I am trying to get Xcode 5.1.1 to find the headers of GSL. My ideal solution would be one that would allow me to access these headers on all future projects with no extra work (automagically if you will). Most instructions seem to say to add the library path under the project's Build Setting -> Search Path section, however, my project does not seem to have a library or header option there. I have also tried to use the Link Binary with Libraries under the Build Phases tab, but /usr/local/include is "invisible" and I am reluctant to move these headers from their install location (unless this is normal/acceptable). Lastly I have tried to edit the Source Trees preference to add the library path, but this does not seem to work either. I wouldn't be surprised if I was doing that last part incorrectly as I am rather confused about the proper way of doing it.
This solution works on Xcode 5.1
In the side view click on your project, there should be a tab that can either be set to "Basic" or "All," select "All." Under the subsection labeled "Linking" there should be a field called "Other Linkers" enter these flags:
-I/usr/local/include
-L/usr/local/lib
-lgsl
-lgslcblas
Related
I use 2 different GCC versions on the same CentOS machine (included in OS one and custom one), and I don't want to replace system GCC with my custom one, I use custom one to build some software only.
The problem is that Qt Creator adds /usr/include to include folders automatically, so custom GCC starts to use system C++ includes and crashes with strange error messages like error: '::memchr' has not been declared. I don't have /usr/include anywhere in my *.pro file, so it looks like Qt Creator adds them itself.
How to prohibit Qt Creator project to use some specific include patches to allow compilation on machine with 2 GCC versions? When I use Eclipse CDT on the same machine, it works excellently, because Eclipse doesn't add anything itself and only uses include directories specified by me.
You can use CXXFLAGS += -nostdinc.
This should do the following (excerpt from the manual):
Do not search the standard system directories for header files. Only the directories you have specified
with -I options (and the directory of the current file, if appropriate) are searched.
It is not elegant answer, if someone has better ideas, you are still welcome to post your answer and I'll accept it.
So, I added custom build step between qmake and make commands, and I use sed command in this custom build step to edit Makefile on the fly and remove extra includes. This solution works, however, it is ugly.
I have the Boost libraries installed on my Macbook via MacPorts and was wondering how to configure AppCode to recognize the headers.
I tried right clicking on the project -> Add Frameworks and Libraries -> Other... -> browse to /opt/local/include -> Choose but this doesn't seem to add Boost to the list.
Has anyone successfully gotten Boost to work with AppCode?
In case anyone else stumbles upon this via google:
There are three steps involved:
Right click on the project and choose Add Frameworks and Libraries, followed by Other, and browse for all of the dylibs. Since I installed boost via brew, the dylibs were located under /usr/local/Cellar/boost/1.53.0/lib/. Make sure that you select all of them, so that under the new Frameworks folder in your navigation window, a list of all of the boost libraries appear.
Right click on the project and choose Project Settings. Scroll to Search Paths and add the path to your boost include directory under Header Search Paths. For me it was located under /usr/local/Cellar/boost/1.53.0/include. Make sure that Recursive is unchecked, or you will get compile errors if you are using std!!!
Proceed to add the boost lib dir (that you browsed to in step 1) under Library Search Paths. After steps 2 & 3, your search paths may look something like:
Thats it! You are now ready to use boost headers like so:
#include <boost/lexical_cast.hpp>
Just make sure to build in 64-bit mode, since that's what the boost libraries are compiled as (might be different for the macports build).
I am adding extensions to an (another persons) existing project at my company. Now I want to import an existing library like boost to it. I am using netbeans for debugging the existing project. Now in order to import a library into netbeans usually 2 steps are followed:
Include directories
Linker-> Add Library.
However when I right click on my existing project the option of Linker->Add Library is not appearing. (Though I have included the directories as that option is there).
Can someone please guide me as to how should I add the library through linker to my existing project? My project is in C++
Assuming you are using unix/linux variants:
Directories for headers and library linking are two different things. Include directories will have the headers needed, but after compilation the actual compiled code that resides in the libraries (*.a, *.so, etc...) might also be required.
For example, if you are using pthreads, apart from the headers which you need to include, you also need libpthread.
When linking, you need to provide the flag for linking with pthread i.e: -lpthread
You can search using find or locate on a unix system to find the libraries. In my case, its in
/usr/lib/libpthread.so
Therefore,
gcc myfile.c -lpthread -o myfile
Will link myfile.c with pthread library
Whereas,
gcc -L/usr/local/lib/
Tells gcc to look under /usr/local/lib to search for the library (not the header!).
Telling netbeans where the headers are, isn't enough, it will probably give you linking errors. Telling netbeans where the libraries are, may be enough, as it might use the proper flags. If that also fails, then you have to specify both the library flags and the path.
Alternatively, you may use tools like cmake, make, etc which automate this process and provide a bit more control IMO.
See Link 1
See link 2
I'm having my first fling with the Boost libraries, and I've picked a pretty girl named Regex.
I've installed the libraries (which build automatically?) on my machine, but I'm getting the above error (cannot find -lboost_regex). I'm using Code::Blocks with MinGW, and a C++0X compiler flag.
