1e2211743Swdenk# 2f9328639SMarian Balakowicz# (C) Copyright 2000-2006 3e2211743Swdenk# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4e2211743Swdenk# 5e2211743Swdenk# See file CREDITS for list of people who contributed to this 6e2211743Swdenk# project. 7e2211743Swdenk# 8e2211743Swdenk# This program is free software; you can redistribute it and/or 9e2211743Swdenk# modify it under the terms of the GNU General Public License as 10e2211743Swdenk# published by the Free Software Foundation; either version 2 of 11e2211743Swdenk# the License, or (at your option) any later version. 12e2211743Swdenk# 13e2211743Swdenk# This program is distributed in the hope that it will be useful, 14e2211743Swdenk# but WITHOUT ANY WARRANTY; without even the implied warranty of 15e2211743Swdenk# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16e2211743Swdenk# GNU General Public License for more details. 17e2211743Swdenk# 18e2211743Swdenk# You should have received a copy of the GNU General Public License 19e2211743Swdenk# along with this program; if not, write to the Free Software 20e2211743Swdenk# Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21e2211743Swdenk# MA 02111-1307 USA 22e2211743Swdenk# 23e2211743Swdenk 24e2211743Swdenk######################################################################### 25e2211743Swdenk 26f9328639SMarian Balakowiczifneq ($(OBJTREE),$(SRCTREE)) 27f9328639SMarian Balakowiczifeq ($(CURDIR),$(SRCTREE)) 28f9328639SMarian Balakowiczdir := 29f9328639SMarian Balakowiczelse 30f9328639SMarian Balakowiczdir := $(subst $(SRCTREE)/,,$(CURDIR)) 31f9328639SMarian Balakowiczendif 32f9328639SMarian Balakowicz 33f9328639SMarian Balakowiczobj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) 34f9328639SMarian Balakowiczsrc := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) 35f9328639SMarian Balakowicz 36f9328639SMarian Balakowicz$(shell mkdir -p $(obj)) 37f9328639SMarian Balakowiczelse 38f9328639SMarian Balakowiczobj := 39f9328639SMarian Balakowiczsrc := 40f9328639SMarian Balakowiczendif 41f9328639SMarian Balakowicz 42592c5cabSwdenk# clean the slate ... 43592c5cabSwdenkPLATFORM_RELFLAGS = 44592c5cabSwdenkPLATFORM_CPPFLAGS = 45592c5cabSwdenkPLATFORM_LDFLAGS = 46592c5cabSwdenk 47e2211743Swdenk######################################################################### 48e2211743Swdenk 49d984fed0SScott WoodHOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \ 50d984fed0SScott Wood $(HOSTCPPFLAGS) 51d984fed0SScott WoodHOSTSTRIP = strip 52d984fed0SScott Wood 53d984fed0SScott Wood# 54d984fed0SScott Wood# Mac OS X / Darwin's C preprocessor is Apple specific. It 55d984fed0SScott Wood# generates numerous errors and warnings. We want to bypass it 56d984fed0SScott Wood# and use GNU C's cpp. To do this we pass the -traditional-cpp 57d984fed0SScott Wood# option to the compiler. Note that the -traditional-cpp flag 58d984fed0SScott Wood# DOES NOT have the same semantics as GNU C's flag, all it does 59d984fed0SScott Wood# is invoke the GNU preprocessor in stock ANSI/ISO C fashion. 60d984fed0SScott Wood# 61d984fed0SScott Wood# Apple's linker is similar, thanks to the new 2 stage linking 62d984fed0SScott Wood# multiple symbol definitions are treated as errors, hence the 63d984fed0SScott Wood# -multiply_defined suppress option to turn off this error. 64d984fed0SScott Wood# 65d984fed0SScott Wood 664cda4378SMike Frysingerifeq ($(HOSTOS),darwin) 67e2211743SwdenkHOSTCC = cc 68d984fed0SScott WoodHOSTCFLAGS += -traditional-cpp 69d984fed0SScott WoodHOSTLDFLAGS += -multiply_defined suppress 70e2211743Swdenkelse 71e2211743SwdenkHOSTCC = gcc 72e2211743Swdenkendif 73d984fed0SScott Wood 74d984fed0SScott Woodifeq ($(HOSTOS),cygwin) 75d984fed0SScott WoodHOSTCFLAGS += -ansi 76d984fed0SScott Woodendif 77d984fed0SScott Wood 78d984fed0SScott Wood# We build some files with extra pedantic flags to try to minimize things 79d984fed0SScott Wood# that won't build on some weird host compiler -- though there are lots of 80d984fed0SScott Wood# exceptions for files that aren't complaint. 