[PATCH v5 2/4] kernel: add VirtIO device support
[openwrt.git] / Config.in
1 # Copyright (C) 2006-2009 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 mainmenu "OpenWrt Configuration"
8
9 config HAVE_DOT_CONFIG
10 bool
11 default y
12
13 source "target/Config.in"
14
15 menu "Target Images"
16
17 menuconfig TARGET_ROOTFS_INITRAMFS
18 bool "ramdisk"
19 default y if USES_INITRAMFS
20 depends LINUX_2_6
21 help
22 Embed the rootfs into the kernel (initramfs)
23
24 choice
25 prompt "Compression"
26 default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ar71xx
27 default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ramips
28 default TARGET_INITRAMFS_COMPRESSION_NONE
29 depends TARGET_ROOTFS_INITRAMFS
30 depends !LINUX_2_6_25
31 help
32 Select ramdisk compression.
33
34 config TARGET_INITRAMFS_COMPRESSION_NONE
35 bool "none"
36
37 config TARGET_INITRAMFS_COMPRESSION_GZIP
38 bool "gzip"
39
40 config TARGET_INITRAMFS_COMPRESSION_BZIP2
41 bool "bzip2"
42
43 config TARGET_INITRAMFS_COMPRESSION_LZMA
44 bool "lzma"
45
46 config TARGET_INITRAMFS_COMPRESSION_LZO
47 bool "lzo"
48 endchoice
49
50 comment "Root filesystem archives"
51
52 config TARGET_ROOTFS_CPIOGZ
53 bool "cpio.gz"
54 default y if USES_CPIOGZ
55 help
56 Build a compressed cpio archive of the the root filesystem
57
58 config TARGET_ROOTFS_TARGZ
59 bool "tar.gz"
60 default y if USES_TARGZ
61 help
62 Build a compressed tar archive of the the root filesystem
63
64 comment "Root filesystem images"
65
66 config TARGET_ROOTFS_EXT2FS
67 bool "ext2"
68 default y if USES_EXT2
69 depends !TARGET_ROOTFS_INITRAMFS
70 help
71 Ext2 file system with some free space for uml images
72
73 config TARGET_ROOTFS_ISO
74 bool "iso"
75 default n
76 depends TARGET_ROOTFS_INITRAMFS && TARGET_x86
77 help
78 Create some bootable ISO image
79
80 config TARGET_ROOTFS_JFFS2
81 bool "jffs2"
82 default y if USES_JFFS2
83 depends !TARGET_ROOTFS_INITRAMFS
84 help
85 Build a jffs2 root filesystem
86
87 config TARGET_ROOTFS_SQUASHFS
88 bool "squashfs"
89 default y if USES_SQUASHFS
90 depends !TARGET_ROOTFS_INITRAMFS
91 help
92 Build a squashfs-lzma root filesystem
93
94 config TARGET_ROOTFS_UBIFS
95 bool "ubifs"
96 default y if USES_UBIFS
97 depends !TARGET_ROOTFS_INITRAMFS && USES_UBIFS
98 help
99 Build a ubifs root filesystem
100
101 comment "Image Options"
102
103 source "target/linux/*/image/Config.in"
104
105 config TARGET_ROOTFS_PARTSIZE
106 int "Root filesystem partition size (in MB)"
107 depends X86_GRUB_IMAGES || TARGET_ROOTFS_EXT2FS || TARGET_rb532
108 default 48
109 help
110 Allows you to change the root filesystem partition size
111
112 config TARGET_ROOTFS_MAXINODE
113 int "Maximum number of inodes in root filesystem"
114 depends TARGET_ROOTFS_EXT2FS
115 default 6000
116 help
117 Allows you to change the maximum number of inodes in the root filesystem
118
119 endmenu
120
121 menu "Global build settings"
122
123 config ALL
124 bool "Select all packages by default"
125 default n
126
127 comment "General build options"
128
129 config BUILD_PATENTED
130 default y
131 bool "Compile with support for patented functionality"
132 help
133 When this option is disabled, software which provides patented functionality will not be built.
134 In case software provides optional support for patented functionality,
135 this optional support will get disabled for this package.
