| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410 | <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <HTML><HEAD><TITLE>uClibc -- a C library for embedded systems</TITLE></HEAD><body text="#000000" alink="#660000" link="#660000" bgcolor="#dee2de" vlink="#660000"><basefont face="lucida, helvetica, arial" size="3"><CENTER><p><TABLE BORDER=0 CELLSPACING=1 CELLPADDING=2>    <TR>	<td bgcolor="#000000">	  <FONT FACE="lucida, helvetica" COLOR="#ccccc0">	      <B>µ C l i b c</B>	  </FONT>	</TD>    </TR></TABLE><p><!-- Begin Introduction section --><TABLE WIDTH=95% CELLSPACING=1 CELLPADDING=4 BORDER=1><TR><TD BGCOLOR="#ccccc0" ALIGN=center>    <A NAME="intro"> <BIG><B>    uClibc -- a C library for embedded systems    </font>    </A></B></BIG></TD></TR><TR><TD BGCOLOR="#eeeee0"><a href="http://www.uclibc.org">uClibc</a> (aka µClibc/pronouncedyew-see-lib-see) is a C library for developing embedded Linux systems.It is much smaller than the <a href="http://www.gnu.org/software/libc/libc.html">GNU C Library</a>,but nearly all applications supported by glibc also work perfectly withuClibc. Porting applications from glibc to uClibc typically involvesjust recompiling the source code. uClibc even supports shared librariesand threading.  It currently runs on <a href="http://kernel.org/">standard Linux</a> and <a href="http://www.uclinux.org">MMU-less (also known as µClinux)</a>systems with support for alpha, ARM, i386, i960, h8300, m68k, mips/mipsel, PowerPC, SH, SPARC, and v850 processors.<p>If you are building an embedded Linux system and you find that glibc iseating up too much space, you should consider using uClibc.  If you arebuilding a huge fileserver with 12 Terabytes of storage, than usingglibc may be a better choice...<p>uClibc is maintained by <a href="http://www.codepoet.org/andersen/erik/erik.html">Erik Andersen</a>and is licensed under the <a href="http://www.gnu.org/copyleft/lgpl.html">GNU LIBRARY GENERAL PUBLIC LICENSE</a>.  This license allows you to make closed source commercial applications using uClibc (Please consider sharing some of the money you make ;-).  You do not need to give away all your source code just because you use uClibc and/or run on Linux.<p><h3>Mailing List Information</h3>uClibc has a <a href="/lists/uclibc/">mailing list</a>.<br>To subscribe, go and visit <a href="http://www.uclibc.org/mailman/listinfo/uclibc">this page</a>.<p><h3>Frequently Asked Questions</h3>Before asking questions on the uClibc mailing list,you might want to take a look at the <a href="FAQ.html">list of Frequently Asked Questions</a>or you might want to search the mailing list archives...<form method="GET" action="http://www.google.com/custom"><input type="hidden" name="domains" value="uclibc.org"><input type="hidden" name="sitesearch" value="uclibc.org"><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> <input type="text" name="q" size="31" maxlength="255" value=""> <input type="submit" name="sa" value="search the mailing list archives">...</form><h3>Working Applications List</h3>    These days, pretty much everything compiles with uClibc.  This    is a <a href="uClibc-apps.html">list of applications</a> that are known     to work just fine with uClibc.  Since most applications work just     fine with uClibc, we are especially interested in knowing about any     applications that either <em>do not compile</em> or <em>do not work</em>     properly with uClibc.  Submissions are welcome!        <!-- Begin Latest News section --><TR><TD BGCOLOR="#ccccc0" ALIGN=center>    <A NAME="news">    <BIG><B>    Latest News</A>     </B></BIG>    </A></TD></TR><TR><TD BGCOLOR="#eeeee0"><ul>        <p>    <li> <b>8 November 2002, uClibc 0.9.16 Released</b>    <br>    CodePoet Consulting is pleased to announce the immediate availability of    uClibc 0.9.16.  This release adds full support (including a native shared    library loader) for the CRIS architecture, contributed by Tobias Anderberg.    Stefan Allius contributed a number of patches to fix the initialization    order for shared library global constructors and destructors as well as a    large number of SuperH fixes and cleanups.  uClibc now compiles with    newer versions of gcc (i.e. RedHat 8.0).  Thanks to Christian Michon,    uClibc no longer requires perl to compile.  Steven J. Hill fixed dlopen for    mips.  Several problems with pty and tty handling were fixed.  Manuel Novoa    added new support for an /etc/TZ file to globally set the system timezone,    and fixed up a number of remaining wide char issues.  