I've downloaded Boost and am trying to get it into my XCode C++ project. (I only need filesystem, by the way.) I'm trying to follow these instructions but am finding them unclear.
Where it says to put /path/to/boost/include, I put /Documents/boost_1_57_0/boost; and where it says to put /path/to/boost/lib, I put /Documents/boost_1_57_0/libs.
(1) I'm not sure whether the above is correct. Is it?
(2) The next step tells me to add the .dylib file to the project. Where can I find that file? I've looked in almost every subfolder of boost_1_57_0 and can't find it.
(3) If the instructions on that site suck, can someone here give me better instructions?
When you install boost library through command window, it will tell you where the header files and lib files are stored. Instead of /Documents/boost_1_57_0/libs use /Documents/boost_1_57_0/stage/lib.You will find libboost_serialization.dylib in /Documents/boost_1_57_0/stage/lib. It should work for you.
Also go through this link :
https://buddypanda.com/?p=10
This has better explanation.
Related
I am relatively new to programming&C++ and just began learning about MYSQL. I have been searching for a couple of days but couldn't find a solution. I usually use Cygwin&VIM&g++ to write, compile and run codes that I write.
My goal is to retrieve data from MYSQL database that I've set up on my laptop and be able to run a simple algorithm on that data and possibly update the database.
I went into MYSQL's website and went through tutorials and found an example here. I have Boost, Connector, MYSQL server lib downloaded. When I run it, I get an error saying 'connection.h' was not found. I'm sure this is because when I compile it, g++ does not have the location of the library added to the search path that it goes through. The example has something like:
#include <cppconn/conneciton.h>
where these angled brackets means it is going to search (after the current directory) the standard search directory. I am guessing I have to add a new path (the location of where the libraries are) so that the compiler looks at that standard directory and compiles the header.
Through googling I am thinking in g++ I can use -Ldir -I to add a new search path but I don't get how to use it. Can anyone kindly explain/show me (by example) how to get over with this problem? :(
An #include issue would be solved with -I (-L is for a library if it is needed but first you have to get through the compile).
You need to figure out where the headers were installed (likely somewhere under either /usr/include or /usr/local/include/), and then add a -I with that directory, it may also be that you need to install a development package, many *nix distributions split based on runtime-build time distinctions.
And note also with the -I that the package may do something like install to /usr/include/libraryname/libname_version/libname in such a case you would only want to add -I/usr/include/libraryname/libname_version/ and then in your source file have #include
I am currently able to get mesh files of these formats however I would like to save the mesh file as .stl. I found documentation about this STL MeshIO Class, however, I can't seem to find the header to "include".
Additionally, if I follow from this, it still asks me to enter proper file extension, as in it doesn't work when I give .stl extension.
Any help or work around?
P.S. ITK-4.11.0, VS 13 Update 5, CMake - 3.8.0.
Let me know if you need the code, I don't see a requirement here.
Just adding the procedure here for someone who might be interested.
Get git executable.
In CMake go to advanced and add the path to the git executable
In Modules, add Module_IOSTL
Configure and Generate.
Build the ITK.sln file. (If using VS)
Configure and Generate your project.
Add #include "itkSTLMeshIOFactory.h"
Add itk::STLMeshIOFactory::RegisterOneFactory(); before you initialize the MeshType.
Give file extension for MeshFileWriter as .stl, and voila!
IOSTL is a remote module. When configuring ITK with CMake, you need to enable Module_IOSTL in group Module. Rebuild ITK, rebuild your program, and now you should be able to read and write .stl just the same as .vtk, .off etc. Hopefully, without any code changes.
I'm a long time VB programmer, and pretty good with c#, but I'm dumb as a brick when it comes to c++. But nonetheless, I need to build the source code for GraphicsMagick.NET, specifically for .net 2.0 if I can, to try to see if I can convert it to a fully managed dll, so that I can import it into Unity3D (who cares why I need to build it?).
Anyway, without posting the entire project here, I realize it might be hard for anyone here to know exactly what is causing my error. But perhaps someone can give an educated guess? Edit: you can download a zip of the full source from https://graphicsmagick.codeplex.com/SourceControl/latest if you want to see all the code I'm working with that is giving me this error.
This project, I assume, is supposed to compile without errors right out of the box. But it doesn't. It has this line of code in the include.h file:
# if defined(HasBZLIB)
# pragma comment(lib, "CORE_RL_bzlib_.lib")
# endif
and as a result of this evil line, I'm getting this evil error:
LNK1104 cannot open file 'CORE_RL_coders_.lib'
GraphicsMagick.NET.net20
C:\Users\A\Downloads\graphicsmagick-d\GraphicsMagick.NET.net20\LINK 1
Being the good VB programmer, I searched my project folder extensively, and that _.lib file doesn't exist. But in the process of searching online, I learned that c++ sometimes generates .lib files when you build a project. So perhaps this file was supposed to be built first, before it was linked, but for whatever reason it didn't get built first? You can see how clueless I am with c++.
Of course I commented out the line. But then it simply generates an error on the next line, which is another .lib file missing. I assume it will generate an error on every _.lib file in the entire include.h file, and there are a fair number of them.
Why is this project, which is supposed to build, missing so many .lib files? Can anyone give an educated guess why? am I probably missing some dependency that the author of this project forgot to mention in the installation instructions? Or would it be more likely that these .lib files are supposed to be created by me somehow, and I'm just not building it right?
