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Toolchain » History » Version 19

fixeria, 05/14/2019 08:44 AM

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h1. Toolchain
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To compile the target firmware for [[OsmocomBB]] or [[SIMtrace:]], you need a GNU Toolchain for ARM. There are various pre-compiled toolchains available, but not all of them will produce working firmware. We're trying to support all these configurations, but it might take a while to identify the source of a problem. If you have persistent errors when compiling, try using a different package.
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h3. Binary distribution
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You can use a pre-compiled toolchain provided by your GNU/Linux distribution.
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For Debian based distributions (Ubuntu, Linux Mint, etc.), use the following command:
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<pre>
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$ sudo apt install gcc-arm-none-eabi
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</pre>
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For ArchLinux (https://www.archlinux.org/packages/community/x86_64/arm-none-eabi-gcc/):
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<pre>
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$ sudo pacman -S arm-none-eabi-gcc arm-none-eabi-newlib
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</pre>
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h3. Build one from source
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If you want to build your own toolchain, known to be working with [[OsmocomBB]], see here: [[GnuArmToolchain]].
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This is the best option to get a fairly recent GCC, and this is the option used by several [[OsmocomBB]] developers.
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h3. Building old branches
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If you need to build the *firmware from old unmaintained branches* (sylvain/burst_ind, sylvain/testing, jolly/testing, etc.), an older version of toolchain is needed.
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Please follow the build instructions at: https://github.com/axilirator/gnu-arm-installer/
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When using toolchain with GCC >=4.8, the firmware can be compiled, but will hang as soon as you want to sync to an ARFCN.
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This issue has been fixed in master: http://cgit.osmocom.org/osmocom-bb/commit/?id=a903b3c1ee27047c79728b18ff6340d23d1aad2e.
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h3. Mac OS X
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Apparently the arm-elf-gcc 4.3.2 from ports for MacOS X can compile the firmware as well after symlinking _/opt/local/bin/arm-elf-ranlib_ to _/opt/local/bin/arm-elf-linux-ranlib_ and _/opt/local/bin/arm-elf-strip_ to _/opt/local/bin/arm-elf-linux-strip_. If you omit the links, there will be unresolvable references to symbols in the libraries.
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