Manuel is still hard    at work on bringing full locale support (optional of course) to uClibc.    And of course, this release includes the usual pile of bug fixes.  Many thanks    for the large number of patches and fixes that were contributed!    <p>    Erik and Manuel have been working on a     <a href="downloads/Glibc_vs_uClibc_Differences.txt">    document describing some of the differences between uClibc and glibc.</a>    It's not yet 100% complete, and it hasn't been nicely formatted yet.  But    it contains a lot of helpful information and is worth a look.    <p>    And finally, the the old uClibc configuration system has been completely    removed (and there was much rejoicing).  It was replaced with an entirely    new system based on <a href="http://www.xs4all.nl/~zippel/lc/">LinuxKernelConf</a>,     which has since been included into Linux 2.5.45, so it looks like Erik made     the right choice.  Of course, those who have existing build systems using uClibc     will need to make a few changes...  We think the change is worth it.    <p>    As usual, the     <a href="http://www.kernel.org/pub/linux/libs/uclibc/Changelog">Changelog</a>    and <a href="http://www.kernel.org/pub/linux/libs/uclibc/uClibc-0.9.16.tar.bz2">source code</a>     for this release are available <a href="http://www.kernel.org/pub/linux/libs/uclibc/">here</a>.    You might want to download uClibc from the closest     <a href="http://kernel.org/mirrors/">kernel.org mirror site</a>.    Just pick the closest mirror site, and then go to     <a href="http://www.kernel.org/pub/linux/libs/uclibc/">    http://www.XX.kernel.org/pub/linux/libs/uclibc/</a>    to download uClibc, where XX is your two letter country code.    <p>    Updated gcc-3.2 and gcc-2.95 toolchains will be released shortly.     <p>    <p>    <li> <b>16 September 2002, gcc-3.2 and gcc-2.95 toolchains released</b>    <br>    CodePoet Consulting (i.e. Erik) has released updated gcc-3.2 and gcc-2.95    uClibc toolchains.  These toolchains build real gcc cross compilers (i.e.    not just a wrapper) and create executables linked vs uClibc.   The new    gcc-3.2 provides uClibc support with the latest and greatest compiler    available from the gcc team.  The gcc-2.95 toolchain has been updated to    the latest version of uClibc and now provides full C++ support, using the    <a href="http://www.stlport.org/">STLport</a> standard C++ library.    <p>    This toolchain should make it easy for anyone to build uClibc based     applications.  <a href="http://www.kernel.org/pub/linux/libs/uclibc/toolchain/">    Source code can be downloaded here</a>.     Be aware that much of the needed source code will actually be downloaded on    when you compile the toolchains.  To build a toolchain, simply    grab the source, edit the Makefile to select where you would like    the toolchain installed, run 'make', and then go watch TV, eat    dinner, or visit with your friends while it compiles.  It takes    about 15 minutes for Erik to compile the gcc-3.2 toolchain (w/C++ support)    on his Athlon XP 1600 (not counting the time it takes to download    source code).    <p>    <p> <li> <b>Old News</b>    <br>    <a href="old-news.html">Click here to read older news</a>.    <p></ul><!-- Begin Sponsors section --><TR><TD BGCOLOR="#ccccc0" ALIGN=center>    <A NAME="sponsors"><BIG><B>    Sponsors    </A></B></BIG></TD></TR><tr><td bgcolor="#EEEEE0">    Please visit our sponsors and thank them for their support! They have    provided money, equipment, bandwidth, etc. Next time you need help with a    project, consider these fine companies!  Several individuals have also    contributed (If you have contributed and would like your name added here,    just email Erik and let him know).    <ul>      <li><a href="http://opensource.se/">opensource.se</a><br>      Embedded open source consulting in Europe.</li>      <li><a href="http://i-netinnovations.com/">http://i-netinnovations.com/</a><br>      Web hosting (currently hosting busybox.net and uclibc.org)</li>      <li><a href="http://www.lineo.com">Lineo</a><br>      Embedded Linux development and services.</li>      <li><a href="http://www.codepoet-consulting.com">Codepoet Consulting</a><br>      Custom Linux, embedded Linux, BusyBox, and uClibc development.</li>    </ul>    <table CELLSPACING=6 CELLPADDING=6 BORDER=0><tr>    <td>    Do you like uClibc?  Do you need support?  Do you need some feature    added?   Then why not help out?  