Programming :: How To Link To Different APIs
Apr 21, 2010
I decided, as a project of mine, to create a small computer that could link up to a small display. Because the computer is very low-powered, guess what OS I decided to use? Linux... Ubuntu to be specific.Anyway, I come from using Xcode on OSX (very user-friendly compiler) and some tools for GUI and scripting development. That's where the problem comes in.I know C++, but I do not know how specifically Linux handles programming. I have the GCC compiler installed, and I know the terminal command to compile, but I have a few questions:
1. How do I link to different APIs (like OpenGL)
2. When I compile multiple files, do I compile the main .cpp/.cc file? Or is there a project file I use.
3. Is there a way to make GUIs easily in Linux? I was looking at the 'QT 4' tools.
4. What do the 'QT 4' tools do specifically?
5. Any good IDE? I am using 'Kate' at the moment, but I am not sure how it compares to other programs.
6. Any other tips? Pitfalls to watch out for? Hints to program quicker? Other software I could use?
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Feb 17, 2011
I have been googling all day looking for APIs exposed by the linux kernel for graphics n i haven found any information anywhere.
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Jul 9, 2011
I am writing a C program which is contains Mysql header files and APIs but it can not compile it and its error is : Quote: undefined reference to
to all of Mysql APIs that I included their headers .In command line I compile my source like this with no problem: Quote: gcc test.c -Wall -o test -lz `mysql_config --cflags --include --libs`
I think code block does not have bold italic part of this command. How can I add this to code block to compile my project or those project that contains Mysql APIs (just my project not all of defined projects that has no relation to mysql APIs)with this gcc flags.
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Jul 10, 2011
I am writing a C program which is contains Mysql header files and APIs but it can not compile it and its error is :
Quote:
undefined reference to
to all of Mysql APIs that I included their headers .In command line I compile my source like this with no problem:
Quote:
gcc test.c -Wall -o test -lz `mysql_config --cflags --include --libs`
I think code block does not have bold italic part of this command. How can I add this to code block to compile my project or those project that contains Mysql APIs (just my project not all of defined projects that has no relation to mysql APIs)with this gcc flags.
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Sep 6, 2010
In the ordering of files I keep I need links to directories. Sometimes I even need to move directories to new locations. I have tried using symlinks, but they become dead when I move the directory they point to. I have tried hard links, but I haven't found any Linux file system that would support hard linked directories. How can I achieve that a complex structure of directories (currently with symlinks for directories and hard links for files) keep symlinks live when directories are moved?
- is there any utility that updates symlinks when a directory is moved?
- is there any Linux filesystem that supports hard linked directories?
- is there any good Linux interface to the new NTFS (the only file system I know to support automatically updating directory links, called directory junctions)?
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Mar 28, 2010
Currently looking C / C++ libraries (or an API or SDK) that will access SMTP, IMAP, POP3 to work under Linux.
Does such an animal exist? I have googled and have seen *many* things for Windows but nothing for Linux.
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Mar 18, 2010
I have lot of problems installing red5 video server, on my VPS.First things first, here is the specs of my VPS:
OS: CENTOS 5.4 i686 virtuozzo on server
Administration: cPanel 11.25.0-S43473 - WHM 11.25.0 - X 3.9
Mysql: 5.0.89-community
PHP: 5.2.10
Apache 2.2.11
Saying that, I will try to explain my problem as detailed as possible:I try to install red5 video server, following the tutorials and guides to do that, but there are some prerequisites to fulfill before installing the program:
Prerequisite No.1.: Having the latest version of Apache ANT.
Prerequisite No.2: Having the latest Java devel version.
The server already got the Apache ANT 1.6, but red5 asks for 1.8 The server already got java 1.5 but red5 asks for 1.6 So, I try to update to ANT 1.8 and Java 1.6, but refuses to update, so I made a clean installation of both, doing this:[URL]
JAVA:
# yum -y install java-1.6.0-openjdk java-1.6.0-openjdk-devel
Then I install Apache ANT doing this:
# cd /usr/src
# wget http://opensource.become.com/apache/...8.0-bin.tar.gz
# tar zxvf apache-ant-1.8.0-bin.tar.gz
# mv apache-ant-1.8.0 /usr/local/ant
[code]....
Then, when I execute the command: ant -version to find out which version is running, I get more errors:
root@server [~]# ant -version
/usr/bin/build-classpath: error: Could not find xml-commons-apis Java extension for this JVM
/usr/bin/build-classpath: error: Some specified jars were not found
[code]...
