Magellan Linux

  • Back to homepage
    • /[magellan-source]/trunk/mkinitrd-magellan/klibc/usr/klibc/README

    Contents of /trunk/mkinitrd-magellan/klibc/usr/klibc/README

    Parent Directory Parent Directory | Revision Log Revision Log

    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 7 months ago) by niro
    File size: 2647 byte(s) 
    -import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
    1 This is klibc, what is intended to be a minimalistic libc subset for
    2 use with initramfs. It is deliberately written for small size,
    3 minimal entaglement, and portability, not speed. It is definitely a
    4 work in progress, and a lot of things are still missing.
    5
    6
    7 The build procedure is not very polished yet, but it should work like
    8 this:
    9
    10 a) In the source root directory (the directory above the one in which
    11 this file is found) create a symlink called "linux" pointing to a
    12 reasonably recent Linux kernel tree (2.4 or 2.6 should be OK.)
    13 This tree must have the include/asm symlink set up for the
    14 architecture you're compiling for, and include/linux/autoconf.h
    15 must exist. The easiest way to make sure of all of these is to do
    16 a "make config" or any of its variants on the kernel tree is
    17 question, followed by a "make dep" (2.4) or "make prepare" (2.6).
    18
    19 b) If you're cross-compiling, you need to set KLIBCARCH to the
    20 appropriate architecture, and set CROSS_COMPILE to your toolchain
    21 prefix.
    22
    23 IMPORTANT: if you're on a 64-bit machine with a 32-bit userland
    24 (ia64, mips64, ppc64 sparc64, s390x or x86_64), and you want to
    25 build the 32-bit version: you need to set KLIBCARCH to the 32-bit
    26 architecture as well as set up the linux/include/asm symlink to
    27 point to the 32-bit architecture. Building the 32-bit architecture
    28 usually (but not always) produces smaller binaries, and is likely
    29 to be better tested.
    30
    31 If you are on ARM, and want to build a thumb version of the library
    32 (this is supported), change OPTFLAGS in arch/arm/MCONFIG to build
    33 thumb code.
    34
    35 The following is the last known status of various architectures:
    36
    37 alpha: Working
    38 arm-thumb: Untested
    39 arm: Working
    40 arm26: Not yet ported
    41 cris: Working
    42 h8300: Not yet ported
    43 i386: Working
    44 ia64: Working
    45 m32r: Untested
    46 m68k: Untested
    47 m68knommu: Not yet ported
    48 mips: Working
    49 mips64: Not yet ported
    50 parisc: Working
    51 parisc64: Not yet ported
    52 ppc: Working
    53 ppc64: Working
    54 s390: Working static, shared untested
    55 s390x: Working
    56 sh: Untested
    57 sh64: Not yet ported
    58 sparc: Working
    59 sparc64: Untested
    60 v850: Not yet ported
    61 x86-64: Working
    62 xtensa: Not yet ported
    63
    64 Shared library support requires recent binutils on many
    65 architectures.
    66
    67 Note that even the "working" ones likely have bugs. Please report
    68 them if you run into them.
    69
    70 c) Type "make" and pray...
    71
    72 d) Try the test programs in the tests/ directory. They should run...
    73
    74 Contact the klibc mailing list:
    75
    76 http://www.zytor.com/mailman/listinfo/klibc
    77
    78 ... for more info.
    79
    80 -hpa