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b1992c3772
Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for
checked-in source files. It is merely a convention without any functional
difference. In fact, $(obj) and $(src) are exactly the same, as defined
in scripts/Makefile.build:
src := $(obj)
When the kernel is built in a separate output directory, $(src) does
not accurately reflect the source directory location. While Kbuild
resolves this discrepancy by specifying VPATH=$(srctree) to search for
source files, it does not cover all cases. For example, when adding a
header search path for local headers, -I$(srctree)/$(src) is typically
passed to the compiler.
This introduces inconsistency between upstream and downstream Makefiles
because $(src) is used instead of $(srctree)/$(src) for the latter.
To address this inconsistency, this commit changes the semantics of
$(src) so that it always points to the directory in the source tree.
Going forward, the variables used in Makefiles will have the following
meanings:
$(obj) - directory in the object tree
$(src) - directory in the source tree (changed by this commit)
$(objtree) - the top of the kernel object tree
$(srctree) - the top of the kernel source tree
Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced
with $(src).
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
48 lines
1.3 KiB
Makefile
48 lines
1.3 KiB
Makefile
#
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# Makefile fragment for Broadcom 802.11n Networking Device Driver
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#
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# Copyright (c) 2010 Broadcom Corporation
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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ccflags-y := \
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-I $(src) \
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-I $(src)/phy \
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-I $(src)/../include
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brcmsmac-y := \
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mac80211_if.o \
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ucode_loader.o \
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ampdu.o \
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antsel.o \
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channel.o \
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main.o \
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phy_shim.o \
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pmu.o \
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rate.o \
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stf.o \
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aiutils.o \
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phy/phy_cmn.o \
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phy/phy_lcn.o \
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phy/phy_n.o \
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phy/phytbl_lcn.o \
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phy/phytbl_n.o \
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phy/phy_qmath.o \
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dma.o \
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brcms_trace_events.o \
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debug.o
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brcmsmac-$(CONFIG_BRCMSMAC_LEDS) += led.o
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obj-$(CONFIG_BRCMSMAC) += brcmsmac.o
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