ILiad/Dev

From OSR

Installing sshd

Before doing any development, install the unbrickable startup scripts to startup sshd before anything else. Otherwise it might not be possible to restore the reader without a complete reflash from CF if you mess up the X server or any of the other startup scripts.

Building with autoconf

Install the Open Embedded cross compile toolchain (unpack it in / as root and it will create /usr/local/arm with all of the libraries and headers).

Cross compile FLTK for the arm (the build and install of fluid will break):

   CC=/usr/local/arm/oe/bin/arm-linux-gcc \
   CXX=/usr/local/arm/oe/bin/arm-linux-g++ \
  ./configure \
          --host arm-linux-elf \
          --prefix /usr/local/arm/oe/arm-linux \
          --enable-threads

   make
   sudo make install

Download something like GTK Hello-world
Configure it and build

   CC=/usr/local/arm/oe/bin/arm-linux-gcc \
   LDFLAGS=-lerdm \
      ./configure --host arm-linux-gcc
   make

Copy it to the reader (no scp for some reason):

   tar -zcf - ./hello | ssh root@ereader tar -zxvf -

Log into the reader and run it:

   ssh root@ereader DISPLAY=:0 ./hello

Interfacing with the e-ink display manager (erdm):

configure was told to link in the liberdm library already.
Add to the program headers:

   #include <liberdm/erdm.h>

Add this right before gtk_main() or Fl::run() or what ever mainloop your GUI toolkit uses so that the entire screen will be blanked and redrawn with your widget set:

   // Full Refresh, chase off all the ghosts
   dmDisplay(dmCmdPriorUrgent, dmQFull);

You may need to add something to a periodic timer to update the display incrementally:

   dmDisplay(dmCmdPriorUrgent, dmQTyping);

Using a USB keyboard

I wrote details for installing USB HID drivers and a Xtest redirector. The keyboard works for apps like rxvt and dillo with a US keymap.

Using the iLiad as a tablet

It is possible to use the iLiad's Wacom tablet as a wireless graphics tablet. Details on Mobileread. There is much that could be done to make this more user friendly; perhaps a multicast connection rather than TCP and something that handles startup/shutdown on the iLiad side.

Building krb5-1.5.2

Kerberos support is required for OpenSSL, even if we don't use it. The system doesn't like to cross compile.

   CC=/usr/local/arm/oe/bin/arm-linux-gcc \
   CXX=/usr/local/arm/oe/bin/arm-linux-g++ \
   ./configure \
       --host=arm-linux-elf \
       --prefix=/usr/local/arm/oe \
       --enable-static \

To get around this, create config.cache with this contents:

   krb5_cv_attr_constructor_destructor=${ac_cv_c_const=yes}

But, this fails anyway since "static libraries are not supported in this release", but "this architecture does not support shared libs". To fix this modify config/shlib.conf to define SHLIBEXT=.so instead of .so-nobuild.

I couldn't figure out how to get appl/bsd/configure to recognize the cache for /etc/TIMEZONE and /etc/environment, so I hard coded that part of the script.

Building openssl-0.9.8e

There is no standard autoconf script and the arm-linux-gcc target is gone, so you have to modify the linux-generic32 target:

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