[Xen-devel] [PATCH] xen: append EXTRA_CFLAGS to CFLAGS for expert builds

[Doug Goldstein <cardoe@xxxxxxxxxx>]

Allow a user to supply extra CFLAGS via the EXTRA_CFLAGS environment
variable.  This is not a configuration that is supported but is only
aimed to help support testing and troubleshooting when you need to make
changes.

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>
CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
---
 xen/Rules.mk | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/Rules.mk b/xen/Rules.mk
index 3cf40754a6..63b559035f 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -75,6 +75,8 @@ ALL_OBJS := $(ALL_OBJS-y)
 CFLAGS-y += -MMD -MF $(@D)/.$(@F).d
 
 CFLAGS += $(CFLAGS-y)
+# allow extra CFLAGS externally via EXTRA_CFLAGS
+CFLAGS += $(EXTRA_CFLAGS)
 
 # Most CFLAGS are safe for assembly files:
 #  -std=gnu{89,99} gets confused by #-prefixed end-of-line comments
-- 
2.13.6


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