50 lines
2.1 KiB
Plaintext
50 lines
2.1 KiB
Plaintext
(the dietlibc is a replacement for the glibc, which aim is to produce
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smaller statically linked binaries)
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The use for dietlibc in the stage1 was clear because currently used
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install process on x86 is from a 1.44 Mbytes floppy. On this floppy we
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need to fit the kernel, modules (scsi and network access), and the code to
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do the basic things to load the stage2. The only part on which we could
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progress was the code.
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As always, figures demonstrate evidences. Here are the size of the
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binaries used for the cdrom, disk, network and full floppy installs, using
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newt as the UI library:
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- with glibc
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-rwxr-xr-x 1 gc gc 569448 May 15 15:29 stage1-cdrom
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-rwxr-xr-x 1 gc gc 572264 May 15 15:29 stage1-disk
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-rwxr-xr-x 1 gc gc 624712 May 15 15:30 stage1-network
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-rwxr-xr-x 1 gc gc 720360 May 15 15:29 stage1-full
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- with dietlibc
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-rwxr-xr-x 1 gc gc 169332 May 15 14:26 stage1-cdrom
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-rwxr-xr-x 1 gc gc 172180 May 15 14:26 stage1-disk
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-rwxr-xr-x 1 gc gc 198612 May 15 14:26 stage1-network
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-rwxr-xr-x 1 gc gc 251764 May 15 14:26 stage1-full
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The `stage1-full' binary has code for many things, most notably: data
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decrunching (bzlib), archive extraction (in-house format), module loading
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(insmod from busybox), PCI detection, ide and scsi handling,
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cdrom/disk/loopback mounting, DHCP client negociation (redhat+grub), NFS
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mounting (util-linux), FTP and HTTP transmission (redhat), pcmcia
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initializing (pcmcia-cs), UI interaction (slang/newt); with use of the
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dietlibc, the binary is only 250 kbytes!
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Due to the modular coding, it is also possible to choose to not use
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slang/newt as the UI, but a stdio-only UI. In that case, the binaries get
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even smaller:
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-rwxr-xr-x 1 gc gc 104500 May 15 15:46 stage1-cdrom*
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-rwxr-xr-x 1 gc gc 107348 May 15 15:46 stage1-disk*
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-rwxr-xr-x 1 gc gc 133972 May 15 15:47 stage1-network*
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-rwxr-xr-x 1 gc gc 187348 May 15 15:46 stage1-full*
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gc [Tue May 15 15:58:34 2001] |