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<h1 id="firstHeading" class="firstHeading">Compiling a lightweight AEMB toolchain</h1>
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<h3 id="siteSub">From Milkymist Wiki</h3>
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<div id="jump-to-nav">Jump to: <a href="index.php%3Ftitle=Compiling_a_lightweight_AEMB_toolchain.html#column-one">navigation</a>, <a href="index.php%3Ftitle=Compiling_a_lightweight_AEMB_toolchain.html#searchInput">search</a></div> <!-- start content -->
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<p>NB! This page applies to old SoC designs that were using AEMB. Current designs use Mico32 and need a different toolchain.
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</p><p>To compile the BIOS and the demonstration firmware which come with the SoC core distribution, you do not need all the features of the complete Microblaze toolchain. This section explains how to compile a toolchain without the spurious features.
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</p><p>For Microblaze support, a modified version of the GNU toolchain should be used. It is available from the Petalogix website at <a href="http://www.petalogix.com/resources/downloads/mb-gcc" class="external free" title="http://www.petalogix.com/resources/downloads/mb-gcc" rel="nofollow">http://www.petalogix.com/resources/downloads/mb-gcc</a>.
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To install it, the following commands are used:
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<code>
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mkdir /usr/microblaze
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</p><p>export PATH=$PATH:/usr/microblaze/bin
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</p><p>cd microblaze-toolchain-sources/srcs/binutils
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</p><p>mkdir build
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</p><p>cd build
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</p><p>../configure --target=microblaze --prefix=/usr/microblaze
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</p><p>make all CFLAGS="-O2 -g -DMICROBLAZE -DEDK" CXXFLAGS="-O2 -g -DMICROBLAZE -DEDK"
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</p><p>make install
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</p><p>ln -s /usr/microblaze/bin/microblaze-as /usr/microblaze/bin/mb-as
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</p><p>ln -s /usr/microblaze/bin/microblaze-ld /usr/microblaze/bin/mb-ld
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</p><p>ln -s /usr/microblaze/bin/microblaze-ar /usr/microblaze/bin/mb-ar
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</p><p>ln -s /usr/microblaze/bin/microblaze-ranlib /usr/microblaze/bin/mb-ranlib
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</p><p>cd ../../gcc
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</p><p>mkdir build
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</p><p>cd build
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</p><p>../configure --target=microblaze --prefix=/usr/microblaze --enable-languages="c"
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</p><p>make all CFLAGS="-O2 -g -DMICROBLAZE -DEDK" CXXFLAGS="-O2 -g -DMICROBLAZE -DEDK"
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</p><p>make install
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</p><p>ln -s /usr/microblaze/bin/microblaze-gcc /usr/microblaze/bin/mb-gcc
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</code>
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</p><p>This differs from the usual installation procedure by disabling C++ support and Newlib. The Milkymist BIOS and demonstration firmware do not use C++ and come with their own lightweight C library and startup code.
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</p><p>If using another firmware with the Milkymist SoC, this toolchain may not be suitable.
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</p>
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<li id="lastmod"> This page was last modified on 25 June 2009, at 09:54.</li>
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