commit bb585a784e9ad69207315d694e7dad2c422f6baa
author Paolo Bonzini <pbonzini@redhat.com> Wed Apr 03 17:53:21 2013 +0200
committer Paolo Bonzini <pbonzini@redhat.com> Mon Apr 08 18:13:10 2013 +0200
tree ccedd9da71ede1f0cac718e928aa471d41a11f4d
parent 9196dd411d580c27f85daa209ff9a501d719ebc0

build: enable using $(CONFIG_FOO) on the rhs of config files

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Makefile

diff --git a/Makefile b/Makefile
index 80344d9..0b6e6a1 100644
--- a/Makefile
+++ b/Makefile
@@ -76,7 +76,10 @@
 	$(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)