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| Cross-compiling SDL for the Ubuntu Phone is possible, and fairly simple. | |
| 1) Install the Ubuntu SDK | |
| 2) Create a development chroot: | |
| $ sudo click chroot -a armhf -f ubuntu-sdk-14.10 create | |
| 3) Obtain the SDL sources from mercurial or a tarball. The sources for the | |
| supplied SDL build are included in this repo and were obtained from | |
| mercurial on 2015-05-22. | |
| 4) Log in to your chroot as root. You will have to be root to install | |
| packages, as you cannot use "sudo" in the chroot by default. The installed | |
| packages will be lost when you log out of the chroot, and the chroot will | |
| return to a pristine state. If you wish to keep the changes, log in with | |
| "maint" instead of "run": | |
| $ sudo click chroot -a armhf -f ubuntu-sdk-14.10 run | |
| 5) Install the minimal dependencies for SDL: | |
| # apt-get install libxkbcommon-dev:armhf libdbus-1-dev:armhf | |
| 6) Drop priveleges - don't build as root! | |
| # su your_username | |
| 7) Create a build directory and change to it: | |
| $ mkdir SDL2-2.0.4/build && cd SDL2-2.0.4/build | |
| 8) Configure the build, disabling broken or unneeded components. Building with | |
| debugging symbols and no optimisation will help us all: | |
| $ PKG_CONFIG_PATH=/usr/lib/arm-linux-gnueabihf/pkgconfig/ \ | |
| ../configure --host=arm-linux-gnueabihf CFLAGS="-g -O0" \ | |
| --disable-mir-shared --disable-video-opengl \ | |
| --disable-video-wayland --disable-video-x11 --prefix=/tmp/mysdlbuild | |
| 9) Build: | |
| $ make && make install | |
| The libraries will be installed in /tmp/mysdlbuild/lib/ and can be copied into | |
| the template lib/armhf directory. | |
| TODO: this builds a very minimal SDL. Please experiment with additional audio | |
| drivers etc and feed back whether they work. Thanks. |