diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/busybox.net/FAQ.html | 87 |
1 files changed, 26 insertions, 61 deletions
diff --git a/docs/busybox.net/FAQ.html b/docs/busybox.net/FAQ.html index a2264f9fe..a2d20bf5c 100644 --- a/docs/busybox.net/FAQ.html +++ b/docs/busybox.net/FAQ.html | |||
| @@ -246,68 +246,33 @@ have additions to this FAQ document, we would love to add them, | |||
| 246 | trust PayPal... | 246 | trust PayPal... |
| 247 | 247 | ||
| 248 | <hr /> | 248 | <hr /> |
| 249 | <p> | ||
| 250 | <h2><a name="optimize">I want to make busybox even smaller, how do I go about it?</a></h2> | ||
| 251 | <p> | ||
| 252 | To conserve bytes it's good to know where they're being used, and the | ||
| 253 | size of the final executable isn't always a reliable indicator of | ||
| 254 | the size of the components (since various structures are rounded up, | ||
| 255 | so a small change may not even be visible by itself, but many small | ||
| 256 | savings add up). | ||
| 257 | </p> | ||
| 258 | <p> | ||
| 259 | To examine a busybox binary with an eye to saving bytes, build an | ||
| 260 | optimized debug version and run the "nm" command against it, like so: | ||
| 261 | </p> | ||
| 262 | <p> | ||
| 263 | make clean && make STRIPCMD=/bin/true && nm --size-sort busybox | ||
| 264 | </p> | ||
| 265 | <p> | ||
| 266 | This gives a list of symbols and the amount of space allocated for | ||
| 267 | each one, sorted by size. (Note: do not enable CONFIG_DEBUG for this, | ||
| 268 | as that disables compiler optimization which is great for running gdb | ||
| 269 | but misleading when trying to figure out how much space each component | ||
| 270 | is really using under normal circumstances.) | ||
| 271 | </p> | ||
| 272 | <hr /> | ||
| 273 | |||
| 274 | |||
| 249 | 275 | ||
| 250 | <br> | ||
| 251 | <br> | ||
| 252 | <br> | ||
| 253 | <br> | ||
| 254 | <br> | ||
| 255 | <br> | ||
| 256 | <br> | ||
| 257 | <br> | ||
| 258 | <br> | ||
| 259 | <br> | ||
| 260 | <br> | ||
| 261 | <br> | ||
| 262 | <br> | ||
| 263 | <br> | ||
| 264 | <br> | ||
| 265 | <br> | ||
| 266 | <br> | ||
| 267 | <br> | ||
| 268 | <br> | ||
| 269 | <br> | ||
| 270 | <br> | ||
| 271 | <br> | ||
| 272 | <br> | ||
| 273 | <br> | ||
| 274 | <br> | ||
| 275 | <br> | ||
| 276 | <br> | ||
| 277 | <br> | ||
| 278 | <br> | ||
| 279 | <br> | ||
| 280 | <br> | ||
| 281 | <br> | ||
| 282 | <br> | ||
| 283 | <br> | ||
| 284 | <br> | ||
| 285 | <br> | ||
| 286 | <br> | ||
| 287 | <br> | ||
| 288 | <br> | ||
| 289 | <br> | ||
| 290 | <br> | ||
| 291 | <br> | ||
| 292 | <br> | ||
| 293 | <br> | ||
| 294 | <br> | ||
| 295 | <br> | ||
| 296 | <br> | ||
| 297 | <br> | ||
| 298 | <br> | ||
| 299 | <br> | ||
| 300 | <br> | ||
| 301 | <br> | ||
| 302 | <br> | ||
| 303 | <br> | ||
| 304 | <br> | ||
| 305 | <br> | ||
| 306 | <br> | ||
| 307 | <br> | ||
| 308 | <br> | ||
| 309 | <br> | ||
| 310 | <br> | ||
| 311 | <br> | 276 | <br> |
| 312 | <br> | 277 | <br> |
| 313 | <br> | 278 | <br> |