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

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Date:   Fri,  2 Feb 2018 17:15:39 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Nicolas Pitre <nico@...aro.org>, Andi Kleen <ak@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>
Subject: [PATCH 1/7] [HACK] lto: make config.gz symbol visible

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@...db.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