Makefile

   1 #                                                       -*-Makefile-*-
   2 # Copyright (C) 2008
   3 # The ACX100 Open Source Project <acx100-devel@lists.sourceforge.net>
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 #
  18 # This makefile, allows compiling driver either inside or outside the kernel
  19 # tree without further modifications.
  20 #
  21 # Please read the INSTALL file for further information.
  22
  23 ifneq ($(KERNELRELEASE),)
  24 # If KERNELRELEASE is defined, we've been invoked from the kernel build system
  25 # and can use its language (this variable can only be set only from the top
  26 # level Makefile of the source tree). We simply have to declare the modules and
  27 # leave the rest to the kernel build system.
  28         obj-$(CONFIG_ACX_MAC80211) += acx-mac80211.o
  29         acx-mac80211-obj-$(CONFIG_ACX_MAC80211_PCI) += pci.o
  30         acx-mac80211-obj-$(CONFIG_ACX_MAC80211_USB) += usb.o
  31         acx-mac80211-objs := common.o $(acx-mac80211-obj-y)
  32 else
  33 # Otherwise we were called directly from the command line: the the kernel build
  34 # system must be explicitly invoked.
  35         EXTRA_KCONFIG?= \
  36                 CONFIG_ACX_MAC80211=m \
  37                 CONFIG_ACX_MAC80211_PCI=y
  38
  39         EXTRA_CFLAGS:= \
  40                 $(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
  41                 $(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG))))
  42         KERNELDIR ?= /lib/modules/$(shell uname -r)/build
  43         PWD := $(shell pwd)
  44 all:
  45         $(MAKE) -C $(KERNELDIR) M=$(PWD) $(EXTRA_KCONFIG) EXTRA_CFLAGS="$(EXTRA_CFLAGS)" modules
  46
  47 install:
  48         $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
  49
  50 clean:
  51         $(MAKE) -C $(KERNELDIR) M=$(PWD) clean
  52
  53 help:
  54         $(MAKE) -C $(KERNELDIR) M=$(PWD) help
  55
  56 .PHONY: modules modules_install clean help
  57
  58 endif