I am using Mac OS X 10.8 with Xcode. I have installed the jansson library, with the following commands:
./configure
make
make check
sudo make install
Everything went fine and the library installed correctly. I have created a smple .c file with a text editor and tried to include the <jansson.h> file. I builded everything and it gave no errors, meaning that the library is installed on my system.
Now, Xcode doesn't find the library at all, saying that <jansson.h> is not found. I have tried to restart my Mac, but nothing happens. If anyone knows a possible solution, I will be grateful. Thanks!
I resolved the issue, by going under Build phases, and searching for HEADER_SEARCH_PATH. Then I changed the search path label with /usr/local/include, where the library was installed.
Related
I just downloaded and installed Mingw. I also setup the system environment variables for C:\MinGW\bin and C:\MinGW\msys\1.0\bin. I wanted to test to see if I had installed it correctly (it seemed to be since running gcc --version worked), so I wrote hellow world in c and tried to compile with gcc main.c -o hello_world.exe. However I got the error:
"The code execution cannot proceed because libewinpthread-1.dll" was not found. Reinstalling the program may fix this problem."
I have tired reinstalling it and restarting my computer. I have also tried to see if this problem has occurred to others, and while there are a few places it is mentioned, I can't seem to find a solution mentioned. I have thought about trying to download the dll separately, but if I remember correctly, downloading dlls is a big no no.
Awhile ago I installed mingw though chocolatey and it seemed to be working. I have deleted that download from my computer and removed the paths, since I wanted to try to install it the normal way. Could this be part of the error?
Any ideas what the issue could be? Thanks!
You have built an .exe file that depends on libwinpthread-1.dll.
Solutions to make sure the .exe can run:
Add the MinGW bin path to your PATH so libwinpthread-1.dll - this would only fix it for your own system so I wouldn't recommend this if you want to use the .exe file on other systems.
Copy libwinpthread-1.dll from MinGW in the same folder as your .exe file. This is generally needed for any shared dependancy library your .exe is linked against.
Build a static .exe (--static linker flag) to avoid the shared (.dll) dependancy.
Yes! probably is an error, cause MinGW is a bit stinky when it comes to DLLs
Here are some things you have to check:
Make sure the variable helding the location of MinGW is named "path"
and its pointing at: C:\MinGW64\bin
I'm trying to use the C client library of http://sphinxsearch.com in my project. It compiles fine on ubuntu using libsphinxclient-dev package
However when I try to compile it on debian sid, it complains that the header sphinxclient.h is missing, and I can't find any package providing this header.
Is there any "clean" way to solve this problem ?
Seems libsphinxclient is not included in Debian upstream and there isn't a separate package.
You can grab the deb packages from Sphinx website,libsphinxclient is installed in /usr/share/sphinxsearch/api/libsphinxclient (you might need to copy the header to include folder or add this folder to path).
I've downloaded the portaudio codebase and compiled it fully with source, and installed it to my system with these commands:
./configure
make
sudo make install
But XCode is complaining to me, even when I put -lportaudio in the Other Linker Flags for the project settings.
I've researched this problem and tried whatever I could find on Stack Overflow, but there was no decisive answer that would work for me. Any advice on how to fix this?
I'm using an older version of XCode and haven't bothered looking at how the interface might have changed in the newer versions, but this is generally solved for me by modifying the User Search Paths under your project settings. Look at the screenshot, add /usr/local/include to Header Search Paths and make Always Search User Paths "Yes." That should do the trick
Edit:
One more thing to note, this is only /usr/local/include because that's the default install directory for the portaudio.h file in the portaudio build (as it is with many libraries).
If you have a different prefix other than /usr/local/include, add that instead.
I'm new to OSX and XCode and I'm trying to statically link to a C app. I downloaded and installed libconfig and I link to the installed libconfig.a. It works great on my machine but when I run my binary on another machine I get an error that says libconfig.dylib can't be found. Naturally, I don't want to have to install libconfig everywhere I use my app.
I've scoured through the xcode build settings and the only reference I see is the one for libconfig.a. What am I doing wrong?
I got this to work. This seems to be a libconfig build issue, maybe expected behavior but it surprised me. I was linking to libconfig.a, but it appears that libconfig.a was linking to libconfig.dylib. I reconfigure libconfig and reinstalled it.
./configure --disable-shared
make clean
make
make install
I am a begineer trying to get code in C. I am working on a Mac and using xcode. My only past experience has been with java using eclipse and everything was pretty straight forward. I have almost no experience with terminal.
I am required to learn a bit of C for a project I will be working on and the learning of syntax is coming along okay, but I am at a point where I need to include some libraries in my c program. Specifically I am attempting to make plots with gnuplots.
I have downloaded gnuplot-4.6.3 from their repository and I do not even know how to install the files. I have been looking around and have tried using terminal to use the ./configure command when I am in the gnuplot-4.6.3 directory. But I really don't know what I am doing so I don't even know where to go next or what to do next.
Sorry if this is so trivial, I honestly just have never done this before and I cannot find a good tutorial on what to do.
Thanks for any help you can offer.
I would recommend using MacPorts for installing third-party tools and libraries. It knows the dependencies required and will install them as part of the installation.
Download it from macports.org.
Install it, and allow it to modify your ~/.profile so that /opt/local/bin is in your $PATH (any issue then just do export PATH=/opt/local/bin:$PATH from the command line).
sudo port selfupdate
sudo port install gnuplot
Now that will install the library into /opt/local/lib with the include files in /opt/local/include, so now just add that library to your Xcode project. Select the target and in the Build Phases tab open up the Link Binary With Libraries and press the + button and select Add Other. Now find /opt/local/lib/libgnuplot.a (I am assuming that's what it's called; I don't have it installed my self):
Now add /opt/local/include to your Header Search Paths so the compiler can find the gnuplot header files. Select the target and in Build Setting type in "header search" in the search box. Now double-click on the Header Search Path in the target column (or the project column to the right) and add /opt/local/include:
It's fine! You're learning then! Keep up! When I hit this kind of problem you may want to learn about the basis for linux gcc/g++ compilation and linking processes. Then you should learn Cmake and Automake, which are basically packages to configure projects before compiling building.
A typical (good) project in Unix systems build with commands
./configure
make
sudo make install
or
cmake CMakelists.txt
make all
sudo make install
That's what you need to do after downloading a source tarball online to install unix programs.
Now since you are using Mac, there are so-called package installers, one which is macports and homebrew. I personally suggest homebrew than macports here (I've tried both, although macports still outnumber homebrew with the number of repos, homebrew has the newest support, especially when upgrading to a new OS). So to install homebrew you can do
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Execute that in your terminal (see http://brew.sh/) for more information.
Then you could simply install GNUplot by
brew install gnuplot