[PATCH] Fix create_merged_usr_symlinks in populate_sdk_base.bbclass and image.bbclass

[Yangwoo Byun <yw.byun@lge.com>]

Modifying FILESYSTEM_PERMS_TABLES does not change the UID and GID of
/usr/bin

I modified create_merged_usr_symlinks and
moved its execution order back

Signed-off-by: Yangwoo Byun <yw.byun@lge.com>
---
 meta/classes-recipe/image.bbclass             |  2 +-
 meta/classes-recipe/populate_sdk_base.bbclass | 48 +++++++++++++++----
 2 files changed, 40 insertions(+), 10 deletions(-)

diff --git a/meta/classes-recipe/image.bbclass b/meta/classes-recipe/image.bbclass
index 53f1a9dc45b..2d90b29c8c5 100644
--- a/meta/classes-recipe/image.bbclass
+++ b/meta/classes-recipe/image.bbclass
@@ -686,7 +686,7 @@ create_merged_usr_symlinks_rootfs() {
     create_merged_usr_symlinks ${IMAGE_ROOTFS}
 }
 
-ROOTFS_PREPROCESS_COMMAND += "${@bb.utils.contains('DISTRO_FEATURES', 'usrmerge', 'create_merged_usr_symlinks_rootfs', '',d)}"
+ROOTFS_POSTPROCESS_COMMAND:append = " ${@bb.utils.contains('DISTRO_FEATURES', 'usrmerge', 'create_merged_usr_symlinks_rootfs', '',d)}"
 
 reproducible_final_image_task () {
     if [ "$REPRODUCIBLE_TIMESTAMP_ROOTFS" = "" ]; then
diff --git a/meta/classes-recipe/populate_sdk_base.bbclass b/meta/classes-recipe/populate_sdk_base.bbclass
index 8e671cf28fa..cafd9a5698a 100644
--- a/meta/classes-recipe/populate_sdk_base.bbclass
+++ b/meta/classes-recipe/populate_sdk_base.bbclass
@@ -186,21 +186,51 @@ POPULATE_SDK_POST_HOST_COMMAND:append:task-populate-sdk = " write_host_sdk_manif
 # Prepare the root links to point to the /usr counterparts.
 create_merged_usr_symlinks() {
     root="$1"
-    install -d $root${base_bindir} $root${base_sbindir} $root${base_libdir}
-    ln -rs $root${base_bindir} $root/bin
-    ln -rs $root${base_sbindir} $root/sbin
-    ln -rs $root${base_libdir} $root/${baselib}
+
+    if [ ! -d "$root${base_bindir}" ]; then
+        install -d "$root${base_bindir}"
+    fi
+
+    if [ ! -d "$root${base_sbindir}" ]; then
+        install -d "$root${base_sbindir}"
+    fi
+
+    if [ ! -d "$root${base_libdir}" ]; then
+        install -d "$root${base_libdir}"
+    fi
+
+    if [ ! -e "$root/bin" ]; then
+        ln -rs "$root${base_bindir}" "$root/bin"
+    fi
+
+    if [ ! -e "$root/sbin" ]; then
+        ln -rs "$root${base_sbindir}" "$root/sbin"
+    fi
+
+    if [ ! -e "$root/${baselib}" ]; then
+        ln -rs "$root${base_libdir}" "$root/${baselib}"
+    fi
 
     if [ "${nonarch_base_libdir}" != "${base_libdir}" ]; then
-       install -d $root${nonarch_base_libdir}
-       ln -rs $root${nonarch_base_libdir} $root/lib
+        if [ ! -d "$root${nonarch_base_libdir}" ]; then
+            install -d "$root${nonarch_base_libdir}"
+        fi
+
+        if [ ! -e "$root/lib" ]; then
+            ln -rs "$root${nonarch_base_libdir}" "$root/lib"
+        fi
     fi
 
     # create base links for multilibs
     multi_libdirs="${@d.getVar('MULTILIB_VARIANTS')}"
     for d in $multi_libdirs; do
-        install -d $root${exec_prefix}/$d
-        ln -rs $root${exec_prefix}/$d $root/$d
+        if [ ! -d "$root${exec_prefix}/$d" ]; then
+            install -d "$root${exec_prefix}/$d"
+        fi
+
+        if [ ! -e "$root/$d" ]; then
+            ln -rs "$root${exec_prefix}/$d" "$root/$d"
+        fi
     done
 }
 
@@ -208,7 +238,7 @@ create_merged_usr_symlinks_sdk() {
     create_merged_usr_symlinks ${SDK_OUTPUT}${SDKTARGETSYSROOT}
 }
 
-POPULATE_SDK_PRE_TARGET_COMMAND += "${@bb.utils.contains('DISTRO_FEATURES', 'usrmerge', 'create_merged_usr_symlinks_sdk', '',d)}"
+POPULATE_SDK_POST_TARGET_COMMAND:append = " ${@bb.utils.contains('DISTRO_FEATURES', 'usrmerge', 'create_merged_usr_symlinks_sdk', '',d)}"
 
 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}"