Im doing a project,in which i have to add a script in c++ inorder to merge two or pdf files page by page or based on some headindgs.SO anyone can please suggest me any open source pdf libraries in c++ which provide functions for merging and splitting.
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I am learning C++ and wish to include some Boost functions in my code. My machine is running Debian Linux with the pre-installed boost binarys.I have a couple of questions:How do I include the library in my C++ code as there are no cpp or h files only binary files (eg /usr/lib/libboost_regex-d.so and /usr/lib/libboost_regex-d.a)How do I comile the code. I am using DialogBlocks for creating forms using wxwidgets. The editor also compiles the code using the gcc compiler. Do I have to give an instruction to the compiler saying which file is requried and where to find it? If so, any ideas how this is done?
View 4 Replies View RelatedI am stuck with a problem to link static libraries with gcc. There is no problem with source files since I am able to compile in a machine where the static library is installed. I am compiling with the following: Code: :~/Emotion/pjproject-1.0.3/third_party 157% gcc -Wall -I/portaudio/include -o rec patest_record.c -L./lib -lportaudio-x86_64-unknown-linux-gnu
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So I decided to take my first steps into programming with C + gtk. So far I have doneI loaded eclipse and ensured I had the cdt package Created a new C/C++ project called "play" Added a new source file called "Playfullsrc.c" Added the following to paths and symbols (output of the command: pkg-config --cflags gtk+-2.0)
Code:
/usr/include/gtk-2.0
/usr/lib/gtk-2.0/include
/usr/include/atk-1.0
/usr/include/cairo
/usr/include/pango-1.0
/usr/include/pixman-1
/usr/include/freetype2
[Code]....
added "/usr/lib/libgtk-x11-2.0.so" to GCC C Linker Libaries (I have cheacked and this file exists) When I build the project I get the error message "cannot find -l/usr/lib/libgtk-x11-2.0.soplayline 0C/C++ Problem" I have been following this tutorial: [URL]
I have 2 questions... I couldn't find answers by Googling (more precisely, by Blackling) and in GCC documents, so I'm asking here.
1. There are 2 flags for position independent code, -fpic and -fPIC. All the examples I read use -fPIC... so when is -fpic useful and what is the difference?
2. Some tutorials use "g++ -shared" while others use "ld" for the creation of the shared library. Why? Does it matter which method I use? Is there a difference? Why does nobody mention both options?
I've been trying for days now to build my first FastCGI application using gcc.
This is the output:
Code:
I believe I wouldn't have to refer to the lib path, but I added the -L flag to be sure.
The directory /usr/lib includes (among others) these files:
Code:
I have tried to follow these instructions. The files in the tar.gz archive provided by FastCGI.com no longer corresponds to the instructions there, but I was still able to run the ./configure and make commands so I believe FastCGI is installed.
But why can not the library be properly linked to? Really hope you can help me out on this one!
Just what it says in the title.
I can work in a 32-bit VirtualBox VM, but it's very inconvenient and I would rather work in my 64-bit desktop if that's not too difficult.
These are all the lib32 packages I have installed code...
This post isn't really asking for a tutorial, but rather asking for some ideas. I've come up with a few ideas, but they seem cumbersome and unnecessary, so I was wondering if someone with more experience than me could out. Also, my explanations suck, but I'll try to do my best. So say I have an executable called X. At some point during its execution, X loads and uses (using dlopen and dlsym) a library called Y. In Y, there a bunch of functions that call the function called, for example, void *special_malloc (size_t). These functions come from another linked library (linked during compilation) called Z. Problem is, special_malloc contains some static variables within its scope, and when those variables are reset midway through a program, an invalid free occurs (special_malloc uses garbage collection). Now, what I want to happen is that whenever lib Z calls special_malloc, it instead calls the special_malloc defined in the executable X, so that these static variables are retained. Keep in mind that I have control of the Z library, meaning I can edit the source to fit my needs.
View 2 Replies View RelatedI'm using debian and, though i'm new to c++, i'm writing a program using it which needs some HTTPs functionalities . I found these libcurl libraries could help me but I haven been able to use them from my program. I installed them (power trio configure -make -make install ) but i guess i'm doing something wrong ... i feel like i should copy or link them somehow in my project (besides the include sentences in my code). I hope you could give me a hand with this im quite lost
View 9 Replies View RelatedI am using the API libpcap in order to filter the traffic of the port 53 from my PC ro other PCs, in other words the DNS traffic.I want to get more information about the DNS traffic that is being sent to the DNS server, in other words the queries. So far I have no idea how to read the information data or payload of the UDP package in order to read the content of the traffic for example if there is any PTR, A, MX, etc Resource Record.According to the RFC 1053 there is a header that is possible to use in order to easily get this info.
