Currently, only the top-level modules.order drops duplicated entries.
The modules.order files in sub-directories potentially contain
duplication. To list out the paths of all modules, I want to use
modules.order instead of parsing *.mod files in $(MODVERDIR).
To achieve this, I want to rip off duplication from modules.order
of external modules too.
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---
scripts/Makefile.build | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index d827b7a36892..1492e37c3927 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -425,13 +425,10 @@ endif # builtin-target
#
# Create commands to either record .ko file or cat modules.order from
# a subdirectory
-modorder-cmds = \
- $(foreach m, $(modorder), \
- $(if $(filter %/modules.order, $m), \
- cat $m;, echo $m;))
-
$(modorder-target): $(subdir-ym) FORCE
- $(Q)(cat /dev/null; $(modorder-cmds)) > $@
+ $(Q){ $(foreach m, $(modorder), \
+ $(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
+ | $(AWK) '!x[$$0]++' - > $@
#
# Rule to compile a set of .o files into one .a file (with symbol table)
--
2.17.1
