kbuild: thin archives use P option to ar
The P option makes ar do full path name matching and can prevent ar
from discarding files with duplicate names in some cases of creating
thin archives from thin archives. The sh architecture in particular
loses some object files from its kernel/cpu/sh*/ directories without
this option.
This could be a bug in binutils ar, but the P option should not cause
any negative effects so it is safe to use to work around this with.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 733e044..4a9a2ce 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -437,8 +437,8 @@
ifdef builtin-target
ifdef CONFIG_THIN_ARCHIVES
- cmd_make_builtin = rm -f $@; $(AR) rcST$(KBUILD_ARFLAGS)
- cmd_make_empty_builtin = rm -f $@; $(AR) rcST$(KBUILD_ARFLAGS)
+ cmd_make_builtin = rm -f $@; $(AR) rcSTP$(KBUILD_ARFLAGS)
+ cmd_make_empty_builtin = rm -f $@; $(AR) rcSTP$(KBUILD_ARFLAGS)
quiet_cmd_link_o_target = AR $@
else
cmd_make_builtin = $(LD) $(ld_flags) -r -o
@@ -478,7 +478,7 @@
quiet_cmd_link_l_target = AR $@
ifdef CONFIG_THIN_ARCHIVES
- cmd_link_l_target = rm -f $@; $(AR) rcsT$(KBUILD_ARFLAGS) $@ $(lib-y)
+ cmd_link_l_target = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(lib-y)
else
cmd_link_l_target = rm -f $@; $(AR) rcs$(KBUILD_ARFLAGS) $@ $(lib-y)
endif
@@ -531,7 +531,7 @@
ifdef CONFIG_THIN_ARCHIVES
quiet_cmd_link_multi-y = AR $@
- cmd_link_multi-y = rm -f $@; $(AR) rcST$(KBUILD_ARFLAGS) $@ $(link_multi_deps)
+ cmd_link_multi-y = rm -f $@; $(AR) rcSTP$(KBUILD_ARFLAGS) $@ $(link_multi_deps)
else
quiet_cmd_link_multi-y = LD $@
cmd_link_multi-y = $(cmd_link_multi-link)
