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  4. <TITLE>uClibc -- a C library for embedded systems</TITLE>
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  12. <td bgcolor="#000000">
  13. <FONT FACE="lucida, helvetica" COLOR="#ccccc0">
  14. <B>µ&nbsp;C&nbsp;l&nbsp;i&nbsp;b&nbsp;c</B>
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  18. </TABLE>
  19. <p>
  20. <!-- Begin Introduction section -->
  21. <TABLE WIDTH=95% CELLSPACING=1 CELLPADDING=4 BORDER=1>
  22. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  23. <A NAME="intro"> <BIG><B>
  24. uClibc -- a C library for embedded systems
  25. </font>
  26. </A></B></BIG>
  27. </TD></TR>
  28. <TR><TD BGCOLOR="#eeeee0">
  29. <a href="http://www.uclibc.org">uClibc</a> (aka µClibc/pronounced yew-see-lib-see)
  30. is a C library for embedded Linux systems. It is much smaller then the
  31. <a href="http://www.gnu.org/software/libc/libc.html">GNU C Library</a>, but
  32. nearly all applications supported by glibc also work perfectly with uClibc.
  33. Porting applications from glibc to uClibc typically involves just recompiling
  34. the source code. uClibc supports standard Linux architectures (such as x86,
  35. strongArm, and powerpc), and also supports
  36. <a href="http://www.uclinux.org">MMU-less (also known as µClinux)</a>
  37. architectures such as the Coldfire, Dragonball, and ARM7TDMI micro-controllers.
  38. If you are building an embedded Linux system and you find that glibc is
  39. eating up too much space, you should consider using uClibc. If you are
  40. building a huge fileserver with 12 Terabytes of storage, then using
  41. glibc may be a better choice...
  42. <p>
  43. <p>
  44. uClibc is maintained by
  45. <a href="http://www.codepoet.org/andersen/erik/erik.html">Erik Andersen</a>
  46. and is licensed under the
  47. <a href="http://www.gnu.org/copyleft/lgpl.html">GNU LIBRARY GENERAL PUBLIC LICENSE</a>
  48. . This license allows you to make closed source commercial applications using
  49. uClibc (Please consider sharing some of the money you make ;-). You do not need
  50. to give away all your source code just because you use uClibc and/or run on Linux.
  51. <p>
  52. <!-- Begin Mailing list section -->
  53. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  54. <A NAME="mailing_list"><BIG><B>
  55. Mailing List
  56. </A></B></BIG>
  57. </TD></TR>
  58. <TR><TD BGCOLOR="#eeeee0">
  59. uClibc has a
  60. <a href="/lists/uclibc/">mailing list</a>.
  61. To subscribe, go and visit
  62. <a href="http://www.uclibc.org/mailman/listinfo/uclibc">this page</a>.
  63. <p>
  64. <!-- Begin Applications section -->
  65. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  66. <A NAME="applications"><BIG><B>
  67. Known Working Applications List
  68. </A></B></BIG>
  69. </TD></TR>
  70. <TR><TD BGCOLOR="#eeeee0">
  71. uClibc now has a <a href="uClibc-apps.html">list of applications</a>
  72. that are known to work. Submissions are welcome!
  73. Since most applications work just fine with uClibc, we are especially
  74. interested in knowing about any applications that either do not compile
  75. at all or do not work properly with uClibc.
  76. <!-- Begin Applications section -->
  77. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  78. <A NAME="faq"><BIG><B>
  79. Frequently Asked Questions
  80. </A></B></BIG>
  81. </TD></TR>
  82. <TR><TD BGCOLOR="#eeeee0">
  83. uClibc now has a <a href="FAQ.html">list of Frequently Asked Questions</a>.
  84. You might want to take a look.
  85. <!-- Begin Latest News section -->
  86. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  87. <A NAME="news">
  88. <BIG><B>
  89. Latest News</A>
  90. </B></BIG>
  91. </A>
  92. </TD></TR>
  93. <TR><TD BGCOLOR="#eeeee0">
  94. <ul>
  95. <li> <b>10 April 2002, uClibc 0.9.11 Released</b>
  96. <br>
  97. CodePoet Consulting is pleased to announce the immediate availability of
  98. uClibc 0.9.11. This release is primarily focused on fixing the issues that
  99. have turned up since the last release. Several bugs in the gcc wrapper
  100. have been fixed, allowing things like iproute2 and XFree86 to link properly
  101. now. Large file support has been improved, and a thread locking bug was
  102. fixed that could cause s*printf calls to deadlock when threading was
  103. enabled. Several bugs were also fixed with the powerpc, h8300, m68k,
  104. sparc, and mips architecture support. Many additional applications now
  105. compile and run perfectly and have been added to the end of the <a
  106. href="uClibc-apps.html">working applications list</a> .
