kernel/Makefile

   1 # ZeX/OS makefile
   2 # Copyright (C) 2007 Alex Smith
   3 #               2008 Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4 #               2009 Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   5 #               2010 Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of version 2 of the GNU General Public License
   9 # as published by the Free Software Foundation.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License along
  17 # with this program; if not, write to the Free Software Foundation, Inc.,
  18 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19
  20 # This piece of code was borrowed from Exclaim
  21 # Thanks for Alex Smith
  22
  23 ZEXOS_VERSION = 0
  24 ZEXOS_PATCHLEVEL = 6
  25 ZEXOS_SUBLEVEL = 8
  26 ZEXOS_EXTRAVERSION =
  27 ZEXOS_CODENAME =
  28
  29 HOSTCC := gcc
  30 HOSTCXX := g++
  31
  32 src := $(shell pwd)
  33 obj := $(shell pwd)/build/$(ARCH)
  34 export src obj
  35
  36 ifneq ($(V),1)
  37         Q := @
  38 endif
  39
  40 # When ARCH is not defined, lets detect architecture
  41 ifeq ($(ARCH),)
  42         ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/x86_64/i386/)
  43 endif
  44
  45 KERNELVERSION = $(ZEXOS_VERSION).$(ZEXOS_PATCHLEVEL).$(ZEXOS_SUBLEVEL)$(ZEXOS_EXTRAVERSION)
  46 export KERNELVERSION
  47
  48 ifeq ($(strip $(wildcard .config)),)
  49
  50 all:
  51         @printf "Please run make menuconfig, xconfig, gconfig or config first.\n"
  52         @false
  53 else
  54
  55 include $(src)/.config
  56
  57 all: prepare $(obj)/config.h $(obj)/build.h compilation drivers
  58         @printf "  DONE\n"
  59
  60 endif
  61
  62 include utils/kconfig/Makefile
  63
  64 include kernel.mak
  65
  66 # prepare
  67 prepare:
  68         $(Q)if [ ! -d "$(obj)" ]; then mkdir -p $(obj); fi
  69         $(Q)if [ -e "$(src)/arch/main" ]; then rm $(src)/arch/main; fi
  70         $(Q)ln -s $(src)/arch/$(ARCH) $(src)/arch/main
  71         $(Q)if [ -e "$(src)/build/main" ]; then rm $(src)/build/main; fi
  72         $(Q)ln -s $(src)/build/$(ARCH) $(src)/build/main
  73         $(Q)if [ -e "$(src)/include/arch" ]; then rm $(src)/include/arch; fi
  74         $(Q)ln -s $(src)/arch/$(ARCH)/include $(src)/include/arch
  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
  99
 100 compilation:
 101         $(Q)make -C arch/main
 102         $(Q)make -C lib