This is just a simple project that I'm working on, nothing big, might add more.
To make it cleaner, add a directory named bin.
Set the addargs variable, so if you want to add more arguments, you don't have to edit the actual building command.
On a normal shell (sh, bash, etc.): addargs="args go here"
On fish: set addargs "args go here"
Change the directory to bin
Compile the main assembly file: nasm -f elf32 ../kernel.asm -o kasm.o
Compile the kernel: gcc -m32 -c ../kernel.c -o kc.o -lm: Linux, ?: Windows
Link the assembly and compiled kernel: ld -m elf_i386 -T ../link.ld -o kernel kasm.o kc.o -L/usr/lib32 -lc $addargs
Remove kasm.o and kc.o, they are not needed now.
Test with QEMU: qemu-system-i386 -kernel kernel
After testing, go back to the main directory: cd ..