@@ -20,32 +20,33 @@ clean-files := inat-tables.c
obj-$(CONFIG_SMP) += msr-smp.o cache-smp.o
-lib-y := delay.o misc.o cmdline.o cpu.o
-lib-y += usercopy_$(BITS).o usercopy.o getuser.o putuser.o
-lib-y += memcpy_$(BITS).o
-lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o
-lib-$(CONFIG_INSTRUCTION_DECODER) += insn.o inat.o insn-eval.o
-lib-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
-lib-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
-lib-$(CONFIG_RETPOLINE) += retpoline.o
+lib-y += delay.o
+obj-y += misc.o cmdline.o cpu.o
+obj-y += usercopy_$(BITS).o usercopy.o getuser.o putuser.o
+obj-y += memcpy_$(BITS).o
+obj-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o
+obj-$(CONFIG_INSTRUCTION_DECODER) += insn.o inat.o insn-eval.o
+obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o
+obj-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o
+obj-$(CONFIG_RETPOLINE) += retpoline.o
obj-y += msr.o msr-reg.o msr-reg-export.o hweight.o
ifeq ($(CONFIG_X86_32),y)
obj-y += atomic64_32.o
- lib-y += atomic64_cx8_32.o
- lib-y += checksum_32.o
- lib-y += strstr_32.o
- lib-y += string_32.o
+ obj-y += atomic64_cx8_32.o
+ obj-y += checksum_32.o
+ obj-y += strstr_32.o
+ obj-y += string_32.o
ifneq ($(CONFIG_X86_CMPXCHG64),y)
- lib-y += cmpxchg8b_emu.o atomic64_386_32.o
+ obj-y += cmpxchg8b_emu.o atomic64_386_32.o
endif
- lib-$(CONFIG_X86_USE_3DNOW) += mmx_32.o
+ obj-$(CONFIG_X86_USE_3DNOW) += mmx_32.o
else
obj-y += iomap_copy_64.o
- lib-y += csum-partial_64.o csum-copy_64.o csum-wrappers_64.o
- lib-y += clear_page_64.o copy_page_64.o
- lib-y += memmove_64.o memset_64.o
- lib-y += copy_user_64.o
- lib-y += cmpxchg16b_emu.o
+ obj-y += csum-partial_64.o csum-copy_64.o csum-wrappers_64.o
+ obj-y += clear_page_64.o copy_page_64.o
+ obj-y += memmove_64.o memset_64.o
+ obj-y += copy_user_64.o
+ obj-y += cmpxchg16b_emu.o
endif
Building with LTO on gcc-8, I got many link failures like this: ./ccWpIHzj.ltrans0.ltrans.o: In function `siox_poll_thread': <artificial>:(.text+0x3042): undefined reference to `memset' ./ccWpIHzj.ltrans0.ltrans.o: In function `iio_push_to_buffers': <artificial>:(.text+0xdd22): undefined reference to `memcpy' ./ccWpIHzj.ltrans0.ltrans.o: In function `dln2_adc_trigger_h': <artificial>:(.text+0x24175): undefined reference to `memcpy' <artificial>:(.text+0x241ec): undefined reference to `memset' ./ccWpIHzj.ltrans3.ltrans.o: In function `ir_update_mapping.isra.1': <artificial>:(.text+0x1d5a5): undefined reference to `memmove' ./ccWpIHzj.ltrans3.ltrans.o: In function `ir_establish_scancode': <artificial>:(.text+0x1d6c9): undefined reference to `memmove' ./ccWpIHzj.ltrans9.ltrans.o: In function `write_rbu_image_type': <artificial>:(.text+0x92d6): undefined reference to `strstr' It seems that the linker fails to pull in the lib.a file for some reason I have not found out. We want a proper fix for this, but in the meantime, this simply makes all those files built-in all the time, which does the right thing with LTO but might produce a slightly larger kernel image without it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- arch/x86/lib/Makefile | 39 ++++++++++++++++++++------------------- 1 file changed, 20 insertions(+), 19 deletions(-) -- 2.9.0