      from oe.utils import format_pkg_list
> @@ -103,6 +105,12 @@ python write_target_sdk_manifest () {
>          output.write(format_pkg_list(pkgs, 'ver'))
>  }
>  
> +delete_useless () {

This needs some prefix so we know it is sdk related as well as the useless name
change.


Cheers,

Richard