Just started my career as an embedded dev in an automobile company. My head used to spin when I heard cross-compilation for armhf. This is exactly what I needed. Keep up the good work! You just got a new subscriber:)
YOU NAILED IT. Spent literally days to move from theory to practice, and you have just smashed it, just like that, making me feel like a noob. Liked and subscribed bro.
I had been struggling to cross-compile my application for NXP/Freescale i.mx6ul processor. Your article and video provided all the clarifications needed to actually build and copy executable on target machine and simply run it. Many thanks once again.
Great video - direct, and to the point. I stopped it multiple times and replicated the steps on my systems to insure I understood. Everything functioned exactly as shown. Thanks again.
Well explained. I wish to see a few more videos on same topic. For example : cross compiling by connecting host machine's root directory by using sshfs and maybe even more practical example with cmake projects. Thanks for informative video .
Thanks for the excellent introduction. My case is needing aarch64 native extensions for Ruby but built on x86_64, since that's all we have for CI build hosts.
Great explanation. I want to do dynamic linking for my application and my libraries at host machine. Can someone point me on how to do this? How to find all dependency of my application, group all of them together at build machine. Later at run time at host, provide proper runtime environment variable to correctly run the application. Looking forward to responses.
Generally, works fine except for big endian. When using option '-mbig-endian' it's only possible to compile object files. When building shared libraries or ELF files, error "libstdc++.so (wrong file format)" is issued. It seems the linker tries to use the little-endian version of the .so file.
Enjoyed your training video. Have you ever tried to run a source-code security scan, like Fortify SCA for example, on a Linux Cross-Compiler-based software project?
Similar approach for that. Pre-compile any prerequisites by doing ./configure and make. Then do the same for the actual package/binary that you want to compile. As I did for tcpdump in the video. Usually a bit of reading is required for the specifics/flags for each tool.
Thank you for the nice video.But i am unable to compile c++ code, the arm c++ compiler throws the error "fatal error: cannot execute ‘cc1plus’: execvp: No such file or directory". Any idea how can i get through?Thanks again.
Muito obrigado por ensinar como complilar para arm, eu estou tentando instalar o yay(aur) no termux e não sei se o yay funciona fora do archlinux, instalei o pacman no termux e configurei tudo certinho mas o yay precisa da linguagem go 1.19 e o termux instala o go 1.12 e não tem o binário pronto em arm, então estou tentando compilar o go 1.19 para instalar o yay no termux.
@@jensdbe Thanks for your reply. Is it possiable to install the required arm64 libraries on a amd64 Ubuntu Computer.So I can cross-compile my own library to arm64.
I am not familiar with compiled languages. Could someone explain why in many cases (not shown in the video) programs don't work when compiled for a different architecture? In other words, why can't Apple just re-compile all it's programs so that they work on the M1 chip?
This can get quite complex but, at least as far as I understand it, simply said this is because a lot of tools/programs contain code or instructions tailored to one architecture. This is mainly done to gain performance. By using architecture specific and optimized ways of addressing the hardware and resources you can gain speed. Most CPUs, even when in theory they are on the same architecture have this kind of optimizations. Before you can recompile such code for another architecture, you would need to replace that CPU/arch-specific code with an alternative that works on the new arch. And even if you can, there might be an impact in performance or you might hit other limitations.
When you write a program you try to do your best to optimize it. So Apple old software are written in a such way that are optimized on that old arch. That's why it need to rewrite the program to optimize it with their new M1 chip instead of old PowerPC arch to intel x64 Adoption.
Is there a way to cross-compile python script on, let's say Ubuntu, to run on raspberry Pi armv7l? I have been searching a way to do this but haven't been able to get a concrete solution.
Python scrips are generally compiled at runtime so they are platform independent. You just need to have the same libraries installed and they should work
@jensdbe isn't creating a docker image with all requirements (like libsdl2-dev etc, the common ones) preinstalled more convenient? That said, i have no experience in doing that, just used other people's docker image to create stuff for my armhf handheld. Some times it works, some other it just needs more. Not existing in xenial repositories etc (that's a xenial armhf docker image)
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strace last version doesn't give executable or any file even the compilation doesn't give any error.
Is this can by apply on RasPi 4B on Ubuntu 20.4? I can't install programs because Rasp is aarch64 and programs on Ubuntu are for amd64. Is my assumption is correct?
The easiest if off course to use tools and programs from the Ubuntu aarch64 repositories by using your regular package manager (apt). But if you need to compile something or want it static linked, then this is what you're looking for.
In the meanwhile, I got myself a better microphone, check out my latest videos and hopefully you should see an improvement. Nevertheless, donations are always welcome :)
Just started my career as an embedded dev in an automobile company. My head used to spin when I heard cross-compilation for armhf. This is exactly what I needed. Keep up the good work! You just got a new subscriber:)
One of the most concise, to the point, knowledge-packed video on YT. Thanks heaps man!
Fully agree! Exactly what I needed to understand this :)
YOU NAILED IT. Spent literally days to move from theory to practice, and you have just smashed it, just like that, making me feel like a noob. Liked and subscribed bro.
Thanks a lot for the nice feedback, makes it worth spending time on this :)
This is exactly what I needed. Building directly on the PinePhone is a pain for larger projects. I knew there had to be a better way!
Good to hear this helped you!
I had been struggling to cross-compile my application for NXP/Freescale i.mx6ul processor. Your article and video provided all the clarifications needed to actually build and copy executable on target machine and simply run it. Many thanks once again.
Great video - direct, and to the point. I stopped it multiple times and replicated the steps on my systems to insure I understood. Everything functioned exactly as shown. Thanks again.