We are happy to accept donations    (such as bandwidth, mirrors sites, and hardware for the various    architectures).  We can also provide support contracts, and implement     funded feature requests.  To contribute, you can either click on the     Donate image to donate using PayPal, or you can contact Erik at     <a href="http://codepoet-consulting.com/">CodePoet Consulting</a>     (we have a credit card machine so you can avoid PayPal if you wish).    </td>    <td>    <!-- Begin PayPal Logo -->    <form action="https://www.paypal.com/cgi-bin/webscr" method="post">	<input type="hidden" name="cmd" value="_xclick">	<input type="hidden" name="business" value="andersen@codepoet.org">	<input type="hidden" name="item_name" value="Support uClibc">	<input type="hidden" name="image_url" value="https://codepoet-consulting.com/images/codepoet.png">	<input type="hidden" name="no_shipping" value="1">	<input type="image" src="images/donate.png" border="0" name="submit" alt="Make donation using PayPal">    </form>    </td>    <!-- End PayPal Logo -->        </tr>    </table>    <!-- Begin Download section --><TR><TD BGCOLOR="#ccccc0" ALIGN=center>    <A NAME="download"><BIG><B>    Download    </A></B></BIG></TD></TR><TR><TD BGCOLOR="#eeeee0"><ul>    <li> Source for the latest release can always be downloaded from 	<a href="downloads/">http://www.uclibc.org/downloads</a>    <li> A <a href="downloads/snapshots/">daily snapshot of the source</a> is 	available for those wishing to follow uClibc developments, but cannot 	or do not wish to use CVS.    <li> uClibc has a publically <a href="/cgi-bin/cvsweb/uClibc/">browsable CVS tree</a>.    <li> <a href="cvs_anon.html">Anonymous CVS access</a> is available to let you track development.    <li> <a href="cvs_write.html">CVS write access</a> is also available for those that are actively	contributing.</ul>    <!-- Begin Links section --><TR><TD BGCOLOR="#ccccc0" ALIGN=center>    <A NAME="links">    <BIG><B>    Other Open Source C libraries:    </A>    </B></BIG>    </A></TD></TR><TR><TD BGCOLOR="#eeeee0">I am currently aware of the following open source C libraries.<ul> <li><a href="http://www.gnu.org/software/libc/libc.html">GNU C Library (aka glibc)</a> <li> <a href="http://www.k9wk.com/cdoc.html">Al's FREE C Runtime Library</a><li><a href="http://www.fefe.de/dietlibc/">diet libc </a><li>the <a href="http://www.cs.vu.nl/~ast/minix.html">minix</a>     <a href="http://www.cs.vu.nl/cgi-bin/raw/pub/minix/2.0.0/src.tar"    >C library</a><li> <a href="http://sources.redhat.com/newlib/">newlib</a><li>and there is a      <a href="ftp://sourceware.cygnus.com/pub/ecos/">C library</a>, for    <a href="http://sources.redhat.com/ecos/">eCos</a> as well.<ul><!-- Begin Links section --><TR><TD BGCOLOR="#ccccc0" ALIGN=center>    <A NAME="links">    <BIG><B>    Links to other useful stuff    </A>    </B></BIG>    </A></TD></TR><TR><TD BGCOLOR="#eeeee0"><ul>     <li> <a href="http://www.uclibc.org/">The uClibc home page</a>    <p>    <li> <a href="/cgi-bin/cvsweb/uClibc/">The uClibc CVS tree</a>    <p>    <li> <a href="http://busybox.net/">BusyBox</a>    <p>    <li> <a href="http://udhcp.busybox.net/">udhcp</a>    <p>    <li> <a href="http://www.uclinux.org/">The uClinux home page</a>    <p>    <li> <a href="http://cvs.uclinux.org/">The uClinux CVS repository</a>    <p>    <li> <a href="http://codepoet-consulting.com/">CodePoet Consulting</a>    <p></ul><!-- End of Table --></TD></TR></TABLE></P><!-- Footer --><HR><TABLE WIDTH="100%">    <TR>	<TD>	    <font size="-1" face="arial, helvetica, sans-serif">	    Mail all comments, insults, suggestions and bribes to 	    <a href="mailto:andersen@codepoet.org">Erik Andersen</a><BR>	    </font>	</TD>	<TD>	    <a href="http://www.vim.org"><img border=0 width=90 height=36	    src="images/written.in.vi.png" 	    alt="This site created with the vi editor"></a>	</TD>	<TD>	    <a href="http://www.gimp.org/"><img border=0 width=90 height=36	    src="images/gfx_by_gimp.png" alt="Graphics by GIMP"></a>	</TD>	<TD>	    <a href="http://www.linuxtoday.com"><img width=90 height=36	    src="images/ltbutton2.png" alt="Linux Today"></a>	</TD>	<TD>	    <p><a href="http://slashdot.org"><img width=90 height=36	    src="images/sdsmall.png" alt="Slashdot"></a>	</TD>	<TD>	    <a href="http://freshmeat.net"><img width=90 height=36	    src="images/fm.mini.png" alt="Freshmeat"></a>	</TD>    </TR></TABLE></CENTER></BODY></HTML> 
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