| Age | Commit message (Collapse) | Author |
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--gc-sections linker flag with static linking. If this happens, then
the "stdout" variable (used by printf() and such) will only work if stdout
is _not_ redirected. I.E "./busybox" prints stuff, but "./busybox | cat"
does not produce any output. (But even when redirected, "write(1,"blah",4);"
continues to work just fine.)
This is clearly a glibc bug, but to avoid triggering it I've moved the
--gc-sections flag so it only gets added when we're not statically linking.
If somebody would like to go poke Ulrich Drepper, you can trivially reproduce
this with a "hello world" program, ala:
gcc -static -Wl,--gc-sections hello.c && (./a.out | cat)
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Extraversion to be able to distinguish it from the now old 1.2.0 release
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(the e2fsprogs directory is too twisty and evil to easily fix, but I plan
to rewrite it anyway so I'll just bump that up in priority a bit).
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removal should be complete.
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Various fixes, cleanups and shrinkage:
saves 952 Bytes:
text data bss dec hex filename
1087742 15853 790632 1894227 1ce753 ../busybox/busybox.old
1086790 15853 790632 1893275 1ce39b busybox
via:
# scripts/bloat-o-meter ../busybox/busybox_unstripped.old busybox_unstripped
function old new delta
ipcrm_main 756 822 +66
getval - 61 +61
maybe_set_utc - 40 +40
udhcpc_main 2896 2912 +16
md5_hash_block 428 437 +9
opt 8 16 +8
qgravechar 106 110 +4
make_bitmap 292 295 +3
inflate_unzip 2056 2059 +3
add_partition 1412 1414 +2
__parsespent 156 158 +2
qrealloc 41 42 +1
format - 1 +1
catv_main 313 314 +1
watch_main 293 292 -1
varunset 81 80 -1
part 1 - -1
check_if_skip 837 836 -1
start_stop_daemon_main 840 837 -3
create_lost_and_found 175 172 -3
supress_non_delimited_lines 4 - -4
static.l 4 - -4
static.c 5 1 -4
bsd_sum_file 237 233 -4
eval2 338 332 -6
arithmetic_common 166 158 -8
cmpfunc 22 5 -17
cksum_main 294 275 -19
cmp_main 465 439 -26
dd_main 1535 1508 -27
rmmod_main 376 333 -43
cut_file 727 644 -83
ipcs_main 3809 3721 -88
cut_main 722 614 -108
date_main 1443 1263 -180
remove_ids 222 - -222
------------------------------------------------------------------------------
(add/remove: 3/4 grow/shrink: 11/18 up/down: 217/-853) Total: -636 bytes
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pullup r15828 from busybox_scratch
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use it, thus fixing building against uClibc with regex support disabled.
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pointer warning on certain gcc versions (and saves 38 bytes).
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remove the now unneeded NOTPARALLEL clause
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applets which are a forest of #ifdefs are unmaintainable.)
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the terminal the way mingetty does instead of the way agetty does. It's
a bit ugly for somebody else to be writing to a console sitting at a
login: prompt, but it's uglier when newline doesn't work as expected if
they do.
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loaded while it's running (ala multi-device hotplug).
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The following patch makes coreutils/test.c act fail gracefully if getgroups()
returns a -1. This fixes a problem on the One Laptop Per Child ROM image
whereby we were getting odd Memory exhausted messages for '[' and 'test'.
Found by Mitch Bradley <wmb@firmworks.com>
(Tweaked by Rob: no need to initialize a static to NULL, or realloc something
that's only allocated when it's NULL.)
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------------------------------------------------------------------------
r15465 | aldot | 2006-06-21 20:48:06 +0200 (Wed, 21 Jun 2006) | 3 lines
- use CONFIG_BUSYBOX_EXEC_PATH as before it one was broken by a recent revert.
- use xchdir() since all is invain if it fails there anyways, supposedly
------------------------------------------------------------------------
r15466 | aldot | 2006-06-21 20:55:16 +0200 (Wed, 21 Jun 2006) | 2 lines
- adjust docs to take CONFIG_BUSYBOX_EXEC_PATH into account.
