Buildroot External for Mapbox

This external extension contains packages definitions for building the Mapbox Qt SDK for Buildroot.

These configurations where heavily inspired on meta-mapbox Github repository.

Dependencies

• Toolchain with C++ support
• Toolchain with wchar support
• OpenGL or OpenGL ES2 support
• Qt5 modules

Usage

There is a configure.sh script to automate your building. It basically fetches 2016-02 version of buildroot and points it to the br-external structure.

make BR2_EXTERNAL=$PWD/br-external -C buildroot O=$PWD/output/fancyboard qemu_x86_64_defconfig
cd output/fancyboard

Enable GlibC on the toolchain configuration.

make menuconfig
Toolchain -> Enable C++ Support

Select an OpenGL EL or OpenGL ES2 implementation, e.g. Mesa:

Target Packages -> Graphical Libraries -> mesa3d
[x] Gallium swrast driver
[x] OpenGL ES

Check for mapbox packages configuration

User-Provided options -> Mapbox packages -> ...

Enable framebuffer device on kernel

make linux-menuconfig
Device Drivers -> Graphics Support -> QXL Virtual GPU

Build all packages.

make

Run qemu with the following options.

qemu-system-x86_64 -M pc -kernel images/bzImage -drive file=images/rootfs.ext2,if=ide,format=raw -append root=/dev/sda -net nic,model=rtl8139 -net user -vga qxl

Caveats

• Does not compile on UCLIBC-based toolchain
• qemu_x86_64_defconfig target is not a good choice due to its bad framebuffer support
• Not tested on real hardware