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e2211743 | 1 | # |
f9328639 | 2 | # (C) Copyright 2000-2006 |
e2211743 WD |
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 | ||
f9328639 MB |
26 | ifneq ($(OBJTREE),$(SRCTREE)) |
27 | ifeq ($(CURDIR),$(SRCTREE)) | |
28 | dir := | |
29 | else | |
30 | dir := $(subst $(SRCTREE)/,,$(CURDIR)) | |
31 | endif | |
32 | ||
33 | obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) | |
34 | src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) | |
35 | ||
36 | $(shell mkdir -p $(obj)) | |
37 | else | |
38 | obj := | |
39 | src := | |
40 | endif | |
41 | ||
592c5cab WD |
42 | # clean the slate ... |
43 | PLATFORM_RELFLAGS = | |
44 | PLATFORM_CPPFLAGS = | |
45 | PLATFORM_LDFLAGS = | |
46 | ||
e2211743 WD |
47 | # |
48 | # When cross-compiling on NetBSD, we have to define __PPC__ or else we | |
49 | # will pick up a va_list declaration that is incompatible with the | |
50 | # actual argument lists emitted by the compiler. | |
51 | # | |
52 | # [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3] | |
53 | ||
54 | ifeq ($(ARCH),ppc) | |
55 | ifeq ($(CROSS_COMPILE),powerpc-netbsd-) | |
56 | PLATFORM_CPPFLAGS+= -D__PPC__ | |
57 | endif | |
58 | ifeq ($(CROSS_COMPILE),powerpc-openbsd-) | |
59 | PLATFORM_CPPFLAGS+= -D__PPC__ | |
60 | endif | |
61 | endif | |
62 | ||
63 | ifeq ($(ARCH),arm) | |
64 | ifeq ($(CROSS_COMPILE),powerpc-netbsd-) | |
65 | PLATFORM_CPPFLAGS+= -D__ARM__ | |
66 | endif | |
67 | ifeq ($(CROSS_COMPILE),powerpc-openbsd-) | |
68 | PLATFORM_CPPFLAGS+= -D__ARM__ | |
69 | endif | |
70 | endif | |
71 | ||
0afe519a WD |
72 | ifeq ($(ARCH),blackfin) |
73 | PLATFORM_CPPFLAGS+= -D__BLACKFIN__ -mno-underscore | |
74 | endif | |
75 | ||
e2211743 WD |
76 | ifdef ARCH |
77 | sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules | |
78 | endif | |
79 | ifdef CPU | |
80 | sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules | |
81 | endif | |
1d9f4105 WD |
82 | ifdef SOC |
83 | sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules | |
84 | endif | |
e2211743 WD |
85 | ifdef VENDOR |
86 | BOARDDIR = $(VENDOR)/$(BOARD) | |
87 | else | |
88 | BOARDDIR = $(BOARD) | |
89 | endif | |
90 | ifdef BOARD | |
91 | sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules | |
92 | endif | |
93 | ||
94 | ######################################################################### | |
95 | ||
96 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
97 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
98 | else echo sh; fi ; fi) | |
99 | ||
100 | ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) | |
101 | HOSTCC = cc | |
102 | else | |
103 | HOSTCC = gcc | |
104 | endif | |
105 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer | |
106 | HOSTSTRIP = strip | |
107 | ||
108 | ######################################################################### | |
1820d4c7 WD |
109 | # |
110 | # Option checker (courtesy linux kernel) to ensure | |
111 | # only supported compiler options are used | |
112 | # | |
113 | cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ | |
9b880bd4 | 114 | > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) |
e2211743 WD |
115 | |
116 | # | |
117 | # Include the make variables (CC, etc...) | |
118 | # | |
119 | AS = $(CROSS_COMPILE)as | |
120 | LD = $(CROSS_COMPILE)ld | |
121 | CC = $(CROSS_COMPILE)gcc | |
122 | CPP = $(CC) -E | |
123 | AR = $(CROSS_COMPILE)ar | |
124 | NM = $(CROSS_COMPILE)nm | |
125 | STRIP = $(CROSS_COMPILE)strip | |
126 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
127 | OBJDUMP = $(CROSS_COMPILE)objdump | |
128 | RANLIB = $(CROSS_COMPILE)RANLIB | |
129 | ||
130 | RELFLAGS= $(PLATFORM_RELFLAGS) | |
9acb626f | 131 | DBGFLAGS= -g # -DDEBUG |
e2211743 | 132 | OPTFLAGS= -Os #-fomit-frame-pointer |
6dd652fa | 133 | ifndef LDSCRIPT |
4aeb251f | 134 | #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug |
e2211743 | 135 | LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds |
