busybox-w32/applets, branch 1_28_2

Automatically disable FEATURE_COMPRESS_USAGE for small builds.

2017-01-06T18:16:36+00:00

Signed-off-by: Denys Vlasenko

build system: always rewrite NUM_APPLETS.h

2016-08-23T18:21:36+00:00

Conditional rewrite can keep NUM_APPLETS.h mtime old, this causes make to try to regenerate it at every invocation. Signed-off-by: Denys Vlasenko

build system: different fix for include/applet_tables.h/include/NUM_APPLETS.h

2016-08-21T20:00:20+00:00

Signed-off-by: Denys Vlasenko

build system: fix include/NUM_APPLETS.h generation

2016-08-14T00:54:27+00:00

TBH, it's more like "work around my bad makefile-fu" than "fix"... Signed-off-by: Denys Vlasenko

config: disentangle PREFER_APPLETS from SH_STANDALONE and SH_NOFORK

2016-07-22T16:48:38+00:00

On user request. I thought enabling/disabling them all together is more consistent. Evidently, some people do want them to be separately selectable. Signed-off-by: Denys Vlasenko

build system: fix a few warnings for allnoconfig build

2016-07-05T19:43:28+00:00

Not that allnoconfig build is useful in any way... Signed-off-by: Denys Vlasenko

build system: finer-grained selection of search speedup table.

2016-04-02T13:18:26+00:00

KNOWN_APPNAME_OFFSETS=8 versus KNOWN_APPNAME_OFFSETS=0: function old new delta find_applet_by_name 55 136 +81 applet_nameofs - 14 +14 run_applet_and_exit 757 758 +1 Signed-off-by: Denys Vlasenko

applet_tables: save space by removing applet name offsets

2016-03-29T22:44:11+00:00

The array applet_nameofs consumes two bytes per applet. It encodes nofork/noexec flags suid flags the offset of the applet name in the applet_name string Change the applet_table build tool to store the flags in two separate arrays (applet_flags and applet_suid). Replace applet_nameofs[] with a smaller version that only stores a limited number of offsets. This requires changes to the macros APPLET_IS_NOFORK, APPLET_IS_NOEXEC and APPLET_SUID. According to Valgrind the original find_applet_by_name required 353 cycles per call, averaged over all names. Adjusting the number of known offsets allows space to be traded off against execution time: KNOWN_OFFSETS cycles bytes (wrt KNOWN_OFFSETS = 0) 0 9057 - 2 4604 32 4 2407 75 8 1342 98 16 908 130 32 884 194 This patch uses KNOWN_OFFSETS = 8. v2: Remove some dead code from the applet_table tool; Treat the applet in the middle of the table as a special case. v3: Use the middle applet to adjust the start of the linear search as well as the last applet found. v4: Use an augmented linear search in find_applet_by_name. Drop the special treatment of the middle name from get_applet_name: most of the advantage now derives from the last stored value. v5: Don't store index in applet_nameofs, it can be calculated. v6: Tweaks by Denys function old new delta find_applet_by_name 25 125 +100 applet_suid - 92 +92 run_applet_no_and_exit 452 460 +8 run_applet_and_exit 695 697 +2 applet_name_compare 31 - -31 applet_nameofs 734 14 -720 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 3/1 up/down: 202/-751) Total: -549 bytes text data bss dec hex filename 925464 906 17160 943530 e65aa busybox_old 924915 906 17160 942981 e6385 busybox_unstripped Signed-off-by: Ron Yorston Signed-off-by: Denys Vlasenko

Aboriginal linux/musl build fixes

2015-10-05T09:15:43+00:00

Signed-off-by: Denys Vlasenko

applets: Add installation of individual binaries

2015-07-01T17:10:03+00:00

Adding support to install individual binaries if the option is enabled. This also installs the shared libbusybox.so.* library. Signed-off-by: Clayton Shotwell Signed-off-by: Denys Vlasenko