CVS log for dietlibc/dietfeatures.h

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Default branch: MAIN

get exceptions and ctors/dtors to work

split off stackgap-g.o, don't compile valgrind stuff into stackgap.o,
  diet chooses depending on presence of -g
move stackguard var from .data to .bss
remove gcc 7.3 warning from lib/__v_printf.c

fix sockets on i386

add sha feature defines

remove WANT_DYNAMIC (it caused annoying binutils warnings)

support clang by adding -fno-integrated-as

remove errno magic

make stat and readdir work for x32

Some minor fixes.

fixing problem with x86_64 vdso-'syscalls'.
fixing small problem with definition and C++.

  change gettimeofday vsyscall to use the vdso
  add WANT_HOSTS_GIVEUP_EARLY in dietfeatures.h

  add WANT_GNU_STARTUP_BLOAT in dietfeatures.h to support
    program_invocation_short_name and program_invocation_name
  add INT*_MIN, INT*_MAX, UINT*_MAX, etc to stdint.h
  remove const from stdsignal prototype to agree with standard

add llmnr dns lookup

  add WANT_VALGRIND_SUPPORT in dietfeatures.h.  When #defined, the
    startup code will check if the program is running under valgrind,
    and if it is, the SIMD optimized string routines will switch back to
    a slower version that does not generate valgrind false positives.

some asm string functions

some misc build fixes and forgotten files

  use randomness passed in ELF auxvec instead of /dev/urandom in startup
    (strace looks cleaner now)
  use ELF auxvec to implement getpagesize
  support thread local storage (w00t!!!!)
and a small cosmetic change to fgetc_unlocked

add MAP_POPULATE
fix bug in setvbuf

add some crude shotgun debugging code to malloc, enabled by
WANT_FREE_OVERWRITE

  update SSP (ProPolice) support (with help from Eduardo Tongson)
  enabled starting with gcc 4.1

doc update

  implement gettimeofday vsyscall for x86_64
  replace unfinished plug&play DNS hack with zeroconf,
    rename dietfeatures.h option to WANT_PLUGPLAY_DNS.
    A small dns daemon can be found in contrib/dnsd.c
    Not tested at all except against each other!

disable stackguard per default (smaller binaries)

  add sigisemptyset, sigandset and sigorset (John K. Hohm)
  minor additions to make gdb 6.3 happy (John K. Hohm)
  ld.so support for gdb (John K. Hohm)
  implement nice(2) via setpriority() if there is no nice syscall

  tzfile parser fix (John K. Hohm)
  ppc64 fixes (Gwenole Beauchesne)
  work around "diet /usr/bin/gcc" not finding ~/.diet/gcc

remove WANT_NONCOMPLIANT_STRNCAT (misunderstanding)

support for stack gap (enable in dietfeatures.h)
support for gcc ProPolice (needs stack gap enabled)
extend WANT_NON_COMPLIANT_STRNCAT to strncpy.

document the WANT_SYSENTER and user-mode-linux problem

fixing strtok_r (rewrite)
making the %m support NON DEFAULT as it is NOT SUSv3 or SUSv2
started to fix scanf

several metric tons of new ports (ppc64, s390x), new functionality (%m
in printf) and fixes from SuSE

disable the ipv6 plug and play dns until it's done

add experimental IPv6 plug-and-play DNS (see
http://www.fefe.de/ipv6pnpdns.html, disable in dietfeatures.h)

I found a way to make sysenter backwards compatible
It probably breaks WANT_DYNAMIC

add vsyscall support on x86-linux2.5

add WANT_INET_ADDR_DNS to make gethostbyname not look up dotted decimal
IPs but fill in the struct hostent directly.

make the DNS resolver IPv6 transport capable

add syscall() and a few tests

make strncpy optionally zero-fill and not just zero-terminate.
The standard says it should, but it's bloat and normally not useful.

FIXED a bug in *scanf (there was no long long handling).
one step more to unified libdl/dynlinker (still 3 functions missing).

remove buggy strsep option.  It wasn't glibc that was buggy, it was the
Linux man page.

optimize fread()ing large blocks.

fixed typo
fixed of by one bug

optional malloc(0) returns a "zero"-object

fixed some weak dependencies...

start using __attribute__((malloc)) to improve tell the gcc 3 optimizer
that a function returns a malloced pointer, i.e. the pointer can't alias
any existing data.

Now teh installation of static and dynamic dosen't conflict...

several bug fixes from Uwe Ohse.

changed the diet warpper to generate dynamic-linked programs and shared
objects.
found some non-working functions due to libdl/dietld.so (still debuging).

add very cool linker error (WANT_SAFEGUARD in dietfeatures.h) that makes
ld barf if you try to link an object file compiled with "diet gcc"
against glibc.  The resulting binaries will very likely not work.
This is some funkly linker trickery that I invented here, I'm quite
proud of myself now. ;)

add 32-bit uid syscalls (and prototypes).
We still need backwards compatibility wrappers.

add md5 crypt

Smaller strcasecmp and strncasecmp implementations from Frank Klemm,
slightly smaller mktime and gmtime, and x86 assembler implementation for
strtod from Frank Klemm.

it's ttyname.o, not tty.o (in the Makefile dependencies)

/etc/hosts support!

ugh, touched all stdio and ripped out the non-ungetc and unbuffered
modes.  Did some ELF weak symbol trickery to make `puts("foo")' not
reference the whole stdio crap.

cleanse rpc from bcopy, fix ttyname for !isatty case

long long support (optional) for printf (%lld)

lots of errno cleanups,
lots of errno related thread-safeness cleanups in librpc (don't ask).

cleaner errno vs. *__errno_location() handling.
add dummy iconv (iconv_open always returns EINVAL).
add expect() optimization in qsort.

add getserv*.
the dns routines can now optionally (WANT_FULL_RESOLV_CONF) try
to append the different domains from /etc/resolv.conf.

setfsuid, setfsgid syscalls.

add threadsafe.sh hack.

new configuration option: make strsep conform to glibc (and what openssh
expects) instead of what the man page says.  ARGH!!!

ungetc data was not initialized in stdio FILEs.

make the non-compliant behaviour of strncat configurable in
dietfeatures.h

typo, WANT_THREAD_SAVE -> WANT_THREAD_SAFE

add msg* library and pthread check for WANT_THREAD_SAFE in
dietfeatures.h

add "%.2f" support for printf.

make scanf character classes configurable in dietfeatures.h

oops, trivial fix for initgroups.

fixed (?) __dtostr.

add several functions to make busybox compile and partially link.

added tzfile implementation (read /etc/localtime to get time zone).
Finally, localtime() can cope with daylight saving time!

alpha time() fix.

gethostbyaddr!1!!

added ungetc (yuck!)

Implemented linker warnings!  Woohoo!
Added linker warnings to a couple of dangerous or bloaty functions.

fixed fread on pipes.

added empty math.h and sys/times.h.
added sys/poll.h and sys/file.h.
tried to add large file support.

files where missing (?)