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Top Forums UNIX for Advanced & Expert Users a question about debug using gdb(/lib32/libc.so.6: No such file or directory) Post 302277312 by yanglei_fage on Friday 16th of January 2009 02:46:07 AM
Old 01-16-2009
a question about debug using gdb(/lib32/libc.so.6: No such file or directory)

Hi all,

(gdb) target remote 192.168.185.196:1389
Remote debugging using 192.168.185.196:1389
warning: Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code.
0x2fbd0800 in ?? ()
(gdb) l
1 #include <stdio.h>
2
3 int main()
4 {
5 printf ("Hello World\n");
6 return 0;
7 }
(gdb) b main
Breakpoint 1 at 0x1000067c: file hello.c, line 5.
(gdb) info reg pc
pc: 0x2fbd0800
(gdb) c
Continuing.
Error while mapping shared library sections:
/lib32/libc.so.6: No such file or directory.
Error while mapping shared library sections:
/lib32/ld.so.1: No such file or directory.

Breakpoint 1, main () at hello.c:5
5 printf ("Hello World\n");


From the above message, we can see the gdb use the host lib,as we know, It *should* using target lib, it confuses me , why it can get the right output using the host lib,
 

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GZEXE(1)						      General Commands Manual							  GZEXE(1)

NAME
gzexe - compress executable files in place SYNOPSIS
gzexe name ... DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files: -rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb -rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~ /usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file. You can remove /usr/bin/gdb~ once you are sure that /usr/bin/gdb works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
gzip(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail). BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. GZEXE(1)
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