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shells: do not frocibly enable test, echo and kill _applets_,

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just build relevant source and use xxx_main functions.
build system: add a special case when we have exactly one applet enabled
(makes "true", "false", "basename" REALLY tiny).
getopt32: do not use stdio.

function                                             old     new   delta
getopt32                                            1385    1412     +27
make_device                                         1187    1200     +13
basename_main                                        120     127      +7
tcpudpsvd_main                                      1922    1926      +4
testcmd                                                5       -      -5
echocmd                                                5       -      -5
fuser_main                                          1243    1231     -12
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 4/1 up/down: 51/-22)             Total: 29 bytes
This commit is contained in:
Denis Vlasenko
2008-04-01 14:47:57 +00:00
parent 165f5b394f
commit 468aea2d88
14 changed files with 84 additions and 91 deletions
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4
coreutils/echo.c
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@ -27,10 +27,8 @@
/* This is a NOFORK applet. Be very careful! */
/* argc is unused, but removing it precludes compiler from
* using call -> jump optimization */
/* NB: can be used by shell even if not enabled as applet */
int echo_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int echo_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
const char *arg;