#
-# (C) Copyright 2000
+# (C) Copyright 2000-2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
#########################################################################
+ifneq ($(OBJTREE),$(SRCTREE))
+ifeq ($(CURDIR),$(SRCTREE))
+dir :=
+else
+dir := $(subst $(SRCTREE)/,,$(CURDIR))
+endif
+
+obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
+src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
+
+$(shell mkdir -p $(obj))
+else
+obj :=
+src :=
+endif
+
# clean the slate ...
PLATFORM_RELFLAGS =
PLATFORM_CPPFLAGS =
PLATFORM_LDFLAGS =
+#########################################################################
+
+HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
+ $(HOSTCPPFLAGS)
+HOSTSTRIP = strip
+
#
-# When cross-compiling on NetBSD, we have to define __PPC__ or else we
-# will pick up a va_list declaration that is incompatible with the
-# actual argument lists emitted by the compiler.
+# Mac OS X / Darwin's C preprocessor is Apple specific. It
+# generates numerous errors and warnings. We want to bypass it
+# and use GNU C's cpp. To do this we pass the -traditional-cpp
+# option to the compiler. Note that the -traditional-cpp flag
+# DOES NOT have the same semantics as GNU C's flag, all it does
+# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
+#
+# Apple's linker is similar, thanks to the new 2 stage linking
+# multiple symbol definitions are treated as errors, hence the
+# -multiply_defined suppress option to turn off this error.
#
-# [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3]
-
-ifeq ($(ARCH),ppc)
-ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
-PLATFORM_CPPFLAGS+= -D__PPC__
-endif
-ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
-PLATFORM_CPPFLAGS+= -D__PPC__
-endif
-endif
-ifeq ($(ARCH),arm)
-ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
-PLATFORM_CPPFLAGS+= -D__ARM__
-endif
-ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
-PLATFORM_CPPFLAGS+= -D__ARM__
-endif
-endif
+ifeq ($(HOSTOS),darwin)
+# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
+DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
+DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
-ifeq ($(ARCH),blackfin)
-PLATFORM_CPPFLAGS+= -D__BLACKFIN__ -mno-underscore
-endif
+before-snow-leopard = $(shell if [ $(DARWIN_MAJOR_VERSION) -le 10 -a \
+ $(DARWIN_MINOR_VERSION) -le 5 ] ; then echo "$(1)"; else echo "$(2)"; fi ;)
-ifdef ARCH
-sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules
-endif
-ifdef CPU
-sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules
-endif
-ifdef SOC
-sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules
-endif
-ifdef VENDOR
-BOARDDIR = $(VENDOR)/$(BOARD)
+# Snow Leopards build environment has no longer restrictions as described above
+HOSTCC = $(call before-snow-leopard, "cc", "gcc")
+HOSTCFLAGS += $(call before-snow-leopard, "-traditional-cpp")
+HOSTLDFLAGS += $(call before-snow-leopard, "-multiply_defined suppress")
else
-BOARDDIR = $(BOARD)
+HOSTCC = gcc
endif
-ifdef BOARD
-sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
+
+ifeq ($(HOSTOS),cygwin)
+HOSTCFLAGS += -ansi
endif
-#########################################################################
+# We build some files with extra pedantic flags to try to minimize things
+# that won't build on some weird host compiler -- though there are lots of
+# exceptions for files that aren't complaint.
-CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
- else if [ -x /bin/bash ]; then echo /bin/bash; \
- else echo sh; fi ; fi)
-
-ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
-HOSTCC = cc
-else
-HOSTCC = gcc
-endif
-HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
-HOSTSTRIP = strip
+HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS))
+HOSTCFLAGS += -pedantic
#########################################################################
#
CPP = $(CC) -E
AR = $(CROSS_COMPILE)ar
NM = $(CROSS_COMPILE)nm
+LDR = $(CROSS_COMPILE)ldr
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
RANLIB = $(CROSS_COMPILE)RANLIB
+#########################################################################
+
+# Load generated board configuration
+sinclude $(OBJTREE)/include/autoconf.mk
+
+# Some architecture config.mk files need to know what CPUDIR is set to,
+# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
+# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
+# CPU-specific code.
