buildroot: make it easier to build all kmods
[openwrt/svn-archive/archive.git] / config / Config-build.in
1 # Copyright (C) 2006-2013 OpenWrt.org
2 #
3 # This is free software, licensed under the GNU General Public License v2.
4 # See /LICENSE for more information.
5 #
6
7 menu "Global build settings"
8
9 config ALL_KMODS
10 bool "Select all kernel module packages by default"
11 default ALL
12
13 config ALL
14 bool "Select all userspace packages by default"
15 default n
16
17 comment "General build options"
18
19 config DISPLAY_SUPPORT
20 bool "Show packages that require graphics support (local or remote)"
21 default n
22
23 config BUILD_PATENTED
24 default y
25 bool "Compile with support for patented functionality"
26 help
27 When this option is disabled, software which provides patented functionality
28 will not be built. In case software provides optional support for patented
29 functionality, this optional support will get disabled for this package.
30
31 config BUILD_NLS
32 default n
33 bool "Compile with full language support"
34 help
35 When this option is enabled, packages are built with the full versions of
36 iconv and GNU gettext instead of the default OpenWrt stubs. If uClibc is
37 used, it is also built with locale support.
38
39 config SHADOW_PASSWORDS
40 bool
41 prompt "Enable shadow password support"
42 default y
43 help
44 Enable shadow password support.
45
46 config CLEAN_IPKG
47 bool
48 prompt "Remove ipkg/opkg status data files in final images"
49 default n
50 help
51 This removes all ipkg/opkg status data files from the target directory
52 before building the root filesystem.
53
54 config COLLECT_KERNEL_DEBUG
55 bool
56 prompt "Collect kernel debug information"
57 select KERNEL_DEBUG_INFO
58 default n
59 help
60 This collects debugging symbols from the kernel and all compiled modules.
61 Useful for release builds, so that kernel issues can be debugged offline
62 later.
63
64 comment "Kernel build options"
65
66 source "config/Config-kernel.in"
67
68 comment "Package build options"
69
70 config DEBUG
71 bool
72 prompt "Compile packages with debugging info"
73 default n
74 help
75 Adds -g3 to the CFLAGS.
76
77 config IPV6
78 bool
79 prompt "Enable IPv6 support in packages"
80 default y
81 help
82 Enable IPv6 support in packages (passes --enable-ipv6 to configure scripts).
83
84 config PKG_BUILD_PARALLEL
85 bool
86 prompt "Compile certain packages parallelized"
87 default y
88 help
89 This adds a -jX option to certain packages that are known to behave well
90 for parallel build. By default, the package make processes use the main
91 jobserver, in which case this option only takes effect when you add -jX
92 to the make command.
93
94 If you are unsure, select N.
95
96 config PKG_BUILD_USE_JOBSERVER
97 bool
98 prompt "Use top-level make jobserver for packages"
99 depends on PKG_BUILD_PARALLEL
100 default y
101 help
102 This passes the main make process jobserver fds to package builds,
103 enabling full parallelization across different packages.
104
105 Note that disabling this may overcommit CPU resources depending on the
106 -j level of the main make process, the number of package submake jobs
107 selected below and the number of actual CPUs present.
108 Example: If the main make is passed a -j4 and the submake -j
109 is also set to 4, we may end up with 16 parallel make processes
110 in the worst case.
111
112 config PKG_BUILD_JOBS
113 int
114 prompt "Number of package submake jobs (2-512)"
115 range 2 512
116 default 2
117 depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
118 help
119 The number of jobs (-jX) to pass to packages submake.
120
121 config PKG_DEFAULT_PARALLEL
122 bool
123 prompt "Parallelize the default package build rule (May break build)"
124 depends on PKG_BUILD_PARALLEL
125 depends on BROKEN
126 default n
127 help
128 Always set the default package build rules to parallel build.
129
130 WARNING: This may break build or kill your cat, as it builds packages
131 with multiple jobs that are probably not tested in a parallel build
132 environment.
133
134 Only say Y if you don't mind fixing broken packages. Before reporting
135 build bugs, set this to N and re-run the build.
136
137 comment "Stripping options"
138
139 choice
140 prompt "Binary stripping method"
141 default USE_STRIP if EXTERNAL_TOOLCHAIN
142 default USE_STRIP if USE_GLIBC || USE_MUSL
143 default USE_SSTRIP
144 help
145 Select the binary stripping method you wish to use.
146
147 config NO_STRIP
148 bool "none"
149 help
150 This will install unstripped binaries (useful for native
151 compiling/debugging).
