[PATCH] scripts/get_default_envs.sh: Update for thin archive support

[Tom Rini]

This script was broken by the change to default archives for linking.
This is due to objcopy specifically disallowing copying of thin
archives.  To fix this and re-support external users of this script,
switch to using the same logic the u-boot-initial-env make target uses
to dump the section from the object file.

Reported-by: Jan Kiszka <jan.kiszka at web.de>
Fixes: 958f2e57eff7 ("build: use thin archives instead of incremental linking")
Signed-off-by: Tom Rini <trini at konsulko.com>
---
 scripts/get_default_envs.sh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scripts/get_default_envs.sh b/scripts/get_default_envs.sh
index d1f2ce4d5c51..3c6fdc45e11f 100755
--- a/scripts/get_default_envs.sh
+++ b/scripts/get_default_envs.sh
@@ -10,7 +10,7 @@ set -ue
 
 : "${OBJCOPY:=${CROSS_COMPILE:-}objcopy}"
 
-ENV_OBJ_FILE="built-in.o"
+ENV_OBJ_FILE="common.o"
 ENV_OBJ_FILE_COPY="copy_${ENV_OBJ_FILE}"
 
 echoerr() { echo "$@" 1>&2; }
@@ -32,7 +32,8 @@ cp ${env_obj_file_path} ${ENV_OBJ_FILE_COPY}
 # NOTE: objcopy saves its output to file passed in
 # (copy_${ENV_OBJ_FILE} in this case)
 
-${OBJCOPY} -O binary -j ".rodata.default_environment" ${ENV_OBJ_FILE_COPY}
+${OBJCOPY} --dump-section .rodata.default_environment=${ENV_OBJ_FILE_COPY} \
+	${env_obj_file_path}
 
 # Replace default '\0' with '\n' and sort entries
 tr '\0' '\n' < ${ENV_OBJ_FILE_COPY} | sort --field-separator== -k1,1 --stable
-- 
2.25.1