View 5 Replies View RelatedAny good tutorial on sharing dynamically allocated objects across shared libraries in the same process and between shared libaries and main(). In particular, I need to know what creation and destruction sequences are valid when libraries are being loaded and unloaded. For example, is it valid to allocate an object from inside a shared library procedure, and then delete that pointer from a different module, especially in the case where the allocating module has already been unloaded.
I imagine there might be all kinds of problems with this. Although my preliminary tests seem to work most of the time, I get crashes from time to time, but I'm not sure if they're caused by memory management or by threading issues. I've been restructuring my code to use a global context object to manage object creation and destruction from main(), but I'd like to find a clear exposition of the specific issues I'm dealing with before I go too much further.
I have been a predominant Windows user for a long time but shifted to Ubuntu recently. I was just trying out a few basic C functions when i realized that the "conio.h" header file isn't included in the libraries and therefore i was unable to use the "clrscr()" function.
I downloaded a tarball which contained the necessary library and header files including conio.h. Once extracted, i specified the location and included in the program as " #include "path to the header file" ".
I still didn't call the "clrscr()" function, and it compiled successfully. Next i edited the program to call that function and it gave the following error...
How i can add new libraries in the future?
Since I read that executing a library could return its version number, I ran "/lib/libc.so.0" on uClinux, but it triggers an error.I'm told that random libraries are not directly executable. Does someone know what a random library is?PS: In case that matters, here's the short version of the error:
Code:
Undefined instruction
<5> - May be used to emulate instructions that are not defined for
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Why many Linux distros are trying to use always the latest versions of the libraries and don't save the old libraries for compatibility? I mean, I can see libtiff for example, i can found a libtiff.so.5 on my /usr/lib, but doesn't store a libtiff.so.4 or 3 just for binary applications or games. For this example, I need libtiff.so.4 for uplink.
That should happen too on the old version of sims for linux, some ID games or others.What's wrong with storing old libraries? PD: Yay, my first post on 3 years!
I have a shared library (built from C++ code) and a separate C program which calls (extern) functions from the said library.
Also one of the functions in that library needs to call a function in this C program by declaring it 'extern'. This sort of creates a cyclic dependency.
I am getting "unresolved references" error, as expected.
I use OpenSuse 11.3, Eclipse Elios for C++. What do I have to do for using boost? I put #include <boost/regex.hpp>, but it can't find the file. What variable do I have to use?
View 3 Replies View RelatedI would like to ask you something about open-source and linux. Is it possible to make a commercial application for linux and sell it compiling it with linking to open-source libraries without altering them and consequently without allowing download of the source code and without making the application itself free?
View 3 Replies View RelatedI am trying to compile a C++ source file into a static library using make with root privileges (i.e., using "sudo"). However, I "sometimes" get the following compilation error:
Code:
g++ -Wall -g -fPIC -W -c /home/project/ether/src/packet-ethernet.cc
ar -cvq libether.a /home/project/ether/src/packet-ethernet.o
ar: /home/project/ether/src/packet-ethernet.o: No such file or directory
make: *** [libether.a] Error 1
I checked /home/project/ether/src folder to see if packet-ethernet.o in fact does not exist, and saw that it is actually located there, but its owner is "root", which is different from the current user. If I change the owner of packet_ethernet.o from root to the current user using "chown" command and execute make again with sudo, everything seems to be fine.
It may be a coincidence that I recently migrated to 64-bit platform from 32-bit, and then installed libboost-filesystem1.40-dev. After that, I began to experience such errors. I have "never" come across such a compilation error before. Even though I completely removed libboost-filesystem1.40-dev afterwards to see if it causes the problem, nothing changed.
After migrating to 64-bit and installing libboost-filesystem1.40-dev, my application exhibited another "weird" behaviour such that it produced "hidden" files using mkdir() system call, which were previously created as regular ones on the filesystem. Can compiler options that I use cause such problems? Is it possible that libboost-filesystem1.40-dev overwrote some system libraries so that I am getting such errors ?
