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authorThierry.Vignaud <thierry.vignaud@gmail.com>2014-05-21 11:26:33 +0200
committerThierry Vignaud <thierry.vignaud@gmail.com>2014-05-24 01:47:09 +0200
commitb2c42ba3b0fa6ae68c9f2cb78fa37831e844f8af (patch)
treec4177b278fb3aeaed2281048eca803c05b510273 /mdk-stage1
parentce5d7400b8213d2995bb96c4b80665082fde8975 (diff)
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outdated, we now use glibc
Diffstat (limited to 'mdk-stage1')
-rw-r--r--mdk-stage1/doc/WHY-DIETLIBC50
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diff --git a/mdk-stage1/doc/WHY-DIETLIBC b/mdk-stage1/doc/WHY-DIETLIBC
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-(the dietlibc is a replacement for the glibc, which aim is to produce
-smaller statically linked binaries)
-
-
-The use for dietlibc in the stage1 was clear because currently used
-install process on x86 is from a 1.44 Mbytes floppy. On this floppy we
-need to fit the kernel, modules (scsi and network access), and the code to
-do the basic things to load the stage2. The only part on which we could
-progress was the code.
-
-As always, figures demonstrate evidences. Here are the size of the
-binaries used for the cdrom, disk, network and full floppy installs, using
-newt as the UI library:
-
- - with glibc
-
--rwxr-xr-x 1 gc gc 569448 May 15 15:29 stage1-cdrom
--rwxr-xr-x 1 gc gc 572264 May 15 15:29 stage1-disk
--rwxr-xr-x 1 gc gc 624712 May 15 15:30 stage1-network
--rwxr-xr-x 1 gc gc 720360 May 15 15:29 stage1-full
-
- - with dietlibc
-
--rwxr-xr-x 1 gc gc 169332 May 15 14:26 stage1-cdrom
--rwxr-xr-x 1 gc gc 172180 May 15 14:26 stage1-disk
--rwxr-xr-x 1 gc gc 198612 May 15 14:26 stage1-network
--rwxr-xr-x 1 gc gc 251764 May 15 14:26 stage1-full
-
-
-The `stage1-full' binary has code for many things, most notably: data
-decrunching (bzlib), archive extraction (in-house format), module loading
-(insmod from busybox), PCI detection, ide and scsi handling,
-cdrom/disk/loopback mounting, DHCP client negociation (redhat+grub), NFS
-mounting (util-linux), FTP and HTTP transmission (redhat), pcmcia
-initializing (pcmcia-cs), UI interaction (slang/newt); with use of the
-dietlibc, the binary is only 250 kbytes!
-
-
-Due to the modular coding, it is also possible to choose to not use
-slang/newt as the UI, but a stdio-only UI. In that case, the binaries get
-even smaller:
-
--rwxr-xr-x 1 gc gc 104500 May 15 15:46 stage1-cdrom*
--rwxr-xr-x 1 gc gc 107348 May 15 15:46 stage1-disk*
--rwxr-xr-x 1 gc gc 133972 May 15 15:47 stage1-network*
--rwxr-xr-x 1 gc gc 187348 May 15 15:46 stage1-full*
-
-
-
-gc [Tue May 15 15:58:34 2001] \ No newline at end of file