1 TODO list for the uClibc 0.9.27 release:
2 -------------------------------------------------
3 *) Implement some mechanism (perhaps encoded in the .so name,
4 perhaps using an abi tag magically embedded into each object)
5 for flagging config options that break the ABI. Options
6 such as UCLIBC_HAS_SOFT_FLOAT, UCLIBC_HAS_THREADS, UCLIBC_HAS_LOCALE,
7 and perhaps others (finalize list) produce a lib with a differing
8 ABI. Make it so apps cannot use an ABI mis-matched uClibc.
9 *) Fix syscall() on mips
10 *) Finish up current ldso cleanups
11 *) Fix dlopen, for both static and dynamic cases, and make it
12 actually comply with SuSv3
13 *) Fix use of __secure in __uClibc_init() for so that we prevent
14 starting staticly linked SUID binaries where the standard file
15 descriptors are not opened. For dynamically linked binaries,
16 ldso does this for us.
19 TODO list for the uClibc 1.0.0 release:
20 -------------------------------------------------
22 *) Documentation updates:
23 *) Write a uClibc HOWTO document
24 *) Update README document
25 *) Update INSTALL document
26 *) Update docs/Glibc_vs_uClibc_Differences.txt document
27 and fully document all differences between the feature
28 set of uClibc and glibc.
29 *) Update docs/uClibc_vs_SuSv3.txt document
30 *) Update docs/threads.txt document
31 *) Write man pages for ldd and ldconfig utility binaries
32 *) Perhaps implement glibc style frame-unwinding, so that gcc need
33 not be built with --enable-sjlj-exceptions for C++ exception handling
35 *) Implement the float and long double versions of math funcs
36 using wrappers on top of the double versions (size / precision
37 trade off where size clearly wins).
38 *) Fix profiling by adding missing stub functions per
39 http://uclibc.org/lists/uclibc/2004-February/008167.html
40 and used by, i.e. http://www710.univ-lyon1.fr/~yperret/fnccheck/
41 *) Audit header files. Remove prototypes for all functions that
42 are not supported -- especially needed for the libm headers.
43 *) Audit header files. When options are disabled, also disable
44 them in the include files as well by checking for the proper
45 define from include/bits/uClibc_config.h (pulled in from features.h)
46 *) Make all small objects (>~50 bytes) into either inlines or
48 *) Cleanup / rewrite sysconf.c. It should get some information
49 from ldso (such as HZ). Other stuff it currently just makes
50 up, which is obviously wrong. Also bits/uClibc_clk_tck.h
51 needs to be updated at the same time to get proper HZ values.
52 *) It would nice if valgrind wouldn't complain about the atexit() malloc'd
53 memory for destructors, which happens since the dynamic linker calls
54 atexit(), which calls malloc() prior to valgrind starting, so valgrind
55 complains because it didn't see that memory allocated.
56 *) From the the ELF spec "...All shared object initializations happen
57 before the executable file gains control. ... Before the initialization
58 code for any object A is called, the initialization code for any other
59 objects that object A depends on are called. For these purposes, an object
60 A depends on another object B, if B appears in Ads list of needed objects
61 (recorded in the DT_NEEDED entries of the dynamic structure). The order of
62 initialization for circular dependencies is undefined." uClibc's shared
63 lib loader should be fixed to run ctors in the specified order.
64 *) poll emulation using select() for old 2.0.x uClinux kernels
65 in libc/sysdeps/linux/common/poll.c fails some python self-tests.
66 Of course, modern systems using the actuall poll() syscall work fine.
67 *) Rework the build system Makefile to eliminate recursive make.
68 *) Build both pic and non-pic objects where appropriate, so that
69 static libs need not pay the pic size penalty.
70 *) Cleanup/scrub all the Makefile copyright junk
71 *) Debugging pthreads with gdb does not work at all on mips
72 *) Debugging pthreads with gdb initially appears to work, but
73 fails to function correctly on arm
76 TODO list for AFTER the uClibc 1.0.0 release:
77 -------------------------------------------------
78 *) Add support for Linux 2.6.x NPTL pthreads, futexes, etc
79 *) Add support for Linux 2.6.x fast vsyscalls
80 *) Enable pristine source tree builds
81 *) Fix regex so it isn't so stinking big
82 *) Fix glob so it isn't so stinking big
83 *) run 'nm -D --size-sort -t d libuClibc-0.9.26.so' and work on the
84 biggest things (i.e. stuff at the end of the list) to make
86 <more wishlist items here>
91 -----------------------------------------------------------------------------
94 1) Little things that need fixing:
95 ----------------------------------
96 a) Fix bug in *printf: outdigit precison bug
97 b) Check that gnu/bsd extension members tm_gmtoff and tm_zone in struct tm
98 are respected where they should be.
99 c) Implement the obstack printf funcs for glibc compat.
100 d) Implement glibc 'a' flag for scanf string conversions.
101 e) Allow use of the older non-table-based ctype functions when using
102 stub locale support. (smaller)
104 2) Additional str{f|p}time issues.
105 ----------------------------------
106 a) Spacing issue wrt strptime.
107 b) Support locale specific alternate digits. (data is in place)
108 c) Support locale era in year designations. (data is in place)
109 d) Deal with mb format string issues in strftime.
110 e) Implement wcsftime.
112 3) Other locale issues (my implementation):
113 -------------------------------------------
114 a) Do a little more clean up of ctype and wctype.
115 b) Rework of the locale data organization to make using locales reasonable
116 when staticly linking. (mmap)
117 c) Rewrite the locale data generation tools to process the text specifications
118 rather than relying on glibc.
119 d) Adapt regex lib to use my collation data and add the necessary collating
120 item tables to support SUSv3 required features.
121 e) transliteration of unsupported wchars in 8-bit locales (like glibc).
122 f) Support ISO/IEC 14652 draft locale extensions (LC_PAPER, etc).
123 g) Implement strfrom.
124 h) Shift-state codeset locale support?
128 a) Port uClibc to other OSs (including elks), or even bare metal (libgloss).
129 b) Write a space-efficient gettext substitute, to avoid storing large amounts