Re: HEADS UP: cvs commit: src/lib/libftpio Makefile (fwd)

2000-07-09 Thread Peter Wemm 

"David O'Brien" wrote:
 On Thu, Jul 06, 2000 at 06:05:50PM -0700, Peter Wemm wrote:
  This is *not* the same as the a.out behavior which searched directories to
  find the largest number.  ELF uses the symlinks and no searching, which is
  why ld and ld-elf.so is faster when locating directories and does not need
  ldconfig or the ld.so.cache.
 
 Correct me if I am wrong, ld-elf.so does still need ldconfig.  And
 ld-elf.so does not use the symlink (if it did compat libs would not
 work).

The ELF ldconfig does nothing except set the default search path for
finding libraries:

peter@t8000[12:54am]~-183 hd /var/run/ld-elf.so.hints 
  45 68 6e 74 01 00 00 00  80 00 00 00 37 00 00 00  |Ehnt7...|
0010  00 00 00 00 36 00 00 00  00 00 00 00 00 00 00 00  |6...|
0020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  ||
*
0080  2f 75 73 72 2f 6c 69 62  3a 2f 75 73 72 2f 6c 69  |/usr/lib:/usr/li|
0090  62 2f 63 6f 6d 70 61 74  3a 2f 75 73 72 2f 58 31  |b/compat:/usr/X1|
00a0  31 52 36 2f 6c 69 62 3a  2f 75 73 72 2f 6c 6f 63  |1R6/lib:/usr/loc|
00b0  61 6c 2f 6c 69 62 00  |al/lib.|

ld(1) resolves the symlinks.  ld-elf.so.1 searches for the full filename
in the directory path from ldconfig -elf.

objdump --all-headers /usr/bin/vi:
...
Dynamic Section:
  NEEDED  libncurses.so.5
  NEEDED  libc.so.4
..

All ld-elf.so.1 has to do is look for the first one of:
/usr/lib/libc.so.4
/usr/lib/compat/libc.so.4
/usr/X11R6/lib/libc.so.4
/usr/local/lib/libc.so.4

This is just done with a series of open(2) calls and is very cheap.  The
first one it can open it uses.

Cheers,
-Peter
--
Peter Wemm - [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]
"All of this is for nothing if we don't go to the stars" - JMS/B5



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Re: HEADS UP: cvs commit: src/lib/libftpio Makefile (fwd)

2000-07-08 Thread David O'Brien 

On Thu, Jul 06, 2000 at 06:05:50PM -0700, Peter Wemm wrote:
 This is *not* the same as the a.out behavior which searched directories to
 find the largest number.  ELF uses the symlinks and no searching, which is
 why ld and ld-elf.so is faster when locating directories and does not need
 ldconfig or the ld.so.cache.

Correct me if I am wrong, ld-elf.so does still need ldconfig.  And
ld-elf.so does not use the symlink (if it did compat libs would not
work).
 
-- 
-- David  ([EMAIL PROTECTED])


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HEADS UP: cvs commit: src/lib/libftpio Makefile (fwd)

2000-07-06 Thread Kris Kennaway 

If anyone has done a make world within the past few days you should remove
your libftpio.6 since the version bump was made in error. It's now back to
libftpio.5.

Kris

--
In God we Trust -- all others must submit an X.509 certificate.
-- Charles Forsythe [EMAIL PROTECTED]

-- Forwarded message --
Date: Thu, 6 Jul 2000 13:19:02 -0700 (PDT)
From: Hajimu UMEMOTO [EMAIL PROTECTED]
To: [EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: cvs commit: src/lib/libftpio Makefile

ume 2000/07/06 13:19:02 PDT

  Modified files:
lib/libftpio Makefile 
  Log:
  Reduce shlib major that is bumped by my mistake.
  We don't need bumping it in this time.
  
  Revision  ChangesPath
  1.11  +2 -2  src/lib/libftpio/Makefile





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