Ashin Walpola
0e9525162d
obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but that tree was gitignored, so a clone of this repository could not build the firmware it ships. It is now committed here as ordinary files in its own folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP bridge's signature verification (--trust) used on the bench. Nothing is fetched from or pushed to the colleague's repository; this repository and its remotes carry everything. The folder's own .gitignore keeps build output, downloaded components and private key material out, as it did there; the committed file set is identical to that repository's tracked files. The ESP32-C5 is still flashed from obu-firmware/, which only takes vanetza-idf from microbu-esp32c5/, so the two stay separate folders. FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
56 lines
1.8 KiB
Markdown
56 lines
1.8 KiB
Markdown
# Cross-Compilation of Dependencies
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This document summarises a few hints for cross-compiling Vanetza's dependencies.
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Please note, that cross-compiling is not relevant for you if you plan to use Vanetza on the same system you have built it on.
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## Boost
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Create a configuration file for Boost.Build in your home directory at `$HOME/user-config.jam` and add following line to it:
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using gcc : arm : arm-linux-gnueabihf-g++ ;
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The *install* stage does not work in Boost 1.71.0 (and 1.70.0) when cross-compiling.
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A workaround for this issue is to remove following lines from `tools/build/src/tools/common.jam` (around line 976):
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# From GCC 5, versioning changes and minor becomes patch
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if $(tag) = gcc && [ numbers.less 4 $(version[1]) ]
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{
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version = $(version[1]) ;
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}
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# Ditto, from Clang 4
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if ( $(tag) = clang || $(tag) = clangw ) && [ numbers.less 3 $(version[1]) ]
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{
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version = $(version[1]) ;
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}
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Then, the required libraries can be built and installed at given *prefix* path:
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:::shell
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./b2 --prefix=$HOME/vanetza-deps --with-date_time --with-program_options --with-system --no-samples --no-tests variant=release link=shared cxxstd=11 install
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## Crypto++
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Version 8.2 can be cross-compiled with the provided `GNUmakefile-cross` makefile.
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:::shell
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export CXX=arm-linux-gnueabihf-g++
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export PREFIX=$HOME/vanetza-deps
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export HAS_SOLIB_VERSION=1
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make -f GNUmakefile-cross shared
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make -f GNUmakefile-cross install
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## GeographicLib
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Following steps have been tested with version 1.50.
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`$VANETZA` refers to the root directory of this repository.
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:::shell
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mkdir build.arm
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cd build.arm
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cmake .. -DCMAKE_TOOLCHAIN_FILE=$VANETZA/cmake/Toolchain-Cohda-MK5.cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$HOME/vanetza-deps
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make install
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