  107. <p>
  108. The <a href="downloads/Changelog">Changelog</a>
  109. and <a href="downloads/uClibc-0.9.11.tar.bz2">source code</a>
  110. for this release are available <a href="downloads/">here</a>.
  111. <p>
  112. <li> <b>10 April 2002, Native uClibc/gcc-3.0.4 toolchain</b>
  113. <br>
  114. CodePoet Consulting has released source code and a Makefile
  115. to build a gcc-3.0.4 toolchain that natively targets uClibc.
  116. This brings with it full C++ support for uClibc, including the
  117. libstdc++ library. A gcc-2.95.x toolchain will also be released
  118. shortly, but is not yet ready. At this time, only source code and
  119. a Makefile for the native uClibc toolchain is being released (i.e.
  120. no binaries, sorry). Source code can be downloaded
  121. <a href="downloads/toolchain/">here</a>,
  122. but be aware that the source code is 27 MB.
  123. <p>
  124. To build the toolchain, simply grab the source, edit the Makefile
  125. to select where you would like the toolchain installed. Then
  126. run 'make and wait for it to compile. If you do not have a copy
  127. of uClibc already, it will download the latest daily snapshot.
  128. <p>
  129. <li> <b>21 March 2002, uClibc 0.9.10 Released!</b>
  130. <br>
  131. CodePoet Consulting is pleased to announce the immediate
  132. availability of uClibc 0.9.10. This release adds pthreads support
  133. (including pthreads support for mmu-less systems!). Additionally,
  134. thanks to Manuel Novoa III, we now have a completely new stdio
  135. library, which is small, standards compliant, supports pthreads,
  136. wide/narrow streams, large files, and can even operate in a
  137. low-memory unbuffered mode. Many, many bugs have been fixed and a
  138. number of additional applications now compile and run perfectly.
  139. Even with all these changes, uClibc continues to be very small.
  140. On x86, a default build of the uClibc C library is still just 168k.
  141. <p>
  142. To make things more interesting, the release also adds support for
  143. C++ constructors and destructors. To make it easy to use uClibc
  144. when developing C++ applications, this release also provides a
  145. wrapper for the GNU C++ compiler. Of course, for more complex C++
  146. applications, such as those using iostreams, a standard C++ library
  147. (libstdc++) is required. A native GNU toolchain (binutils/gcc) that
  148. provides libstdc++ linked with uClibc 0.9.10 will be released in the
  149. next couple of days, so stay tuned.
  150. <p>
  151. The <a href="downloads/Changelog">Changelog</a>
  152. and <a href="downloads/uClibc-0.9.10.tar.bz2">Source code</a>
  153. for this release are available <a href="downloads/">here</a>.
  154. <p>
  155. <p>
  156. <li> <b>4 February 2002, uClibc 0.9.9 Released!</b>
  157. <br>
  158. CodePoet Consulting is pleased to announce the immediate
  159. availability of uClibc 0.9.9. With this release,
  160. <a href="uClibc-apps.html">just about
  161. everything we have tested now compiles and runs</a>. In fact,
  162. there are now so many programs on the working application list that
  163. rather than continue to add to this list, from now on we
  164. will only be adding applications to the <em>not working list</em>. Most applications
  165. on the <em>not working list</em> either require pthreads, or require
  166. wide-character support. Work on wide-character support is
  167. well underway, and will hopefully be moving into CVS in the next week or
  168. two. Full pthreads support and rentrancy are on the TODO list
  169. and are expected to be complete in the next couple of months.
  170. <p>
  171. The <a href="downloads/Changelog">Changelog</a>
  172. and <a
  173. href="downloads/uClibc-0.9.9.tar.bz2">Source code</a>
  174. for this release are available <a href="downloads/">here</a>.
  175. <p>
  176. One final bit on news -- as some of you may have noticed, uclibc.org
  177. has been a bit overloaded and somewhat slow recently. The server should
  178. be getting colocated tomorrow, which will eliminate the speed problem.
  179. During the move, there may be some temporary disruption of service...
  180. <p>
  181. Have Fun!
  182. <p>
  183. <li> <b>22 December 2001, uClibc 0.9.8 Released!</b>
  184. <br>
  185. After many months of initial development, we are pleased to announce the
  186. release of uClibc 0.9.8. This release should be quite solid, and is very
  187. usable. This also, hopefully, marks a transition from a slow incubation
  188. phase to a more methodical release cycle. From now one, there should be
  189. approximately one release per month.
  190. <p>
  191. The source code for this release is available
  192. <a href="downloads/">here</a>.
  193. <p> <li> <b>Old News</b>
  194. <br>
  195. <a href="old-news.html">Click here to read older news</a>.
