build fails on raspberry pi - release 0.8.1 with error "fatal error: asm/ldt.h: No such file or directory"

[l00nix]

Description
I am following the build instructions in the How to Build instructions. When running the build command or 'make all' the build fails with

make[1]: Leaving directory '/home/arau/elks_compile/elks/image' make -C elksemu PREFIX='/home/arau/elks_compile/elks/cross' elksemu make[1]: Entering directory '/home/arau/elks_compile/elks/elksemu' cc -O -DUSE_PTRACE=1 -c -o elks.o elks.c elks.c:30:10: fatal error: asm/ldt.h: No such file or directory 30 | #include <asm/ldt.h> | ^~~~~~~~~~~ compilation terminated. make[1]: *** [<builtin>: elks.o] Error 1 make[1]: Leaving directory '/home/arau/elks_compile/elks/elksemu' make: *** [Makefile:18: all] Error 2

• What is expected ?
  Expected behaviour is for the build to complete and create a fd1440 minix image.
• What is observed ?
  build fails with error message

cc -O -DUSE_PTRACE=1 -c -o elks.o elks.c elks.c:30:10: fatal error: asm/ldt.h: No such file or directory 30 | #include <asm/ldt.h> | ^~~~~~~~~~~ compilation terminated. make[1]: *** [<builtin>: elks.o] Error 1 make[1]: Leaving directory '/home/arau/elks_compile/elks/elksemu' make: *** [Makefile:18: all] Error 2

Configuration

• Version (commit or release):
  0.8.1
• Emulator or HW platform:
  Raspberry pi - Debian GNU/Linux 12

How to reproduce ?

• Does the problem always happen ?
  yes
• List the steps to reproduce the problem.

1. git clone https://github.com/ghaerr/elks.git
2. cd elks
3. ./build.sh

Raw data

• Screenshot(s):

Tried googeling to no avail.

Thanks

Alex

[ghaerr]

Hello @l00nix,

Everything is fine, the build is failing at the very last step, in an optional x86-only component elksemu, which is not required to build the ELKS kernel, applications, or images. Elksemu is an emulator for ELKS binaries which by design only compiles and runs on Linux x86 systems. The reason for the build failure is that the header file asm/ldt.h is not present, which isn't implemented in the CPU for ARM-based systems like Pi. The elksemu build was placed at the last step just for this reason.

You can now run ELKS using the floppy image fd1440.img in the image/ directory using the provided qemu.sh QEMU emulator script, if desired.

Thank you!

[l00nix]

Hello @l00nix,

Everything is fine, the build is failing at the very last step, in an optional x86-only component elksemu, which is not required to build the ELKS kernel, applications, or images. Elksemu is an emulator for ELKS binaries which by design only compiles and runs on Linux x86 systems. The reason for the build failure is that the header file asm/ldt.h is not present, which isn't implemented in the CPU for ARM-based systems like Pi. The elksemu build was placed at the last step just for this reason.

You can now run ELKS using the floppy image fd1440.img in the image/ directory using the provided qemu.sh QEMU emulator script, if desired.

Thank you!

Thank you @ghaerr - the clarification is much appreciated