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  4. <TITLE>uClibc -- a C library for embedded systems</TITLE>
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  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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  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
  30. yew-see-lib-see) is a C library for developing embedded Linux systems.
  31. It is much smaller than the
  32. <a href="http://www.gnu.org/software/libc/libc.html">GNU C Library</a>,
  33. but nearly all applications supported by glibc also work perfectly with
  34. uClibc. Porting applications from glibc to uClibc typically involves
  35. just recompiling the source code. uClibc even supports shared libraries
  36. and threading. It currently runs on <a href="http://kernel.org/">standard Linux</a>
  37. and <a href="http://www.uclinux.org">MMU-less (also known as µClinux)</a>
  38. systems with support for alpha, ARM, i386, i960, h8300, m68k, mips/mipsel,
  39. PowerPC, SH, SPARC, and v850 processors.
  40. <p>
  41. If you are building an embedded Linux system and you find that glibc is
  42. eating up too much space, you should consider using uClibc. If you are
  43. building a huge fileserver with 12 Terabytes of storage, than using
  44. glibc may be a better choice...
  45. <p>
  46. uClibc is maintained by
  47. <a href="http://www.codepoet.org/andersen/erik/erik.html">Erik Andersen</a>
  48. and is licensed under the
  49. <a href="http://www.gnu.org/copyleft/lgpl.html">GNU LIBRARY GENERAL PUBLIC LICENSE</a>
  50. . This license allows you to make closed source commercial applications using
  51. uClibc (Please consider sharing some of the money you make ;-). You do not need
  52. to give away all your source code just because you use uClibc and/or run on Linux.
  53. <p>
  54. <h3>Mailing List Information</h3>
  55. uClibc has a <a href="/lists/uclibc/">mailing list</a>.<br>
  56. To subscribe, go and visit
  57. <a href="http://www.uclibc.org/mailman/listinfo/uclibc">this page</a>.
  58. <p>
  59. <h3>Frequently Asked Questions</h3>
  60. Before asking questions on the uClibc mailing list,
  61. you might want to take a look at the
  62. <a href="FAQ.html">list of Frequently Asked Questions</a>
  63. or
  64. you might want to search the mailing list archives...
  65. <form method="GET" action="http://www.google.com/custom">
  66. <input type="hidden" name="domains" value="uclibc.org">
  67. <input type="hidden" name="sitesearch" value="uclibc.org">
  68. <a href="http://www.google.com"><img src="http://www.google.com/logos/Logo_25wht.gif" border="0" alt="Google" height="32" width="75" align="middle"></a>&nbsp;<input type="text" name="q" size="31" maxlength="255" value="">&nbsp;<input type="submit" name="sa" value="search the mailing list archives">...
  69. </form>
  70. <h3>Working Applications List</h3>
  71. These days, pretty much everything compiles with uClibc. This
  72. is a <a href="uClibc-apps.html">list of applications</a> that are known
  73. to work just fine with uClibc. Since most applications work just
  74. fine with uClibc, we are especially interested in knowing about any
  75. applications that either <em>do not compile</em> or <em>do not work</em>
  76. properly with uClibc. Submissions are welcome!
  77. <!-- Begin Latest News section -->
  78. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  79. <A NAME="news">
  80. <BIG><B>
  81. Latest News</A>
  82. </B></BIG>
  83. </A>
  84. </TD></TR>
  85. <TR><TD BGCOLOR="#eeeee0">
  86. <ul>
  87. <p>
  88. <li> <b>6 March 2003, development system updates</b>
  89. <br>
  90. The uClibc development systems for
  91. <a href="http://www.uclibc.org/downloads/root_fs-i386.bz2">i386</a>,
  92. <a href="http://www.uclibc.org/downloads/root_fs-powerpc.bz2">powerpc</a>,
  93. <a href="http://www.uclibc.org/downloads/root_fs-arm.bz2">arm</a>,
  94. and now for the first time
  95. <a href="http://www.uclibc.org/downloads/root_fs-mipsel.bz2">mips</a>,
  96. have been updated to uClibc 0.9.19. Several smaller problems
  97. have also been fixed up.
