[PATCH] scripts/get_default_envs.sh: preserve order of multiple entries for same variable

[Rasmus Villemoes]

It's possible that the default_environment[] array contains multiple
entries for the same variable, e.g. a setting from env_default.h based
on some CONFIG_* variable, and another from
CONFIG_EXTRA_ENV_SETTINGS. In such a case, the last setting takes
effect.

Hence, in order to be able to use the output from this script as an
CONFIG_DEFAULT_ENV_FILE and get the same default environment as one
currently has, we need to preserve the order. So only sort by the
variable name, and disable the last-resort comparison.

We could pipe the result through uniq to remove duplicate lines, but I
think there's some value in seeing that certain variables are defined
multiple times.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes at prevas.dk>
---
 scripts/get_default_envs.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/get_default_envs.sh b/scripts/get_default_envs.sh
index da86a9d69c..d1f2ce4d5c 100755
--- a/scripts/get_default_envs.sh
+++ b/scripts/get_default_envs.sh
@@ -35,7 +35,7 @@ cp ${env_obj_file_path} ${ENV_OBJ_FILE_COPY}
 ${OBJCOPY} -O binary -j ".rodata.default_environment" ${ENV_OBJ_FILE_COPY}
 
 # Replace default '\0' with '\n' and sort entries
-tr '\0' '\n' < ${ENV_OBJ_FILE_COPY} | sort -u
+tr '\0' '\n' < ${ENV_OBJ_FILE_COPY} | sort --field-separator== -k1,1 --stable
 
 rm ${ENV_OBJ_FILE_COPY}
 
-- 
2.23.0