152
153 config USE_STRIP
154 bool "strip"
155 help
156 This will install binaries stripped using strip from binutils.
157
158
159 config USE_SSTRIP
160 bool "sstrip"
161 depends on !DEBUG
162 depends on !USE_GLIBC
163 help
164 This will install binaries stripped using sstrip.
165 endchoice
166
167 config STRIP_ARGS
168 string
169 prompt "Strip arguments"
170 depends on USE_STRIP
171 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
172 default "--strip-all"
173 help
174 Specifies arguments passed to the strip command when stripping binaries.
175
176 config STRIP_KERNEL_EXPORTS
177 bool "Strip unnecessary exports from the kernel image"
178 help
179 Reduces kernel size by stripping unused kernel exports from the kernel
180 image. Note that this might make the kernel incompatible with any kernel
181 modules that were not selected at the time the kernel image was created.
182
183 config USE_MKLIBS
184 bool "Strip unnecessary functions from libraries"
185 help
186 Reduces libraries to only those functions that are necessary for using all
187 selected packages (including those selected as <M>). Note that this will
188 make the system libraries incompatible with most of the packages that are
189 not selected during the build process.
190
191 choice
192 prompt "Preferred standard C++ library"
193 default USE_LIBSTDCXX if USE_GLIBC
194 default USE_UCLIBCXX
195 help
196 Select the preferred standard C++ library for all packages that support this.
197
198 config USE_UCLIBCXX
199 bool "uClibc++"
200
201 config USE_LIBSTDCXX
202 bool "libstdc++"
203 endchoice
204
205 comment "Hardening build options"
206
207 config PKG_CHECK_FORMAT_SECURITY
208 bool
209 prompt "Enable gcc format-security"
210 default n
211 help
212 Add -Wformat -Werror=format-security to the CFLAGS. You can disable
213 this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
214 Makefile.
215
216 choice
217 prompt "User space Stack-Smashing Protection"
218 default PKG_CC_STACKPROTECTOR_NONE
219 help
220 Enable GCC Stack Smashing Protection (SSP) for userspace applications
221 config PKG_CC_STACKPROTECTOR_NONE
222 bool "None"
223 config PKG_CC_STACKPROTECTOR_REGULAR
224 bool "Regular"
225 select SSP_SUPPORT
226 depends on KERNEL_CC_STACKPROTECTOR_REGULAR
227 config PKG_CC_STACKPROTECTOR_STRONG
228 bool "Strong"
229 select SSP_SUPPORT
230 depends on GCC_VERSION_4_9_LINARO
231 depends on KERNEL_CC_STACKPROTECTOR_STRONG
232 endchoice
233
234 choice
235 prompt "Kernel space Stack-Smashing Protection"
236 default KERNEL_CC_STACKPROTECTOR_NONE
237 help
238 Enable GCC Stack-Smashing Protection (SSP) for the kernel
239 config KERNEL_CC_STACKPROTECTOR_NONE
240 bool "None"
241 config KERNEL_CC_STACKPROTECTOR_REGULAR
242 bool "Regular"
243 config KERNEL_CC_STACKPROTECTOR_STRONG
244 depends on GCC_VERSION_4_9_LINARO
245 bool "Strong"
246 endchoice
247
248 choice
249 prompt "Enable buffer-overflows detection (FORTIFY_SOURCE)"
250 help
251 Enable the _FORTIFY_SOURCE macro which introduces additional
252 checks to detect buffer-overflows in the following standard library
253 functions: memcpy, mempcpy, memmove, memset, strcpy, stpcpy,
254 strncpy, strcat, strncat, sprintf, vsprintf, snprintf, vsnprintf,
255 gets. "Conservative" (_FORTIFY_SOURCE set to 1) only introduces
256 checks that shouldn't change the behavior of conforming programs,
257 while "aggressive" (_FORTIFY_SOURCES set to 2) some more checking is
258 added, but some conforming programs might fail.
259 config PKG_FORTIFY_SOURCE_NONE
260 bool "None"
261 config PKG_FORTIFY_SOURCE_1
262 bool "Conservative"
263 config PKG_FORTIFY_SOURCE_2
264 bool "Aggressive"
265 endchoice
266
267 choice
268 prompt "Enable RELRO protection"
269 help
270 Enable a link-time protection known as RELRO (Relocation Read Only)
271 which helps to protect from certain type of exploitation techniques
272 altering the content of some ELF sections. "Partial" RELRO makes the
273 .dynamic section not writeable after initialization, introducing
274 almost no performance penalty, while "full" RELRO also marks the GOT
275 as read-only at the cost of initializing all of it at startup.
276 config PKG_RELRO_NONE
277 bool "None"
278 config PKG_RELRO_PARTIAL
279 bool "Partial"
280 config PKG_RELRO_FULL
281 bool "Full"
282 endchoice
283
284 endmenu