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| author | Peter Foley <pefoley2@verizon.net> | 2011-07-06 01:42:18 +0200 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2011-07-20 01:32:32 +0200 |
| commit | e78e8f2d8318851d0911039999c903a6082bef2e (patch) | |
| tree | 6de5c0c1fd3219985116b2225448c0c0f8a23093 /kernel | |
| parent | headers_install: fix __packed in exported kernel headers (diff) | |
| download | linux-e78e8f2d8318851d0911039999c903a6082bef2e.tar.xz linux-e78e8f2d8318851d0911039999c903a6082bef2e.zip | |
kernel: prevent unnecessary rebuilding due to config_data.gz
When IKCONFIG is built-in make oldconfig will cause the kernel to be
relinked even if .config didn't change. This happens because of a
config_data.gz dependency on .config. This patch changes the if_changed
to a filechk so that config_data.h is only rebuilt when the contents
have actually changed.
Signed-off-by: Peter Foley <pefoley2@verizon.net>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/Makefile | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/Makefile b/kernel/Makefile index 2d64cfcc8b42..d06467fc8f7c 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -125,11 +125,10 @@ targets += config_data.gz $(obj)/config_data.gz: $(KCONFIG_CONFIG) FORCE $(call if_changed,gzip) -quiet_cmd_ikconfiggz = IKCFG $@ - cmd_ikconfiggz = (echo "static const char kernel_config_data[] __used = MAGIC_START"; cat $< | scripts/bin2c; echo "MAGIC_END;") > $@ + filechk_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) + $(call filechk,ikconfiggz) $(obj)/time.o: $(obj)/timeconst.h |