config.mk

   1 #
   2 # (C) Copyright 2000
   3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 #
   5 # See file CREDITS for list of people who contributed to this
   6 # project.
   7 #
   8 # This program is free software; you can redistribute it and/or
   9 # modify it under the terms of the GNU General Public License as
  10 # published by the Free Software Foundation; either version 2 of
  11 # the License, or (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 # MA 02111-1307 USA
  22 #
  23
  24 #########################################################################
  25
  26 #
  27 # When cross-compiling on NetBSD, we have to define __PPC__ or else we
  28 # will pick up a va_list declaration that is incompatible with the
  29 # actual argument lists emitted by the compiler.
  30 #
  31 # [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3]
  32
  33 ifeq ($(ARCH),ppc)
  34 ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
  35 PLATFORM_CPPFLAGS+= -D__PPC__
  36 endif
  37 ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
  38 PLATFORM_CPPFLAGS+= -D__PPC__
  39 endif
  40 endif
  41
  42 ifeq ($(ARCH),arm)
  43 ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
  44 PLATFORM_CPPFLAGS+= -D__ARM__
  45 endif
  46 ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
  47 PLATFORM_CPPFLAGS+= -D__ARM__
  48 endif
  49 endif
  50
  51 ifdef   ARCH
  52 sinclude $(TOPDIR)/$(ARCH)_config.mk    # include architecture dependend rules
  53 endif
  54 ifdef   CPU
  55 sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include  CPU  specific rules
  56 endif
  57 ifdef   VENDOR
  58 BOARDDIR = $(VENDOR)/$(BOARD)
  59 else
  60 BOARDDIR = $(BOARD)
  61 endif
  62 ifdef   BOARD
  63 sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk  # include board specific rules
  64 endif
  65
  66 #########################################################################
  67
  68 CONFIG_SHELL    := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
  69                     else if [ -x /bin/bash ]; then echo /bin/bash; \
  70                     else echo sh; fi ; fi)
  71
  72 ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
  73 HOSTCC          = cc
  74 else
  75 HOSTCC          = gcc
  76 endif
  77 HOSTCFLAGS      = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
  78 HOSTSTRIP       = strip
  79
  80 #########################################################################
  81
  82 #
  83 # Include the make variables (CC, etc...)
  84 #
  85 AS      = $(CROSS_COMPILE)as
  86 LD      = $(CROSS_COMPILE)ld
  87 CC      = $(CROSS_COMPILE)gcc
  88 CPP     = $(CC) -E
  89 AR      = $(CROSS_COMPILE)ar
  90 NM      = $(CROSS_COMPILE)nm
  91 STRIP   = $(CROSS_COMPILE)strip
  92 OBJCOPY = $(CROSS_COMPILE)objcopy
  93 OBJDUMP = $(CROSS_COMPILE)objdump
  94 RANLIB  = $(CROSS_COMPILE)RANLIB
  95
  96 RELFLAGS= $(PLATFORM_RELFLAGS)
  97 DBGFLAGS= -g #-DDEBUG
  98 OPTFLAGS= -Os #-fomit-frame-pointer
  99 #LDSCRIPT := board/$(BOARDDIR)/u-boot.lds.debug
 100 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
 101 OBJCFLAGS := --gap-fill=0xff
 102
 103 CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS)         \
 104         -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE)           \
 105         -I$(TOPDIR)/include                             \
 106         -fno-builtin                                    \
 107         -pipe $(PLATFORM_CPPFLAGS)
 108
 109 ifdef BUILD_TAG
 110 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
 111         -DBUILD_TAG='"$(BUILD_TAG)"'
 112 else
 113 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
 114 endif
 115
 116 AFLAGS_DEBUG := -Wa,-gstabs
 117 AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
 118
 119 LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
 120
 121 # Location of a usable BFD library, where we define "usable" as
 122 # "built for ${HOST}, supports ${TARGET}".  Sensible values are
 123 # - When cross-compiling: the root of the cross-environment
 124 # - Linux/ppc (native): /usr
 125 # - NetBSD/ppc (native): you lose ... (must extract these from the
 126 #   binutils build directory, plus the native and U-Boot include
 127 #   files don't like each other)
 128 #
 129 # So far, this is used only by tools/gdb/Makefile.
 130
 131 ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
 132 BFD_ROOT_DIR =          /usr/local/tools
 133 else
 134 #BFD_ROOT_DIR =         /LinuxPPC/CDK           # Linux/i386
 135 #BFD_ROOT_DIR =         /usr/pkg/cross          # NetBSD/i386
 136 #BFD_ROOT_DIR =         /usr                    # native
 137 BFD_ROOT_DIR =          /opt/powerpc
 138 endif
 139
 140 #########################################################################
 141
 142 export  CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
 143         AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \
 144         MAKE
 145 export  TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
 146
 147 #########################################################################
 148
 149 %.s:    %.S
 150         $(CPP) $(AFLAGS) -o $@ $(CURDIR)/$<
 151 %.o:    %.S
 152         $(CC) $(AFLAGS) -c -o $@ $(CURDIR)/$<
 153 %.o:    %.c
 154         $(CC) $(CFLAGS) -c -o $@ $<
 155
 156 #########################################################################