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* build system: remove special-casing for extra libsDenys Vlasenko2015-10-121-14/+11
| | | | | | It is not reliable (tried on three systems, multiple problems). Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* build system: -fno-builtin-printfDenys Vlasenko2015-10-071-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | Benefits are: drops reference to out-of-line putchar(), fixes a few cases of failed string merge. function old new delta i2cdump_main 1488 1502 +14 sha256_process_block64 423 433 +10 sendmail_main 1183 1185 +2 list_table 1114 1116 +2 i2cdetect_main 1235 1237 +2 fdisk_main 2852 2854 +2 builtin_type 119 121 +2 unicode_conv_to_printable2 325 324 -1 scan_recursive 380 378 -2 mkfs_minix_main 2687 2684 -3 buffer_fill_and_print 178 169 -9 putchar 152 - -152 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 7/4 up/down: 34/-167) Total: -133 bytes text data bss dec hex filename 937788 932 17676 956396 e97ec busybox_old 937564 932 17676 956172 e970c busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Aboriginal linux/musl build fixesDenys Vlasenko2015-10-051-0/+2
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Makefile.flags: survive a build system which has no pthreadDenys Vlasenko2015-09-041-1/+6
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Makefile: add missing libraries to LDLIBSBartosz Golaszewski2015-08-171-9/+9
| | | | | | | | | | | | | | Static build with CONFIG_PAM fails on Debian Jessie due to undefined references to libdl and libaudit. Static build without pam, but with libcrypt required fails as well due to undefined references to libpthread. Fix these two cases by adding the missing libraries to LDLIBS when appropriate. Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* build system: make CONFIG_EXTRA_LDFLAGS go to LDFLAGS, not EXTRA_LDFLAGSDenys Vlasenko2015-04-141-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* build system: use pkg-config to look up selinux libsMike Frysinger2012-10-201-1/+11
| | | | | | | | Newer versions of libselinux has started linking against more libs. Rather than continuing hardcoding things, switch to using pkg-config to query for its dependencies. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* build system: stop .eh_frame generationDenys Vlasenko2012-09-041-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | From Rich Felker: By default, modern GCC generates DWARF2 debug/unwind tables in the .eh_frame section of the object files/binaries. This adds significant bloat (as much as 15%) to the size of the busybox binary, including the portion mapped/loaded into memory at runtime (possibly a big issue for NOMMU targets), and the section is not strippable with the strip command due to being part of the loaded program text. I've since done some further checking - both testing and asking the GCC developers about it - and it seems the solution is to add to the CFLAGS -fno-unwind-tables and -fno-asynchronous-unwind-tables. If debugging is disabled, this will prevent GCC from outputting DWARF2 tables entirely. But since busybox builds with -g by default, the interesting case is what happens then. I originally thought these options would break debugging, but they don't; instead, they tell GCC to output the DWARF2 tables in the .debug_frame section instead of the newish .eh_frame section (used for exception handling). With these options added, busybox_unstripped is still fully debuggable, and the final busybox binary loses the 15% bloat factor from the DWARF2 tables. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* disable format security warningsMike Frysinger2012-08-041-0/+1
| | | | | | | | | | | | | | | | | | We pass strings to printf directly a lot. Some distros enable some flags in their gcc by default like -Wformat-security. With these two things, we end up with a lot of build warnings like so: loginutils/chpasswd.c:42:3: warning: format not a string literal and no format arguments [-Wformat-security] But we don't care. Our focus is first and foremost on size, so adding a lot of dummy calls like: - printf(some_constant_string); + printf("%s", some_constant_string); is pointless bloat. Disable this warning flag if the compiler supports it. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* fix build breakage with gcc 4.2.1Denys Vlasenko2012-04-201-1/+4
