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e2211743 WD |
1 | # |
2 | # (C) Copyright 2000 | |
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 | ||
592c5cab WD |
26 | # clean the slate ... |
27 | PLATFORM_RELFLAGS = | |
28 | PLATFORM_CPPFLAGS = | |
29 | PLATFORM_LDFLAGS = | |
30 | ||
e2211743 WD |
31 | # |
32 | # When cross-compiling on NetBSD, we have to define __PPC__ or else we | |
33 | # will pick up a va_list declaration that is incompatible with the | |
34 | # actual argument lists emitted by the compiler. | |
35 | # | |
36 | # [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3] | |
37 | ||
38 | ifeq ($(ARCH),ppc) | |
39 | ifeq ($(CROSS_COMPILE),powerpc-netbsd-) | |
40 | PLATFORM_CPPFLAGS+= -D__PPC__ | |
41 | endif | |
42 | ifeq ($(CROSS_COMPILE),powerpc-openbsd-) | |
43 | PLATFORM_CPPFLAGS+= -D__PPC__ | |
44 | endif | |
45 | endif | |
46 | ||
47 | ifeq ($(ARCH),arm) | |
48 | ifeq ($(CROSS_COMPILE),powerpc-netbsd-) | |
49 | PLATFORM_CPPFLAGS+= -D__ARM__ | |
50 | endif | |
51 | ifeq ($(CROSS_COMPILE),powerpc-openbsd-) | |
52 | PLATFORM_CPPFLAGS+= -D__ARM__ | |
53 | endif | |
54 | endif | |
55 | ||
56 | ifdef ARCH | |
57 | sinclude $(TOPDIR)/$(ARCH)_config.mk # include architecture dependend rules | |
58 | endif | |
59 | ifdef CPU | |
60 | sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules | |
61 | endif | |
1d9f4105 WD |
62 | ifdef SOC |
63 | sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules | |
64 | endif | |
e2211743 WD |
65 | ifdef VENDOR |
66 | BOARDDIR = $(VENDOR)/$(BOARD) | |
67 | else | |
68 | BOARDDIR = $(BOARD) | |
69 | endif | |
70 | ifdef BOARD | |
71 | sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules | |
72 | endif | |
73 | ||
74 | ######################################################################### | |
75 | ||
76 | CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ | |
77 | else if [ -x /bin/bash ]; then echo /bin/bash; \ | |
78 | else echo sh; fi ; fi) | |
79 | ||
80 | ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) | |
81 | HOSTCC = cc | |
82 | else | |
83 | HOSTCC = gcc | |
84 | endif | |
85 | HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer | |
86 | HOSTSTRIP = strip | |
87 | ||
88 | ######################################################################### | |
1820d4c7 WD |
89 | # |
90 | # Option checker (courtesy linux kernel) to ensure | |
91 | # only supported compiler options are used | |
92 | # | |
93 | cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \ | |
94 | > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;) | |
e2211743 WD |
95 | |
96 | # | |
97 | # Include the make variables (CC, etc...) | |
98 | # | |
99 | AS = $(CROSS_COMPILE)as | |
100 | LD = $(CROSS_COMPILE)ld | |
101 | CC = $(CROSS_COMPILE)gcc | |
102 | CPP = $(CC) -E | |
103 | AR = $(CROSS_COMPILE)ar | |
104 | NM = $(CROSS_COMPILE)nm | |
105 | STRIP = $(CROSS_COMPILE)strip | |
106 | OBJCOPY = $(CROSS_COMPILE)objcopy | |
107 | OBJDUMP = $(CROSS_COMPILE)objdump | |
108 | RANLIB = $(CROSS_COMPILE)RANLIB | |
109 | ||
110 | RELFLAGS= $(PLATFORM_RELFLAGS) | |
111 | DBGFLAGS= -g #-DDEBUG | |
112 | OPTFLAGS= -Os #-fomit-frame-pointer | |
6dd652fa | 113 | ifndef LDSCRIPT |
4aeb251f | 114 | #LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug |
e2211743 | 115 | LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds |
6dd652fa WD |
116 | endif |
117 | OBJCFLAGS += --gap-fill=0xff | |
e2211743 | 118 | |
b783edae WD |
119 | gccincdir := $(shell $(CC) -print-file-name=include) |
120 | ||
e2211743 WD |
121 | CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS) \ |
122 | -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \ | |
123 | -I$(TOPDIR)/include \ | |
27b207fd WD |
124 | -fno-builtin -ffreestanding -nostdinc -isystem \ |
125 | $(gccincdir) -pipe $(PLATFORM_CPPFLAGS) | |
e2211743 WD |
126 | |
127 | ifdef BUILD_TAG | |
128 | CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \ | |
129 | -DBUILD_TAG='"$(BUILD_TAG)"' | |
130 | else | |
131 | CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes | |
132 | endif | |
133 | ||
c40b2956 WD |
134 | # avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9) |
135 | # this option have to be placed behind -Wall -- that's why it is here | |
136 | ifeq ($(ARCH),nios) | |
137 | ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9) | |
e4cc71aa | 138 | CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs |
c40b2956 WD |
139 | endif |
140 | endif | |
141 | ||
e2211743 WD |
142 | AFLAGS_DEBUG := -Wa,-gstabs |
143 | AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS) | |
144 | ||
7f6c2cbc | 145 | LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS) |
e2211743 WD |
146 | |
147 | # Location of a usable BFD library, where we define "usable" as | |
148 | # "built for ${HOST}, supports ${TARGET}". Sensible values are | |
149 | # - When cross-compiling: the root of the cross-environment | |
150 | # - Linux/ppc (native): /usr | |
151 | # - NetBSD/ppc (native): you lose ... (must extract these from the | |
152 | # binutils build directory, plus the native and U-Boot include | |
153 | # files don't like each other) | |
154 | # | |
155 | # So far, this is used only by tools/gdb/Makefile. | |
156 | ||
157 | ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc) | |
158 | BFD_ROOT_DIR = /usr/local/tools | |
159 | else | |
ea909b76 WD |
160 | ifeq ($(HOSTARCH),$(ARCH)) |
161 | # native | |
162 | BFD_ROOT_DIR = /usr | |
163 | else | |
e2211743 WD |
164 | #BFD_ROOT_DIR = /LinuxPPC/CDK # Linux/i386 |
165 | #BFD_ROOT_DIR = /usr/pkg/cross # NetBSD/i386 | |
e2211743 WD |
166 | BFD_ROOT_DIR = /opt/powerpc |
167 | endif | |
ea909b76 | 168 | endif |
e2211743 | 169 | |
f046ccd1 EL |
170 | ifeq ($(PCI_CLOCK),PCI_66M) |
171 | CFLAGS := $(CFLAGS) -DPCI_66M | |
172 | endif | |
173 | ||
e2211743 WD |
174 | ######################################################################### |
175 | ||
176 | export CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \ | |
177 | AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \ | |
178 | MAKE | |
179 | export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS | |
180 | ||
181 | ######################################################################### | |
182 | ||
183 | %.s: %.S | |
184 | $(CPP) $(AFLAGS) -o $@ $(CURDIR)/$< | |
185 | %.o: %.S | |
186 | $(CC) $(AFLAGS) -c -o $@ $(CURDIR)/$< | |
187 | %.o: %.c | |
188 | $(CC) $(CFLAGS) -c -o $@ $< | |
189 | ||
190 | ######################################################################### |