Programming :: Compiling The Library + Application?
Nov 28, 2010
I'm trying to learn how to cross-compile libraries (static and shared) and executables for the Blackfin + uClinux environment.At this point, I can successfully compile a stand-alone "Hello, world" but fail when trying to add a (static) library to the mix.Here's the source code I wrote:
Code:
#========== bar.h
void mytestfunc(void);
#========== bar.c
#include <stdio.h>
[code]...
Googling for this returns talks about "name mangling", but I don't know if this is what it is, and how to change the source/command to solve it.
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Jul 29, 2011
I am trying to use the QT4 frontend of poppler library in my application so I need to compile the library.In its main directory ./configure can be run but I got
Code:
checking which font configuration to use... fontconfig
checking for FONTCONFIG... no
configure: error: Package requirements (fontconfig >= 2.0.0) were not met:
No package 'fontconfig' found
Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables FONTCONFIG_CFLAGS
and FONTCONFIG_LIBS to avoid the need to call pkg-config.See the pkg-config man page for more details.
I have fontconfig installed (ubuntu):
2.8.0-2.1ubuntu3 (fontconfig)
However I have no idea where those flags are and what to set them to.
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May 8, 2010
I've created 3 files: swap.h and swap.c then make static library from it
Code:
Then I write 2 program to test this library: test_swap.c and test_swap.cpp
I compile
Code:
What's wrong with this in C++? And how can I make a library that can work both for any C and C++ program?
Here the source code
Code:
Code:
Code:
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Jan 2, 2011
i was wondering if there is away to avoid application from closing if a specific library not found? for example: if my application uses libPng and it wasn't found on the system running my app (binary and not source), is there anyway to just disable the part that uses png from my application?
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Mar 18, 2010
I am currently having an application package which provides some applications.however API's for the same will be provided by third party.Currently i am using a dummy functions in my code.Now i have a release by the third party for the first Api version.They have given a set of .so libraries.How do i integrate this with my application?Also i need an idea in general to how to go ahead with programming in such a development scenario where in it is distribued?
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Aug 18, 2010
I have tried to compile several programs from source code and have into a similar error in each case. I try make the program and I get an error like: fail program confsdefs.h. Reading further into the log file, I see there is a long list of missing library files when I compile something like Samba 3.5.x:
[Code]...
I have searched for dependency information and used apt-get to add anything I can find. How can I identify and find the dependencies for source? I have checked the source documentation though typically does not list required packages. My other question is how to check the path used to locate the libraries? Given the length of the missing library list, I think the problem may be configuring make.
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May 21, 2010
I'm interested in modding an open-source turn based game called Advanced Strategic Command or ASC, but to do that I need bunch of libraries. Installing those libraries is very easy in linux, I know but the thing is I'm working with windows in which the building of the libraries is a bit more complex, as you probably know. One of those libraries is the ligsigc++, I'm using VC++ but haven't been successful in building the libsigc++ in VC++. I considered making my life easier with Cygwin (a unix shell for windows) and simply executing ./Configure, Make. I's worked like a charm and the library dll it produced is named cygsigc-2.0-0.dll which made me wonder is compiling a library in cygwin to be linked with VC++ perfectly ok? That is is there any difference in compiling in cygwin and VC++?
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Jan 10, 2010
I was wondering if there is an argument I can pass to the configuration file to have it use a library from a non-standard path to compile with - for example I would like it to use my perl located in /scratchbox/users/jeff91/usr/bin/perl instead of the standard /usr/bin/perl
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Apr 7, 2009
I'm reading about shared, static, and dynamic libraries. What is SDL? Is it static, shared, or dynamic?
I always thought a library would be a lot of .h and .cpp files compiled separately into .o files and then if you compiled your own program you could use the -l parameter to link the library and it was all compiled together. Now I'm not so sure.
I don't even see any SDL .cpp files in my system anywhere. All I have are lots of SDL .h files in /usr/include/SDL and I don't really understand the code in them.
