OpenRISC Tool chain

newlib based tool chain : binutils + gcc + newlib
- build binutils
- build gcc first stage
- build newlib
- build gcc second stage
glibc based tool chain : binutils + gcc + glibc
musl cross : binutils + gcc + musl

Using toolchain by docker

$ docker pull lswang2/build-tools
$ docker run --rm -it -v `pwd`:/work lswang2/build-tools
root@......:/work#

binutils-gdb

need tools

$ build-essential autoconf flex bison gperf libgmp-dev libmpfr-dev libmpc-dev zlib1g-dev texinfo guild-1.8

get source

$ git clone git://github.com/lswang2/binutils-gdb

prepare

$ mkdir build-binutils
$ cd build-binutils

configure

$ ../binutils-gdb/configure --target=or1k-elf --prefix=/usr/local/or1k --enable-shared \
--disable-itcl --disable-tk --disable-tcl --disable-winsup --disable-libgui --disable-rda \
--disable-sid --disable-sim --enable-gdb --with-sysroot --disable-newlib --disable-libgloss \
--disable-werror

note: on 32-bit machines –disable-werror is needed due to an enum acting as bit mask is considered signed

build

$ make
$ make install

newlib

get source

$ git clone git://github.com/openrisc/newlib

BSP modification

board에 맞추어 BSP를 적용하려면
libgloss/or1k/boards/new_bsp.S 파일을 생성하고
libgloss/or1k/Makefile.in 에서 BOARDS를 새 파일만 지정도록 수정한다

prepare

$ mkdir build-newlib
$ cd build-newlib

configure

$ ../newlib/configure --target=or1k-elf --prefix=/usr/local/or1k --enable-shared --disable-itcl \
--disable-tk --disable-tcl --disable-winsup --disable-libgui --disable-rda --disable-sid --enable-sim \
--disable-or1ksim --enable-gdb --with-sysroot --enable-newlib --enable-libgloss --disable-werror

build

$ make
$ export PATH=$PATH:/usr/local/or1k/bin
$ make install

gcc

get source

$ git clone git://github.com/openrisc/or1k-gcc

first stage

prepare

$ mkdir build-gcc
$ cd build-gcc

configure

$ ../or1k-gcc/configure --target=or1k-elf --prefix=/usr/local/or1k --enable-languages=c \
--disable-shared --disable-libssp

build

$ make
$ make install

second stage

prepare

$ mkdir build-gcc2
$ cd build-gcc2

configure

$ ../or1k-gcc/configure --target=or1k-elf --prefix=/usr/local/or1k --enable-languages=c \
--disable-shared --disable-libssp --with-newlib

build

$ make
$ make install

musl cross

Lightweight linux library.

glibc

This is for full linux porting.