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Update. 

1998-04-09  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/i386/i486/bits/string.h: Remove unused variables.

	* misc/syslog.c (closelog_internal): Set LogTag to NULL.
cvs/glibc-2-1-branch
Ulrich Drepper 28 years ago
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4 changed files with 69 additions and 9 deletions
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  1. 6
      ChangeLog
  2. 67
      FAQ
  3. 1
      misc/syslog.c
  4. 4
      sysdeps/i386/i486/bits/string.h

6
ChangeLog
View File

@ -1,3 +1,9 @@
1998-04-09 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/i386/i486/bits/string.h: Remove unused variables.
* misc/syslog.c (closelog_internal): Set LogTag to NULL.
1998-04-09 14:27 Ulrich Drepper <drepper@cygnus.com>
* manual/socket.texi (Interface Naming): Correct @deftypefun line

67
FAQ
View File

@ -81,6 +81,8 @@ please let me know.
object, consider re-linking
Why? What should I do?
2.19. What do I need for C++ development?
2.20. Even statically linked programs need some shared libraries
which is not acceptable for me. What can I do?
3. Source and binary incompatibilities, and what to do about them
@ -116,6 +118,9 @@ please let me know.
4.2. When I try to compile code which uses IPv6 headers and
definitions on my Linux 2.x.y system I am in trouble.
Nothing seems to work.
4.3. When I set the timezone I'm by setting the TZ environment variable
to EST5EDT things go wrong since glibc computes the wrong time
from this information.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
@ -138,6 +143,8 @@ probably in the future, are:
powerpc-*-linux-gnu Linux and MkLinux on PowerPC systems
sparc-*-linux-gnu Linux-2.x on SPARC
sparc64-*-linux-gnu Linux-2.x on UltraSPARC
arm-*-none ARM standalone systems
arm-*-linuxaout Linux-2.x on ARM using a.out binaries
Ports to other Linux platforms are in development, and may in fact
work already, but no one has sent us success reports for them.
@ -597,11 +604,7 @@ probably a missing or incorrect /usr/lib/libc.so file; note that this
is a small text file now, not a symlink to libc.so.6. It should look
something like this:
GROUP ( libc.so.6 ld.so.1 libc.a )
or in ix86/Linux and alpha/Linux:
GROUP ( libc.so.6 ld-linux.so.2 libc.a )
GROUP ( libc.so.6 libc_nonshared.a )
2.8. How can I compile gcc 2.7.2.1 from the gcc source code using
@ -763,6 +766,34 @@ If you're upgrading from glibc 2.0.x to 2.1 you have to recompile
libstdc++ since the library compiled for 2.0 is not compatible due to the new
Large File Support (LFS) in version 2.1.
2.20. Even statically linked programs need some shared libraries
which is not acceptable for me. What can I do?
{AJ} NSS (for details just type `info libc "Name Service Switch"')
won't work properly without shared libraries. NSS allows using
different services (e.g. NIS, files, db, hesiod) by just changing one
configuration file (/etc/nsswitch.conf) without relinking any
programs. The only disadvantage is that now static libraries need to
access shared libraries. This is handled transparently by the GNU C
library.
A solution is to configure glibc with --enable-static-nss. In this
case you can create a static binary that will use only the services
dns and files (change /etc/nsswitch.conf for this). You need
to link explicitly against all these services. For example:
gcc -static test-netdb.c -o test-netdb.c \
-lc -lnss_files -lnss_dns -lresolv
The problem with this approach is that you've got to link every static
program that uses NSS routines with all those libraries.
{UD} In fact, one cannot say anymore that a libc compiled with this
option is using NSS. There is no switch anymore. Therefore it is
*highly* recommended *not* to use --enable-static-nss since this makes
the behaviour of the programs on the system inconsistent.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
@ -1071,6 +1102,32 @@ Also, make sure you have a suitably recent kernel. As of the 970401
snapshot, according to Philip Blundell <Philip.Blundell@pobox.com>, the
required kernel version is at least 2.1.30.
4.3. When I set the timezone I'm by setting the TZ environment variable
to EST5EDT things go wrong since glibc computes the wrong time
from this information.
{UD} The problem is that people still use the braindamaged POSIX
method to select the timezone using the TZ environment variable with a
format EST5EDT or whatever. People, read the POSIX standard, the
implemented behaviour is correct! What you see is in fact the result
of the decisions made while POSIX.1 was created. We've only
implemented the handling of TZ this way to be POSIX compliant. It is
not really meant to be used.
The alternative approach to handle timezones which is implemented is
the correct one to use: use the timezone database. This avoids all
the problems the POSIX method has plus it is much easier to use.
Simply run the tzselect shell script, answer the question and use the
name printed in the end by making a symlink to
/usr/share/zoneinfo/NAME (NAME is the returned value from tzselect)
from the file /etc/localtime. That's all. You never again have to
worry.
So, please avoid sending bug reports about time related problems if
you use the POSIX method and you have not verified something is really
broken by reading the POSIX standards.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

1
misc/syslog.c
View File

@ -304,6 +304,7 @@ closelog_internal()
close (LogFile);
LogFile = -1;
connected = 0;
LogTag = NULL;
}
void

4
sysdeps/i386/i486/bits/string.h
View File

@ -1202,7 +1202,6 @@ __strcspn_g (__const char *__s, __const char *__reject)
{
register unsigned long int __d0, __d1, __d2;
register __const char *__res;
int __mem;
__asm__ __volatile__
("pushl %%ebx\n\t"
"movl %4,%%edi\n\t"
@ -1311,7 +1310,6 @@ __strspn_g (__const char *__s, __const char *__accept)
{
register unsigned long int __d0, __d1, __d2;
register __const char *__res;
int __mem;
__asm__ __volatile__
("pushl %%ebx\n\t"
"cld\n\t"
@ -1404,7 +1402,6 @@ __strpbrk_g (__const char *__s, __const char *__accept)
{
register unsigned long int __d0, __d1, __d2;
register char *__res;
int __mem;
__asm__ __volatile__
("pushl %%ebx\n\t"
"movl %%edx,%%edi\n\t"
@ -1508,7 +1505,6 @@ __strstr_g (__const char *__haystack, __const char *__needle)
{
register unsigned long int __d0, __d1, __d2;
register char *__res;
int __mem;
__asm__ __volatile__
("cld\n\t"
"repne; scasb\n\t"

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