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[Xen-devel] [RFC PATCH 5/7] build: wire up pre-existing debug build flag



This allows 'make debug=n' and 'make debug=y' work as it did previously
but only in the case of the user not having an existing .config file
from a 'make menuconfig'. This is because the command line 'debug' flag
can only be used to set the default value and if the user has already
built up a config their have their real preference set.

Signed-off-by: Doug Goldstein <cardoe@xxxxxxxxxx>
---
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CC: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
CC: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
CC: Tim Deegan <tim@xxxxxxx>
CC: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 xen/Kconfig.debug | 5 +++++
 xen/Makefile      | 1 +
 2 files changed, 6 insertions(+)

diff --git a/xen/Kconfig.debug b/xen/Kconfig.debug
index 0b2ec50..ec27b09 100644
--- a/xen/Kconfig.debug
+++ b/xen/Kconfig.debug
@@ -1,6 +1,11 @@
+config DEBUG_ENV
+       bool
+       option env="debug"
 
 menuconfig DEBUG
        bool "Debugging Options"
+       default y if DEBUG_ENV = "y"
+       default n
        ---help---
          If you want to debug Xen say Y and select any additional debugging
          support options. This enables additional debugging through Xen
diff --git a/xen/Makefile b/xen/Makefile
index f49014b..e2da895 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -27,6 +27,7 @@ SRCARCH=$(shell echo $(ARCH) | sed -e 's/x86.*/x86/' -e 
s'/arm\(32\|64\)/arm/g')
 # Don't break if the build process wasn't called from the top level
 # we need XEN_TARGET_ARCH to generate the proper config
 include $(XEN_ROOT)/Config.mk
+export debug
 
 # Allow someone to change their config file
 export KCONFIG_CONFIG ?= .config
-- 
2.7.3


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