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* build system: remove bogus $(1) in last commitDenys Vlasenko2012-03-111-1/+1
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* build system: detect missing crypt and drop it from linkingDenys Vlasenko2012-03-101-7/+8
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* build system: fix broken CONFIG_SYSROOT handlingDenys Vlasenko2012-03-081-1/+3
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Add SYSROOT, EXTRA_{LDFLAGS,LDLIBS} config opts; sample Android NDK configRob Walker2012-03-071-0/+15
| | | | | Signed-off-by: Rob Walker <rwalker@rwalker.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Fix link failure on some platforms when PAM is enabledTristan Schmelcher2011-12-051-1/+8
| | | | | Signed-off-by: Tristan Schmelcher <tristan_schmelcher@alumni.uwaterloo.ca> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Android build fixes and alternate (hopefully simpler) defconfig for itDenys Vlasenko2011-09-091-0/+5
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* Compile options: default to -O2 when -Os is not availableWolfgang Denk2011-05-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | Recent versions of GCC for PowerPC systems suffer from some compiler bugs which prevent the use of "--enable-target-optspace" in their configuration, which makes the compiler option "-Os" unavailable; for reference see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43810 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48278 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45053 In the result, BusyBox will be compiled without any optimization options, which causes a huge binary (1.8 MiB for default configuration on PPC, built with gcc 54.51 from the Yocto / Poky / OpenEmbedded tool chains). This commit changes behaviour so "-O2" gets used as fallback when "-Os" is not available. This reduces the image size in above test to 1.3 MiB. This is still 10...15% more then what we get with "-Os", but much better than using no optimization at all. Signed-off-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* allow SKIP_STRIP to be set in the envMike Frysinger2010-11-161-1/+1
| | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* diff: more compiler compat fixes. no code changesDan Fandrich2010-02-041-0/+1
| | | | | Signed-off-by: Dan Fandrich <dan@coneharvesters.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* preliminary work for gcc 4.4.0Denys Vlasenko2009-08-221-0/+9
| | | | Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
* the -elf2flt flag can be used w/out -Wl, so drop the requirement so people ↵Mike Frysinger2009-03-121-3/+3
| | | | can use either form
* - add flash_eraseallBernhard Reutner-Fischer2009-02-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the result after converting mtd-utils' flash_eraseall to BB. The functionality given by this patch almost the same except that this one does not support long options. I needed this tool a system which does not have a lot of flash for RFS and merging this into BB as the only way out. [bigeasy@]$ ./scripts/bloat-o-meter bb_wo_fl bb_w_fl function old new delta flash_eraseall_main - 1072 +1072 show_progress - 62 +62 packed_usage 25156 25176 +20 applet_names 1958 1973 +15 applet_main 2352 2360 +8 target_endian - 4 +4 applet_nameofs 588 590 +2 applet_install_loc 147 148 +1 ------------------------------------------------------------------------------ (add/remove: 3/0 grow/shrink: 5/0 up/down: 1184/0) Total: 1184 bytes [bigeasy@]$ size miscutils/flash_eraseall.o text data bss dec hex filename 1586 4 0 1590 636 miscutils/flash_eraseall.o Signed-off-by: Benedigt Spranger <b.spranger@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
* - add CONFIG_EXTRA_CFLAGS (thanks to keesj)Bernhard Reutner-Fischer2009-01-221-0/+5
| | | | | | This helps with remembering additional flags like e.g. cpu settings for people who did not configured their compiler to produce code for their cpu per default.