I'm making a wild guess here: SDL is a shared library. SDL itself is NOT compiled into my program, therefore SDL must be on any system my program tries to run on. When I compile and link SDL all it needs is the header files to know what SDL function and objects it can use. And then on every system it uses an already compiled SDL shared library thingy somewhere.
So... where is that part of SDL? All I can find are header files.
I'm thinking the advantage of shared libraries is that someone could say update SDL on their own system and take advantage of the new features without having to download new executables with the new version of SDL compiled into them for every program that uses SDL.
So if I'm making an editor and a game engine and they both use a lot of the same .cpp and .h files that I wrote and I'm tired of updating one and then the other and I need to turn them into a library, then a shared library might be kind of a silly solution. I could just make a static library. Right? Because it's not SDL. Nobody else is ever going to use this library.
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May 2, 2011
I built a shared library for some API functions (C files) and compiled them with gcc. Now I'm writing a c++ application (compiling with g++) and want to link my C API shared library and be able to use it from my application. Is this possible? At first instance, it's not quite working for me. I was able to link my shared lib just fine with a C application but got an "undefined reference to `apiFunction()'" error when attempting to do it with g++. Just want to see if anyone has any insight on this subject and make sure this mix is even is allowed.
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Nov 18, 2009
How can we convert a dynamic library (filename.so) to a static library (filename.a) using gnu gcc . Can we get a static library form a dynamic library . I saw a few post in which the conversion form a static library to a dynamic library is mentioned but, unfortunately, not the other way.
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Jan 1, 2010
I am using Debian Lenny with LXDE. For some reason, I would like to use some software which is developed under KDE, such as Kile. But the fonts are not so good (screenshot here).
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Jun 18, 2010
I need to install libssh2 on my CentOS 32bit server to get ssh2 extension of PHP working, after installation of this rpm, I still can't run "pecl install ssh2-beta" because it give me this error: configure: error: The required libssh2 library was not found. You can obtain that package from [URL] ERROR: `/tmp/tmp2ImZz1/ssh2-0.11.0/configure --with-ssh2=/usr' failed
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Nov 22, 2010
I'm trying to compile a beta MIPS simulator application built on the Qt UI framework, called QtSpim. It's been quite a learning experience for me so far, but I've run into a roadblock.The beta can be downloaded from here: URL... (look in the column on the right).I first had trouble finding qmake, then found out that I could use qmake-qt4.
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Jul 28, 2011
Trying to run Sauerbraten and Frozen-Bubble on Slackware 13.1 - I get sauerbraten:
Code:
libpng warning: Application was compiled with png.h from libpng-1.4.2
libpng warning: Application is running with png.c from libpng-1.2.43
libpng error: Incompatible libpng version in application and library
frozen-bubble:
Code:
libpng warning: Application was compiled with png.h from libpng-1.4.2
libpng warning: Application is running with png.c from libpng-1.2.43
libpng error: Incompatible libpng version in application and library
I've tried recompiling the libpng 1.4.2 package with the ln -sf libpng.so.3 libpng.so.0 uncommented from the Slackbuild script, and recompiled gd, and still haven't had any success.
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May 23, 2010
I had to install Eclipse 3.5 without using Yast or zypper because i) version 3.5 is not packaged yet and ii) I needed 3.5 to work with a specific eclipse plug-in. The installation was a simple uncompression of an tar.gz archive. Now I would like to start eclipse from Krunner but it does not seem to know anything about my install (as expected!). My 2 attempts to make Krunner aware of my eclipse install did not work. What I have tried was:- add an alias in my .bashrc file - add a $PATH call to the eclipse directory in my .bashrc
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Apr 18, 2010
How to make simple games (snake, pong... nothing too fancy). I have completed making snake and now want to be able to distribute it. I built it using C++ and wxWidgets so it would be multi-platform. I'm able to compile it and run it in both Windows and Ubuntu using g++. In windows, I was able to distribute it by putting a *.dll file in the same folder as the executable. However in Linux, I don't understand what I need to do so that it would run on any installation of Ubuntu out of the "box". When I build it and try to run it in a different installation of Ubuntu (which has g++) it gives me an error saying that a particular library file was not found and Getlibs fails to find that library file.
