Building Flutter Engine for Custom OS and custom tool chains.

[Vijay Ch]

Hello,
I want to build flutter for Custom OS where it has it own gcc based build tool chain.
But when i try to compile it on my Linux it is able to generate the ninja files using gn build.
And it fails during ninja build saying clang/clang++ not found.
Since my custom tool chain doesn't support clang, i tried disabling the option --no-clang, but it didn't work.


I also want to understand the below build options given for gn.

--target-toolchain = Path to my tool chain
--target-triple = the compiler name some thing like "arm-linux-gnueabihf "
--toolchain-prefix = what should be the prefix here?

Can any one from the group give the answers?

Thanks in advance
Vijay

[Vijay Ch]

I can see the below changes in gn script

gn_args['is_clang'] = not sys.platform.startswith(('cygwin', 'win'))

does it mean that clang is mandatory in the tool chain to build flutter?

[Eric Seidel]

+Chinmay Garde likely has the answers, but may not be back in the office yet.

https://medium.com/flutter-io/flutter-on-raspberry-pi-mostly-from-scratch-2824c5e7dcb1
is also his guide of walking through building for another platform.

Hope that helps.

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