What do we need:
 * QEMU ARM Emulator (download binaries from http://www.qemu.org)
 * GNU ARM toolchain (download binaries from http://www.gnuarm.com/)
 * Linux kernel source (download from http://www.kernel.org)
 * textinfo

== Setting up Development Environment ==

=== QEMU ARM Emulator Installation ===

TBD.

=== Colinux Installation ===

=== Download, Install, Run ===

==== Create a Disk for ARM Development ====

 1. Create 3GB blank file with Cygwin:
 {{{
  # under cygwin!
  $ cd /cygdrive/path/to/colinux
  $ dd if=/dev/zero of=disk_armdev bs=1k count=3000000
 }}}
 (note: the above count is ''three million'').
 1. Stop Colinux:
 {{{
  # from colinux:
  $ shutdown -h now
 }}}
 1. Edit your configuration:
 {{{
  cobd3=f:\colinux\disk_armdev
 }}}
 1. Restart colinux:
 {{{
  net start colinux
 }}}
 1. Format and mount the new disk:
 {{{
  # In colinux:
  $ mkfs -t ext3 /dev/cobd3
  $ mkdir /arm
  $ mount /dev/cobd3 /arm
 }}}

=== Directory Structure ===

{{{
 /arm/download
 /arm/srcs
 /arm/objs
}}}

== Tools ==

=== Download Latest binutils, GCC, and newlib ===

binutils:
  http://ftp.gnu.org/gnu/binutils/

GCC:
  http://ftp.gnu.org/gnu/gcc/

newlib:
  ftp://sources.redhat.com/pub/newlib/index.html

{{{
  $ mkdir -p /arm/download
  $ cd /arm/download
  $ wget -c http://ftp.gnu.org/gnu/binutils/binutils-2.18.tar.bz2
  $ wget -c http://ftp.gnu.org/gnu/gcc/gcc-3.4.6/gcc-3.4.6.tar.bz2
  $ wget -c ftp://sources.redhat.com/pub/newlib/newlib-1.16.0.tar.gz
}}}

=== Preparing to build ===

==== Unpack archives ====

{{{
  $ mkdir -p /arm/srcs
  $ cd /arm/srcs
  $ tar xjf ../download/binutils-2.18.tar.bz2
  $ tar xjf ../download/gcc-3.4.6.tar.bz2
  $ tar xzf ../download/newlib-1.16.0.tar.gz
}}}


==== Prepare newlib to be built along with gcc ====

{{{
  $ cd gcc-3.4.6
  $ ln -s ../newlib-1.16.0/newlib .
  $ cd ..
}}}

 
=== Build Everything ===

==== Build binutils ====

{{{
  $ mkdir -p /arm/objs/binutils-arm
  $ cd /arm/objs/binutils-arm
  $ ../../srcs/binutils-2.18/configure --target=arm-elf --prefix=/arm
  $ make
  $ cd ..
}}}

==== Update binutils Path ====

Before we build gcc below, we need to first add the path to (thew newly installed) binutils:

{{{
  $ export PATH=/arm/bin:$PATH
}}}


==== Build gcc ====

{{{
  $ mkdir /arm/objs/gcc-arm
  $ cd /arm/objs/gcc-arm
  $ ./../srcs/gcc-3.4.6/configure --target=arm-elf --prefix=/arm --enable-threads \
                                  --with-cpu=arm9 --enable-languages=c --disable-nls \
                                  --with-newlib
  $ make
  $ make install
}}}


== PJSIP ==

=== Build ===

{{{
  $ cd /your/pjproject/directory
  $ make distclean
  $ ./aconfigure --host=arm-elf --disable-floating-point --disable-sound
  $ cat << EOF > user.mak
     export CFLAGS += -msoft-float
     EOF
  $ make dep
  $ make



}}}