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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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17
include/libbb.h
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@@ -848,23 +848,20 @@ extern void bb_verror_msg(const char *s, va_list p, const char *strerr);
/* applets which are useful from another applets */
int bb_cat(char** argv);
int echo_main(int argc, char** argv) MAIN_EXTERNALLY_VISIBLE;
int test_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int kill_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
#if ENABLE_ROUTE
void bb_displayroutes(int noresolve, int netstatfmt);
#endif
/* If shell needs them, these three "exist" even if not enabled as applets */
int echo_main(int argc, char** argv) USE_ECHO(MAIN_EXTERNALLY_VISIBLE);
int test_main(int argc, char **argv) USE_TEST(MAIN_EXTERNALLY_VISIBLE);
int kill_main(int argc, char **argv) USE_KILL(MAIN_EXTERNALLY_VISIBLE);
int chown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
#if ENABLE_GUNZIP
int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
#endif
#if ENABLE_BUNZIP2
int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
#endif
int bbunpack(char **argv,
char* (*make_new_name)(char *filename),
USE_DESKTOP(long long) int (*unpacker)(void)
);
#if ENABLE_ROUTE
void bb_displayroutes(int noresolve, int netstatfmt);
#endif
/* Networking */