+CPUDIR=arch/$(ARCH)/cpu/$(CPU)
+ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR)))
+CPUDIR=arch/$(ARCH)/cpu
+endif
+
+sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules
+sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules
+
+ifdef SOC
+sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
+endif
+ifdef VENDOR
+BOARDDIR = $(VENDOR)/$(BOARD)
+else
+BOARDDIR = $(BOARD)
+endif
+ifdef BOARD
+sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
+endif
+
+#########################################################################
+
+ifneq (,$(findstring s,$(MAKEFLAGS)))
+ARFLAGS = cr
+else
+ARFLAGS = crv
+endif
RELFLAGS= $(PLATFORM_RELFLAGS)
-DBGFLAGS= -g #-DDEBUG
+DBGFLAGS= -g # -DDEBUG
OPTFLAGS= -Os #-fomit-frame-pointer
ifndef LDSCRIPT
#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
+ifeq ($(CONFIG_NAND_U_BOOT),y)
+LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
+else
LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
endif
+endif
OBJCFLAGS += --gap-fill=0xff
gccincdir := $(shell $(CC) -print-file-name=include)
CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
- -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \
- -I$(TOPDIR)/include \
- -fno-builtin -ffreestanding -nostdinc -isystem \
- $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
+ -D__KERNEL__
+ifneq ($(TEXT_BASE),)
+CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
+endif
+
+ifneq ($(RESET_VECTOR_ADDRESS),)
+CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
+endif
+
+ifneq ($(OBJTREE),$(SRCTREE))
+CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
+endif
+
+CPPFLAGS += -I$(TOPDIR)/include
+CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
+ -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
ifdef BUILD_TAG
CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
endif
-# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
-# this option have to be placed behind -Wall -- that's why it is here
-ifeq ($(ARCH),nios)
-ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
-CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
-endif
-endif
+CFLAGS += $(call cc-option,-fno-stack-protector)
-AFLAGS_DEBUG := -Wa,-gstabs
+# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
+# option to the assembler.
+AFLAGS_DEBUG :=
# turn jbsr into jsr for m68k
ifeq ($(ARCH),m68k)
AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
-LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
+LDFLAGS += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS)
+ifneq ($(TEXT_BASE),)
+LDFLAGS += -Ttext $(TEXT_BASE)
+endif
# Location of a usable BFD library, where we define "usable" as
# "built for ${HOST}, supports ${TARGET}". Sensible values are
#
# So far, this is used only by tools/gdb/Makefile.
-ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
+ifeq ($(HOSTOS),darwin)
BFD_ROOT_DIR = /usr/local/tools
else
ifeq ($(HOSTARCH),$(ARCH))
endif
endif
-ifeq ($(PCI_CLOCK),PCI_66M)
-CFLAGS := $(CFLAGS) -DPCI_66M
-endif
-
#########################################################################
-export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
- AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \
- MAKE
+export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \
+ AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
#########################################################################
-%.s: %.S
- $(CPP) $(AFLAGS) -o $@ $(CURDIR)/$<
-%.o: %.S
- $(CC) $(AFLAGS) -c -o $@ $(CURDIR)/$<
-%.o: %.c
- $(CC) $(CFLAGS) -c -o $@ $<
+# Allow boards to use custom optimize flags on a per dir/file basis
+BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
+$(obj)%.s: %.S
+ $(CPP) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \
+ -o $@ $<
+$(obj)%.o: %.S
+ $(CC) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \
+ -o $@ $< -c
+$(obj)%.o: %.c
+ $(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+ -o $@ $< -c
+$(obj)%.i: %.c
+ $(CPP) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+ -o $@ $< -c
+$(obj)%.s: %.c
+ $(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+ -o $@ $< -c -S
#########################################################################
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