1 TODO list for the uClibc 0.9.27 release:
2 -------------------------------------------------
3 *) Fix use of __secure in __uClibc_init() for so that we prevent
4 starting staticly linked SUID binaries where the standard file
5 descriptors are not opened. For dynamically linked binaries,
7 *) Audit header files. Remove prototypes for all functions that
8 are not supported -- especially needed for the libm headers.
9 *) Audit header files. When options are disabled, also disable
10 them in the include files as well by checking for the proper
11 define from include/bits/uClibc_config.h (pulled in from features.h)
12 *) Hide uClibc internal symbols from our exported namespace.
15 TODO list for the uClibc 1.0.0 release:
16 -------------------------------------------------
18 *) Explicity add some sortof CONFIG_LINUX_2_2_ABI, CONFIG_LINUX_2_4_ABI
19 and CONFIG_LINUX_2_6_ABI type options, rather than having the abi
20 depend on the selected set of kernel headers. This will likely also
21 require that we provide a set of kernel headers (probably a derivitive
22 of Mazur's linux-libc-headers) that can supplies the 2.2, 2.4, and 2.6
24 *) Documentation updates:
25 *) Write a uClibc HOWTO document
26 *) Update README document
27 *) Update INSTALL document
28 *) Update docs/Glibc_vs_uClibc_Differences.txt document
29 and fully document all differences between the feature
30 set of uClibc and glibc.
31 *) Update docs/uClibc_vs_SuSv3.txt document
32 *) Update docs/threads.txt document
33 *) Write man pages for ldd and ldconfig utility binaries
34 *) Implement some mechanism (perhaps encoded in the .so name,
35 perhaps using an abi tag magically embedded into each object)
36 for flagging config options that break the ABI. Options
37 such as UCLIBC_HAS_SOFT_FLOAT, UCLIBC_HAS_THREADS, UCLIBC_HAS_LOCALE,
38 and perhaps others (finalize list) produce a lib with a differing
39 ABI. Make it so apps cannot use an ABI mis-matched uClibc.
40 This is most easily done using symbol versioning...
41 *) Perhaps implement glibc style frame-unwinding, so that gcc need
42 not be built with --enable-sjlj-exceptions for C++ exception handling
44 *) Implement the float and long double versions of math funcs
45 using wrappers on top of the double versions (size / precision
46 trade off where size clearly wins).
47 *) Make all small objects (>~50 bytes) into either inlines or
49 *) Cleanup / rewrite sysconf.c. It should get some information
50 from ldso (such as HZ). Other stuff it currently just makes
51 up, which is obviously wrong. Also bits/uClibc_clk_tck.h
52 needs to be updated at the same time to get proper HZ values.
53 *) It would nice if valgrind wouldn't complain about the atexit() malloc'd
54 memory for destructors, which happens since the dynamic linker calls
55 atexit(), which calls malloc() prior to valgrind starting, so valgrind
56 complains because it didn't see that memory allocated.
57 *) poll emulation using select() for old 2.0.x uClinux kernels
58 in libc/sysdeps/linux/common/poll.c fails some python self-tests.
59 Of course, modern systems using the actuall poll() syscall work fine.
60 *) Rework the build system Makefile to eliminate recursive make.
61 *) Build both pic and non-pic objects where appropriate, so that
62 static libs need not pay the pic size penalty.
63 *) Cleanup/scrub all the Makefile copyright junk
64 *) Debugging pthreads with gdb does not work at all on mips unless
65 the application is staticly linked.
66 *) Fix dlopen, for both static and dynamic cases, and make it
67 fully comply with SuSv3
68 *) From the the ELF spec "...All shared object initializations happen
69 before the executable file gains control. ... Before the initialization
70 code for any object A is called, the initialization code for any other
71 objects that object A depends on are called. For these purposes, an object
72 A depends on another object B, if B appears in Ads list of needed objects
73 (recorded in the DT_NEEDED entries of the dynamic structure). The order of
74 initialization for circular dependencies is undefined." uClibc's shared
75 lib loader should be fixed to run ctors in the specified order.
78 TODO list for AFTER the uClibc 1.0.0 release:
79 -------------------------------------------------
80 *) Add support for Linux 2.6.x NPTL pthreads, futexes, etc
81 *) Add support for Linux 2.6.x fast vsyscalls
82 *) Enable pristine source tree builds
83 *) Fix regex so it isn't so stinking big
84 *) Fix glob so it isn't so stinking big
85 *) run 'nm -D --size-sort -t d libuClibc-0.9.26.so' and work on the
86 biggest things (i.e. stuff at the end of the list) to make
88 <more wishlist items here>
93 -----------------------------------------------------------------------------
96 1) Little things that need fixing:
97 ----------------------------------
98 a) Fix bug in *printf: outdigit precison bug
99 b) Check that gnu/bsd extension members tm_gmtoff and tm_zone in struct tm
100 are respected where they should be.
101 c) Implement the obstack printf funcs for glibc compat.
102 d) Implement glibc 'a' flag for scanf string conversions.
103 e) Allow use of the older non-table-based ctype functions when using
104 stub locale support. (smaller)
106 2) Additional str{f|p}time issues.
107 ----------------------------------
108 a) Spacing issue wrt strptime.
109 b) Support locale specific alternate digits. (data is in place)
110 c) Support locale era in year designations. (data is in place)
111 d) Deal with mb format string issues in strftime.
112 e) Implement wcsftime.
114 3) Other locale issues (my implementation):
115 -------------------------------------------
116 a) Do a little more clean up of ctype and wctype.
117 b) Rework of the locale data organization to make using locales reasonable
118 when staticly linking. (mmap)
119 c) Rewrite the locale data generation tools to process the text specifications
120 rather than relying on glibc.
121 d) Adapt regex lib to use my collation data and add the necessary collating
122 item tables to support SUSv3 required features.
123 e) transliteration of unsupported wchars in 8-bit locales (like glibc).
124 f) Support ISO/IEC 14652 draft locale extensions (LC_PAPER, etc).
125 g) Implement strfrom.
126 h) Shift-state codeset locale support?
130 a) Port uClibc to other OSs (including elks), or even bare metal (libgloss).
131 b) Write a space-efficient gettext substitute, to avoid storing large amounts