Makefile

   1 #
   2 # Makefile for the Linux WWAN device drivers.
   3 #
   4 # NOTE: This make file can serve as both an external Makefile (launched
   5 #       directly by the user), or as the sub-dir Makefile used by the kernel
   6 #       build system.
   7
   8 # If CONFIG_SPI_TTY isn't set, we'll assume the user has never configured
   9 # their kernel to include this module and set up some defaults.
  10 #
  11 # NOTE: If you have previously added the SPI_TTY project to your kernel
  12 #       and configured it for inclusion, these settings will be
  13 #       overridden by your kernel configuration.
  14 ifndef CONFIG_SPI_TTY
  15 EXTERNAL_BUILD=y
  16 CONFIG_SPI_TTY=m
  17 CONFIG_SPI_TTY_DEBUG=n
  18 endif
  19
  20
  21 ifeq ($(CONFIG_SPI_TTY_DEBUG),y)
  22         EXTRA_CFLAGS += -g -Wa,-adhlms=$@.lst
  23 endif
  24
  25 ifdef KBUILD_EXTMOD
  26         EXTRA_CFLAGS += -I$(KBUILD_EXTMOD)
  27 endif
  28
  29
  30 list-m :=
  31 list-$(CONFIG_SPI_TTY) += spi_tty
  32 obj-$(CONFIG_SPI_TTY) += spi_tty.o
  33
  34 #
  35 # Begin dual Makefile mode here.  First we provide support for when we
  36 # are being invoked by the kernel build system
  37 #
  38 ifneq ($(KERNELRELEASE),)
  39
  40 EXTRA_CFLAGS += -DCONFIG_PM
  41
  42 ifeq ($(EXTERNAL_BUILD),y)
  43 ifeq ($(CONFIG_SPI_TTY_DEBUG),y)
  44 EXTRA_CFLAGS += -DCONFIG_SPI_TTY_DEBUG
  45 endif
  46 endif
  47
  48 else
  49 # Here we begin the portion that is executed if the user invoked this Makefile
  50 # directly.
  51
  52 # KSRC should be set to the path to your sources
  53 KVER := $(shell uname -r)
  54 KSRC := /lib/modules/$(KVER)/build
  55 INSTALLDIR:=/lib/modules/$(KVER)/kernel/drivers/net/wwan/
  56
  57 # KSRC_OUTPUT should be overridden if you are using a 2.6 kernel that
  58 # has it's output sent elsewhere via KBUILD_OUTPUT= or O=
  59 KSRC_OUTPUT := $(KSRC)
  60
  61 PWD=$(shell pwd)
  62
  63 VERFILE := $(KSRC_OUTPUT)/include/linux/version.h
  64 KERNELRELEASE := $(shell \
  65         if [ -r $(VERFILE) ]; then \
  66                 (cat $(VERFILE); echo UTS_RELEASE) | \
  67                 $(CC) -I$(KSRC_OUTPUT) $(CFLAGS) -E - | \
  68                 tail -n 1 | \
  69                 xargs echo; \
  70         else \
  71                 uname -r; \
  72         fi)
  73
  74 MODPATH := $(DESTDIR)/lib/modules/$(KERNELRELEASE)
  75
  76 all: modules
  77
  78 clean:
  79         $(RM) -f *.mod.* *.mod *.o *.ko .*.o.cmd .*.ko.cmd *.flags .lst *.lst Module*.symvers
  80         $(RM) -rf $(PWD)/tmp
  81         $(RM) -rf .tmp_versions
  82
  83 distclean: clean
  84         rm -f tags TAGS
  85
  86 TMP=$(PWD)/tmp
  87 MODVERDIR=$(TMP)/.tmp_versions
  88
  89 modules:
  90         mkdir -p $(MODVERDIR)
  91 ifdef ($(KSRC_OUTPUT)/.tmp_versions)
  92         -cp $(KSRC_OUTPUT)/.tmp_versions/*.mod $(MODVERDIR)
  93 endif
  94 ifeq ($(KSRC),$(KSRC_OUTPUT)) # We're not outputting elsewhere
  95 ifdef ($(KSRC)/.tmp_versions)
  96         -cp $(KSRC)/.tmp_versions/*.mod $(MODVERDIR)
  97 endif
  98         $(MAKE) -C $(KSRC) M=$(PWD) MODVERDIR=$(MODVERDIR) modules
  99 else # We've got a kernel with seperate output, copy the config, and use O=
 100         mkdir -p $(TMP)
 101         cp $(KSRC_OUTPUT)/.config $(TMP)
 102         $(MAKE) -C $(KSRC) M=$(PWD) MODVERDIR=$(MODVERDIR)) O=$(PWD)/tmp modules
 103 endif
 104
 105 install: modules
 106         modprobe -r spi_tty || true
 107         install -d $(INSTALLDIR)
 108         install -m 644 -c $(addsuffix .ko,$(list-m)) $(INSTALLDIR)
 109         /sbin/depmod -a ${KVER}
 110
 111 uninstall:
 112         rm -rf $(addprefix $(INSTALLDIR),$(addsuffix .ko,$(list-m)))
 113         /sbin/depmod -a ${KVER}
 114
 115 endif # End of internal build
 116
 117 .PHONY: TAGS tags
 118
 119 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \) -prune -o
 120 define all-sources
 121         ( find . $(RCS_FIND_IGNORE) -name '*.[chS]' -print )
 122 endef
 123
 124 TAGS:
 125         $(all-sources) | etags -
 126 tags:
 127         $(RM) -f $@
 128         CTAGSF=`ctags --version | grep -i exuberant >/dev/null && echo "-I __initdata,__exitdata,EXPORT_SYMBOL,EXPORT_SYMBOL_NOVERS"`; \
 129         $(all-sources) | xargs ctags $$CTAGSF -a
 130