Is there a way to build a project with G++ so that all the dependencies are either packaged in the executables or copied into the folder....?
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Nov 9, 2010
I'm trying to make one that has some sorts in it for now. I know you have to make a header file and a .cpp file. I'm using VC++(yes, I'm in school so windows in needed. I use Ubuntu at home I swear D if it makes a difference. What goes in the header file, how is the cpp file set up, and then where do I put the files once I'm done?
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Nov 15, 2010
bluetoth library for c++
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Jun 17, 2010
i have a code written in c..for which i was trying to create a gui using Gtk+.but now i want to use qt4 for the same purpose but native language of qt4 is C++. i have to do library binding for my C code to develop a gui using qt4.
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Mar 30, 2010
I am trying to write a program that can get the times from files on a NTFS drive in Linux using the ntfs-3g library. I have installed the development libraries and source on my Fedora 10 machine. I can find the headers in the /usr/include/ntfs-3g directory but when i try and compile my program I am getting an undefind reference to ntfs_mount() call. I have the following in my link string
g++ -L/lib -o ProgramName -lpthread -lntfs-3g
I did a pkg-config --cflags --libs libntfs-3g and it said all i needed was the -L/lib -lpthread and -lntfs-3g.
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Mar 31, 2010
To create a static library, or to add additional objectiles to an existing static library, I can use a command like this:ar rcs my_library.a file1.o file2.oBut how to add an existing static library to my own static library. I have created my own static library using the command above and want to link against the library libuuid.a (placed in /usr/lib/).
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Dec 9, 2010
I jus found that #include<stdio.h> is not working with gcc and neither any function from the library like clrscr(); i found due to <stdio.h> is a windows lobrary file so its not come with linux. But I want to to know if I have to call any function from that library what should I do? Is there any way to install <stdio.h> in linux?
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Apr 24, 2010
Where are the definitions for C library functions located? It was just recently that I realized that header files don't actually define any functions, they merely include their prototypes.
For instance, stdio.h includes the following line:
Code:
This just means that the definition of printf() is located in another file. What file? Is there some kind of default shared object file that is automatically included during compilation?
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Jul 21, 2010
Where is the location of the header files for the c++ standard library?
I assume that they were installed by gnu g++, please correct me if i'm wrong.
I'm running ubuntu 10.04 with g++ 4.4.
I looked in /usr/lib/gcc/i486-linux-gnu/4.4/include, but this directory contains only the following:
Code:
Which doesnt seem to include the really basic things like iostream, for example.
Where can I take a look at the header files for these standard c++ libraries?
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Feb 15, 2011
I have visited these boards a few times, but never posted. Here's my problem: I was given the source to a program and asked to get it running on a 64-bit Debian 2.6.26 machine. Currently it is working on 2 64-bit OpenSUSE machines.
The application uses TCL TK for a GUI and everything compiles just fine; however, on startup, the user must enter one of three possible modules to load; when attempting to load these modules (tcl 'load' function), I receive this error:
Code:
Error in startup script: couldn't load file "../Build/libMpf.so": libTransReaders.so: cannot open shared object file: No such file or directory
while executing
"load ../Build/libMpf.so Mpf"
("eval" body line 1)
invoked from within
"eval load ../Build/${px}${i}${sx} $i"
[Code]...
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Aug 25, 2009
is there a way to debug my library files from DDD? Basically a way to pass the paths to DDD so I can view the source etc. I'm having a segmentation nightmare, which only crops up about every 10 or so starts, I know it's in one file in a library. I could move the source file into my general code to debug, but am sure there's a way in DDD.
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Jun 9, 2010
I need to create a software library with two copy file routines in it. This library will be used in a TCL script. I know how to write the routines, but I have never created a library before. How do I do this?
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Jul 14, 2010
Is there any library in C(C++) for web server connection?because I do not want use socket.
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Jul 27, 2010
If we have a .so library elf in linux, will it be possible to find out the APIs supported by it. Or in other words, the functions that can be used along with the argument types and return type.? Note that we dont have any other header files or documentations related to the library.
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