I wrote a little script to try to calculate any missing dependencies, add up the download and installation sizes and compare with Debian. These are the results (with a few comments):
Need to run 'emsource gcc-4.1'
(edos-debcheck has identified all missing dependencies at all levels of
the installation and determined that only this source package needs to
be built. From this package, we only need libgcc1 and libstdc++6.
gcc-4.1-base is actually an empty package of just documentation so we
can drop that entirely.
Emdebian target packages (arm):
busybox Download: 301kb Installed: 568kb
base-files Download: 19kb Installed: 312kb
cdebconf Download: 56kb Installed: 228kb
dpkg Download: 257kb Installed: 728kb
apt Download: 598kb Installed: 1616kb
libc6 Download: 3997kb Installed: 10108kb
base-passwd Download: 10kb Installed: 56kb
initscripts Download: 29kb Installed: 304kb
login Download: 47kb Installed: 192kb
module-init-tools
Download: 44kb Installed: 180kb
passwd Download: 267kb Installed: 940kb
sysvinit Download: 45kb Installed: 232kb
sysv-rc Download: 7kb Installed: 100kb
libpopt0 Download: 14kb Installed: 52kb
Debian versions.
busybox Download: 308kb Installed: 553kb
base-files Download: 39kb Installed: 372kb
cdebconf Download: 135kb Installed: 404kb
dpkg Download: 1991kb Installed: 6284kb
apt Download: 1450kb Installed: 4416kb
libstdc++6 Download: 288kb Installed: 946kb
libc6 Download: 4525kb Installed: 10596kb
base-passwd Download: 35kb Installed: 144kb
initscripts Download: 57kb Installed: 380kb
login Download: 777kb Installed: 2928kb
module-init-tools
Download: 79kb Installed: 300kb
passwd Download: 757kb Installed: 2404kb
sysvinit Download: 103kb Installed: 272kb
sysv-rc Download: 54kb Installed: 264kb
libgcc1 Download: 16kb Installed: 42kb
libpopt0 Download: 31kb Installed: 152kb
gcc-4.1-base Download: 193kb Installed: 224kb
The missing packages, if taken straight from Debian would add:
Missing Install=1232kb
Missing download=484kb
Using Debian versions (without accounting for any extra dependencies
that the Debian packages would require):
Debian Install total=30Mb
Debian Download total=10Mb
Our versions (with libgcc1 and libstdc++6 to make an installable set):
Emdebian Install total=15Mb
Emdebian Download total=5Mb
(the majority of that is libc6)
To be able to install the packages from Debian, this set is necessary:
busybox base-files cdebconf dpkg apt libstdc++6 libc6 base-passwd
initscripts login module-init-tools passwd sysvinit sysv-rc libgcc1
libpopt0 libgcc1 gcc-4.1-base mount libselinux1 awk lsb-base
libpam-modules libpam0g coreutils debian-archive-keyring libatk1.0-0
libcap1 gnupg libldap2 libdb4.3 libusb-0.1-4 libgnutls13 gpgv
libgcrypt11 makedev libgpg-error0 liblzo1
Those would bump the set up to:
Debian Install total=47Mb
Debian Download total=17Mb
vs
Emdebian Install total=15Mb
Emdebian Download total=5Mb
So, overall, almost a 33% reduction.
My iPAQ has 64Mb so there should still be plenty of room for a kernel
and GPE.
:-)
(Familiar 0.84 leaves about 7Mb free after a full install.)
The emdebian set does not contain a replacement for
debian-archive-keyring because gnupg brings in so many dependencies
(and doesn't yet build in Emdebian). This means we lose secure-apt at
the rootfs stage but that can always be added later for devices that
can support it. (Familiar does not.)
Using a "normal" Debian minimal bootstrap system would add perl by
replacing cdebconf with debconf, bumping the minimum size even higher
(closer to 100Mb).
Any help on getting gcc-4.1 to cross-compile would be appreciated - I'm
looking to create a package with specs:
build=amd64|i386|powerpc ; host=arm ; target=arm.
http://lists.debian.org/debian-embedded/2007/05/msg00002.html
--
Neil Williams
=============
http://www.data-freedom.org/
http://www.nosoftwarepatents.com/
http://www.linux.codehelp.co.uk/
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