In the downloaded release under GraphicsMagick there are two script files called CopyLibsFromDropbox.cmd and CopyLibsToDropbox.cmd, the first of which contains
echo You can download the library files here: https://www.dropbox.com/sh/a8krszzmo76fqkt/AAAc9Jho29Jk3iLrKhsBmw-Ma?dl=0
goto done
In that dropbox, you will find all the lib files you need. Download the whole thing as a .zip and extract the thing inside the the \GraphicsMagick directory. Should look like that now:
Once the libs are inside that folder you can actually compile the code. The scripts are for copying them from your local dropbox directory to this directory, if you choose to "save this inside my dropbox" at the dropbox download page above. In the end, you should see something like
3> GraphicsMagick.NET.Web -> C:\Users\Maxi\Downloads\graphicsmagick-d1b5b1b28f26cdedf3ceeb555b94a87609286740\GraphicsMagick.NET.Web\bin\ReleaseQ16\x86\GraphicsMagick.NET.Web-x86.dll
3> Codeanalysis is beeing executed...
3> Codeanalysis finished -- 0 Errors, 0 Warning(s)
========== Build: 2 successfull, 0 failed, 0 recent, 1 skipped ==========
(who cares why I need to build it?)
I do. You can already include managed dlls to Unity, and GraphicsMagick.NET already gives you a .NET dll which you should be able to use within Unity, or did you have any particular problems with that? Need some image processing functionality from that library?
Very recently, I had this idea to start using Mozilla NSS and to learn to use it, so that somewhere in the future, i can use it, or can atleast start contributing to it.
So i went to its Website and cloned it source code into a director "NSS" using mercurial
Then I used
make nss_build_all
instead of
gmake nss_build_all
Note : I don't know, if it makes a difference, gmake is just GNU Make
This make command created a dist folder outside the nss folder. So, Now my NSS folder has 3 folders nss,nspr,dist.
In .bashrc i added a line at the end
export LD_LIBRARY_PATH=/home/ayusun/workspace/NSS/dist/Linux3.5_x86_glibc_PTH_DBG.OBJ/lib
Then i went over to this Sample code, did a copy paste and saved it in my NSS Folder.
And then i tried to compile it, but it failed, stating it couldn't find iostream.h, I went over and changed the location of header files
So
<iostream.h> became <iostream>
"pk11pub.h" became "nss/lib/pk11wrap/pk11pub.h"
"keyhi.h" became "nss/lib/cryptohi/keyhi.h"
"nss.h" became "nss/lib/nss/nss.h"
I tried compiling again but this time error came, that it couldn't find "planera.h"
which is actually present in dist/*.OBJ/include/ which is a link to a file planeras.h in nspr
And so i don't know, how to include these files anymore.
I always have trouble when it comes to include 3rd party header files.
Thanks
This is an old question, but I'll answer it anyway for future reference.
The simplest way is just to use the NSS package for your operating system.
Then you can use things like nss-config --cflags, nss-config --libs, nspr-config --cflags and nspr-config --libs and add that to your CFLAGS and LDFLAGS as appropriate.
For those who do decide to compile their own NSS, I'll give the quick overview.
The NSS headers are in dist/public. Add -I/path/to/dist/public to your compiler command line. The NSPR headers are in dist/Debug/include¹ so add -I/path/to/dist/Debug/include to your comiler command line.
Now you can use #include <nspr/prio.h> and #include <nss/nss.h> and friends.
The NSS code relies on directly uncluding the NSPR headers, so you'll need to add -I/path/to/dist/Debug/include/nspr for it to find things like plarena.h. Or you could do the same and not prefix your includes like I did above. It's up to you.
Now add -L/path/to/dist/Debug/lib and -lnss3 -lnspr4 to your linker command line. You may want to also add -rpath /path/to/dist/Debug/lib for the runtime link path, or copy them to a system directory or use LD_LIBRARY_PATH.
I hope this gets you started.
¹ This actually depends on your operating system and build type. I hope you can figure out the name of the actual Debug directory in your case.
I'm just getting my feet wet in C++ using the Stanford CS 106B lectures available online. The assignments have the students use some custom libraries which are available for download online, although the installation instructions are gone.
While I can do the assignments in Xcode using a pre-built blank project which includes the relevant files and source trees set up, I also have TextMate on hand and thought I'd like to try coding with it, since I liked using it a lot for coding LaTeX. So far so good.
The first program I'm trying to run (a very simple ten-line program) contains an # include "genlib.h" in the first line. I have the genlib.h file, but can't seem to get either of the following to work:
Add the path to the relevant file in TextMate: When I try to add the path to the folder on my desktop (/previouspathinthelist:/Users/me/Desktop/C++\ libraries) where the file lives I get an error: /Users/me/Documents/c++ programs/powertab.cpp:9:20: error: genlib.h: No such file or directory even though the file is right there! (Maybe I should note here that the file to be imported and the program file are in two different folders).
Add the file to one of the other paths: I can't move the files using mv in terminal to usr/bin, usr/sbin, etc. because it says I don't have the proper permissions.
Is there something I'm doing wrong in setting my path to my folder in Documents? There aren't any spelling mistakes or anything since the path came straight from get info in the finder. I know this is a programming forum and not a TextMate support forum, but I thought it'd be good to know where people generally put these kinds of files on their systems.
Just put the file in the same directory as your other source files.
#include "filename"
searches the source directory first, whereas
#include <filename>
only searches the include file path.
The reason why /previouspathinthelist:/Users/me/Desktop/C++\ libraries doesn't work probably has to do with the space in the file name. It is quite possible that a backslash is not the right way to quote the space in the tool you're using. Many tools from the C/unix tradition deal rather badly with pathnames that contain space (even though the Unix kernel itself has no such problem); often you'll find that there is no single amount of quoting that will simultaneously satisfy all the tools and subsystems that use some setting. Better to avoid spaces in filenames entirely when you're doing development.