commit de481560eb0bd9d940b90311eba85711e4b1150b
author Steven Rostedt <srostedt@redhat.com> Thu Apr 30 12:32:04 2009 -0400
committer Steven Rostedt <rostedt@goodmis.org> Tue Aug 18 22:01:08 2009 -0400
tree 51001590f3a317a6de96d8fa32c86c5be63579dd
parent 6be51ffc1791b72d11cef9bb0a578fe8c5d64c6a

kconfig: keep config.gz around even if CONFIG_IKCONFIG_PROC is not set

If CONFIG_IKCONFIG is set but CONFIG_IKCONFIG_PROC is not, then
gcc will optimize the config.gz out, because nobody uses it.

This patch adds "__used" to the config.gz data to keep it around so that
code like extract-ikconfig can still find it.

[ Impact: allow extract-ikconfig to find config.gz ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

kernel/Makefile

diff --git a/kernel/Makefile b/kernel/Makefile
index 2093a69..d0c84e6 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -119,7 +119,7 @@
 	$(call if_changed,gzip)
 
 quiet_cmd_ikconfiggz = IKCFG   $@
-      cmd_ikconfiggz = (echo "static const char kernel_config_data[] = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;") > $@
+      cmd_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;") > $@
 targets += config_data.h
 $(obj)/config_data.h: $(obj)/config_data.gz FORCE
 	$(call if_changed,ikconfiggz)