------------------------------------------------------------------------
r15467 | aldot | 2006-06-21 21:31:24 +0200 (Wed, 21 Jun 2006) | 18 lines
- partial fallout of my TREE_USED touchup against gcc-4.2: rip unused vars, save
s 144 bytes
text data bss dec hex filename
862434 10156 645924 1518514 172bb2 busybox.old
862322 10156 645892 1518370 172b22 busybox
function old new delta
z_len 4 - -4
textend 4 - -4
part_nb 4 - -4
insize 4 - -4
ifile_size 4 - -4
do_link 4 - -4
new_text 70 60 -10
ipaddr_list_link 33 23 -10
gzip_main 898 822 -76
------------------------------------------------------------------------------
(add/remove: 0/6 grow/shrink: 0/3 up/down: 0/-120) Total: -120 bytes
------------------------------------------------------------------------
r15468 | aldot | 2006-06-21 21:43:05 +0200 (Wed, 21 Jun 2006) | 19 lines
- remove useless global exports
function old new delta
rpm_main 940 1601 +661
rpm_getstring 107 112 +5
rpm_getint 148 153 +5
loop_through_files 103 106 +3
fileaction_dobackup 115 113 -2
fileaction_list 5 - -5
rpm_getcount 42 - -42
extract_cpio_gz 161 - -161
rpm_gettags 504 - -504
------------------------------------------------------------------------------
(add/remove: 0/4 grow/shrink: 4/1 up/down: 674/-714) Total: -40 bytes
text data bss dec hex filename
862322 10156 645892 1518370 172b22 busybox.old
862290 10156 645892 1518338 172b02 busybox
------------------------------------------------------------------------
r15555 | aldot | 2006-06-30 14:10:11 +0200 (Fri, 30 Jun 2006) | 22 lines
- shrink syslog a little bit, move a big buffer (for 'line') off the bss, fold s
emaphore stuff into single caller manually.
stats:
function old new delta
logMessage 395 427 +32
message 1245 1257 +12
opts - 4 +4
small 1 - -1
local_logging 4 - -4
doRemoteLog 4 - -4
circular_logging 4 - -4
syslogd_main 1299 1285 -14
static.res 36 16 -20
.rodata 186650 186586 -64
static.line 1025 - -1025
------------------------------------------------------------------------------
(add/remove: 1/5 grow/shrink: 2/3 up/down: 48/-1136) Total: -1088 bytes
cow@s37:~/src/busybox_scratch$ size sysklogd/syslogd.o{.orig,}
text data bss dec hex filename
3723 348 5242 9313 2461 sysklogd/syslogd.o.orig
3697 348 4188 8233 2029 sysklogd/syslogd.o
==============================================================================
Overall bloatcheck for the changeset mentioned above:
function old new delta
rpm_main 953 1608 +655
logMessage 395 427 +32
message 1245 1257 +12
opts - 4 +4
rpm_getstring 107 110 +3
rpm_getint 148 151 +3
loop_through_files 103 104 +1
small 1 - -1
fileaction_dobackup 115 113 -2
z_len 4 - -4
textend 4 - -4
part_nb 4 - -4
local_logging 4 - -4
insize 4 - -4
ifile_size 4 - -4
do_link 4 - -4
doRemoteLog 4 - -4
circular_logging 4 - -4
fileaction_list 5 - -5
new_text 70 60 -10
ipaddr_list_link 33 23 -10
clear_bufs 31 21 -10
syslogd_main 1287 1273 -14
builtin_help 190 176 -14
static.res 36 16 -20
builtin_source 229 199 -30
rpm_getcount 42 - -42
gzip_main 842 786 -56
.rodata 227176 227112 -64
lash_main 609 527 -82
busy_loop 3883 3739 -144
extract_cpio_gz 155 - -155
rpm_gettags 501 - -501
static.line 1025 - -1025
------------------------------------------------------------------------------
(add/remove: 1/15 grow/shrink: 6/12 up/down: 710/-2221) Total: -1511 bytes
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except that we still have to work when there is no mtab.
Oh, and while we're at it, take advantage of the fact that modern processors
avoid branches via conditional assignment where possible. ("x = a ? b : c;"
turns into "x = c; if (a) x = b;" because that way there's no branch to
potentially mispredict and thus never a bubble in the pipeline. The if(a)
turns into an assembly test followed by a conditional assignment (rather
than a conditional jump).) So since the compiler is going to do that _anyway_,
we might as well take advantage of it to produce a slightly smaller binary.
So there.
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gentoo embedded...
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defined), yet it's not doing it for scripts/individual for some reason.
(I hate fighting with header files.)
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subtree stuff to look more like http://lwn.net/Articles/159077/ thinks
they should.
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in the previous patch.
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few new (unfinished) config options, which I intend to make hidden (but
enabled) when CONFIG_NITPICK is disabled. Getting the .config infrastructure
to do that is non-obvious, it seems...
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a symlink doesn't work.
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teach scripts/individual new tricks. And while I'm at it, teach
scripts/individual other new tricks. Now builds 198 applets, some of which
I should teach it to hardlink together because they're really the same app...
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stdout is not one of them.
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http://busybox.net/lists/busybox/2005-September/015766.html
I renamed it "individual" to not confuse it with the standalone shell. (Which
it isn't compatible with for obvious reasons.) Configure busybox (I did
make defconfig), then run scripts/individual and it'll build an individual
version of each applet in the "build" subdirectory.
Currently it builds 146 and fails to build 104 applets out of "make defconfig".
I haven't taught it about multi-file applets yet (like tar), or the ones where
two applets get built from the same source (for example, zcat is a trivial
variant of gunzip so there is no zcat.c). But here's a start.
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