I have
Pointed the "search directories" to the installation directory
Added the -lboost_regex flag to the linker
but no luck. Can someone help me get this working?
Update
Got things running now. I've added some further notes in an answer below, for newcomers to this problem.
(Also, changed the title of the question since it turned out to be a broader issue than when I started out.)
Here's some links and tips that can help a newcomer, from my first build experience. I built the libraries directly from the zip file. I built on MinGW and I used CodeBlocks for the IDE.
Download Boost zip, unzip somewhere (I'll call that place $boostdir)
Pretty large when unzipped, > 300MB
Add MinGW bin to PATH var
When Boost builds, it will need access to MinGW executables
Build b2.exe and bjam.exe
The documentation for Windows blithely assumes MSVC compiler is available.
If it is, you can apparently use the bootstrap.bat like the docs say.
If it's not (like mine), you'll have to build the exe files yourself, in steps 4 and 5.
In CMD, navigate to $boostdir/tools/build/v2/engine
Run build.bat mingw (will build b2.exe and bjam.exe)
Some aging basic documentation on that
Now you've got b2 and bjam custom-built according to your system spec. Navigate back up to $boostdir and get ready to start building the libraries.
Boost will make a new bin.v2 directory in the current directory.
All the libs will go in bin.v2.
This is an "intermediate" directory, for some reason
Nothing to do in this step, just some extra info :)
Run b2 toolset=gcc --build-type=complete
This takes a long time, in the neighborhood of 1 - 2 hours.
You'll know if it's working. If you think something's wrong, it's not working.
The build can use various flags
Now you're all built. Time to set up CodeBlocks.
Point your compiler to the header files
Right click your project -> Build Options -> Search Directories tab -> Compiler tab -> add $boostdir address
Boost has built a DLL for the library you want according to your current system spec. Look in the stage\lib\ directory of $boostdir
This DLL will be used later in the linker, so don't close its explorer window yet
Mine was in C:\Program Files\Boost_1_52\stage\lib\libboost_regex-mgw44-1_52.dll
I think the documentation had a smart way to do this but I haven't tried it yet
The "intermediate" directory from step #6 can be deleted now that the build is finished
Point your linker to the directory of that DLL
Right click your project -> Build Options -> Search Directories tab -> Linker tab -> add
that directory address (blah\blah\blah\stage\lib\)
Add that DLL flag to your linker settings
Mine was -lboost_regex-mgw44-1_52
Deep breath, prayers to your god, and fire up a test.
Further docs that may either help or confuse:
The Code::Blocks website has a version of this that I didn't find until I neared the end of my search. It was fairly helpful but had a few weird things. This post also is helpful.
Good luck!
I'm not sure what you mean by which build automatically. Most of the Boost libraries are header-only, but a few, such as regex, need to be compiled to a shared / static library. The compilation step is not automatic, you need to invoke the Boost build system (bjam) to do this. Of course, there are sources (BoostPro for instance) that distribute pre-built Boost binaries for various platforms.
Once that's done, you need to add the path where the libraries are present to the linker's search path. For MinGW, this option is -L"path/to/library". Boost does have directives to allow auto-linking of the required libraries, and this seems to work pretty well with MSVC, but I've never gotten it to work with MinGW. So you must also list the libraries to be linked explicitly. The Boost libraries include target and version information in the file name by default, so a typical linker command line option will look like -lboost_regex-mgw47-mt-1_51 for MinGW gcc 4.7 and Boost 1.51
Is it possible to customize or specify the command for compiling in codeblocks or any of the other IDEs like NetBeans and Eclipse C++?
I'm asking this because I tried all those IDEs and no one can find the libraries even though it's there listed in the code assistance list (NetBeans 7.2). However, when I compile it in shell in Ubuntu 12.04 LTS, the libraries are located and the program can be compiled.
I use one of the commands:
gcc -lGL -lglut filetoCompile.cpp -o compiled.sh
g++ -lGL -lglut filetoCompile.cpp -o compiled.sh
to compile. I'm trying to use glut for open GL stuff and this is the library it can't find. I assume it may be the same for other third party libraries I may add in the future that's why I really need to get this fixed that's why my plan is to have the IDE use that command instead because it might work.
What's also odd is that my /usr/local/lib directory only contains 2 folders: python 2.7 and python 3.2. I'm not sure if this has an effect but is this normal? Shouldn't the libraries somehow be found here and the headers are in /usr/local/include?
The header files are located in /usr/include. Is this the correct location?
Generally speaking, yes this is possible.
In Eclipse CDT, you can set the directory where the header files are in this window:
Right click on project name; Properties; C/C++ General; Paths and symbols; Includes;
In window you must add all directories that contain header files for the functions/classes you want auto completion for. For example, my configuration is:
/usr/include/c++/4.4.5
/usr/local/include
/usr/lib/gcc/i486-linux-gnu/4.4.5/include
to find which folder contain an header file you can use the find or locate command, and set the IDE properly.