mirror of
https://github.com/u-boot/u-boot.git
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f534c7cdc6
Simply trying to include a basic header file like stdlib.h on OS X 10.5
and then building with -traditional-cpp fails with lots of errors like:
In file included from /usr/include/stdlib.h:63,
from test.c:3:
/usr/include/available.h:85: error: stray '#' in program
/usr/include/available.h:85: error: syntax error before numeric constant
/usr/include/available.h:86: error: stray '#' in program
In the past, I hadn't noticed because the old logic for these flags were
restricted to Darwin running on PowerPC systems while I'm running on an
Intel system. But after some recent clean ups and changes, the flag was
being applied to all Darwin systems and my host tools broke.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
262 lines
7.8 KiB
Makefile
262 lines
7.8 KiB
Makefile
#
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# (C) Copyright 2000-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# See file CREDITS for list of people who contributed to this
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# project.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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# MA 02111-1307 USA
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#
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#########################################################################
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ifneq ($(OBJTREE),$(SRCTREE))
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ifeq ($(CURDIR),$(SRCTREE))
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dir :=
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else
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dir := $(subst $(SRCTREE)/,,$(CURDIR))
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endif
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obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/)
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src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
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$(shell mkdir -p $(obj))
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else
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obj :=
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src :=
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endif
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# clean the slate ...
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PLATFORM_RELFLAGS =
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PLATFORM_CPPFLAGS =
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PLATFORM_LDFLAGS =
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#########################################################################
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HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
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$(HOSTCPPFLAGS)
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HOSTSTRIP = strip
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#
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# Mac OS X / Darwin's C preprocessor is Apple specific. It
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# generates numerous errors and warnings. We want to bypass it
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# and use GNU C's cpp. To do this we pass the -traditional-cpp
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# option to the compiler. Note that the -traditional-cpp flag
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# DOES NOT have the same semantics as GNU C's flag, all it does
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# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
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#
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# Apple's linker is similar, thanks to the new 2 stage linking
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# multiple symbol definitions are treated as errors, hence the
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# -multiply_defined suppress option to turn off this error.
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#
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ifeq ($(HOSTOS),darwin)
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# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
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DARWIN_MAJOR_VERSION = $(shell sw_vers -productVersion | cut -f 1 -d '.')
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DARWIN_MINOR_VERSION = $(shell sw_vers -productVersion | cut -f 2 -d '.')
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os_x_before = $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
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$(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
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# Snow Leopards build environment has no longer restrictions as described above
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HOSTCC = $(call os_x_before, 10, 5, "cc", "gcc")
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HOSTCFLAGS += $(call os_x_before, 10, 4, "-traditional-cpp")
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HOSTLDFLAGS += $(call os_x_before, 10, 5, "-multiply_defined suppress")
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else
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HOSTCC = gcc
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endif
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ifeq ($(HOSTOS),cygwin)
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HOSTCFLAGS += -ansi
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endif
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# We build some files with extra pedantic flags to try to minimize things
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# that won't build on some weird host compiler -- though there are lots of
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# exceptions for files that aren't complaint.
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HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS))
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HOSTCFLAGS += -pedantic
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#########################################################################
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#
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# Option checker (courtesy linux kernel) to ensure
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# only supported compiler options are used
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#
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cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
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> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
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#
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# Include the make variables (CC, etc...)
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#
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AS = $(CROSS_COMPILE)as
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LD = $(CROSS_COMPILE)ld
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CC = $(CROSS_COMPILE)gcc
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CPP = $(CC) -E
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AR = $(CROSS_COMPILE)ar
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NM = $(CROSS_COMPILE)nm
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LDR = $(CROSS_COMPILE)ldr
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STRIP = $(CROSS_COMPILE)strip
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OBJCOPY = $(CROSS_COMPILE)objcopy
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OBJDUMP = $(CROSS_COMPILE)objdump
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RANLIB = $(CROSS_COMPILE)RANLIB
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#########################################################################
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# Load generated board configuration
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sinclude $(OBJTREE)/include/autoconf.mk
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# Some architecture config.mk files need to know what CPUDIR is set to,
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# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
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# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
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# CPU-specific code.
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CPUDIR=arch/$(ARCH)/cpu/$(CPU)
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ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR)))
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CPUDIR=arch/$(ARCH)/cpu
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endif
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sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules
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sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules
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ifdef SOC
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sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
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endif
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ifdef VENDOR
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BOARDDIR = $(VENDOR)/$(BOARD)
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else
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BOARDDIR = $(BOARD)
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endif
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ifdef BOARD
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sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules
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endif
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#########################################################################
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ifneq (,$(findstring s,$(MAKEFLAGS)))
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ARFLAGS = cr
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else
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ARFLAGS = crv
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endif
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RELFLAGS= $(PLATFORM_RELFLAGS)
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DBGFLAGS= -g # -DDEBUG
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OPTFLAGS= -Os #-fomit-frame-pointer
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ifndef LDSCRIPT
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#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
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ifeq ($(CONFIG_NAND_U_BOOT),y)
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LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
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else
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LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
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endif
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endif
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OBJCFLAGS += --gap-fill=0xff
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gccincdir := $(shell $(CC) -print-file-name=include)
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CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \
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-D__KERNEL__
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ifneq ($(TEXT_BASE),)
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CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
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endif
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ifneq ($(RESET_VECTOR_ADDRESS),)
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CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
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endif
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ifneq ($(OBJTREE),$(SRCTREE))
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CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
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endif
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CPPFLAGS += -I$(TOPDIR)/include
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CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \
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-isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
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ifdef BUILD_TAG
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CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
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-DBUILD_TAG='"$(BUILD_TAG)"'
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else
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CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
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endif
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CFLAGS += $(call cc-option,-fno-stack-protector)
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# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
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# option to the assembler.
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AFLAGS_DEBUG :=
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# turn jbsr into jsr for m68k
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ifeq ($(ARCH),m68k)
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ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
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AFLAGS_DEBUG := -Wa,-gstabs,-S
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endif
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endif
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AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
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LDFLAGS += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS)
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ifneq ($(TEXT_BASE),)
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LDFLAGS += -Ttext $(TEXT_BASE)
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endif
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# Location of a usable BFD library, where we define "usable" as
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# "built for ${HOST}, supports ${TARGET}". Sensible values are
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# - When cross-compiling: the root of the cross-environment
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# - Linux/ppc (native): /usr
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# - NetBSD/ppc (native): you lose ... (must extract these from the
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# binutils build directory, plus the native and U-Boot include
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# files don't like each other)
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#
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# So far, this is used only by tools/gdb/Makefile.
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ifeq ($(HOSTOS),darwin)
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BFD_ROOT_DIR = /usr/local/tools
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else
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ifeq ($(HOSTARCH),$(ARCH))
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# native
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BFD_ROOT_DIR = /usr
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else
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#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386
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#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386
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BFD_ROOT_DIR = /opt/powerpc
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endif
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endif
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#########################################################################
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export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \
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AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
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export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
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#########################################################################
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# Allow boards to use custom optimize flags on a per dir/file basis
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BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
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$(obj)%.s: %.S
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$(CPP) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \
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-o $@ $<
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$(obj)%.o: %.S
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$(CC) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \
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-o $@ $< -c
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$(obj)%.o: %.c
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$(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
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-o $@ $< -c
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$(obj)%.i: %.c
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$(CPP) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
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-o $@ $< -c
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$(obj)%.s: %.c
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$(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
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-o $@ $< -c -S
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#########################################################################
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