136
137 config LARGEFILE
138 bool
139 prompt "Enable large file (files > 2 GB) support"
140 default y
141 help
142 Enable large file (files > 2 GB) support.
143
144 config SHADOW_PASSWORDS
145 bool
146 prompt "Enable shadow password support"
147 default y
148 help
149 Enable shadow password support.
150
151 config CLEAN_IPKG
152 bool
153 prompt "Remove ipkg/opkg status data files in final images"
154 default n
155 help
156 This removes all ipkg/opkg status data files from the target directory before building the root fs
157
158 config COLLECT_KERNEL_DEBUG
159 bool
160 prompt "Collect kernel debug information"
161 select KERNEL_DEBUG_INFO
162 default n
163 help
164 This collects debugging symbols from the kernel and all compiled modules.
165 Useful for release builds, so that kernel issues can be debugged offline later.
166
167 comment "Kernel build options"
168
169 config KERNEL_DEBUG_FS
170 bool "Compile the kernel with Debug FileSystem enabled"
171 default y
172 depends LINUX_2_6
173 help
174 debugfs is a virtual file system that kernel developers use to put
175 debugging files into. Enable this option to be able to read and
176 write to these files.
177
178 config KERNEL_PROFILING
179 bool "Compile the kernel with profiling enabled"
180 default n
181 help
182 Enable the extended profiling support mechanisms used by profilers such
183 as OProfile.
184
185 config KERNEL_KALLSYMS
186 bool "Compile the kernel with symbol table information"
187 default n
188 help
189 This will give you more information in stack traces from kernel oopses
190
191 config KERNEL_DEBUG_KERNEL
192 bool
193 default n
194
195 config KERNEL_DEBUG_INFO
196 bool "Compile the kernel with debug information"
197 default n
198 select KERNEL_DEBUG_KERNEL
199 help
200 This will compile your kernel and modules with debug information.
201
202 comment "Package build options"
203
204 config DEBUG
205 bool
206 prompt "Compile packages with debugging info"
207 default n
208 help
209 Adds -g3 to the CFLAGS
210
211 config IPV6
212 bool
213 prompt "Enable IPv6 support in packages"
214 default y
215 help
216 Enable IPV6 support in packages (passes --enable-ipv6 to configure scripts).
217
218 config PKG_BUILD_PARALLEL
219 bool
220 prompt "Compile certain packages parallelized"
221 default n
222 help
223 This adds a -jX option to certain packages that are known to
224 behave well for parallel build.
225
226 Note that this may overcommit CPU resources depending on the
227 -j level of the main make process, the number of package
228 submake jobs selected below and the number of actual CPUs present.
229 Example: If the main make is passed a -j4 and the submake -j
230 is also set to 4, we may end up with 16 parallel make processes
231 in the worst case.
232
233 You get maximum build performance, if you set the package build
234 jobs to the number of CPUs (cores) available and also start the main
235 make process with -jX, where X is the number of CPUs (cores).
236 However, make sure you have enough RAM available for
237 NR_CPUS to the power of two (NR_CPUS^2) make jobs.
238
239 If you are unsure, select N.
240
241 config PKG_BUILD_JOBS
242 int
243 prompt "Number of package submake jobs (2-512)"
244 range 2 512
245 default 2
246 depends on PKG_BUILD_PARALLEL
247 help
248 The number of jobs (-jX) to pass to packages submake.
249
250 config PKG_DEFAULT_PARALLEL
251 bool
252 prompt "Always parallelize the default package build rule (Dangerous)"
253 depends on PKG_BUILD_PARALLEL
254 default n
255 help
256 Always set the default package build rules to parallel build.
257
258 WARNING: This may break build or kill your cat, as it builds
259 packages with multiple jobs that are probably not tested in
260 a parallel build environment.