6dd652fa WD |
136 | endif |
137 | OBJCFLAGS += --gap-fill=0xff | |
e2211743 | 138 | |
b783edae WD |
139 | gccincdir := $(shell $(CC) -print-file-name=include) |
140 | ||
e2211743 WD |
141 | CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ |
142 | -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \ | |
f9328639 MB |
143 | |
144 | ifneq ($(OBJTREE),$(SRCTREE)) | |
145 | CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include | |
146 | endif | |
147 | ||
148 | CPPFLAGS += -I$(TOPDIR)/include | |
149 | CPPFLAGS += -fno-builtin -ffreestanding -nostdinc \ | |
150 | -isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) | |
e2211743 WD |
151 | |
152 | ifdef BUILD_TAG | |
153 | CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ | |
154 | -DBUILD_TAG='"$(BUILD_TAG)"' | |
155 | else | |
156 | CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes | |
157 | endif | |
158 | ||
c40b2956 WD |
159 | # avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9) |
160 | # this option have to be placed behind -Wall -- that's why it is here | |
161 | ifeq ($(ARCH),nios) | |
162 | ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9) | |
e4cc71aa | 163 | CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs |
c40b2956 WD |
164 | endif |
165 | endif | |
166 | ||
b62fa913 MB |
167 | AFLAGS_DEBUG := -Wa,-gstabs |
168 | ||
483a0cf8 MB |
169 | # turn jbsr into jsr for m68k |
170 | ifeq ($(ARCH),m68k) | |
171 | ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4) | |
172 | AFLAGS_DEBUG := -Wa,-gstabs,-S | |
173 | endif | |
483a0cf8 | 174 | endif |
b62fa913 | 175 | |
e2211743 WD |
176 | AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) |
177 | ||
7f6c2cbc | 178 | LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS) |
e2211743 WD |
179 | |
180 | # Location of a usable BFD library, where we define "usable" as | |
181 | # "built for ${HOST}, supports ${TARGET}". Sensible values are | |
182 | # - When cross-compiling: the root of the cross-environment | |
183 | # - Linux/ppc (native): /usr | |
184 | # - NetBSD/ppc (native): you lose ... (must extract these from the | |
185 | # binutils build directory, plus the native and U-Boot include | |
186 | # files don't like each other) | |
187 | # | |
188 | # So far, this is used only by tools/gdb/Makefile. | |
189 | ||
190 | ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) | |
191 | BFD_ROOT_DIR = /usr/local/tools | |
192 | else | |
ea909b76 WD |
193 | ifeq ($(HOSTARCH),$(ARCH)) |
194 | # native | |
195 | BFD_ROOT_DIR = /usr | |
196 | else | |
e2211743 WD |
197 | #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 |
198 | #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 | |
e2211743 WD |
199 | BFD_ROOT_DIR = /opt/powerpc |
200 | endif | |
ea909b76 | 201 | endif |
e2211743 | 202 | |
f046ccd1 EL |
203 | ifeq ($(PCI_CLOCK),PCI_66M) |
204 | CFLAGS := $(CFLAGS) -DPCI_66M | |
205 | endif | |
206 | ||
e2211743 WD |
207 | ######################################################################### |
208 | ||
209 | export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \ | |
210 | AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \ | |
211 | MAKE | |
212 | export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS | |
213 | ||
214 | ######################################################################### | |
215 | ||
f9328639 MB |
216 | ifndef REMOTE_BUILD |
217 | ||
e2211743 | 218 | %.s: %.S |
f9328639 | 219 | $(CPP) $(AFLAGS) -o $@ $< |
e2211743 | 220 | %.o: %.S |
f9328639 | 221 | $(CC) $(AFLAGS) -c -o $@ $< |
e2211743 WD |
222 | %.o: %.c |
223 | $(CC) $(CFLAGS) -c -o $@ $< | |
224 | ||
f9328639 MB |
225 | else |
226 | ||
227 | $(obj)%.s: %.S | |
228 | $(CPP) $(AFLAGS) -o $@ $< | |
229 | $(obj)%.o: %.S | |
230 | $(CC) $(AFLAGS) -c -o $@ $< | |
231 | $(obj)%.o: %.c | |
232 | $(CC) $(CFLAGS) -c -o $@ $< | |
233 | endif | |
234 | ||
e2211743 | 235 | ######################################################################### |