Programming :: Trying To Use Libcurl And Curlpp Libraries In Program?
Jul 21, 2010
I'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
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Feb 9, 2011
I have need to call webservices using libcurl through C program under ubuntu environment. Ho can I do this. I am unable to call web service using curl.
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Jun 3, 2009
I have been working on this for a long time.
I could get the static libcurl library ( a "libcurl.lib" file and a "curl.h" file), which supposed to be working under Windows.
Yet I tried Visual c++ 6.0 but it wasn't working at all.
Some idea on that ? I don't mind to try MinGW and Dev C++ if it will really work. (Cygwin is not good since it require client to have cygwin.dll in run-time folder).
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Jan 15, 2010
I moved a program from one machine to a different one. When I run it on the new one I get errors. How do I tell what libraries it's missing and then find them?
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May 19, 2010
A 32-bit program (Cisco AnyConnect VPN Client) appears to be trying to load a library from /usr/lib even though the 32-bit library is installed in /usr/lib32:
ak@myo5a:~$ /opt/cisco/vpn/bin/vpnui
/usr/lib/gio/modules/libgvfsdbus.so: wrong ELF class: ELFCLASS64
Failed to load module: /usr/lib/gio/modules/libgvfsdbus.so
[code]....
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Dec 9, 2010
I'm using the FortiClient SSL VPN free version provided by my University. I can't get tech support from the university OR Fortigate. I have it running on one system, but I have no idea what the sequence of libraries I installed was. I need it to run on a second machine. pstree is only telling me that the FortiClient ssl daemon depends on pppd. I need to know how to find out what else it's using: LibPKCS and the like.
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Jun 28, 2011
I'm compiling a project that uses boost libraries (1.45.0) for a MIPS target, and when trying to compile with bjam I get the following error:
Code:
libboost_system-mt.a(error_code.o): In function `(anonymous namespace)::generic_error_category::message(int) const':
error_code.cpp:(.text+0x55c): undefined reference to `__glibc_strerror_r'
collect2: ld returned 1 exit status
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Mar 16, 2010
I have a third party static library (libSTATIC.a) that I cannot recompile into a shared library. I want to create a shared library (libSHARED.so) that uses the C functions in the static library. Is it possible to do this? In other words, when linking a C program with gcc by using the -shared flag, is it necessary that all all libraries invoked in the program (even low level libraries such as libc for example) be available as shared libraries as well?
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May 24, 2010
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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Feb 21, 2011
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?
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Oct 15, 2010
I 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
[Code]....
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Jan 30, 2010
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]
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Apr 4, 2010
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?
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Jan 6, 2010
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!
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Apr 11, 2010
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...
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Oct 22, 2010
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.
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Jun 9, 2010
I 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.
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Jun 1, 2009
Any 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.
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Mar 10, 2010
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?
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Jun 30, 2011
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
[code]....
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May 11, 2011
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!
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Feb 15, 2011
I will have to code this. However I am lacking of time since I have too much to do. make a short code bash/dash to prompt the country with Zenity, then, get the PLS or m3u url and prompt with another zenity which radio to play. http://www.listenlive.eu/index.html
My code to get url's radio country.htm is:
Code:
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Feb 6, 2011
I am very new to ubuntu, I would like to ask whether it is possible to check whether libcurl has been installed?
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Jun 2, 2010
I am trying to install AMANDA onto a RH Linux4 client, but when I type in: rpm -i amanda-backup_client-2.6.1p2-1.rhel4.i386.rpm
I get the error:
libcurl.so.3 is needed by amanda-backup_client-2.6.1p2-1.rhel4.i386
Suggested resolutions:
/var/spool/up2datecurl-7.12.1-11.el4.ppc.rpm
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May 4, 2010
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.
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Apr 5, 2011
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?
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Feb 10, 2011
I 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?
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Jan 27, 2010
I 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 ?
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Jan 18, 2010
Just i want one clarification regarding building libraries. I have a "c" program. i want to compile that program for ARM processor and i want to build ".a and .so" libraries for that c program.
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Oct 14, 2010
While initializing my application the following errors is returned:
Bash profile for the user is as follows:
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