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
|
# Selection options for crosstool-NG
if BR2_TOOLCHAIN_CTNG
choice
prompt "Crosstool-NG C library"
config BR2_TOOLCHAIN_CTNG_uClibc
bool "uClibc"
# Although eglibc can be configured to opt-out some features,
# let's not deal with that for the time being, it's complex...
config BR2_TOOLCHAIN_CTNG_eglibc
bool "eglibc"
select BR2_LARGEFILE
select BR2_INET_IPV6
select BR2_INET_RPC
select BR2_ENABLE_LOCALE
select BR2_USE_WCHAR
config BR2_TOOLCHAIN_CTNG_glibc
bool "glibc"
select BR2_LARGEFILE
select BR2_INET_IPV6
select BR2_INET_RPC
select BR2_ENABLE_LOCALE
select BR2_USE_WCHAR
endchoice # C library
config BR2_TOOLCHAIN_CTNG_LIBC
string
default "uClibc" if BR2_TOOLCHAIN_CTNG_uClibc
default "eglibc" if BR2_TOOLCHAIN_CTNG_eglibc
default "glibc" if BR2_TOOLCHAIN_CTNG_glibc
config BR2_TOOLCHAIN_CTNG_CONFIG
string "crosstool-NG configuration file to use"
default "toolchain/toolchain-crosstool-ng/crosstool-ng.config-uClibc" if BR2_TOOLCHAIN_CTNG_uClibc
default "toolchain/toolchain-crosstool-ng/crosstool-ng.config-eglibc" if BR2_TOOLCHAIN_CTNG_eglibc
default "toolchain/toolchain-crosstool-ng/crosstool-ng.config-glibc" if BR2_TOOLCHAIN_CTNG_glibc
help
Enter here the crosstool-NG's .config file to use.
To fine-tune your toolchain, you can also call:
make ctng-menuconfig
If unsure, keep the default value.
if BR2_TOOLCHAIN_CTNG_uClibc
comment "Toolchain Options"
config BR2_TOOLCHAIN_CTNG_uClibc_LARGEFILE
bool "Enable large file (files > 2 GB) support"
select BR2_LARGEFILE
help
Enable this option if you want your toolchain to support
files bigger than 2 GB.
config BR2_TOOLCHAIN_CTNG_uClibc_INET_IPV6
bool "Enable IPv6 support"
select BR2_INET_IPV6
help
Enable this option if you want your toolchain to support
IPv6.
config BR2_TOOLCHAIN_CTNG_uClibc_INET_RPC
bool "Enable RPC support"
select BR2_INET_RPC
help
Enable this option if you want your toolchain to support
RPC (needed for NFS, for example).
config BR2_TOOLCHAIN_CTNG_uClibc_WCHAR
bool "Enable WCHAR support"
select BR2_USE_WCHAR
help
Enable this option if you want your toolchain to support
wide characters (i.e characters longer than 8 bits, needed
for locale support).
config BR2_TOOLCHAIN_CTNG_uClibc_LOCALE
bool "Enable toolchain locale/i18n support"
select BR2_TOOLCHAIN_CTNG_uClibc_WCHAR
select BR2_ENABLE_LOCALE
help
Enable this option if you want your toolchain to support
localization and internationalization.
endif # BR2_TOOLCHAIN_CTNG_uClibc
config BR2_TOOLCHAIN_CTNG_CXX
bool "Enable C++ support"
select BR2_INSTALL_LIBSTDCPP
help
Enable this option if you want your toolchain to support the
C++ language and you want C++ libraries to be installed on
your target system.
choice
prompt "Thread library implementation"
default BR2_TOOLCHAIN_CTNG_THREADS_PTHREADS_OLD \
if BR2_TOOLCHAIN_CTNG_uClibc
default BR2_TOOLCHAIN_CTNG_THREADS_NPTL \
if BR2_TOOLCHAIN_CTNG_eglibc || \
BR2_TOOLCHAIN_CTNG_glibc
help
Enable thread support and select thread implementation. With
glibc, thread support is mandatory but several
implementations are available. With uClibc, thread support
is optional, and when enabled, several implementations are
available. However, not all thread variants work with all
versions of uClibc for all architectures, the "linuxthreads
(stable/old)" may be a working fallback.
config BR2_TOOLCHAIN_CTNG_THREADS_NONE
bool "none"
depends on BR2_TOOLCHAIN_CTNG_uClibc
config BR2_TOOLCHAIN_CTNG_THREADS_PTHREADS
bool "linuxthreads"
select BR2_TOOLCHAIN_HAS_THREADS
config BR2_TOOLCHAIN_CTNG_THREADS_PTHREADS_OLD
bool "linuxthreads (stable/old)"
select BR2_TOOLCHAIN_HAS_THREADS
depends on BR2_TOOLCHAIN_CTNG_uClibc
config BR2_TOOLCHAIN_CTNG_THREADS_NPTL
bool "Native POSIX Threading (NPTL)"
select BR2_TOOLCHAIN_HAS_THREADS
depends on BR2_TOOLCHAIN_CTNG_eglibc || \
BR2_TOOLCHAIN_CTNG_glibc
endchoice
endif # BR2_TOOLCHAIN_CTNG
|