  196. <p>
  197. </ul>
  198. <!-- Begin Download section -->
  199. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  200. <A NAME="download"><BIG><B>
  201. Download
  202. </A></B></BIG>
  203. </TD></TR>
  204. <TR><TD BGCOLOR="#eeeee0">
  205. <ul>
  206. <li> There is now a script that creates a daily snapshot tarball of uClibc and posts it on
  207. <a href="downloads/uClibc-snapshot.tar.bz2">here</a>.
  208. <li> uClibc also has a publicly browsable
  209. <a href="/cgi-bin/cvsweb/uClibc/">CVS tree</a>
  210. <li> Anonymous
  211. <a href="cvs_anon.html">CVS access</a> is available, and
  212. <li> For those that are actively contributing there is even
  213. <a href="cvs_write.html">CVS write access</a>.
  214. </ul>
  215. <!-- Begin Applications section -->
  216. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  217. <A NAME="contribute"><BIG><B>
  218. Help Support uClibc development
  219. </A></B></BIG>
  220. </TD></TR>
  221. <TR><TD BGCOLOR="#eeeee0">
  222. Do you like uClibc? Do you need support? Do you need some feature
  223. added to uClibc? Then why not help out? We are happy to accept
  224. donations, provide support contracts, and implement funded feature
  225. requests. Additionally, uClibc is looking for corporate sponsors to
  226. assist development, pay for bandwidth, and help with hardware
  227. donations, especially donations of hardware for non-Intel
  228. architectures. Click here to help support uClibc and/or request
  229. features.
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  242. If you prefer to contact us directly for payments (we have a credit card machine so
  243. you can avoid online payments), hardware donations, support requests, etc., you can
  244. contact <a href="http://codepoet-consulting.com/">CodePoet Consulting</a> here.
  245. <!-- Begin TODO section -->
  246. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  247. <A NAME="todo"><BIG><B>
  248. TODO
  249. </A></B></BIG>
  250. </TD></TR>
  251. <TR><TD BGCOLOR="#eeeee0">
  252. Here are a few things on the TODO list:
  253. <ul>
  254. <li> Shared library support for all supported architectures.
  255. We now have our own ld.so, but it needs to be ported to
  256. support each architecture.
  257. <li> Shared library support for mmu-less systems. This is
  258. very doable (think of C++ vtables for example), but will
  259. take some work.
  260. <li> Someone (hopefully) needs to volunteer to take the
  261. <a href="http://www.linuxbase.org/test/">LSB Test Suite</a>,
  262. pull out the C library testing stuff, and convert it
  263. (perl script, by hand, I don't care how) into a form
  264. that is usable without having it take over your entire
  265. system (i.e. similar to what is currently in the uClibc
  266. test suite). This will be <em>enormously</em> helpful!
  267. <li> other things as I think of them.
  268. </ul>
  269. <!-- Begin Links section -->
  270. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  271. <A NAME="links">
  272. <BIG><B>
  273. Other Open Source C libraries:
  274. </A>
  275. </B></BIG>
  276. </A>
  277. </TD></TR>
  278. <TR><TD BGCOLOR="#eeeee0">
  279. <ul>
  280. <li><a href="http://www.gnu.org/software/libc/libc.html">GNU C Library (aka glibc)</a>
  281. <li> <a href="http://www.k9wk.com/cdoc.html">Al's FREE C Runtime Library</a>
  282. <li><a href="http://www.fefe.de/dietlibc/">diet libc </a>
  283. <li>the <a href="http://www.cs.vu.nl/~ast/minix.html">minix</a>
  284. <a href="http://www.cs.vu.nl/cgi-bin/raw/pub/minix/2.0.0/src.tar"
  285. >C library</a>
  286. <li> <a href="http://sources.redhat.com/newlib/">newlib</a>
  287. <li>and there is a
  288. <a href="ftp://sourceware.cygnus.com/pub/ecos/">C library</a>, for
  289. <a href="http://sources.redhat.com/ecos/">eCos</a> as well.
  290. <ul>
  291. <!-- Begin Links section -->
  292. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  293. <A NAME="links">
  294. <BIG><B>
  295. Links to other useful stuff
  296. </A>
  297. </B></BIG>
  298. </A>
  299. </TD></TR>
  300. <TR><TD BGCOLOR="#eeeee0">
  301. <ul>
  302. <li> <a href="http://www.uclibc.org/">The uClibc home page</a>
  303. <p>
  304. <li> <a href="http://busybox.net/">BusyBox</a>
  305. <p>
  306. <li> <a href="http://udhcp.busybox.net/">udhcp</a>
  307. <p>
  308. <li> <a href="http://www.uclinux.org/">The uClinux home page</a>
  309. <p>
  310. <li> <a href="http://cvs.uclinux.org/">The uClinux CVS repository</a>
  311. <p>
  312. <li> <a href="http://codepoet-consulting.com/">CodePoet Consulting</a>
  313. <p>
  314. </ul>
  315. <!-- End of Table -->
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  326. <a href="mailto:andersen@codepoet.org">Erik Andersen</a><BR>
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