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TODO list for the uClibc 0.9.27 release:
-------------------------------------------------
*) Implement some mechanism (perhaps encoded in the .so name,
perhaps using an abi tag magically embedded into each object)
for flagging config options that break the ABI. Options
such as UCLIBC_HAS_SOFT_FLOAT, UCLIBC_HAS_THREADS, UCLIBC_HAS_LOCALE,
and perhaps others (finalize list) produce a lib with a differing
ABI. Make it so apps cannot use an ABI mis-matched uClibc.
*) Fix syscall() on mips
*) Finish up current ldso cleanups
*) Fix dlopen, for both static and dynamic cases, and make it
actually comply with SuSv3
TODO list for the uClibc 1.0.0 release:
-------------------------------------------------
*) Documentation updates:
*) Write a uClibc HOWTO document
*) Update README document
*) Update INSTALL document
*) Update docs/Glibc_vs_uClibc_Differences.txt document
and fully document all differences between the feature
set of uClibc and glibc.
*) Update docs/uClibc_vs_SuSv3.txt document
*) Update docs/threads.txt document
*) Write man pages for ldd and ldconfig utility binaries
*) Perhaps implement glibc style frame-unwinding, so that gcc need
not be built with --enable-sjlj-exceptions for C++ exception handling
to work.
*) Implement the float and long double versions of math funcs
using wrappers on top of the double versions (size / precision
trade off where size clearly wins).
*) Delete current profiling code (because it is complete crap
and only works properly when static + PIC, and because it is
quite intrusive, and because there are better ways to profile)
*) Fix profiling by adding missing stub functions per
http://uclibc.org/lists/uclibc/2004-February/008167.html
and used by, i.e. http://www710.univ-lyon1.fr/~yperret/fnccheck/
*) Audit header files. Remove prototypes for all functions that
are not supported -- especially needed for the libm headers.
*) Audit header files. When options are disabled, also disable
them in the include files as well by checking for the proper
define from include/bits/uClibc_config.h (pulled in from features.h)
*) Make all small objects (>~50 bytes) into either inlines or
into a static library
*) Cleanup / rewrite sysconf.c. It should get some information
from ldso (such as HZ). Other stuff it currently just makes
up, which is obviously wrong. Also bits/uClibc_clk_tck.h
needs to be updated at the same time to get proper HZ values.
*) It would nice if valgrind wouldn't complain about the atexit() malloc'd
memory for destructors, which happens since the dynamic linker calls
atexit(), which calls malloc() prior to valgrind starting, so valgrind
complains because it didn't see that memory allocated.
*) From the the ELF spec "...All shared object initializations happen
before the executable file gains control. ... Before the initialization
code for any object A is called, the initialization code for any other
objects that object A depends on are called. For these purposes, an object
A depends on another object B, if B appears in Ads list of needed objects
(recorded in the DT_NEEDED entries of the dynamic structure). The order of
initialization for circular dependencies is undefined." uClibc's shared
lib loader should be fixed to run ctors in the specified order.
*) poll emulation using select() for old 2.0.x uClinux kernels
in libc/sysdeps/linux/common/poll.c fails some python self-tests.
Of course, modern systems using the actuall poll() syscall work fine.
*) Rework the build system Makefile to eliminate recursive make.
*) Build both pic and non-pic objects where appropriate, so that
static libs need not pay the pic size penalty.
*) Cleanup/scrub all the Makefile copyright junk
*) Debugging pthreads with gdb does not work at all on mips
*) Debugging pthreads with gdb initially appears to work, but
fails to function correctly on arm
TODO list for AFTER the uClibc 1.0.0 release:
-------------------------------------------------
*) Add support for Linux 2.6.x NPTL pthreads, futexes, etc
*) Add support for Linux 2.6.x fast vsyscalls
*) Enable pristine source tree builds
*) Fix regex so it isn't so stinking big
*) Fix glob so it isn't so stinking big
*) run 'nm -D --size-sort -t d libuClibc-0.9.26.so' and work on the
biggest things (i.e. stuff at the end of the list) to make
them smaller.
<more wishlist items here>
-----------------------------------------------------------------------------
Manuel's todo:
1) Little things that need fixing:
----------------------------------
a) Fix bug in *printf: outdigit precison bug
b) Check that gnu/bsd extension members tm_gmtoff and tm_zone in struct tm
are respected where they should be.
c) Implement the obstack printf funcs for glibc compat.
d) Implement glibc 'a' flag for scanf string conversions.
e) Allow use of the older non-table-based ctype functions when using
stub locale support. (smaller)
2) Additional str{f|p}time issues.
----------------------------------
a) Spacing issue wrt strptime.
b) Support locale specific alternate digits. (data is in place)
c) Support locale era in year designations. (data is in place)
d) Deal with mb format string issues in strftime.
e) Implement wcsftime.
3) Other locale issues (my implementation):
-------------------------------------------
a) Do a little more clean up of ctype and wctype.
b) Rework of the locale data organization to make using locales reasonable
when staticly linking. (mmap)
c) Rewrite the locale data generation tools to process the text specifications
rather than relying on glibc.
d) Adapt regex lib to use my collation data and add the necessary collating
item tables to support SUSv3 required features.
e) transliteration of unsupported wchars in 8-bit locales (like glibc).
f) Support ISO/IEC 14652 draft locale extensions (LC_PAPER, etc).
g) Implement strfrom.
h) Shift-state codeset locale support?
4) Misc:
--------
a) Port uClibc to other OSs (including elks), or even bare metal (libgloss).
b) Write a space-efficient gettext substitute, to avoid storing large amounts
of redundant data.
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