Also, the VPS is not resolving the domains properly, prior to this, the domains were fine, but after that, I need to do a gracefull reboot, and then restart the named service.
1.- How can I undo all the things I did, I mean, is it a way to uninstall the APACHE ANT 1.6.5 and then the 1.8 and Java 1.6, and then start from the beginning?
2.- After uninstalling these 3 apps, I need to reinstall it properly, and make red5 work on the server, so, how can I do it safely?
A mistake I did, was to not to backup the server prior to make the changes, and is a production VPS on a shared server with the vpsnext.com hosting provider.I speak with the technical support, and they are not be able to help me, because is an unmanaged server.
One more strange thing is that, I already install red5, with ANT and JAVA in another server, with the same specs of this VPS, from another hosting provider, and I had no problems at all.
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Jun 13, 2010
I have made a very simple program in SDL that draws one image four times on a window.However I wanted it to be statically linked so the end user wouldn't have to install SDL and SDL-image in order to get the program working.
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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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Apr 7, 2011
In linking a library in using GCC.
I am compiling Pro*C code.
When the maKe file start compiling if prints following :
Code:
I tried different options but unable to find the reason why it is not linking the libraries correctly.
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Mar 29, 2009
I never had to use anything more than -l , -lm , -c ,-o.It was only through dev documentation that I came across glib. Now I want to to compile and link a program with glib.
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Dec 16, 2010
how to a write c++ progrms and link them to tcl. I.e if I want to implement a protocol of my own. I tried but lot of errors appear. In response to( file not included errors) i added proper paths of header files in (#include)my c++ file only to get many more errors.I tried also with marc greis tutorial 7th chapter ping protocol program also with same result. Even compiling a small c++ program is also difficult. Please anyone tell me the steps to be followed how to a write c++ progrms and link them to tcl. I.e if I want to implement a protocol of my own.
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Mar 23, 2010
I'm creating my personal site in HTML/CSS and Perl/CGI. I have a list of links:
Quote:
<a name="link1" href="/cgi-bin/script.cgi">value1</a>
<a name="link2" href="/cgi-bin/script.cgi">value2</a>
<a name="link3" href="/cgi-bin/script.cgi">value3</a>
<a name="link4" href="/cgi-bin/script.cgi">value4</a>
<a name="link5" href="/cgi-bin/script.cgi">value5</a>
I want capture values of "value*" in <a> tags with script.cgi.
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Jul 1, 2010
i am trying to link a code in C++ with tinyxmldll library:
Code:
master out # ls -la
total 1388
drwx------ 2 root root 4096 May 10 14:02 .
drwx------ 6 root root 4096 Apr 5 08:35 ..
[code].....
When i link, i get 'undefined reference' error:
Code:
master hneat # make nt
g++ -g -DTIXML_USE_STL -DHCUBE_NOGUI -fPIC -I./hneat -L./hneat -I/home/niko/hyperneat3/HyperNEAT_v3_0/JGTL/include/ -I/home/niko/hyperneat3/HyperNEAT_v3_0/tinyxmldll/include/ -I./Experiments -I../ -I./ -L/home/niko/hyperneat3/HyperNEAT_v3_0/tinyxmldll/out/ -L/usr
[code]....
The problem is, the symbols contain weird characters. How do I tell g++ that it should ignore these characters and link the functions correctly?
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Apr 26, 2011
i want know how to link mobility file with tcl script? i tried with set val(sc) "test" but getting error message like
[root@localhost example]# ns box.tcl
setting initial variables...
setting other default settings...
removing unecessary packet headers...
[code].....
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Jul 29, 2010
I need to make a link that goes absolutely nowhere, since it has an onclick event that uses javascript to show/hide content. It needs to look like a standard link and the mouse needs to change to the finger cursor like a standard link.
The following all don't work:
Code:
<a href="#" onclick="show_element('jetshop')">Read more...</a>
- moves to the top of the page.
<a href="" onclick="show_element('jetshop')">Read more...</a>
[code]....
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Jul 6, 2011
I would like to make gcc to link one lib (pthread in the example) statically, and the rest dynamically.
(See the example .c file at the end of this post.)
compiles fine, but every lib is linked dynamically.
Now every lib is linked statically
Not a dynamic executable
I would like to link the libpthread statically and the rest dynamically. Is it possible?
[url]says if I give the full path to the .a lib then it will be linked statically:
So for me it does not work.
On other sites I found that I should use -Wl,-Bstatic -lpthread -Wl,-Bdynamic, but it also doesn't work:
So, how can I do that?
