TODO 7.9 KB

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  1. TODO list for every uClibc release:
  2. -------------------------------------------------
  3. *) Test cris, i386, mips, mipsel, sh, x86_64, arm, armeb, and powerpc
  4. with the latest LTP testsuite. Fix any regressions and post LTP
  5. testsuite results for each architecture on uclibc.org.
  6. *) Audit header files. Remove prototypes for all functions that
  7. are not supported -- especially needed for the libm headers.
  8. *) Audit header files. When options are disabled, also disable
  9. them in the include files as well by checking for the proper
  10. define from include/bits/uClibc_config.h (pulled in from features.h)
  11. General release feature sets:
  12. -------------------------------------------------
  13. .29 will be mostly as-is
  14. .30 will be the NPTL merge
  15. .31 for the no-kernel-headers fix, etc, etc.
  16. TODO list for the uClibc 0.9.29 release:
  17. -------------------------------------------------
  18. *) as many of the arch-specific issues as possible
  19. *) Remove N instances of libc_hidden_proto() from uClibc internals.
  20. Instead add internal only header(s) defining all hidden prototypes.
  21. This will avoid clutter and guarantee prototype consistancy.
  22. *) The __is*_l() functions were all removed, such that we now only export
  23. the is*_l() functions (no prefix). Before, we had the prefixed versions
  24. for use by libstdc++ and weak versions without prefixes exported because
  25. those functions belong to no std (unless you call glibc a std). This should
  26. be fixed. Similar problems likely were created elsewhere.
  27. *) misc stdio bugs:
  28. http://bugs.uclibc.org/view.php?id=420
  29. http://bugs.uclibc.org/view.php?id=539
  30. *) bug in getopt handling:
  31. http://bugs.uclibc.org/view.php?id=61
  32. http://www.uclibc.org/lists/uclibc/2006-January/013851.html
  33. *) Should integrate test subdir better ... need to propagate CPU
  34. CFLAGS/LDFLAGS to the build/link for target binaries so that when we have
  35. a multilib toolchain, the proper ABI is selected.
  36. TODO list for the uClibc 1.0.0 release:
  37. -------------------------------------------------
  38. *) glob / fnmatch tests fail
  39. *) regex should pass AT&T conformance tests
  40. *) Finish hiding uClibc internal symbols from our exported namespace
  41. *) Add system for generating minimal system call asm wrappers that abuse
  42. the C ABI to minimize amount of register/stack manipulation
  43. *) Explicity add some sortof CONFIG_LINUX_2_2_ABI, CONFIG_LINUX_2_4_ABI
  44. and CONFIG_LINUX_2_6_ABI type options, rather than having the abi
  45. depend on the selected set of kernel headers. This will likely also
  46. require that we provide a set of kernel headers (probably a derivitive
  47. of Mazur's linux-libc-headers) that can supplies the 2.2, 2.4, and 2.6
  48. kernel abi.
  49. *) Documentation updates:
  50. *) Write a uClibc HOWTO document
  51. *) Update README document
  52. *) Update INSTALL document
  53. *) Update docs/Glibc_vs_uClibc_Differences.txt document
  54. and fully document all differences between the feature
  55. set of uClibc and glibc.
  56. *) Update docs/uClibc_vs_SuSv3.txt document
  57. *) Update docs/threads.txt document
  58. *) Write man pages for ldd and ldconfig utility binaries
  59. *) Implement some mechanism (perhaps encoded in the .so name,
  60. perhaps using an abi tag magically embedded into each object)
  61. for flagging config options that break the ABI. Options
  62. such as UCLIBC_HAS_SOFT_FLOAT, UCLIBC_HAS_THREADS, UCLIBC_HAS_LOCALE,
  63. and perhaps others (finalize list) produce a lib with a differing
  64. ABI. Make it so apps cannot use an ABI mis-matched uClibc.
  65. This is most easily done using symbol versioning...
  66. *) Implement the long double versions of math funcs
  67. using wrappers on top of the double versions (size / precision
  68. trade off where size clearly wins).
  69. *) Make all small objects (>~50 bytes) into either inlines or
  70. into a static library
  71. *) Cleanup / rewrite sysconf.c. It should get some information
  72. from ldso (such as HZ). Other stuff it currently just makes
  73. up, which is obviously wrong. Also bits/uClibc_clk_tck.h
  74. needs to be updated at the same time to get proper HZ values.
