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Commit 9a6cfca4 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Masahiro Yamada
Browse files

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: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
parent 1328a1ae

scripts/Makefile.build

+4 −4
Original line number Diff line number Diff line
@@ -437,8 +437,8 @@ $(sort $(subdir-obj-y)): $(subdir-ym) ; 
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 @@ ifdef lib-target 
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 @@ cmd_link_multi-link = $(LD) $(ld_flags) -r -o $@ $(link_multi_deps) $(cmd_secana 


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)

scripts/link-vmlinux.sh

+1 −1
Original line number Diff line number Diff line
@@ -50,7 +50,7 @@ archive_builtin() 
	if [ -n "${CONFIG_THIN_ARCHIVES}" ]; then

		info AR built-in.o

		rm -f built-in.o;

		${AR} rcsT${KBUILD_ARFLAGS} built-in.o			\

		${AR} rcsTP${KBUILD_ARFLAGS} built-in.o			\

					${KBUILD_VMLINUX_INIT}		\

					${KBUILD_VMLINUX_MAIN}

	fi