kernel/Makefile

   1 # ZeX/OS makefile
   2 # Copyright (C) 2007 Alex Smith
   3 #               2008 Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   4 #               2009 Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of version 2 of the GNU General Public License
   8 # as published by the Free Software Foundation.
   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 along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19 # This piece of code was borrowed from Exclaim
  20 # Thanks for Alex Smith
  21
  22 ZEXOS_VERSION = 0
  23 ZEXOS_PATCHLEVEL = 6
  24 ZEXOS_SUBLEVEL = 7
  25 ZEXOS_EXTRAVERSION =
  26 ZEXOS_CODENAME =
  27
  28 HOSTCC := gcc
  29 HOSTCXX := g++
  30
  31 src := $(shell pwd)
  32 obj := $(shell pwd)/build/$(ARCH)
  33 export src obj
  34
  35 ifneq ($(V),1)
  36         Q := @
  37 endif
  38
  39 # When ARCH is not defined, lets detect architecture
  40 ifeq ($(ARCH),)
  41         ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/x86_64/i386/)
  42 endif
  43
  44 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
  45 export KERNELVERSION
  46
  47 ifeq ($(strip $(wildcard .config)),)
  48
  49 all:
  50         @printf "Please run make menuconfig, xconfig, gconfig or config first.\n"
  51         @false
  52 else
  53
  54 include $(src)/.config
  55
  56 all: prepare $(obj)/config.h $(obj)/build.h compilation drivers
  57         @printf "  DONE\n"
  58
  59 endif
  60
  61 include utils/kconfig/Makefile
  62
  63 include kernel.mak
  64
  65 # prepare
  66 prepare:
  67         $(Q)if [ ! -d "$(obj)" ]; then mkdir -p $(obj); fi
  68         $(Q)if [ -e "$(src)/arch/main" ]; then rm $(src)/arch/main; fi
  69         $(Q)ln -s $(src)/arch/$(ARCH) $(src)/arch/main
  70         $(Q)if [ -e "$(src)/build/main" ]; then rm $(src)/build/main; fi
  71         $(Q)ln -s $(src)/build/$(ARCH) $(src)/build/main
  72         $(Q)if [ -e "$(src)/include/arch" ]; then rm $(src)/include/arch; fi
  73         $(Q)ln -s $(src)/arch/$(ARCH)/include $(src)/include/arch
  74
  75 $(obj)/config.h: .config
  76         $(Q)make --no-print-directory silentoldconfig
  77         @printf "  CP      $(subst $(shell pwd)/,,$(obj)/config.h)\n"
  78         $(Q)cp $(src)/.tmpconfig.h $(obj)/config.h
  79
  80 # This is generated to build.h header file, which is needed to compilation
  81 $(obj)/build.h: Makefile
  82         @printf "  GEN     $(subst $(shell pwd)/,,$(obj)/build.h)\n"
  83         $(Q)printf "#define ZEXOS_MAJOR \"$(ZEXOS_VERSION)\"\n" > $(obj)/build.h
  84         $(Q)printf "#define ZEXOS_MINOR \"$(ZEXOS_PATCHLEVEL)\"\n" >> $(obj)/build.h
  85         $(Q)printf "#define ZEXOS_REVISION \"$(ZEXOS_SUBLEVEL)\"\n" >> $(obj)/build.h
  86         $(Q)printf "#define ZEXOS_EXTRAVER \"$(ZEXOS_EXTRAVERSION)\"\n" >> $(obj)/build.h
  87         $(Q)printf "#define ZEXOS_VERSION \"$(ZEXOS_KERNELVERSION)$(CONFIG_LOCALVERSION)\"\n" >> $(obj)/build.h
  88         $(Q)printf "#define ZEXOS_CODENAME \"$(ZEXOS_CODENAME)\"\n" >> $(obj)/build.h
  89         $(Q)printf "#define ZEXOS_DATE \"`LANG= date \"+%Y-%m-%d %H:%m:%S\"`\"\n" >> $(obj)/build.h
  90         $(Q)printf "\n" >> $(obj)/build.h
  91         $(Q)printf "#define ZEXOS_COMPILER \"$(shell LANG= $(CC) --version | head -n1)\"\n" >> $(obj)/build.h
  92         $(Q)printf "#define ZEXOS_COMPILE_BY \"$(shell PATH=$$PATH:/usr/ucb whoami)\"\n" >> $(obj)/build.h
  93         $(Q)printf "#define ZEXOS_COMPILE_HOST \"$(shell hostname)\"\n" >> $(obj)/build.h
  94         $(Q)printf "#define ZEXOS_COMPILE_DOMAIN \"$(shell test `uname -s` = "Linux" && dnsdomainname || domainname)\"\n" >> $(obj)/build.h
  95         $(Q)printf "\n" >> $(obj)/build.h
  96         $(Q)printf "#define ZEXOS_ARCH \"$(ARCH)\"\n" >> $(obj)/build.h
  97         $(Q)printf "#define ARCH_$(ARCH)\n" >> $(obj)/build.h
  98
  99 compilation:
 100         $(Q)make -C arch/main
 101         $(Q)make -C lib