[PATCH 1/7] [HACK] lto: make config.gz symbol visible

Arnd Bergmann
2018-02-02T16:17:07Z

building with LTO enabled, I often get warnings about kernel/configs.c
being empty when CONFIG_IKCONFIG is disabled:

x86_64-linux/bin/nm: kernel/configs.o: no symbols

Making the symbol visible is probably not the right solution, but
it does get rid of the warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
kernel/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/Makefile b/kernel/Makefile
index 7666ee88e237..40b48e3e87a2 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -120,7 +120,7 @@ targets += config_data.gz
$(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE
$(call if_changed,gzip)

- filechk_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/basic/bin2c; echo "MAGIC_END;")
+ filechk_ikconfiggz = (echo "const char kernel_config_data[] __used __visible = MAGIC_START"; cat $< | scripts/basic/bin2c; echo "MAGIC_END;")
targets += config_data.h
$(obj)/config_data.h: $(obj)/config_data.gz FORCE
$(call filechk,ikconfiggz)
--
2.9.0