Installing the toolchain

Install autoconf 2.64

sudo apt-get install m4
wget http://ftp.gnu.org/gnu/autoconf/autoconf-2.64.tar.xz
tar xf autoconf-2.64.tar.xz
cd autoconf-2.64/
./configure
make
sudo make install

Install automake 1.11.1

wget http://ftp.gnu.org/gnu/automake/automake-1.11.1.tar.bz2
tar xf automake-1.11.1.tar.bz2
cd automake-1.11.1/
./configure
make
sudo make install

Install libtool

sudo apt-get install libtool-bin

Install texinfo

sudo apt-get install texinfo

Download GNU libraries

cd toolchain
./download_libs.sh

Step 2: Build Binutils

sudo mkdir -p $OSTROOT/usr/include
sudo cp -rT newlib-2.2.0-1/newlib/libc/include $OSTROOT/usr/include

Go to hosted_compiler directory and run

prepare_build_binutils.sh

and then run make according to instructions in prepare_build_binutils.sh

prepare_build_gcc.sh

Build Newlib 2

Create link to i686-ost-cc

cd $OSTCC/bin
sudo ln -s i686-ost-gcc i686-ost-cc

Build newlib

./configure-ost-newlib.sh
./build-ost-newlib.sh $OSTCC/bin

Build libk

cd libk
make

Build kernel

cd kernel
make

Build test application

cd test-application
./build-test-application.sh

Libstdc++

Taken from http://www.linuxfromscratch.org/lfs/view/development/chapter05/gcc-libstdc++.html

cd toolchain/hosted_compiler/external/build-gcc
../gcc-4.9.2/libstdc++-v3/configure --enable-option-checking --target=i686-ost --prefix=$OSTCC --with-sysroot=$OSTROOT --enable-languages=c,c++ --disable-werror --disable-multilib --disable-nls  --disable-libstdcxx-threads --disable-libstdcxx-pch
make
sudo make install

Remove these lines from /usr/local/ost/include/c++/4.9.2/bits/os_defines.h

#if __GLIBC_PREREQ(2,15) && defined(_GNU_SOURCE)
# undef _GLIBCXX_HAVE_GETS
#endif

Make a bootable cdrom .iso

Install prerequisites

sudo apt-get install xorriso

Build the iso

make myiso.iso

Run

qemu-system-i386 -kernel build-ia32/myos.bin

or for .iso files

qemu-system-i386 -cdrom build-ia32/myos.iso

Notes

The following integer symbols are defined in the Eclipse project. They are used by stdint-gcc.h

INT8_TYPE signed char UINT8_TYPE unsigned char INT16_TYPE short UINT16_TYPE unsigned short INT32_TYPE long UINT32_TYPE unsigned long INT64_TYPE long long INT64_TYPE unsigned long long

foolo/ost