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Full Discussion: Creating a shared Libary ?
Top Forums Programming Creating a shared Libary ? Post 78083 by Lazzar on Friday 15th of July 2005 10:12:53 AM
Old 07-15-2005
Question Creating a shared Libary ?
hi,
I am trying to build a shared libary to overwrite some standard c functions (malloc etc), now i get the following error:

my system is AIX 5.2

Code:
gcc -fPIC -g -c -Wall mycfile.c

so far so good .o file created--> mycfile.o
now building the .a or .so libary (.a or .so ?? i am not sure which file type ist has to be)
Code:
gcc -shared -WI,-soname,libmystuff.so.1 -o libmystuff.so.1.0.1 mycfile.o -lc -ldl
ld: 0706-005 Cannot find or open file: libmystuff.so.1
        ld:open(): A file or directory in the path name does not exist.
collect2: ld returned 255 exit status

Why is he trying to open libmystuff.so.1 ?? he should create it!

what am i doing wrong?

Lazzar
 

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LEARN ABOUT HPUX

libumem

libumem(3LIB)                                                   Interface Libraries                                                  libumem(3LIB)

NAME

       libumem - object-caching memory allocation library

SYNOPSIS

       cc [ flag... ] file... -lumem [ library... ]
       #include <umem.h>

DESCRIPTION

       Functions  in  this  library provide fast, scalable object-caching memory allocation with multithreaded application support. In addition to
       the standard malloc(3C) family of functions and the more flexible umem_alloc(3MALLOC) family, libumem provides powerful object-caching ser-
       vices as described in umem_cache_create(3MALLOC).

       The  libumem  library also provides extensive debugging support, including  detection of memory leaks, buffer overruns, multiple frees, use
       of uninitialized data, use of freed data, and many other common programming errors. See umem_debug(3MALLOC).

INTERFACES

       The shared object libumem.so.1 provides the public interfaces defined below. See intro(3)  for  additional  information  on  shared  object
       interfaces.

       calloc                        free
       malloc                        memalign
       realloc                       umem_alloc
       umem_cache_alloc              umem_cache_create
       umem_cache_destroy            umem_cache_free
       umem_free                     umem_nofail_callback
       umem_zalloc                   valloc

FILES

       /usr/lib/libumem.so.1           shared object

       /usr/lib/64/libumem.so.1        64-bit shared object

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsl (32-bit)             |
       +-----------------------------+-----------------------------+
       |                             |SUNWcslx (64-bit)            |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+
       |MT-Level                     |MT-Safe                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       intro(3), malloc(3C), umem_alloc(3MALLOC), umem_cache_create(3MALLOC), umem_debug(3MALLOC), attributes(5)

SunOS 5.10                                                          22 May 2003                                                      libumem(3LIB)
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