81d984fed0SScott Wood 82d984fed0SScott WoodHOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS)) 83d984fed0SScott WoodHOSTCFLAGS += -pedantic 84e2211743Swdenk 85e2211743Swdenk######################################################################### 861820d4c7SWolfgang Denk# 871820d4c7SWolfgang Denk# Option checker (courtesy linux kernel) to ensure 881820d4c7SWolfgang Denk# only supported compiler options are used 891820d4c7SWolfgang Denk# 901820d4c7SWolfgang Denkcc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ 911820d4c7SWolfgang Denk > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) 92e2211743Swdenk 93e2211743Swdenk# 94e2211743Swdenk# Include the make variables (CC, etc...) 95e2211743Swdenk# 96e2211743SwdenkAS = $(CROSS_COMPILE)as 97e2211743SwdenkLD = $(CROSS_COMPILE)ld 98e2211743SwdenkCC = $(CROSS_COMPILE)gcc 99e2211743SwdenkCPP = $(CC) -E 100e2211743SwdenkAR = $(CROSS_COMPILE)ar 101e2211743SwdenkNM = $(CROSS_COMPILE)nm 10294a91e24SMike FrysingerLDR = $(CROSS_COMPILE)ldr 103e2211743SwdenkSTRIP = $(CROSS_COMPILE)strip 104e2211743SwdenkOBJCOPY = $(CROSS_COMPILE)objcopy 105e2211743SwdenkOBJDUMP = $(CROSS_COMPILE)objdump 106e2211743SwdenkRANLIB = $(CROSS_COMPILE)RANLIB 107e2211743Swdenk 108c4e5f52aSWolfgang Denk######################################################################### 109c4e5f52aSWolfgang Denk 110c4e5f52aSWolfgang Denk# Load generated board configuration 111c4e5f52aSWolfgang Denksinclude $(OBJTREE)/include/autoconf.mk 112c4e5f52aSWolfgang Denk 11303b7004dSPeter Tyser# Some architecture config.mk files need to know what CPUDIR is set to, 11403b7004dSPeter Tyser# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. 115*8d1f2682SPeter Tyser# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains 116*8d1f2682SPeter Tyser# CPU-specific code. 117*8d1f2682SPeter TyserCPUDIR=arch/$(ARCH)/cpu/$(CPU) 118*8d1f2682SPeter Tyserifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR))) 119*8d1f2682SPeter TyserCPUDIR=arch/$(ARCH)/cpu 120*8d1f2682SPeter Tyserendif 12103b7004dSPeter Tyser 122ea0364f1SPeter Tysersinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules 12303b7004dSPeter Tysersinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules 12403b7004dSPeter Tyser 125c4e5f52aSWolfgang Denkifdef SOC 12603b7004dSPeter Tysersinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules 127c4e5f52aSWolfgang Denkendif 128c4e5f52aSWolfgang Denkifdef VENDOR 129c4e5f52aSWolfgang DenkBOARDDIR = $(VENDOR)/$(BOARD) 130c4e5f52aSWolfgang Denkelse 131c4e5f52aSWolfgang DenkBOARDDIR = $(BOARD) 132c4e5f52aSWolfgang Denkendif 133c4e5f52aSWolfgang Denkifdef BOARD 134c4e5f52aSWolfgang Denksinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules 135c4e5f52aSWolfgang Denkendif 136c4e5f52aSWolfgang Denk 137c4e5f52aSWolfgang Denk######################################################################### 138c4e5f52aSWolfgang Denk 1391954be6eSWolfgang Denkifneq (,$(findstring s,$(MAKEFLAGS))) 1401954be6eSWolfgang DenkARFLAGS = cr 1411954be6eSWolfgang Denkelse 1422b208f53SWolfgang DenkARFLAGS = crv 1431954be6eSWolfgang Denkendif 144e2211743SwdenkRELFLAGS= $(PLATFORM_RELFLAGS) 145e2211743SwdenkDBGFLAGS= -g # -DDEBUG 146e2211743SwdenkOPTFLAGS= -Os #-fomit-frame-pointer 1476dd652faSwdenkifndef LDSCRIPT 1484aeb251fSwdenk#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug 149887e2ec9SStefan Roeseifeq ($(CONFIG_NAND_U_BOOT),y) 150887e2ec9SStefan RoeseLDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds 151887e2ec9SStefan Roeseelse 152e2211743SwdenkLDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds 1536dd652faSwdenkendif 154887e2ec9SStefan Roeseendif 1556dd652faSwdenkOBJCFLAGS += --gap-fill=0xff 156e2211743Swdenk 157b783edaeSwdenkgccincdir := $(shell $(CC) -print-file-name=include) 158b783edaeSwdenk 159e2211743SwdenkCPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ 160161b2af4SMike Frysinger -D__KERNEL__ 161161b2af4SMike Frysingerifneq ($(TEXT_BASE),) 162161b2af4SMike FrysingerCPPFLAGS += -DTEXT_BASE=$(TEXT_BASE) 163161b2af4SMike Frysingerendif 164f9328639SMarian Balakowicz 1656c97a20dSKumar Galaifneq ($(RESET_VECTOR_ADDRESS),) 1666c97a20dSKumar GalaCPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS) 1676c97a20dSKumar Galaendif 1686c97a20dSKumar Gala 169f9328639SMarian Balakowiczifneq ($(OBJTREE),$(SRCTREE)) 170f9328639SMarian BalakowiczCPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include 171f9328639SMarian Balakowiczendif 172f9328639SMarian Balakowicz 173f9328639SMarian BalakowiczCPPFLAGS += -I$(TOPDIR)/include 174f9328639SMarian BalakowiczCPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ 175f9328639SMarian Balakowicz -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) 176e2211743Swdenk 177e2211743Swdenkifdef BUILD_TAG 