[09/14] kconfig: keep config.gz around even if CONFIG_IKCONFIG_PROC is not set

Commit Message

Steven Rostedt Aug. 19, 2009, 2:56 a.m. UTC

From: Steven Rostedt <[e-mail]>

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 <[e-mail]>
---
 kernel/Makefile |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

Patch

diff --git a/kernel/Makefile b/kernel/Makefile
index 2093a69..d0c84e6 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -119,7 +119,7 @@  $(obj)/config_data.gz: .config FORCE
 	$(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)