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The clang/LLVM based ELLCC project (<a class="moz-txt-link-freetext" href="http://ellcc.org">http://ellcc.org</a>), after having
reached a huge milestone (
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charset=ISO-8859-1">
<a href="http://ellcc.org/blog/?p=231">http://ellcc.org/blog/?p=231</a>)
has now successfully compiled itself.<br>
<br>
The steps were:<br>
1. Use gcc to build the compiler with Linux standard libraries.<br>
2. Use ecc to build itself with libc++, libc++ABI, libunwind, musl,
and compiler-rt<br>
3. Use the newly built compiler to build itself again.<br>
<br>
One interesting side note: The compiler was 12MB smaller after it
built itself.<br>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">ct-fw-88
ellcc 622 % size */Release+Asserts/bin/ecc<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
text data bss dec hex filename<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">52415858
2152024 84768 54652650 341eeea
llvm-build/Release+Asserts/bin/ecc<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">40222706
2117136 135416 42475258 2881efa
llvm-build-self/Release+Asserts/bin/ecc<br>
</span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Even
more interesting, it was compiled statically. No dynamic
libraries needed:<br>
</span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">ct-fw-88
ellcc 623 % ldd */Release+Asserts/bin/ecc<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">llvm-build/Release+Asserts/bin/ecc:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
linux-vdso.so.1 => (0x00007fff2ffff000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
libz.so.1 => /lib64/libz.so.1 (0x00007facd87e1000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
libpthread.so.0 => /lib64/libpthread.so.0
(0x00007facd85c4000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
libncurses.so.5 => /lib64/libncurses.so.5
(0x00007facd837c000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
librt.so.1 => /lib64/librt.so.1 (0x00007facd8173000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
libdl.so.2 => /lib64/libdl.so.2 (0x00007facd7f6f000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
libstdc++.so.6 =>
/home/de023789/gnulocal/lib64/libstdc++.so.6
(0x00007facd7c6e000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
libm.so.6 => /lib64/libm.so.6 (0x00007facd7a18000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
libgcc_s.so.1 => /home/de023789/gnulocal/lib64/libgcc_s.so.1
(0x00007facd7803000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
libc.so.6 => /lib64/libc.so.6 (0x00007facd74a5000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
/lib64/ld-linux-x86-64.so.2 (0x00007facd89f7000)<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">llvm-build-self/Release+Asserts/bin/ecc:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">
not a dynamic executable<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">ct-fw-88
ellcc 624 %<br>
</span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">That
is very cool.<br>
</span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">-Rich<br>
</span></p>
<br>
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