1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
# Rules.make for uClibc
#
# Copyright (C) 2000 by Lineo, inc.
# Copyright (C) 2000-2002 Erik Andersen <andersen@uclibc.org>
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU Library General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option) any
# later version.
#
# 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 GNU Library General Public License for more
# details.
#
# You should have received a copy of the GNU Library General Public License
# along with this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#--------------------------------------------------------
# This file contains rules which are shared between multiple Makefiles.
# All normal configuration options live in the file named ".config".
# Don't mess with this file unless you know what you are doing.
#--------------------------------------------------------
# If you are running a cross compiler, you will want to set 'CROSS'
# to something more interesting... Target architecture is determined
# by asking the CC compiler what arch it compiles things for, so unless
# your compiler is broken, you should not need to specify TARGET_ARCH
#
# Most people will set this stuff on the command line, i.e.
# make CROSS=arm-linux-
# will build uClibc for 'arm'.
ifndef CROSS
CROSS=
endif
CC= $(CROSS)gcc
AR= $(CROSS)ar
LD= $(CROSS)ld
NM= $(CROSS)nm
STRIPTOOL= $(CROSS)strip
INSTALL= install
LN= ln
RM= rm -f
# Select the compiler needed to build binaries for your development system
HOSTCC=gcc
HOSTCFLAGS=-O2 -Wall
#--------------------------------------------------------
# Nothing beyond this point should ever be touched by mere mortals.
# Unless you hang out with the gods, you should probably leave all
# this stuff alone.
MAJOR_VERSION:=0
MINOR_VERSION:=9
SUBLEVEL:=22
VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
# Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc.
LC_ALL:= C
export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_ALL
SHARED_FULLNAME:=libuClibc-$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL).so
SHARED_MAJORNAME:=libc.so.$(MAJOR_VERSION)
UCLIBC_LDSO:=ld-uClibc.so.$(MAJOR_VERSION)
LIBNAME:=libc.a
LIBC:=$(TOPDIR)libc/$(LIBNAME)
# Pull in the user's uClibc configuration
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
-include $(TOPDIR).config
endif
# A nifty macro to make testing gcc features easier
check_gcc=$(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \
then echo "$(1)"; else echo "$(2)"; fi)
# check if we have nawk, otherwise user awk
AWK:=$(shell if [ -x /usr/bin/nawk ]; then echo "/usr/bin/nawk"; \
else echo "/usr/bin/awk"; fi)
# Make certain these contain a final "/", but no "//"s.
RUNTIME_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(RUNTIME_PREFIX))))))
DEVEL_PREFIX:=$(strip $(subst //,/, $(subst ,/, $(subst ",, $(strip $(DEVEL_PREFIX))))))
export RUNTIME_PREFIX DEVEL_PREFIX
ARFLAGS:=r
OPTIMIZATION:=
PICFLAG:=-fPIC
# Some nice CPU specific optimizations
ifeq ($(strip $(TARGET_ARCH)),i386)
OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,)
OPTIMIZATION+=$(call check_gcc,-falign-jumps=0 -falign-loops=0,-malign-jumps=0 -malign-loops=0)
CPU_CFLAGS-$(CONFIG_386)+=-march=i386
CPU_CFLAGS-$(CONFIG_486)+=-march=i486
CPU_CFLAGS-$(CONFIG_586)+=-march=i586
CPU_CFLAGS-$(CONFIG_586MMX)+=$(call check_gcc,-march=pentium-mmx,-march=i586)
CPU_CFLAGS-$(CONFIG_686)+=-march=i686
CPU_CFLAGS-$(CONFIG_PENTIUMIII)+=$(call check_gcc,-march=pentium3,-march=i686)
CPU_CFLAGS-$(CONFIG_PENTIUM4)+=$(call check_gcc,-march=pentium4,-march=i686)
CPU_CFLAGS-$(CONFIG_K6)+=$(call check_gcc,-march=k6,-march=i586)
CPU_CFLAGS-$(CONFIG_K7)+=$(call check_gcc,-march=athlon,-malign-functions=4 -march=i686)
CPU_CFLAGS-$(CONFIG_CRUSOE)+=-march=i686 -malign-functions=0 -malign-jumps=0 -malign-loops=0
CPU_CFLAGS-$(CONFIG_WINCHIPC6)+=$(call check_gcc,-march=winchip-c6,-march=i586)
CPU_CFLAGS-$(CONFIG_WINCHIP2)+=$(call check_gcc,-march=winchip2,-march=i586)
CPU_CFLAGS-$(CONFIG_CYRIXIII)+=$(call check_gcc,-march=c3,-march=i586)
endif
ifeq ($(strip $(TARGET_ARCH)),arm)
OPTIMIZATION+=-fstrict-aliasing
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL
CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB
CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian
CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian
CPU_CFLAGS-$(CONFIG_GENERIC_ARM)+=
CPU_CFLAGS-$(CONFIG_ARM610)+=-mtune=arm610 -march=armv3
CPU_CFLAGS-$(CONFIG_ARM710)+=-mtune=arm710 -march=armv3
CPU_CFLAGS-$(CONFIG_ARM720T)+=-mtune=arm7tdmi -march=armv4
CPU_CFLAGS-$(CONFIG_ARM920T)+=-mtune=arm9tdmi -march=armv4
CPU_CFLAGS-$(CONFIG_ARM922T)+=-mtune=arm9tdmi -march=armv4
CPU_CFLAGS-$(CONFIG_ARM926T)+=-mtune=arm9tdmi -march=armv4
CPU_CFLAGS-$(CONFIG_ARM_SA110)+=-mtune=strongarm110 -march=armv4
CPU_CFLAGS-$(CONFIG_ARM_SA1100)+=-mtune=strongarm1100 -march=armv4
CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=$(call check_gcc,-mtune=xscale,-mtune=strongarm110)
CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv4 -Wa,-mcpu=xscale
endif
ifeq ($(strip $(TARGET_ARCH)),sh)
OPTIMIZATION+=-fstrict-aliasing
OPTIMIZATION+= $(call check_gcc,-mprefergot,)
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN)+=-EL
CPU_LDFLAGS-$(ARCH_BIG_ENDIAN)+=-EB
CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-ml
CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mb
CPU_CFLAGS-$(CONFIG_SH2)+=-m2
CPU_CFLAGS-$(CONFIG_SH3)+=-m3
CPU_CFLAGS-$(CONFIG_SH4)+=-m4
endif
ifeq ($(strip $(TARGET_ARCH)),sh64)
OPTIMIZATION+=-fstrict-aliasing
CPU_LDFLAGS-$(ARCH_LITTLE_ENDIAN):=-EL
CPU_LDFLAGS-$(ARCH_BIG_ENDIAN):=-EB
CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN):=-ml
CPU_CFLAGS-$(ARCH_BIG_ENDIAN):=-mb
CPU_CFLAGS-$(CONFIG_SH5)+=-m5-32media
endif
ifeq ($(strip $(TARGET_ARCH)),h8300)
CPU_LDFLAGS-$(CONFIG_H8300H)+= -ms8300h
CPU_LDFLAGS-$(CONFIG_H8S) += -ms8300s
CPU_CFLAGS-$(CONFIG_H8300H) += -mh -mint32 -fsigned-char
CPU_CFLAGS-$(CONFIG_H8S) += -ms -mint32 -fsigned-char
endif
ifeq ($(strip $(TARGET_ARCH)),cris)
CPU_LDFLAGS-$(CONFIG_CRIS)+=-mcrislinux
CPU_CFLAGS-$(CONFIG_CRIS)+=-mlinux
PICFLAG=-fpic
endif
# use '-Os' optimization if available, else use -O2, allow Config to override
OPTIMIZATION+=$(call check_gcc,-Os,-O2)
# Add a bunch of extra pedantic annoyingly strict checks
XWARNINGS=$(subst ",, $(strip $(WARNINGS))) -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
XARCH_CFLAGS=$(subst ",, $(strip $(ARCH_CFLAGS)))
CPU_CFLAGS=$(subst ",, $(strip $(CPU_CFLAGS-y)))
# Some nice CFLAGS to work with
CFLAGS=$(XWARNINGS) $(OPTIMIZATION) $(XARCH_CFLAGS) $(CPU_CFLAGS) \
-fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
ifeq ($(DODEBUG),y)
#CFLAGS += -g3
CFLAGS = $(XWARNINGS) -O0 -g3 $(CPU_CFLAGS) -fno-builtin -nostdinc -D_LIBC -I$(TOPDIR)include -I.
LDFLAGS:= $(CPU_LDFLAGS-y) -shared --warn-common --warn-once -z combreloc
STRIPTOOL:= true -Since_we_are_debugging
else
LDFLAGS := $(CPU_LDFLAGS-y) -s -shared --warn-common --warn-once -z combreloc
endif
# Sigh, some stupid versions of gcc can't seem to cope with '-iwithprefix include'
#CFLAGS+=-iwithprefix include
CFLAGS+=$(shell $(CC) -print-search-dirs | sed -ne "s/install: *\(.*\)/-I\1include/gp")
ifneq ($(DOASSERTS),y)
CFLAGS += -DNDEBUG
endif
ifeq ($(HAVE_SHARED),y)
LIBRARY_CACHE:=#-DUSE_CACHE
ifeq ($(BUILD_UCLIBC_LDSO),y)
LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO)
DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PREFIX)/$(UCLIBC_LDSO)
BUILD_DYNAMIC_LINKER:=$(shell cd $(TOPDIR) && pwd)/lib/$(UCLIBC_LDSO)
else
LDSO:=$(SYSTEM_LDSO)
DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO))))
BUILD_DYNAMIC_LINKER:=/lib/$(strip $(subst ",, $(notdir $(SYSTEM_LDSO))))
endif
endif
LDADD_LIBFLOAT=
ifeq ($(strip $(UCLIBC_HAS_SOFT_FLOAT)),y)
CFLAGS += $(call check_gcc,-msoft-float,)
#LDFLAGS+= -Wa,-mno-fpu
ifeq ($(strip $(TARGET_ARCH)),arm)
LDADD_LIBFLOAT=-lfloat
endif
endif
CFLAGS_NOPIC:=$(CFLAGS)
ifeq ($(DOPIC),y)
CFLAGS += $(PICFLAG)
endif
LIBGCC_CFLAGS ?= $(CFLAGS) $(CPU_CFLAGS-y)
LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
LIBGCC_DIR:=$(dir $(LIBGCC))
########################################
#
# uClinux shared lib support
#
ifeq ($(CONFIG_BINFMT_SHARED_FLAT),y)
# For the shared version of this, we specify no stack and its library ID
FLTFLAGS += -s 0
LIBID=1
export LIBID FLTFLAGS
SHARED_TARGET = lib/libc
endif
TARGET_ARCH:=$(strip $(subst ",, $(strip $(TARGET_ARCH))))
|