  98. <p>
  99. This is an ext2 filesystem that runs natively on the specified
  100. architecture. It contains all the development software you need to build
  101. your own uClibc applications, including bash, coreutils, findutils,
  102. diffutils, patch, sed, ed, flex, bison, file, gawk, tar, grep gdb, strace,
  103. make, gcc, g++, autoconf, automake, ncurses, zlib, openssl, openssh and
  104. more. And of course, everything is dynamically linked against uClibc. By
  105. using a uClibc only system, you can avoid all the painful
  106. cross-configuration problems that have made using uClibc somewhat painful
  107. in the past. If you want to quickly get started with testing or using
  108. uClibc you should give these images a try. You can loop mount and
  109. then chroot into them, you can boot into them using user-mode Linux,
  110. you can even 'dd' them to a spare partition and use resize2fs to
  111. make them fill the drive. Whatever works best for you.
  112. <p>
  113. Have Fun.
  114. <p>
  115. <p>
  116. <li> <b>3 March 2003, uClibc 0.9.19 Released</b>
  117. <br>
  118. CodePoet Consulting is pleased to announce the immediate availability of
  119. uClibc 0.9.19. This is once again primarily a bug-fix release. Several
  120. critical problems with system calls were fixed, the pthreads library was
  121. improved, debugging of applications using uClibc's pthreads library is
  122. now possible (requires gdb 5.3 or newer that is compiled using uClibc),
  123. and a number of other random fixes are included. This release retains
  124. binary compatibility with uClibc 0.9.18 (except for mips, which didn't
  125. work properly with uClibc 0.9.18 anyways). Updated development system
  126. images compiled with uClibc 0.9.19 will be released shortly.
  127. <p>
  128. As usual, the
  129. <a href="http://www.uclibc.org/downloads/Changelog">Changelog</a> and <a
  130. href="http://www.uclibc.org/downloads/uClibc-0.9.19.tar.bz2">source code for this release</a>
  131. are available <a href="http://www.uclibc.org/downloads/">here</a>.
  132. <p>
  133. <p> <li> <b>Old News</b>
  134. <br>
  135. <a href="old-news.html">Click here to read older news</a>.
  136. <p>
  137. </ul>
  138. <!-- Begin Sponsors section -->
  139. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  140. <A NAME="sponsors"><BIG><B>
  141. Sponsors
  142. </A></B></BIG>
  143. </TD></TR>
  144. <tr><td bgcolor="#EEEEE0">
  145. Please visit our sponsors and thank them for their support! They have
  146. provided money, equipment, bandwidth, etc. Next time you need help with a
  147. project, consider these fine companies! Several individuals have also
  148. contributed (If you have contributed and would like your name added here,
  149. just email Erik and let him know).
  150. <ul>
  151. <li><a href="http://www.penguru.net">Penguru Consulting</a><br>
  152. Custom development for embedded Linux systems and multimedia platforms</li>
  153. <li><a href="http://opensource.se/">opensource.se</a><br>
  154. Embedded open source consulting in Europe.</li>
  155. <li><a href="http://www.codepoet-consulting.com">Codepoet Consulting</a><br>
  156. Custom Linux, embedded Linux, BusyBox, and uClibc development.</li>
  157. </ul>
  158. <table CELLSPACING=6 CELLPADDING=6 BORDER=0><tr>
  159. <td>
  160. Do you like uClibc? Do you need support? Do you need some feature
  161. added? Then why not help out? We are happy to accept donations
  162. (such as bandwidth, mirrors sites, and hardware for the various
  163. architectures). We can also provide support contracts, and implement
  164. funded feature requests. To contribute, you can either click on the
  165. Donate image to donate using PayPal, or you can contact Erik at
  166. <a href="http://codepoet-consulting.com/">CodePoet Consulting</a>
  167. (we have a credit card machine so you can avoid PayPal if you wish).
  168. </td>
  169. <td>
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  172. <input type="hidden" name="cmd" value="_xclick">
  173. <input type="hidden" name="business" value="andersen@codepoet.org">
  174. <input type="hidden" name="item_name" value="Support uClibc">
  175. <input type="hidden" name="image_url" value="https://codepoet-consulting.com/images/codepoet.png">
  176. <input type="hidden" name="no_shipping" value="1">
  177. <input type="image" src="images/donate.png" border="0" name="submit" alt="Make donation using PayPal">
  178. </form>
  179. </td>
  180. <!-- End PayPal Logo -->
  181. </tr>
  182. </table>
  183. <!-- Begin Download section -->
  184. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  185. <A NAME="download"><BIG><B>
  186. Download
  187. </A></B></BIG>
  188. </TD></TR>
  189. <TR><TD BGCOLOR="#eeeee0">
  190. <ul>
  191. <li> Source for the latest release can always be downloaded from
  192. <a href="downloads/">http://www.uclibc.org/downloads</a>
  193. <li> You may want to download uClibc from the closest
  194. <a href="http://kernel.org/mirrors/">kernel.org mirror site</a>.