Machine: Linux 2.6.16.60-0.27-bigsmp #1 SMP Mon Jul 28 13:06:32 UTC 2008 i686 i686 i386 GNU/Linux SLED 10
As an example I used a little demo program from [url]
Here is the code:
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Sep 12, 2010
Consider that symbolic links at times can be broken. The target reference can be lost or misplaced. As such, usage of a symbolic link becomes deterred or broken. I propose the following: Symbolic links from now on carry a checksum relating to the original file they are linked to. The original file will carry a property that checks if it has been changed. This property will figure out the new checksum, reconfigure the symbolic link, and continue the symbolic link. Furthermore, if the system were to change, there would exist the possibility of have a symblink-comparison feature that allows the user to check the entire filesystem for files that meet the checksum criteria so that symbolic links can once more be re-established.
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Dec 10, 2010
Been at this all morning and fail on every attempt.
I have a file called sitemapindex.xml
Its contents just are names of the other sitemaps. Google gets pissy because it isn't in a http:// format.
So, I need "<loc>sitemap-c1mediawiki-............</loc>" to be replaced with "<loc>http://domain.tld/sitemap-c1mediawiki-............</loc>".
Here's the expression I've been trying:
find /path/to/site/sitemap-index-c1mediawiki* -type f | xargs sed -i 's/[<loc>sitemap]/[<loc>http://domain.tld/]/'
It fails.
I've tried with and without brackets.
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Jul 8, 2010
I had a set of link titles and wanted to get HTML tags for them. Actually I wanted to get from
[code]...
It's PHP based (running on linux of course . I'm sure same thing is possible by some awk/sed magic, but i wanted somehting more visual.
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Jul 9, 2010
I have a simple C program which uses ncurses library and I am having linker issues and couldn't get the program to link.
[Code]...
So I think the ncurses libraries are in place but gcc still couldn't link. I am totally stumped.
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Apr 25, 2009
Can anyone tell me how to change the LINK text to yellow or white or red??
The page is ( http://www.multidistro.com ) code...
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Dec 23, 2008
I had return a driver for receiving and transmitting packets for the ethernet controller named rtl8139.I want to test it by writing an application program (socket programming).But I am unable to link it with the interface. Can anyone help in this regard?
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Oct 4, 2010
Using: Open SUSE 11.0 64 bit, KDE 3.5.9 (release 49) and KDevelop 3.5.1. Problem: A singleton was created in subproject A, and so an object file is created in subproject A. In subproject B, I want to use that object file. We have not been able to find a way to link that object file created in subproject A with subproject B. Also, the subprojects are in different directories. We created a symbolic link to the ".h" and ".cpp" files in directory A. And the project compiles and links just fine after adding the symbolic link to the header and cpp files in subproject B. My concern is, that two objects of that singleton will be created. The whole idea of making a singleton is so that there is only one instance at a time.
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Jun 2, 2011
I have a collection of redirect links I need to grab the final domain from (indicated after "->"):
[url]
[url]
I'm thinking PHP/cURL is the way to do it. I've searched the net but failed to find a solution that works for all redirection links.
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Apr 28, 2010
I'd like to get path of one library to link it dynamically in my program. Probobly the best way would be to add macro to my configure.ac file.
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Sep 23, 2010
I wrote a program to create a link list
Code:
#include <stdio.h>
#include <stdlib.h>
struct node {
[Code].....
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Jan 27, 2010
I'm trying to link 'aubio' (a lib) and its failing on one of ts dep's with this error.
Code:
$ make
Making all in src
make[1]: Entering directory `/home/John/Externals/aubio/aubio-0.3.2/src'
make all-am
[code]....
"Warning: This system can not link to static lib archive /usr/local/lib/libff"
I've configured/make/make installed fftw and its doing just fine in the usr/lib folder, so I'm at a loss at how to fix this. Do I need to build fftw again using some kind of shared make switch? I couldn't find any referance about that.
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Aug 23, 2010
I am trying to write suitable .pro file for my application. I need real-time library. Have you some ideas how to do that? I just need the line for linking with real-time library...
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Apr 22, 2010
I am trying to compile a software using a provided sdk. I suspect that the sdk has some mismatch of the platform library, but I am not sure.
The error I got is
Code:
The libidata.so.42 is there in that folder. I guess the file might be in a big endian. Is there a way to check if the libidata.so.42 i have might be a big endian format, rather than little endian?
If my guess is incorrect, This is a c++ code on fedora x86 machine.
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