X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=config.mk;h=7ce554ecfec32beb8479c353c40b2b31dfdcf7f3;hb=54ca033b0f7f7cc627e191049fc6bdef79b8f3b9;hp=62fc1d5ddbc1bf02a8ce73145fa490c87e67711e;hpb=fb98f94fcbdf0adef6650f6a95ac6e77b0f6e63e;p=u-boot diff --git a/config.mk b/config.mk index 62fc1d5ddb..7ce554ecfe 100644 --- a/config.mk +++ b/config.mk @@ -12,7 +12,7 @@ # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License @@ -44,44 +44,51 @@ PLATFORM_RELFLAGS = PLATFORM_CPPFLAGS = PLATFORM_LDFLAGS = -# -# 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. -# -# [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 +HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ + $(HOSTCPPFLAGS) +HOSTSTRIP = strip -ifeq ($(ARCH),arm) -ifeq ($(CROSS_COMPILE),powerpc-netbsd-) -PLATFORM_CPPFLAGS+= -D__ARM__ -endif -ifeq ($(CROSS_COMPILE),powerpc-openbsd-) -PLATFORM_CPPFLAGS+= -D__ARM__ -endif -endif +# +# 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. +# -######################################################################### +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 '.') -CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ - else if [ -x /bin/bash ]; then echo /bin/bash; \ - else echo sh; fi ; fi) +os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \ + $(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;) -ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) -HOSTCC = cc +# Snow Leopards build environment has no longer restrictions as described above +HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc") +HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp") +HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress") else HOSTCC = gcc endif -HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -HOSTSTRIP = strip + +ifeq ($(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. + +HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS)) +HOSTCFLAGS += -pedantic ######################################################################### # @@ -110,15 +117,22 @@ RANLIB = $(CROSS_COMPILE)RANLIB # Load generated board configuration sinclude $(OBJTREE)/include/autoconf.mk - -ifdef ARCH -sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules -endif -ifdef CPU -sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules +sinclude $(OBJTREE)/include/config.mk + +# Some architecture config.mk files need to know what CPUDIR is set to, +# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. +# Check if arch/$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 $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules +sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules endif ifdef VENDOR BOARDDIR = $(VENDOR)/$(BOARD) @@ -139,22 +153,49 @@ endif RELFLAGS= $(PLATFORM_RELFLAGS) DBGFLAGS= -g # -DDEBUG OPTFLAGS= -Os #-fomit-frame-pointer + +# If board code explicitly specified LDSCRIPT or CONFIG_SYS_LDSCRIPT, use +# that (or fail if absent). Otherwise, search for a linker script in a +# standard location. + 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 + #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug + ifdef CONFIG_SYS_LDSCRIPT + # need to strip off double quotes + LDSCRIPT := $(subst ",,$(CONFIG_SYS_LDSCRIPT)) + endif endif + +ifndef LDSCRIPT + ifeq ($(CONFIG_NAND_U_BOOT),y) + LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds + ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-nand.lds + endif + endif + ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds + endif + ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot.lds + endif + ifeq ($(wildcard $(LDSCRIPT)),) +$(error could not find linker script) + endif endif + OBJCFLAGS += --gap-fill=0xff gccincdir := $(shell $(CC) -print-file-name=include) CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ -D__KERNEL__ -ifneq ($(TEXT_BASE),) -CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE) +ifneq ($(CONFIG_SYS_TEXT_BASE),) +CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) +endif + +ifneq ($(RESET_VECTOR_ADDRESS),) +CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS) endif ifneq ($(OBJTREE),$(SRCTREE)) @@ -162,7 +203,7 @@ CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include endif CPPFLAGS += -I$(TOPDIR)/include -CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ +CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) ifdef BUILD_TAG @@ -172,13 +213,7 @@ else 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) # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g # option to the assembler. @@ -193,9 +228,12 @@ endif AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) -LDFLAGS += -Bstatic -T $(LDSCRIPT) $(PLATFORM_LDFLAGS) -ifneq ($(TEXT_BASE),) -LDFLAGS += -Ttext $(TEXT_BASE) +LDFLAGS += $(PLATFORM_LDFLAGS) +LDFLAGS_FINAL += -Bstatic + +LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL) +ifneq ($(CONFIG_SYS_TEXT_BASE),) +LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) endif # Location of a usable BFD library, where we define "usable" as @@ -208,7 +246,7 @@ endif # # So far, this is used only by tools/gdb/Makefile. -ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) +ifeq ($(HOSTOS),darwin) BFD_ROOT_DIR = /usr/local/tools else ifeq ($(HOSTARCH),$(ARCH)) @@ -221,36 +259,34 @@ BFD_ROOT_DIR = /opt/powerpc 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 TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS +export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \ + AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE +export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS ######################################################################### -ifndef REMOTE_BUILD - -%.s: %.S - $(CPP) $(AFLAGS) -o $@ $< -%.o: %.S - $(CC) $(AFLAGS) -c -o $@ $< -%.o: %.c - $(CC) $(CFLAGS) -c -o $@ $< - -else - +# Allow boards to use custom optimize flags on a per dir/file basis +BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) +ALL_AFLAGS = $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) +ALL_CFLAGS = $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) $(obj)%.s: %.S - $(CPP) $(AFLAGS) -o $@ $< + $(CPP) $(ALL_AFLAGS) -o $@ $< $(obj)%.o: %.S - $(CC) $(AFLAGS) -c -o $@ $< + $(CC) $(ALL_AFLAGS) -o $@ $< -c $(obj)%.o: %.c - $(CC) $(CFLAGS) -c -o $@ $< -endif + $(CC) $(ALL_CFLAGS) -o $@ $< -c +$(obj)%.i: %.c + $(CPP) $(ALL_CFLAGS) -o $@ $< -c +$(obj)%.s: %.c + $(CC) $(ALL_CFLAGS) -o $@ $< -c -S + +######################################################################### + +# If the list of objects to link is empty, just create an empty built-in.o +cmd_link_o_target = $(if $(strip $1),\ + $(LD) $(LDFLAGS) -r -o $@ $1,\ + rm -f $@; $(AR) rcs $@ ) #########################################################################