build

set -e

export PATH=/usr/local/cross/bin:usr/local/cross/i586-elf-bin:$PATH

echo Build started.
date

[[ -z "$DEBUG" ]] && DEBUG=false
[[ -z "$VESA" ]] && VESA=true
[[ -z "$TARGET" ]] && TARGET=i686-myos
[[ -z "$DISKTYPE" ]] && DISKTYPE=FAT32
[[ -z "$DISKSIZE" ]] && DISKSIZE=33
export DEFINES="-D$DISKTYPE"
export CFLAGS="-c -g"
export NASMFLAGS="-felf -F dwarf -g"

if [ "$DEBUG" = true ] ; then
  DEFINES="$DEFINES -DDEBUG"
else
  CFLAGS="$CFLAGS -O2"
  NASMFLAGS="$NASMFLAGS -O2"
fi

[[ "$VESA" = true ]] && DEFINES="$DEFINES -DVESA"

CFLAGS="$CFLAGS $DEFINES"
CPPFLAGS="$CFLAGS"

echo "DEBUG      =  $DEBUG"
echo "VESA       =  $VESA"
echo "DEFINES    = \"$DEFINES\""
echo "CFLAGS     = \"$CFLAGS\""
echo "CPPFLAGS   = \"$CPPFLAGS\""
echo "NASMFLAGS  = \"$NASMFLAGS\""

if [ ! -d bin ] ; then mkdir bin; fi
if [ -e myos.sym ] ; then rm myos.sym; fi

cd bootsect
echo compiling boot sector...
if [ ! -d obj ] ; then mkdir obj; fi
nasm bootsect.asm $DEFINES $NASMFLAGS -o./obj/bootsect
$TARGET-ld -Ttext=0x7C00 --oformat=binary ./obj/bootsect -o../bin/bootsect
$TARGET-objcopy --change-section-address .text=0x7C00 ./obj/bootsect
$TARGET-nm -n ./obj/bootsect>>../myos.sym

cd ../osldr
echo building osldr...
if [ ! -d obj ] ; then mkdir obj; fi
nasm init.asm $DEFINES $NASMFLAGS -o./obj/init.o
nasm isr.asm $DEFINES $NASMFLAGS -o./obj/isr.o
$TARGET-gcc $CFLAGS video.c -o ./obj/video.o
$TARGET-gcc $CFLAGS disk.c -o ./obj/disk.o
$TARGET-gcc $CFLAGS fat.c -o ./obj/fat.o
$TARGET-gcc $CFLAGS elf.c -o ./obj/elf.o
$TARGET-gcc $CFLAGS osldr.c -o ./obj/osldr.o
$TARGET-ld -Tosldr.ld
$TARGET-objcopy --strip-debug ./obj/osldr ./obj/osldr-nodbg
$TARGET-objcopy ./obj/osldr-nodbg ../bin/osldr -O binary
$TARGET-nm -n ./obj/osldr>>../myos.sym

cd ../kernel
echo building kernel...
if [ ! -d obj ] ; then mkdir obj; fi
ln $($TARGET-gcc $CFLAGS -print-file-name=crtbegin.o) ./obj/crtbegin.o 2> /dev/null || true
ln $($TARGET-gcc $CFLAGS -print-file-name=crtend.o) ./obj/crtend.o 2> /dev/null || true
ln $($TARGET-gcc $CFLAGS -print-file-name=libgcc.a) ./obj/libgcc.a 2> /dev/null || true
ln $($TARGET-gcc $CFLAGS -print-file-name=libsupc++.a) ./obj/libsupc++.a 2> /dev/null || true
nasm startup.S $DEFINES $NASMFLAGS -o./obj/startup.o
nasm isr.asm $DEFINES $NASMFLAGS -o./obj/isr.o
$TARGET-as crti.s -o ./obj/crti.o
$TARGET-as crtn.s -o ./obj/crtn.o
$TARGET-gcc $CPPFLAGS VESA.cc -o ./obj/VESA.o
$TARGET-gcc $CPPFLAGS buffer.cc -o ./obj/buffer.o
$TARGET-gcc $CFLAGS clock.c -o ./obj/clock.o
$TARGET-gcc $CPPFLAGS disk.cc -o ./obj/disk.o
$TARGET-gcc $CPPFLAGS drawing.cc -o ./obj/drawing.o
$TARGET-gcc $CPPFLAGS elf.cc -o ./obj/elf.o
$TARGET-gcc $CFLAGS exceptions.c -o ./obj/exceptions.o
$TARGET-gcc $CPPFLAGS fat.cc -o ./obj/fat.o
$TARGET-gcc $CPPFLAGS fpu.cc -o ./obj/fpu.o
$TARGET-gcc $CPPFLAGS fs.cc -o ./obj/fs.o
$TARGET-gcc $CFLAGS interrupt.c -o ./obj/interrupt.o
$TARGET-gcc $CPPFLAGS kcpp.cc -o ./obj/kcpp.o
$TARGET-gcc $CPPFLAGS kernel.cc -o ./obj/kernel.o
$TARGET-gcc $CPPFLAGS keyboard.cc -o ./obj/keyboard.o
$TARGET-gcc $CPPFLAGS memory.cc -o ./obj/memory.o
$TARGET-gcc $CPPFLAGS mouse.cc -o ./obj/mouse.o
$TARGET-gcc $CFLAGS process.c -o ./obj/process.o
$TARGET-gcc $CFLAGS string.c -o ./obj/string.o
$TARGET-gcc $CPPFLAGS syscall.cc -o ./obj/syscall.o
$TARGET-gcc $CFLAGS task.c -o ./obj/task.o
$TARGET-gcc $CPPFLAGS timer.cc -o ./obj/timer.o
$TARGET-gcc $CPPFLAGS video.cc -o ./obj/video.o
$TARGET-ld -shared -Tkernel.ld
$TARGET-ld -shared -Tkernel.ld -o ./obj/kernel -Ttext=0xC0000000
$TARGET-nm -n -D ./obj/kernel>>../myos.sym
$TARGET-objdump ./obj/kernel -t | grep \*UND\*
$TARGET-strip ../bin/kernel

cd ../vesadrvr
echo building vesadrvr.o...
if [ ! -d obj ] ; then mkdir obj; fi
nasm $DEFINES $NASMFLAGS vesadrvr.asm -o./obj/vesa_asm.o
$TARGET-gcc $CFLAGS vesadrvr.c -o ./obj/vesa_c.o
$TARGET-ld -i ./obj/vesa_c.o ./obj/vesa_asm.o -o ../bin/vesadrvr.o

cd ../shell
echo building shell...
if [ ! -d obj ] ; then mkdir obj; fi
nasm $DEFINES $NASMFLAGS crt0.S -o./obj/crt0.o
$TARGET-gcc $CFLAGS shell.c -o ./obj/shell.o
$TARGET-ld ./obj/crt0.o ./obj/shell.o -o../bin/shell
$TARGET-nm -n ../bin/shell>>../myos.sym

cd ../
echo copying files...
cp ./splash.bmp ./bin/splash
cp ./kernel/cursor.bmp ./bin/cursor
cp ./kernel/font.bmp ./bin/font

echo Build Completed.