(as an aside, my apologies for the recent, nitpicky posts but i've
decided to understand the build structure once and for all and, well,
i am all about the nitpick. :-)
from scripts/Kbuild.include:
...
# Prefix -I with $(srctree) if it is not an absolute path.
addtree = $(if $(filter-out -I/%,$(1)),$(patsubst -I%,-I$(srctree)/%,$(1))) $(1)
...
just from the comment, i would have thought then that if i passed,
say, the string "-Ia -I/b", the result should be "-I$(srctree)/a
-I/b", no? in short, non-fully-qualified entries should be
fully-qualified, while those already filly qualified should be left
untouched, correct?
but that's not what that function is doing. as a quick test run, we
have the Makefile:
=====
addtree = $(if $(filter-out -I/%,$(1)),$(patsubst -I%,-I$(srctree)/%,$(1))) $(1)
srctree := /src
S=-Ia -I/b
yo:
@echo $(S)
@echo $(call addtree,$(S))
=====
$ make
-Ia -I/b
-I/src/a -I/src//b -Ia -I/b
$
is that what's *supposed* to happen? it sure doesn't seem to match
what the comment suggests.
rday
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA
http://crashcourse.ca
========================================================================
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