261
262 Say N. Only say Y for testing.
263
264 comment "Stripping options"
265
266 choice
267 prompt "Binary stripping method"
268 default USE_STRIP if EXTERNAL_TOOLCHAIN
269 default USE_STRIP if USE_GLIBC || USE_EGLIBC
270 default USE_SSTRIP
271 help
272 Select the binary stripping method you wish to use.
273
274 config NO_STRIP
275 bool "none"
276 help
277 This will install unstripped binaries (useful for native compiling/debugging)
278
279 config USE_STRIP
280 bool "strip"
281 help
282 This will install binaries stripped using strip from binutils
283
284
285 config USE_SSTRIP
286 bool "sstrip"
287 depends !DEBUG
288 depends !USE_GLIBC
289 depends !USE_EGLIBC
290 help
291 This will install binaries stripped using sstrip
292 endchoice
293
294 config STRIP_ARGS
295 string
296 prompt "Strip arguments"
297 depends USE_STRIP
298 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
299 default "--strip-all"
300 help
301 Specifies arguments passed to the strip command when stripping binaries
302
303 config STRIP_KERNEL_EXPORTS
304 depends LINUX_2_6
305 bool "Strip unnecessary exports from the kernel image"
306 help
307 Reduces kernel size by stripping unused kernel exports from the kernel image
308 Note that this might make the kernel incompatible with any kernel modules that
309 were not selected at the time the kernel image was created
310
311 config USE_MKLIBS
312 bool "Strip unnecessary functions from libraries"
313 help
314 Reduces libraries to only those functions that are necessary for using all
315 selected packages (including those selected as <M>)
316 Note that this will make the system libraries incompatible with most of the packages
317 that are not selected during the build process
318
319 endmenu
320
321 menuconfig DEVEL
322 bool "Advanced configuration options (for developers)"
323 default n
324
325 config BROKEN
326 bool "Show broken platforms / packages" if DEVEL
327 default n
328
329 config DOWNLOAD_FOLDER
330 string "Download folder" if DEVEL
331 default ""
332
333 config LOCALMIRROR
334 string "Local mirror for source packages" if DEVEL
335 default ""
336
337 config AUTOREBUILD
338 bool "Automatic rebuild of packages" if DEVEL
339 default y
340 help
341 Automatically rebuild packages when their files change
342
343 config BUILD_SUFFIX
344 string "Build suffix to append to the BUILD_DIR variable" if DEVEL
345 default ""
346 help
347 Build suffix to append to the BUILD_DIR variable, i.e: build_dir_suffix
348
349 config TARGET_ROOTFS_DIR
350 string "Override the default TARGET_ROOTFS_DIR variable" if DEVEL
351 default ""
352 help
353 Override the default TARGET_ROOTFS_DIR variable content $(BUILD_DIR) with custom path.
354 Use this option to re-define the location of the target root file system directory.
355
356 config CCACHE
357 bool "Use ccache" if DEVEL
358 default n
359 help
360 Compiler cache; see http://ccache.samba.org/
361
362 config EXTERNAL_KERNEL_TREE
363 string "Use external kernel tree" if DEVEL
364 default ""
365
366 config KERNEL_GIT_CLONE_URI
367 string "Enter git repository to clone" if DEVEL
368 default ""
369 help
370 Enter the full git repository path i.e.:
371 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
372 This will create a git clone of the kernel in your build
373 directory.
374
375 config KERNEL_GIT_LOCAL_REPOSITORY
376 string "Enter path to local reference repository" if DEVEL
377 default ""
378 help
379 Enter a full pathname to a local reference git repository.
380 In this instance, the --refererence option of git clone will
381 be used thus creating a quick local clone of your repo.
382
383 menuconfig TARGET_OPTIONS
384 bool "Target Options" if DEVEL
385
386 config TARGET_OPTIMIZATION
387 string "Target Optimizations" if TARGET_OPTIONS
388 default DEFAULT_TARGET_OPTIMIZATION
389 help
390 Optimizations to use when building for the target host.
391
392 config SOFT_FLOAT
393 bool "Use software floating point by default" if TARGET_OPTIONS
394 default y
395 depends on (arm || armeb || powerpc || mipsel || mips) && !HAS_FPU
396 help
397 If your target CPU does not have a Floating Point Unit (FPU) or a
398 kernel FPU emulator, but you still wish to support floating point
399 functions, then everything will need to be compiled with soft floating
400 point support (-msoft-float).
401
402 Most people will answer N.
403
404 source "toolchain/Config.in"
405
406 source "target/imagebuilder/Config.in"
407 source "target/sdk/Config.in"
408 source "target/toolchain/Config.in"
409
410 source "tmp/.config-package.in"
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