  195. Just pick the closest mirror site, and then go to the
  196. <a href="http://www.kernel.org/pub/linux/libs/uclibc/">/pub/linux/libs/uclibc/</a>
  197. directory to download uClibc.
  198. <li> A <a href="downloads/snapshots/">daily snapshot of the source</a> is
  199. available for those wishing to follow uClibc developments, but cannot
  200. or do not wish to use CVS.
  201. <li> uClibc has a publically <a href="/cgi-bin/cvsweb/uClibc/">browsable CVS tree</a>.
  202. <li> <a href="cvs_anon.html">Anonymous CVS access</a> is available to let you track development.
  203. <li> <a href="cvs_write.html">CVS write access</a> is also available for those that are actively
  204. contributing.
  205. </ul>
  206. <!-- Begin Toolchain section -->
  207. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  208. <A NAME="toolchain"><BIG><B>
  209. Toolchains
  210. </A></B></BIG>
  211. </TD></TR>
  212. <TR><TD BGCOLOR="#eeeee0">
  213. <ul>
  214. <li>Steven J. Hill has kindly provided
  215. <a href="ftp://ftp.realitydiluted.com/linux/MIPS/toolchains">RPMs and SRPMs</a>
  216. with toolchains for mips.
  217. <li>You can build your own
  218. <a href="/cgi-bin/cvsweb/toolchain/">uClibc toolchain</a>
  219. using these Makefiles which automagically download all the source
  220. needed code and compile it for you.
  221. <li>uClibc development systems for
  222. <a href="http://www.uclibc.org/downloads/root_fs-i386.bz2">i386</a>
  223. and
  224. <a href="http://www.uclibc.org/downloads/root_fs-powerpc.bz2">powerpc</a>,
  225. and
  226. <a href="http://www.uclibc.org/downloads/root_fs-arm.bz2">arm</a>
  227. are available and contain complete gcc 3.2.2 toolchains.
  228. <li>You can compile your own uClibc development system using
  229. <a href="/cgi-bin/cvsweb/buildroot/">buildroot</a>.
  230. </ul>
  231. <!-- Begin Links section -->
  232. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  233. <A NAME="links">
  234. <BIG><B>
  235. Other Open Source C libraries:
  236. </A>
  237. </B></BIG>
  238. </A>
  239. </TD></TR>
  240. <TR><TD BGCOLOR="#eeeee0">
  241. I am currently aware of the following open source C libraries.
  242. <ul>
  243. <li><a href="http://www.gnu.org/software/libc/libc.html">GNU C Library (aka glibc)</a>
  244. <li> <a href="http://www.k9wk.com/cdoc.html">Al's FREE C Runtime Library</a>
  245. <li><a href="http://www.fefe.de/dietlibc/">diet libc </a>
  246. <li>the <a href="http://www.cs.vu.nl/~ast/minix.html">minix</a>
  247. <a href="http://www.cs.vu.nl/cgi-bin/raw/pub/minix/2.0.0/src.tar"
  248. >C library</a>
  249. <li> <a href="http://sources.redhat.com/newlib/">newlib</a>
  250. <li>and there is a
  251. <a href="ftp://sourceware.cygnus.com/pub/ecos/">C library</a>, for
  252. <a href="http://sources.redhat.com/ecos/">eCos</a> as well.
  253. <ul>
  254. <!-- Begin Links section -->
  255. <TR><TD BGCOLOR="#ccccc0" ALIGN=center>
  256. <A NAME="links">
  257. <BIG><B>
  258. Links to other useful stuff
  259. </A>
  260. </B></BIG>
  261. </A>
  262. </TD></TR>
  263. <TR><TD BGCOLOR="#eeeee0">
  264. <ul>
  265. <li> <a href="http://www.uclibc.org/">The uClibc home page</a>
  266. <p>
  267. <li> <a href="/cgi-bin/cvsweb/uClibc/">The uClibc CVS tree</a>
  268. <p>
  269. <li> <a href="http://busybox.net/">BusyBox</a>
  270. <p>
  271. <li> <a href="http://udhcp.busybox.net/">udhcp</a>
  272. <p>
  273. <li> <a href="http://www.uclinux.org/">The uClinux home page</a>
  274. <p>
  275. <li> <a href="http://cvs.uclinux.org/">The uClinux CVS repository</a>
  276. <p>
  277. <li> <a href="http://codepoet-consulting.com/">CodePoet Consulting</a>
  278. <p>
  279. </ul>
  280. <!-- End of Table -->
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