178e2211743SwdenkCFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ 179e2211743Swdenk -DBUILD_TAG='"$(BUILD_TAG)"' 180e2211743Swdenkelse 181e2211743SwdenkCFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes 182e2211743Swdenkendif 183e2211743Swdenk 18428eab0d7SHaavard SkinnemoenCFLAGS += $(call cc-option,-fno-stack-protector) 18528eab0d7SHaavard Skinnemoen 186c40b2956Swdenk# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9) 187c40b2956Swdenk# this option have to be placed behind -Wall -- that's why it is here 188c40b2956Swdenkifeq ($(ARCH),nios) 189c40b2956Swdenkifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9) 190e4cc71aaSwdenkCFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs 191c40b2956Swdenkendif 192c40b2956Swdenkendif 193c40b2956Swdenk 194e11887a7SHaavard Skinnemoen# $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format> 195e11887a7SHaavard Skinnemoen# option to the assembler. 196e11887a7SHaavard SkinnemoenAFLAGS_DEBUG := 197b62fa913SMarian Balakowicz 198483a0cf8SMarian Balakowicz# turn jbsr into jsr for m68k 199483a0cf8SMarian Balakowiczifeq ($(ARCH),m68k) 200483a0cf8SMarian Balakowiczifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) 201483a0cf8SMarian BalakowiczAFLAGS_DEBUG := -Wa,-gstabs,-S 202483a0cf8SMarian Balakowiczendif 203483a0cf8SMarian Balakowiczendif 204b62fa913SMarian Balakowicz 205e2211743SwdenkAFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) 206e2211743Swdenk 2071aada9cdSWolfgang DenkLDFLAGS += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS) 208161b2af4SMike Frysingerifneq ($(TEXT_BASE),) 209161b2af4SMike FrysingerLDFLAGS += -Ttext $(TEXT_BASE) 210161b2af4SMike Frysingerendif 211e2211743Swdenk 212e2211743Swdenk# Location of a usable BFD library, where we define "usable" as 213e2211743Swdenk# "built for ${HOST}, supports ${TARGET}". Sensible values are 214e2211743Swdenk# - When cross-compiling: the root of the cross-environment 215e2211743Swdenk# - Linux/ppc (native): /usr 216e2211743Swdenk# - NetBSD/ppc (native): you lose ... (must extract these from the 217e2211743Swdenk# binutils build directory, plus the native and U-Boot include 218e2211743Swdenk# files don't like each other) 219e2211743Swdenk# 220e2211743Swdenk# So far, this is used only by tools/gdb/Makefile. 221e2211743Swdenk 2224cda4378SMike Frysingerifeq ($(HOSTOS),darwin) 223e2211743SwdenkBFD_ROOT_DIR = /usr/local/tools 224e2211743Swdenkelse 225ea909b76Swdenkifeq ($(HOSTARCH),$(ARCH)) 226ea909b76Swdenk# native 227ea909b76SwdenkBFD_ROOT_DIR = /usr 228ea909b76Swdenkelse 229e2211743Swdenk#BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 230e2211743Swdenk#BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 231e2211743SwdenkBFD_ROOT_DIR = /opt/powerpc 232e2211743Swdenkendif 233ea909b76Swdenkendif 234e2211743Swdenk 235e2211743Swdenk######################################################################### 236e2211743Swdenk 237d984fed0SScott Woodexport HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \ 238434c51a5SPeter Tyser AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE 239e2211743Swdenkexport TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS 240e2211743Swdenk 241e2211743Swdenk######################################################################### 242e2211743Swdenk 2435ec5529bSMike Frysinger# Allow boards to use custom optimize flags on a per dir/file basis 24489f39e17SPeter TyserBCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) 245f9328639SMarian Balakowicz$(obj)%.s: %.S 24689f39e17SPeter Tyser $(CPP) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \ 24789f39e17SPeter Tyser -o $@ $< 248f9328639SMarian Balakowicz$(obj)%.o: %.S 24989f39e17SPeter Tyser $(CC) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \ 25089f39e17SPeter Tyser -o $@ $< -c 251f9328639SMarian Balakowicz$(obj)%.o: %.c 25289f39e17SPeter Tyser $(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \ 25389f39e17SPeter Tyser -o $@ $< -c 25431f30c9eSMike Frysinger$(obj)%.i: %.c 25589f39e17SPeter Tyser $(CPP) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \ 25689f39e17SPeter Tyser -o $@ $< -c 25731f30c9eSMike Frysinger$(obj)%.s: %.c 25889f39e17SPeter Tyser $(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \ 25989f39e17SPeter Tyser -o $@ $< -c -S 260f9328639SMarian Balakowicz 261e2211743Swdenk######################################################################### 262