I have the following problem with C++ programs on Unix:
There is a binary executable program called, e.g. Main. It is dynamically linked with two shared libraries: Shared1 and Shared2. Both of these libraries, in turn, are statically linked with a static library called Static. This static library has a static object called StaticObj declared and defined as:
Now, when I run the execucable Main, I get into the problem that StaticObj is initialized twice. This means that MyClass constructor is called twice on the same address. The same story happens with the destructors.
It is naturally that such behaviour would not be desired, especially when you deal with some objects that have states. Neither is applicable variant, which makes two independed copies of StaticObj for libraries Shared1 and Shared2 (imagine that StaticObj is a mutex!).
Has anyone run across a similar problem and found a good solution?
I'm writing a program which uses curl to be run on Linux PCs which will be used by a number of different users. I cannot make the users all install curl on their individual machines, so I have tried to link curl in statically, rather than using libcurl.so. I downloaded the source and created a... (8 Replies)
im used to windows dll which gets loaded at runtime, are static libraries the same? the ones i link with -l on gcc?
i mean, if my app used libpng for example, and i compiled it to a single ELF executable and took it to another pc that have no libpng on it, will it work? or it will complain... (2 Replies)
I have some static library(libxxx.a libyyy.a).
And I want to generate my library(libzzz.a), libzzz.a will use libxxx.a and libyyy.a
I wan't my application only use libzzz.a, (means libzzz.a had include libxxx.a, libyyy.a), how can I do that? Thank you.
example:
I have zzz.c.
I do ... (4 Replies)
hello, i need help on setting my coyote linux, i've working on this for last 5 days, can't get it to work. I've been posting this message to coyote forum, and other linux forum, but haven't get any answer yet. Hope someone here can help me...... please see my attached picture first.
... (0 Replies)
Hi,
Let's say there's an application compiled with a static library. So, if the application forks processes, then the static library is copied, also? Or the static library codes are shared between the processes of the application?
Thanks in advance. (2 Replies)
can someone explain whether my understanding is correct
lets suppose we have a program that uses library x.
if x is static then the code of x will be part of our program, so if we're going to have 5 executables of our program, then each executable will have x as part of it.
Also, x does not... (2 Replies)
Has anyone installed BO on a Solaris 8 server that accesses DB2? I am having a problem the I am filling a file system up but the available precentage remains the same. (1 Reply)
Hi. Does anyone know by how much a text size of an executable(on ibm) would grow if you link one shared object(library)? Is it a constant number or it depends on a .so that is linked? (3 Replies)
hi all !
Do I need all the shared objects to be present while compiling my code which has reference to a only one shared object, which in turn refers to another shared object.
for example I want to compile example.c which refers to sample.so
sample.so has refrence to anothersample.so
do... (2 Replies)
Hi Friends !
I have a library, say libxyz.a.
To view all the object files in the archive, i issued the command :
ar -t libxyz.a
which displayed all the object files it contains.
Now, I would like to know the functions in each object file.
Is there any such command that displays... (3 Replies)
PLDD(1) Linux User Manual PLDD(1)NAME
pldd - display dynamic shared objects linked into a process
SYNOPSIS
pldd PID
pldd OPTION
DESCRIPTION
The pldd command displays a list of the dynamic shared objects that are linked into the process with the specified process ID. The list
includes the libraries that have been dynamically loaded using dlopen(3).
OPTIONS
-?, --help
Display program help message.
--usage
Display a short usage message.
-V, --version
Display the program version.
VERSIONS
pldd is available since glibc 2.15.
CONFORMING TO
The pldd command is not specified by POSIX.1. Some other systems have a similar command.
EXIT STATUS
On success, pldd exits with the status 0. If the specified process does not exist, the user does not have permission to access its dynamic
shared object list, or no command-line arguments are supplied, pldd exists with a status of 1. If given an invalid option, it exits with
the status 64.
EXAMPLE
$ echo $$ # Display PID of shell
1143
$ pldd $$ # Display DSOs linked into the shell
1143: /usr/bin/bash
linux-vdso.so.1
/lib64/libtinfo.so.5
/lib64/libdl.so.2
/lib64/libc.so.6
/lib64/ld-linux-x86-64.so.2
/lib64/libnss_files.so.2
NOTES
The command
lsof -p PID
also shows output that includes the dynamic shared objects that are linked into a process.
SEE ALSO ldd(1), lsof(1), dlopen(3), ld.so(8)GNU 2014-09-27 PLDD(1)