kernel/Makefile

   1 # ZeX/OS makefile
   2 # Copyright (C) 2007 Alex Smith
   3 #               2008 Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of version 2 of the GNU General Public License
   7 # as published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along
  15 # with this program; if not, write to the Free Software Foundation, Inc.,
  16 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17
  18 # This piece of code was borrowed from Exclaim
  19 # Thanks for Alex Smith
  20
  21 ZEXOS_VERSION = 0
  22 ZEXOS_PATCHLEVEL = 5
  23 ZEXOS_SUBLEVEL = 8
  24 ZEXOS_EXTRAVERSION =
  25 ZEXOS_CODENAME =
  26
  27 HOSTCC := gcc
  28 HOSTCXX := g++
  29
  30 src := $(shell pwd)
  31 obj := $(shell pwd)/build/$(ARCH)
  32 export src obj
  33
  34 ifneq ($(V),1)
  35         Q := @
  36 endif
  37
  38 # When ARCH is not defined, lets detect architecture
  39 ifeq ($(ARCH),)
  40         ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/x86_64/i386/)
  41 endif
  42
  43 KERNELVERSION = $(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
  44 export KERNELVERSION
  45
  46 ifeq ($(strip $(wildcard .config)),)
  47
  48 all:
  49         @printf "Please run make menuconfig, xconfig, gconfig or config first.\n"
  50         @false
  51 else
  52
  53 include $(src)/.config
  54
  55 all: prepare $(obj)/config.h $(obj)/build.h drivers
  56         @printf "  DONE\n"
  57
  58 endif
  59
  60 include utils/kconfig/Makefile
  61
  62 include kernel.mak
  63
  64 # prepare
  65 prepare:
  66         $(Q)if [ ! -d "$(obj)" ]; then mkdir -p $(obj); fi
  67         $(Q)if [ -e "$(src)/arch/main" ]; then rm $(src)/arch/main; fi
  68         $(Q)ln -s $(src)/arch/$(ARCH) $(src)/arch/main
  69         $(Q)if [ -e "$(src)/build/main" ]; then rm $(src)/build/main; fi
  70         $(Q)ln -s $(src)/build/$(ARCH) $(src)/build/main
  71         $(Q)if [ -e "$(src)/include/arch" ]; then rm $(src)/include/arch; fi
  72         $(Q)ln -s $(src)/arch/$(ARCH)/include $(src)/include/arch
  73         $(Q)make -C arch/main
  74         $(Q)make -C lib
  75
  76 $(obj)/config.h: .config
  77         $(Q)make --no-print-directory silentoldconfig
  78         @printf "  CP      $(subst $(shell pwd)/,,$(obj)/config.h)\n"
  79         $(Q)cp $(src)/.tmpconfig.h $(obj)/config.h
  80
  81 # This is generated to build.h header file, which is needed to compilation
  82 $(obj)/build.h: Makefile
  83         @printf "  GEN     $(subst $(shell pwd)/,,$(obj)/build.h)\n"
  84         $(Q)printf "#define ZEXOS_MAJOR \"$(ZEXOS_VERSION)\"\n" > $(obj)/build.h
  85         $(Q)printf "#define ZEXOS_MINOR \"$(ZEXOS_PATCHLEVEL)\"\n" >> $(obj)/build.h
  86         $(Q)printf "#define ZEXOS_REVISION \"$(ZEXOS_SUBLEVEL)\"\n" >> $(obj)/build.h
  87         $(Q)printf "#define ZEXOS_EXTRAVER \"$(ZEXOS_EXTRAVERSION)\"\n" >> $(obj)/build.h
  88         $(Q)printf "#define ZEXOS_VERSION \"$(ZEXOS_KERNELVERSION)$(CONFIG_LOCALVERSION)\"\n" >> $(obj)/build.h
  89         $(Q)printf "#define ZEXOS_CODENAME \"$(ZEXOS_CODENAME)\"\n" >> $(obj)/build.h
  90         $(Q)printf "#define ZEXOS_DATE \"`LANG= date \"+%Y-%m-%d %H:%m:%S\"`\"\n" >> $(obj)/build.h
  91         $(Q)printf "\n" >> $(obj)/build.h
  92         $(Q)printf "#define ZEXOS_COMPILER \"$(shell LANG= $(CC) --version | head -n1)\"\n" >> $(obj)/build.h
  93         $(Q)printf "#define ZEXOS_COMPILE_BY \"$(shell PATH=$$PATH:/usr/ucb whoami)\"\n" >> $(obj)/build.h
  94         $(Q)printf "#define ZEXOS_COMPILE_HOST \"$(shell hostname)\"\n" >> $(obj)/build.h
  95         $(Q)printf "#define ZEXOS_COMPILE_DOMAIN \"$(shell test `uname -s` = "Linux" && dnsdomainname || domainname)\"\n" >> $(obj)/build.h
  96         $(Q)printf "\n" >> $(obj)/build.h
  97         $(Q)printf "#define ZEXOS_ARCH \"$(ARCH)\"\n" >> $(obj)/build.h
  98         $(Q)printf "#define ARCH_$(ARCH)\n" >> $(obj)/build.h