For even my hello-world I had to pass in -static to get it to run. Great video!
Thanks!
very nice simple and easy to understand with an avarage knowledge
Well explained. I wish to see a few more videos on same topic. For example : cross compiling by connecting host machine's root directory by using sshfs and maybe even more practical example with cmake projects. Thanks for informative video .
This video really cleared all of my doubts. Nice work 👍
Job well done!! This is the best video about the topic! Thanks for sharing
Ur explanation was awesome ..............
Thanks for the excellent introduction. My case is needing aarch64 native extensions for Ruby but built on x86_64, since that's all we have for CI build hosts.
Thanks, this is a really good explanation of how cross-compiling works and what you should notice by doing so!~
Thanks, glad it was helpful!
Perfectly awesome video. Really helpful.
You just solved a question i had for years .Thank YOU !
Great to hear!
It was a really good explanation! thanks a lot!
Thanks a lot for the nice feedback, good to hear you liked the video :)
Very straightforward! thanks
Thanks for the positive feedback :)
Great explanation.
I want to do dynamic linking for my application and my libraries at host machine.
Can someone point me on how to do this? How to find all dependency of my application, group all of them together at build machine. Later at run time at host, provide proper runtime environment variable to correctly run the application.
Looking forward to responses.
Generally, works fine except for big endian. When using option '-mbig-endian' it's only possible to compile object files. When building shared libraries or ELF files, error "libstdc++.so (wrong file format)" is issued. It seems the linker tries to use the little-endian version of the .so file.
Thank you so much. You saved me
Enjoyed your training video. Have you ever tried to run a source-code security scan, like Fortify SCA for example, on a Linux Cross-Compiler-based software project?
What if I now would like to crosscompile a random other package like tensorflow?
Similar approach for that. Pre-compile any prerequisites by doing ./configure and make. Then do the same for the actual package/binary that you want to compile. As I did for tcpdump in the video.
Usually a bit of reading is required for the specifics/flags for each tool.
Thank you for the nice video.But i am unable to compile c++ code, the arm c++ compiler throws the error "fatal error: cannot execute ‘cc1plus’: execvp: No such file or directory". Any idea how can i get through?Thanks again.
Need help with sp805 watchdog timer , pls can you share steps to program its drivers?
i used this method ,while cross compilation it displays fatal error linux/init.h not found ,plz tell how to fix it
can you please make videos for android cross compilation and load the lkm from your host machine to target
Muito obrigado por ensinar como complilar para arm, eu estou tentando instalar o yay(aur) no termux e não sei se o yay funciona fora do archlinux, instalei o pacman no termux e configurei tudo certinho mas o yay precisa da linguagem go 1.19 e o termux instala o go 1.12 e não tem o binário pronto em arm, então estou tentando compilar o go 1.19 para instalar o yay no termux.
Conseguiu o que queria amigo?
Very clear! Is it possiable to do the dynamic linking?
Sure, that's the default, so if you don't pass the -static compiler flag, it should use dynamic linking
@@jensdbe Thanks for your reply. Is it possiable to install the required arm64 libraries on a amd64 Ubuntu Computer.So I can cross-compile my own library to arm64.
Love this ❤
I am not familiar with compiled languages. Could someone explain why in many cases (not shown in the video) programs don't work when compiled for a different architecture?
In other words, why can't Apple just re-compile all it's programs so that they work on the M1 chip?
This can get quite complex but, at least as far as I understand it, simply said this is because a lot of tools/programs contain code or instructions tailored to one architecture. This is mainly done to gain performance. By using architecture specific and optimized ways of addressing the hardware and resources you can gain speed. Most CPUs, even when in theory they are on the same architecture have this kind of optimizations. Before you can recompile such code for another architecture, you would need to replace that CPU/arch-specific code with an alternative that works on the new arch. And even if you can, there might be an impact in performance or you might hit other limitations.
@@jensdbe Thanks for the reply!
When you write a program you try to do your best to optimize it. So Apple old software are written in a such way that are optimized on that old arch. That's why it need to rewrite the program to optimize it with their new M1 chip instead of old PowerPC arch to intel x64 Adoption.
Is there a way to cross-compile python script on, let's say Ubuntu, to run on raspberry Pi armv7l? I have been searching a way to do this but haven't been able to get a concrete solution.
Python scrips are generally compiled at runtime so they are platform independent. You just need to have the same libraries installed and they should work
What if the project requires a ton of armhf or else libraries as dependencies?
Probably the best option is to script the whole process then instead of going through each manually.
@jensdbe isn't creating a docker image with all requirements (like libsdl2-dev etc, the common ones) preinstalled more convenient? That said, i have no experience in doing that, just used other people's docker image to create stuff for my armhf handheld. Some times it works, some other it just needs more. Not existing in xenial repositories etc (that's a xenial armhf docker image)
strace last version doesn't give executable or any file even the compilation doesn't give any error.
Fixed with --prefix=$HOME
Is this can by apply on RasPi 4B on Ubuntu 20.4? I can't install programs because Rasp is aarch64 and programs on Ubuntu are for amd64. Is my assumption is correct?
The easiest if off course to use tools and programs from the Ubuntu aarch64 repositories by using your regular package manager (apt). But if you need to compile something or want it static linked, then this is what you're looking for.
@@jensdbe Thanks for info! Channel subscribe.
thank you!
thanks man!
Thanks
Can you please make a tutorial how to cross compile a python script?
I wish I could donate a better microphone to you
In the meanwhile, I got myself a better microphone, check out my latest videos and hopefully you should see an improvement. Nevertheless, donations are always welcome :)
No, need to know how to compile a firmware image not an executable.