User:VladVukicevic/Maemo 2007q3

Environment Setup

• Ubuntu 7.04 as host; should work fine with others, but I'm using preexisting debs here.

• install scratchbox from http://scratchbox.org/ -- you want the cs2007q3-arm6 toolchain.
  • deb http://scratchbox.org/debian apophis main

• grab the maemo rootstrap tgz from http://repository.maemo.org/stable/chinook/armel/

• use sb-menu to configure a new target
  • select the 2007q3 compiler
  • select cputransp, debian-etch, maemo-tools, and perl devkits
  • select qemu-0.8.2-sb2 as cpu transparency method (qemu-cvs has problems)
  • install the rootstrap you selected
  • install the C library, /etc, and fakeroot
  • select the new target

• ensure the base stuff works; create foo.c: '#include <stdio.h>\n int main(int argc, char **argv) { printf("hello world\n"); }'; gcc -o foo foo.c; ./foo

• install packages inside scratchbox
  • ensure that 'deb http://repository.maemo.org/ chinook free non-free' and 'deb-src http://repository.maemo.org/ chinook free' are in /etc/apt/sources.list
  • there's a whole bunch of dev packages you need to pull in:
    • apt-get install libgtk2.0-dev libxaw7-dev libfreetype6-dev libxi-dev
    • (might be some more missing, install as necessary)

• the old compiler generates binaries without the executable stack bit flag present to indicate whether an executable stack is needed; this is assumed to mean that it is needed. You'll need to fix all the installed libraries, otherwise you'll get errors such as:
  • foo: error while loading shared libraries: libfreetype.so.6: cannot enable executable stack as shared object requires: Invalid argument
  • Grab execstack.armel from http://people.mozilla.com/~vladimir/misc/execstack.armel (comes from the prelink package, but you have to rebuild a few things to build it)
  • fix up the libs in /lib and /usr/lib:
    • cd /lib ; execstack -c `find . -name \*.so.\* -type f`
    • cd /usr/lib ; execstack -c `find . -name \*.so.\* -type f`

• You should be good to go; you'll need to manually build libIDL (packages to be provided soon)

Mozilla Quirks

• -rpath-link processing changed in gcc 4.2; you may need to add :/usr/lib:/lib to the -rpath-link args in configure.in (MOZ_EXTRA_LINK_FLAGS, iirc)
• -fshort-wchar must not be specified, even though configure.in specifies it if it's available. The maemo libs seem to be built with sizeof(wchar_t) == 4. See bug 423913. Hack it out of configure.in -- or change the compile check to an AC_TRY_LINK (see bug).
• -Werror is enabled in a few places, notably in netwerk/cookies -- but with gcc 4.2, we get a lot of warnings about "cast increases required alignment of target type", especially in nsVoidArray.h (cast from char* to nsVoidArray::Impl*). Those need to be fixed, but in the meantime, get rid of the -Werror flag in configure.in build with "make -s WARNINGS_AS_ERRORS="
• You'll need the workaround to avoid a NSS crash in bug 408071
• You'll need the patch to avoid miscompilation or failure to compile xpc stubs from bug 426563

Qt Stuff

Qt Build

• [Qt/Embedded for linux]
• ./configure -prefix /usr/local/qte -no-webkit -no-svg -plugin-mouse-tslib -embedded arm -nomake examples -nomake demos -nomake docs
  • If you don't disable examples/demos, you'll have some build failures on examples due to not including svg; comment them out of the .pro files, or just skip the -no-svg
• Install, then copy over relevant stuff to device (e.g. skip debug files, docs, translations, etc.)
• Don't forget to set PKG_CONFIG_PATH=/usr/local/qte/lib/pkgconfig:/usr/lib/pkgconfig, PATH=/usr/local/qte/bin:$PATH, and LD_LIBRARY_PATH=/usr/local/qte/lib:$LD_LIBRARY_PATH when building stuff to use this install of Qt

On Device

• Assuming Qt/E is in /usr/local/qte...
• env vars:
  • PATH=/usr/local/qte/bin:$PATH
  • LD_LIBRARY_PATH=/usr/local/qte/lib:$LD_LIBRARY_PATH
  • QWS_MOUSE_PROTO=Tslib
  • TSLIB_TSDEVICE=/dev/input/event3
• You'll need an updated and/or rebuilt tslib, otherwise you'll get errors about ts_config failing and you won't be able to use the mouse -- see patch at https://lists.berlios.de/pipermail/tslib-general/2007-February/000002.html
• You'll want to build something like [[1]] ([build]) for turning off manual updates for omapfb. Run "./omap-fb auto".
• X runs on VT 2; change to VT 3 first:
  • chvt 3
• Fire up some app to run as a window server:
  • pixeltool -qws
• When the windowserver app exists, switch back to the X VT:
  • chvt 2