kosmas12 / kos Goto Github PK

Use the normal cc/gcc/clang with the -m32 to compile into 32bit binaries, or -march=native to compile to system's native architecture, instead of finding a specific compiler binary/link. This will support the kernel being built on all systems instead of just yours.

More issues will be fixed with this too, and compiling will be a lot simpler.

Note for cc: /usr/bin/cc is generally a link to a system's main compiler — GCC, Clang, or any other — the user can choose. This is used as s smarter way to compile how you and a user wants.

Full output:

mkdir -p /home/abdul/kOS-test/kOS/sysroot/usr/include
cp -R --preserve=timestamps include/. /home/abdul/kOS-test/kOS/sysroot/usr/include/.
mkdir -p /home/abdul/kOS-test/kOS/sysroot/usr/include
cp -R --preserve=timestamps include/. /home/abdul/kOS-test/kOS/sysroot/usr/include/.
mkdir -p /home/abdul/kOS-test/kOS/sysroot/usr/include
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c stdio/printf.c -o stdio/printf.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
cp -R --preserve=timestamps include/. /home/abdul/kOS-test/kOS/sysroot/usr/include/.
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c stdio/putchar.c -o stdio/putchar.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c stdio/puts.c -o stdio/puts.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c stdlib/abort.c -o stdlib/abort.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c string/memcmp.c -o string/memcmp.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c string/memcpy.c -o string/memcpy.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c string/memmove.c -o string/memmove.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c string/memset.c -o string/memset.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c string/strlen.c -o string/strlen.libk.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_libc -Iinclude -D__is_libk
ar rcs libk.a stdio/printf.libk.o stdio/putchar.libk.o stdio/puts.libk.o stdlib/abort.libk.o string/memcmp.libk.o string/memcpy.libk.o string/memmove.libk.o string/memset.libk.o string/strlen.libk.o
mkdir -p /home/abdul/kOS-test/kOS/sysroot/usr/lib
cp libk.a /home/abdul/kOS-test/kOS/sysroot/usr/lib
mkdir -p /home/abdul/kOS-test/kOS/sysroot/usr/include
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c arch/i386/crti.S -o arch/i386/crti.o -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c arch/i386/bootloader.S -o arch/i386/bootloader.o -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c -Wall -Wextra -pedantic arch/i386/terminalio.c -o arch/i386/terminalio.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
cp -R --preserve=timestamps include/. /home/abdul/kOS-test/kOS/sysroot/usr/include/.
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c -Wall -Wextra -pedantic kernel/kernel.c -o kernel/kernel.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c -Wall -Wextra -pedantic kernel/gdt/gdt.c -o kernel/gdt/gdt.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c kernel/gdt/gdtflush.S -o kernel/gdt/gdtflush.o -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c -Wall -Wextra -pedantic irq/idt.c -o irq/idt.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c irq/loadidt.S -o irq/loadidt.o -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c irq/readwriteport.S -o irq/readwriteport.o -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c keyboard/kbhandler.S -o keyboard/kbhandler.o -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c -Wall -Wextra -pedantic keyboard/keyboard.c -o keyboard/keyboard.o -std=gnu11 -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -MD -c arch/i386/crtn.S -o arch/i386/crtn.o -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra -D__is_kernel -Iinclude
clang --sysroot=/home/abdul/kOS-test/kOS/sysroot -isystem=/usr/include -Wl,-Tarch/i386/linker.ld -o kOS.bin -O2 -g -m32 -target i386-none-elf -nostdlib -Wall -Wextra -pedantic -ffreestanding -Wall -Wextra arch/i386/crti.o arch/i386/bootloader.o arch/i386/terminalio.o kernel/kernel.o kernel/gdt/gdt.o kernel/gdt/gdtflush.o irq/idt.o irq/loadidt.o irq/readwriteport.o keyboard/kbhandler.o keyboard/keyboard.o -nostdlib -lk arch/i386/crtn.o
/usr/bin/ld: cannot find -lk
collect2: error: ld returned 1 exit status
clang: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:60: kOS.bin] Error 1

Trying to press any button after booting with GRUB makes the computer reboot, like it crashes in some way. This happens because the GDT that GRUB sets up is incompatible. It works if you can use the kernel with QEMU by using the -kernel parameter, like so:

qemu-system-i386 -kernel path/to/kOS/binary

However, this is only a temporary workaround and not a solution, as QEMU's set-up GDT table just happens to be compatible. Instead, kOS should handle GDT initialization on its own.