[Xen-devel] [PATCH] Make it easier to provide extra compiler flags

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

This makes StdGNU.mk reference an undefined make variable
CMDLINE_CFLAGS which can be set by the build environment to provide
additional compiler options.  This makes building for special
purposes, etc., somewhat simpler.

Ian.

Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

diff -r a5cc38391afb config/StdGNU.mk
--- a/config/StdGNU.mk  Thu Sep 11 16:51:13 2008 +0100
+++ b/config/StdGNU.mk  Thu Sep 11 17:02:02 2008 +0100
@@ -44,7 +44,7 @@ SHLIB_CFLAGS = -shared
 SHLIB_CFLAGS = -shared
 
 ifneq ($(debug),y)
-CFLAGS += -O2 -fomit-frame-pointer
+CFLAGS += -O2 -fomit-frame-pointer $(CMDLINE_CFLAGS)
 else
 # Less than -O1 produces bad code and large stack frames
 CFLAGS += -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls

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