While initializing my application the following errors is returned:
Bash profile for the user is as follows:
Is there any way to use a dynamic libraries as a static libraries instead when compiling, so that my resulting executable won't have them as dependencies?
View 3 Replies View RelatedI'm trying to link the MySQL libraries to some C code, the LambdaMOO server to be exact. I'm getting the following error:
gcc -g -O -L/usr/lib/mysql -lmysqld -I/usr/include/mysql ast.o code_gen.o db_lo
ad.o db_flush.o db_objects.o db_properties.o db_verbs.o decompile.o disassemble.
o eval_env.o eval_vm.o exceptions.o execute.o extensions.o functions.o keywords.
[code].....
You can see the link commands I'm using, and the lib and include path are both valid. I tried replacing -lmysqld with -lmysqlclient but this did not help. I'm using Debian and MySQL, libmysqld-dev and libmysqlclient-dev are all installed.
I am interested in using fortran and an external library called matio used to save arrays to matlab .mat files. I have installed the matio and matio-dev packages from synaptics but i cannot compile a code receiving an error Code: christos@christos-laptop:~/Desktop$ gfortran -o test test.f90 -lmatio -lz test.f90:2.13: USE MATIO 1
Fatal Error: Can't open module file 'matio.mod' for reading at (1): No such file or directory How can i load a module in order to use it in fortran through the GCC compiler?
Just curious how you can add libraries to /lib from the command line. My box just has a server distribution on it, so I obviously can't use synaptic. I downloaded a .tar.gz file for the libraries I need, and I assumed that you would use dpkg -i <packagename.tar.gz> but that doesn't seem to work.
View 4 Replies View RelatedI'm trying to install some third party software that looks for X11 libraries in either /usr/lib/X11 or /usr/lib64/X11, but both of these folders are empty on my CentOS 5.3 installation. Can someone tell me where to find these libraries, or what has replaced them? Based on what I've read so far, it looks like the xorg-x11-libs and xorg-x11-devel packages have been replaced in favor of the mesa-libGL stuff. Is this correct?
View 1 Replies View RelatedI'm executing the Wolfenstein Enemy Territory installer, and since finding the first package it missed, I've been stumped.It wants a gtklib-1.2.so, and I've been on the internet looking everywhere I know, I don't like to pester with easily-solvable problems.
I've found a lot about it, however no solutions when '-ubuntu' is added - seems Ubuntu folk apt-get this and that all the time, whereas I can't find what I'm looking for in the Software Manager or Software Search on [URL] I know the missing libraries are a simply case of back-tracking a bit and installing GTK1.x type packages, the thing is I can only find 2 onwards - I have everything in 64 and 32 versions, but just too reecent it seems.
For this case and in future similar cases - where are the old-school versions to be found, and how can they easily be added to SUSE if they come in an .rpm etc? A way of adding a broader selection to the package browser?
I've been trying to use the library boost/thread.hpp but I cant get it to link. Every time I try it looks like this:
Code:
tyler@TjLaptop01:~/Desktop$ g++ thing.CPP -o Desktop -lboost_thread
/usr/bin/ld: cannot find -lboost_thread
collect2: ld returned 1 exit status
I am working on a user space application that I would like to release under the LPGL. I am linking against libraries that I'm not sure if they are GPL or LGPL. Can someone help me determine if the libraries are GPL or LPGL.
For reference I have included a snippet of my gcc command:
How do I add new libraries to SuSe Linux?
View 1 Replies View RelatedI am new to linux environment. I need to install libxt-dev ; libx11-dev ; and xorg-dev (xserver-xorg-dev)
My Red Hat Linux Enterprise version is : Linux 2.6.9-5.EL # I think the redhat is enterprise edition 3
I installed Boost 1.43.0 on Fedora 12 32 bits, using standard build from the source code procedure:
./bootstrap.sh
./bjam
./bjam install
I see all Boost libraries in /usr/local/lib. Now I build my own program depending on the Boost libraries, and it is built successfully. However, when I try to execute my program, it shows "Library not found" message:
Code:
[alex@localhost ~]$ sixfpdconsole
sixfpdconsole: error while loading shared libraries: libboost_system.so.1.43.0: cannot open shared object file: No such file or directory
[alex@localhost ~]$ ldd /usr/local/bin/sixfpdconsole
linux-gate.so.1 => (0x009d1000)
libboost_system.so.1.43.0 => not found
libboost_thread.so.1.43.0 => not found
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