/[magellan-source]/trunk/mkinitrd-magellan/klibc/usr/klibc/README.klibc

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

Revision 1122 - (show annotations) (download)
Wed Aug 18 21:11:40 2010 UTC (13 years, 8 months ago) by niro
File size: 2673 byte(s)

-updated to klibc-1.5.19

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	avr32: Not yet ported
42	cris: Working
43	h8300: Not yet ported
44	i386: Working
45	ia64: Working static, shared untested
46	m32r: Untested
47	m68k: Untested
48	m68knommu: Not yet ported
49	mips: Working
50	mips64: Not yet ported
51	parisc: Working
52	parisc64: Not yet ported
53	ppc: Working
54	ppc64: Working
55	s390: Working
56	s390x: Working
57	sh: Untested
58	sh64: Not yet ported
59	sparc: Working
60	sparc64: Untested
61	v850: Not yet ported
62	x86-64: Working
63	xtensa: Not yet ported
64
65	Shared library support requires recent binutils on many
66	architectures.
67
68	Note that even the "working" ones likely have bugs. Please report
69	them if you run into them.
70
71	c) Type "make" and pray...
72
73	d) Try the test programs in the tests/ directory. They should run...
74
75	Contact the klibc mailing list:
76
77	http://www.zytor.com/mailman/listinfo/klibc
78
79	... for more info.
80
81	-hpa