linux_dsm_epyc7002/arch/sh/lib/Makefile
Geert Uytterhoeven 84ed8a9905 sh: always link in helper functions extracted from libgcc
E.g. landisk_defconfig, which has CONFIG_NTFS_FS=m:

  ERROR: "__ashrdi3" [fs/ntfs/ntfs.ko] undefined!

For "lib-y", if no symbols in a compilation unit are referenced by other
units, the compilation unit will not be included in vmlinux.  This
breaks modules that do reference those symbols.

Use "obj-y" instead to fix this.

http://kisskb.ellerman.id.au/kisskb/buildresult/8838077/

This doesn't fix all cases. There are others, e.g. udivsi3.
This is also not limited to sh, many architectures handle this in the
same way.

A simple solution is to unconditionally include all helper functions.
A more complex solution is to make the choice of "lib-y" or "obj-y" depend
on CONFIG_MODULES:

  obj-$(CONFIG_MODULES) += ...
  lib-y($CONFIG_MODULES) += ...

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Tested-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Reviewed-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-12-18 19:04:51 -08:00

34 lines
766 B
Makefile

#
# Makefile for SuperH-specific library files..
#
lib-y = delay.o memmove.o memchr.o \
checksum.o strlen.o div64.o div64-generic.o
# Extracted from libgcc
obj-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \
ashlsi3.o ashrsi3.o ashiftrt.o lshrsi3.o \
udiv_qrnnd.o
udivsi3-y := udivsi3_i4i-Os.o
ifneq ($(CONFIG_CC_OPTIMIZE_FOR_SIZE),y)
udivsi3-$(CONFIG_CPU_SH3) := udivsi3_i4i.o
udivsi3-$(CONFIG_CPU_SH4) := udivsi3_i4i.o
endif
udivsi3-y += udivsi3.o
obj-y += io.o
memcpy-y := memcpy.o
memcpy-$(CONFIG_CPU_SH4) := memcpy-sh4.o
memset-y := memset.o
memset-$(CONFIG_CPU_SH4) := memset-sh4.o
lib-$(CONFIG_MMU) += copy_page.o __clear_user.o
lib-$(CONFIG_MCOUNT) += mcount.o
lib-y += $(memcpy-y) $(memset-y) $(udivsi3-y)
ccflags-y := -Werror