* - reinstate commented out _FORTIFY_SOURCE that was somehow dropped by Denys?Bernhard Reutner-Fischer2008-08-051-1/+2
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* Reinstate DEBUG_PESSIMIZE (by Christian Ionescu-Idbohrn)Denis Vlasenko2008-06-121-3/+10
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* Build system: track -Wl,-elf2flt in CFLAGS_busybox too.Denis Vlasenko2008-06-061-2/+7
| | | | | | Document in comments that it generally should be thers, not in LDFLAGS
* remove -fno-jump-tables - after stripping it proved to be worseDenis Vlasenko2008-06-041-4/+0
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* build system: add PIE build optionDenis Vlasenko2008-06-041-4/+16
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* more -Wall warning fixes. -Wall is enabled now.Denis Vlasenko2008-05-181-3/+7
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* Add more -W options to gcc.Denis Vlasenko2008-05-151-14/+3
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* build system: do not rebuild entire tree if it is movedDenis Vlasenko2008-05-081-1/+1
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* *: add -Wunused-parameter; fix resulting breakageDenis Vlasenko2008-03-171-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | function old new delta procps_scan 1265 1298 +33 aliascmd 278 283 +5 parse_file_cmd 116 120 +4 dname_enc 373 377 +4 setcmd 90 93 +3 execcmd 57 60 +3 count_lines 72 74 +2 process_command_subs 340 339 -1 test_main 409 407 -2 mknod_main 179 177 -2 handle_incoming_and_exit 2653 2651 -2 argstr 1312 1310 -2 shiftcmd 131 128 -3 exitcmd 46 43 -3 dotcmd 297 294 -3 breakcmd 86 83 -3 evalpipe 353 349 -4 evalcommand 1180 1176 -4 evalcmd 109 105 -4 send_tree 374 369 -5 mkfifo_main 82 77 -5 evalsubshell 152 147 -5 typecmd 75 69 -6 letcmd 61 55 -6 add_cmd 1190 1183 -7 main 891 883 -8 ash_main 1415 1407 -8 parse_stream 1377 1367 -10 alloc_procps_scan 55 - -55 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148) Total: -94 bytes text data bss dec hex filename 797195 658 7428 805281 c49a1 busybox_old 797101 658 7428 805187 c4943 busybox_unstripped
* defconfig: updateDenis Vlasenko2007-12-241-1/+2
| | | | | | | appletli.c: add vda's (C) top: fixlet for incorrect display of "0" Makefile: reduce stack size from 20k to 16k
* add -fvisibility=hidden to CC flags, mark XXX_main functionsDenis Vlasenko2007-10-111-1/+4
| | | | | EXTERNALLY_VISIBLE. 5% size reduction of libbusybox.so
* add -fpic to CC flags when we build libbusybox (14% smaller .so)Denis Vlasenko2007-10-111-0/+6
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* reviving libbusybox, adding CONFIG_INDIVIDUAL part 3Denis Vlasenko2007-10-071-1/+2
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* reviving libbusybox, adding CONFIG_INDIVIDUAL part 2Denis Vlasenko2007-10-071-8/+5
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* login: optional support for PAMDenis Vlasenko2007-08-211-3/+5
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* Modify method of linking against libs. Now we fisrt try allDenis Vlasenko2007-07-171-3/+10
| | | | | | | | specified libs, and if it succeeds, we try to remove them one-by-one. If link succeeds, then library is thrown out. Should solve the problem with SELinux linking in libsepol even when not needed.
* random shrinkage of statics, -60 bytes savedDenis Vlasenko2007-06-211-2/+2
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* since we removed the deprecated matches() now and thus not alot of warnings ↵Bernhard Reutner-Fischer2007-06-211-0/+3
| | | | | | are currently seen, let's strive to fixup these: - warn a little bit about unused results
* punt %.bflt target in favor of proper LDFLAGS=-Wl,-elf2flt handlingMike Frysinger2007-06-191-1/+8
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* moved biggest stack buffers to malloc space, or made their size configurableDenis Vlasenko2007-06-101-0/+1
| | | | | | | | | | | | | | | | | (8k of shell line edit buffer is an overkill) # make ARCH=i386 bloatcheck function old new delta read_line_input 3933 3967 +34 ifaddrlist 348 345 -3 do_loadfont 208 191 -17 edit_file 840 819 -21 .rodata 129112 129080 -32 uncompress 1305 1268 -37 loadfont_main 566 495 -71 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/6 up/down: 34/-181) Total: -147 bytes
* set default FLTFLAGS for a fatty stackMike Frysinger2007-04-051-0/+3
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* introduce the concept of LDLIBS for additional libraries so that when we do ↵Mike Frysinger2007-03-301-3/+3
| | | | the final link, the objects/libraries are in the correct order
* - reinstate dmalloc and efence supportBernhard Reutner-Fischer2007-03-281-0/+9
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* new applets: selinux utils by KaiGai Kohei <kaigai@kaigai.gr.jp>Denis Vlasenko2007-02-061-0/+4
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* add -Wwrite-strings to MakefileDenis Vlasenko2007-02-011-4/+4
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* disable -Wold-style-definition for gcc 3.xDenis Vlasenko2007-01-291-1/+7
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* make it possible to build bbox without warnings again.Denis Vlasenko2007-01-271-4/+14
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