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
|
# Rules.make for uClibc
#
# This file contains rules which are shared between multiple Makefiles. All
# normal configuration options live in the file named "Config". You probably
# should not mess with this file unless you know what you are doing...
#
# 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
# If you are running a cross compiler, you may want to set this
# to something more interesting... Target architecture is determined
# by asking this compiler what arch it compiles stuff for.
CROSS=
CC = $(CROSS)gcc
AR = $(CROSS)ar
LD = $(CROSS)ld
NM = $(CROSS)nm
STRIPTOOL = $(CROSS)strip
#STRIPTOOL = /bin/true
# Select the compiler needed to build binaries for your development system
NATIVE_CC = gcc
NATIVE_CFLAGS:=-O2 -Wall
# Be sure to update include/features.h when changing this...
MAJOR_VERSION:=0
MINOR_VERSION:=9
SUBLEVEL:=15
VERSION:=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL)
# Ensure consistent filename sort order
LC_COLLATE:= C
export MAJOR_VERSION MINOR_VERSION SUBLEVEL VERSION LC_COLLATE
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/$(LIBNAME)
LIBGCC:=$(shell $(CC) $(LIBGCC_CFLAGS) -print-libgcc-file-name)
LIBGCC_DIR:=$(dir $(LIBGCC))
# Pull in the user's uClibc configuration
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
include_config := 1
-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)
NATIVE_ARCH:= $(shell uname -m | sed \
-e 's/i.86/i386/' \
-e 's/sparc.*/sparc/' \
-e 's/arm.*/arm/g' \
-e 's/m68k.*/m68k/' \
-e 's/ppc/powerpc/g' \
-e 's/v850.*/v850/g' \
-e 's/sh[234].*/sh/' \
-e 's/mips.*/mips/' \
)
ifeq ($(strip $(TARGET_ARCH)),)
TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \
-e 's/i.86/i386/' \
-e 's/sparc.*/sparc/' \
-e 's/arm.*/arm/g' \
-e 's/m68k.*/m68k/' \
-e 's/ppc/powerpc/g' \
-e 's/v850.*/v850/g' \
-e 's/sh[234]/sh/' \
-e 's/mips.*/mips/' \
-e 's/cris.*/cris/' \
)
endif
export TARGET_ARCH
ARFLAGS:=r
# use '-Os' optimization if available, else use -O2, allow Config to override
OPTIMIZATION:=
OPTIMIZATION+=$(call check_gcc,-Os,-O2)
# 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 $(TARGET_ARCH)),arm)
OPTIMIZATION+=-fstrict-aliasing
CPU_CFLAGS-$(CONFIG_GENERIC_ARM):=
CPU_CFLAGS-$(CONFIG_ARM7TDMI):="-march=arm7tdmi"
CPU_CFLAGS-$(CONFIG_STRONGARM):="-march=strongarm"
CPU_CFLAGS-$(CONFIG_XSCALE):="$(call check_gcc,-march=xscale,-march=strongarm)"
endif
ifeq ($(strip $(TARGET_ARCH)),sh)
OPTIMIZATION+=-fstrict-aliasing
CPU_CFLAGS-$(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"
CPU_CFLAGS-$(CONFIG_SH5)+="-m5"
endif
# Add a bunch of extra pedantic annoyingly strict checks
WARNINGS+=-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing
# Some nice CFLAGS to work with
CFLAGS:=$(WARNINGS) $(OPTIMIZATION) -fno-builtin -nostdinc $(CPUFLAGS) \
-D_LIBC $(CPU_CFLAGS-y) $(ARCH_CFLAGS) -I$(TOPDIR)include -I.
# 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")
ifeq ($(strip $(DODEBUG)),y)
CFLAGS += -g
LDFLAGS:= -shared --warn-common --warn-once -z combreloc
STRIPTOOL:= true -Since_we_are_debugging
else
CFLAGS += -DNDEBUG #-fomit-frame-pointer
LDFLAGS := -s -shared --warn-common --warn-once -z combreloc
endif
ifeq ($(strip $(HAVE_SHARED)),y)
LIBRARY_CACHE:=#-DUSE_CACHE
ifeq ($(strip $(BUILD_UCLIBC_LDSO)),y)
LDSO:=$(TOPDIR)lib/$(UCLIBC_LDSO)
DYNAMIC_LINKER:=$(SHARED_LIB_LOADER_PATH)/$(UCLIBC_LDSO)
BUILD_DYNAMIC_LINKER:=$(shell cd $(TOPDIR) && pwd)/lib/$(UCLIBC_LDSO)
else
LDSO:=$(SYSTEM_LDSO)
DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
BUILD_DYNAMIC_LINKER:=/lib/$(notdir $(SYSTEM_LDSO))
endif
endif
ifeq ($(strip $(DOPIC)),y)
CFLAGS += -fPIC
endif
ifneq ($(strip $(HAS_FPU)),y)
CFLAGS += -msoft-float
endif
# TARGET_PREFIX is the directory under which which the uClibc runtime
# environment will be installed and used on the target system. The
# result will look something like the following:
# TARGET_PREFIX/
# lib/ <contains all runtime and static libs>
# usr/lib/ <this directory is searched for runtime libs>
# etc/ <weher the shared library cache and configuration
# information go if you enabled LIBRARY_CACHE above>
# Very few people will need to change this value from the default...
TARGET_PREFIX = /
|
