Apache #NuttX RTOS fails to build our #ZigLang App ... But no worries! Let's compile it ourselves

https://github.com/lupyuen/zig-bl602-nuttx#build-fails-on-nuttx

Here's how we compile our #ZigLang App for #RISCV #BL602

https://github.com/lupyuen/zig-bl602-nuttx#compile-zig-app

#ZigLang Target CPU for #RISCV #BL602 is "sifive_e76" ... Because it matches RV32IMACF

https://github.com/lupyuen/zig-bl602-nuttx#zig-target

Apache #NuttX RTOS fails to link with our #ZigLang Compiled App ... Let's find out why we "can't link soft-float modules with single-float modules"

https://github.com/lupyuen/zig-bl602-nuttx#floating-point-abi

Apache #NuttX RTOS was compiled for #BL602 with Hardware Floating-Point ABI: "gcc -march=rv32imafc -mabi=ilp32f"

https://github.com/lupyuen/zig-bl602-nuttx#floating-point-abi

But #ZigLang Compiler produces an Object File with Software Floating-Point ABI ... This won't link with #BL602 #NuttX on Hardware Floating-Point!

https://github.com/lupyuen/zig-bl602-nuttx#floating-point-abi

We do ELF Header Surgery on the #ZigLang Output for #BL602 ... And change "Software Floating-Point ABI" to "Hardware Floating-Point ABI"

https://github.com/lupyuen/zig-bl602-nuttx#patch-elf-header

After patching the Floating-Point ABI, our #ZigLang App runs on #BL602 with Apache #NuttX RTOS! 🎉

https://github.com/lupyuen/zig-bl602-nuttx#zig-runs-ok

Running #ZigLang on #RISCV #BL602 with Apache #NuttX RTOS ... All shall be explained in this article

https://lupyuen.github.io/articles/zig?1

Apache #NuttX RTOS comes with a simple #ZigLang App ... Let's run this on #BL602

https://lupyuen.github.io/articles/zig?2#zig-app

Here's how we import C functions into #ZigLang

https://lupyuen.github.io/articles/zig?3#import-standard-library

How we call printf() from #ZigLang

https://lupyuen.github.io/articles/zig?4#main-function

We enable the #ZigLang App on Apache #NuttX RTOS with menuconfig

https://lupyuen.github.io/articles/zig?5#enable-zig-app

Apache #NuttX Build fails with our #ZigLang App ... But no worries! Let's compile it ourselves

https://lupyuen.github.io/articles/zig?6#build-fails-on-nuttx

Here's how we compile our #ZigLang App for #RISCV #BL602

https://lupyuen.github.io/articles/zig?7#compile-zig-app

#ZigLang Targets for #RISCV

https://lupyuen.github.io/articles/zig?8#zig-target

#ZigLang fails to link with Apache #NuttX RTOS for #BL602 ... Here's why

https://lupyuen.github.io/articles/zig?9#floating-point-abi

ELF Header Surgery for #ZigLang ... So that it links with Apache #NuttX RTOS for #BL602

https://lupyuen.github.io/articles/zig?10#patch-elf-header

@lupyuen peepz at work creepin on rust for embedded secure element. Should i tell em to fuck off and use zig?

@kuken @lupyuen Move zig!