  75. *) poll emulation using select() for old 2.0.x uClinux kernels
  76. in libc/sysdeps/linux/common/poll.c fails some python self-tests.
  77. Of course, modern systems using the actuall poll() syscall work fine.
  78. *) Cleanup/scrub all the Makefile copyright junk
  79. *) Fix dlopen, for both static and dynamic cases, and make it
  80. fully comply with SuSv3
  81. *) From the the ELF spec "...All shared object initializations happen
  82. before the executable file gains control. ... Before the initialization
  83. code for any object A is called, the initialization code for any other
  84. objects that object A depends on are called. For these purposes, an object
  85. A depends on another object B, if B appears in Ads list of needed objects
  86. (recorded in the DT_NEEDED entries of the dynamic structure). The order of
  87. initialization for circular dependencies is undefined." uClibc's shared
  88. lib loader should be fixed to run ctors in the specified order.
  89. TODO list for AFTER the uClibc 1.0.0 release:
  90. -------------------------------------------------
  91. *) Add support for Linux 2.6.x fast vsyscalls
  92. *) Enable pristine source tree builds
  93. *) Fix regex so it isn't so stinking big
  94. *) Fix glob so it isn't so stinking big
  95. *) run 'nm -D --size-sort -t d libuClibc-0.9.26.so' and work on the
  96. biggest things (i.e. stuff at the end of the list) to make
  97. them smaller.
  98. <more wishlist items here>
  99. Arch specific TODO:
  100. -------------------------------------------------
  101. alpha:
  102. ldso is not implemented
  103. arm:
  104. update crt1 code again for nommu (http://bugs.uclibc.org/view.php?id=538)
  105. recruit jbowler and integrate thumb support
  106. hppa:
  107. errno.c test segfaults causes segfault in clone.S (seems to be in glibc too)
  108. i386:
  109. add support for fast system calls
  110. ia64:
  111. ldso is not implemented
  112. m68k:
  113. ldso lazy relocation doesnt work
  114. sparc:
  115. need a sigaction.c since common one doesnt work (signal tests)
  116. ldso needs to be updated since it's totally broken atm
  117. vax:
  118. pthread support, linktime warning support (implies GAS patches),
  119. general touchups, testing, ldso.
  120. frv sh64:
  121. need to be updated to new ldso changes and unification of the
  122. two uClibc_main funcs (__uClibc_start_main doesnt exist anymore)
  123. -----------------------------------------------------------------------------
  124. Manuel's todo:
  125. 1) Little things that need fixing:
  126. ----------------------------------
  127. a) Fix bug in *printf: outdigit precison bug
  128. b) Check that gnu/bsd extension members tm_gmtoff and tm_zone in struct tm
  129. are respected where they should be.
  130. c) Implement the obstack printf funcs for glibc compat.
  131. d) Implement glibc 'a' flag for scanf string conversions.
  132. e) Allow use of the older non-table-based ctype functions when using
  133. stub locale support. (smaller)
  134. 2) Additional str{f|p}time issues.
  135. ----------------------------------
  136. a) Spacing issue wrt strptime.
  137. b) Support locale specific alternate digits. (data is in place)
  138. c) Support locale era in year designations. (data is in place)
  139. d) Deal with mb format string issues in strftime.
  140. e) Implement wcsftime.
  141. 3) Other locale issues (my implementation):
  142. -------------------------------------------
  143. a) Do a little more clean up of ctype and wctype.
  144. b) Rework of the locale data organization to make using locales reasonable
  145. when staticly linking. (mmap)
  146. c) Rewrite the locale data generation tools to process the text specifications
  147. rather than relying on glibc.
  148. d) Adapt regex lib to use my collation data and add the necessary collating
  149. item tables to support SUSv3 required features.
  150. e) transliteration of unsupported wchars in 8-bit locales (like glibc).
  151. f) Support ISO/IEC 14652 draft locale extensions (LC_PAPER, etc).
  152. g) Implement strfrom.
  153. h) Shift-state codeset locale support?
  154. 4) Misc:
  155. --------
  156. a) Port uClibc to other OSs (including elks), or even bare metal (libgloss).
  157. b) Write a space-efficient gettext substitute, to avoid storing large amounts
  158. of redundant data.