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[01/35] build: enable using $(CONFIG_FOO) on the rhs of config files

Message ID 1365103395-11547-2-git-send-email-pbonzini@redhat.com
State New
Headers show

Commit Message

Paolo Bonzini April 4, 2013, 7:22 p.m. UTC 
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/Makefile b/Makefile
index 80344d9..0b6e6a1 100644
--- a/Makefile
+++ b/Makefile
@@ -76,7 +76,10 @@  config-all-devices.mak:
 	$(call quiet-command,echo '# no devices' > $@,"  GEN   $@")
 else
 config-all-devices.mak: $(SUBDIR_DEVICES_MAK)
-	$(call quiet-command,cat $(SUBDIR_DEVICES_MAK) | grep =y | sort -u > $@,"  GEN   $@")
+	$(call quiet-command, sed -n \
+             's|^\([^=]*\)=\(.*\)$$|\1:=$$(findstring y,$$(\1)\2)|p' \
+             $(SUBDIR_DEVICES_MAK) | sort -u > $@, \
+             "  GEN   $@")
 endif
 
 -include $(SUBDIR_DEVICES_MAK_DEP)