I am new to C++ and NetBeans and I am trying to build a Dynamic Library project using it :). I want to build a plugin which uses source files located in different directories, and would like to keep them separately (as its a plugin ;)). I already tried to include the directory where the source files are located using Properties > Build > C++ Compiler > Include Directories, but it still gives errors in referencing to these files. These errors say the following:
"Cannot find include file "vtkPolyDataAlgorithm.h" "
Can anyone help me on this? I assume its a bit of a basic-basic-basic question, but I'm trying to learn autodidactically as a geologist from background, so you might see my problem :). I really hope you can help me out! Thanks :)
Ellen
While your way is the default way to add directories which contain additional headers (e.g. for libraries), you can add further Source-directories using Properties -> General -> Source Folders (-> Add).
It's also possible to add files (cpp / h) to your project, without setting a directory:
Right click on your project -> Add existing item ... or Add existing items from folders ...
But you have to care about your paths, you may have to browse to the headers using #include "../headers/here/example.h.
Related
I've been asked to make a small mod to some software that was written back in the mid naughties on IAR Embedded Workbench v3.3
I have had the original source files copied from an old machine to one I have been given for the task.
For the moment I am simply trying to get the software compiling. It took me a while to realise, or at least I thought I'd realised, that the reason it couldn't open various header files was that, incredibly, all the include paths were absolute, not relative.
So, I changed all the paths to be $PROJ_DIR$ relative, but then started to get different files that couldn't be opened. Then realised that the machine they gave me just happened to have a very similar directory structure to the original machine used and, amazingly, had quite a few of the same files in the directory structure of this machine I'm using as was on the machine used to compile the code originally.
I then thought, OK, I'll just check I have got my relative paths correct by choosing one of the header files it was complaining about not finding and putting, in the Preprocessor tab, an absolute path to the directory on this machine I'm using that contained the header file it wanted. However, that still wouldn't find the header file!
Finally, I put an absolute path in the c file to point to the desired header file.
#include "C:\absolute__Path\stdtyp.h"
And it compiled.
To confirm:
Putting C:\absolute__Path
in the Project | Options | C/C++ compiler | Preprocessor tab will not work if I just have:
#include "stdtyp.h"
in the c file.
I have used IAR in the past - not that much - but I have used it and I was sure that's where you set your include directories. So, am I wrong, or can there be something else that is overriding that path in the Preprocessor tab as described above?
Edit: I'm not wrong, after having slept on it, I decided to create a new project with random directories, subdirectories and header files. Sure enough, if I set and remove $PROJ_DIR$ referenced paths in the preprocessor tab, the new project compiles, then doesn't. So, there must be something, presumably in the ewp file that is borking it.
It turns out you can override the paths on an individual file by file basis. So, the rogue files had the paths overridden and had absolute paths.
Right click on the file in EW and select Options.
That then for most file shows a load of greyed out boxes. What I'd failed to do was thoroughly check all files. The few I'd randomly checked were greyed out, but some files had their properties overridden here with different (and absolute) paths put there.
At least now the project can be easily copied between machines having used relative paths.
I'm using Xcode (with C++) and my project layout (in the file system, not in Xcode) looks like this:
SubfolderA
-file_A_1, file_A_2
SubfolderB
-file_B_1, file_B_2
Right now I've set up this structure in Xcode via groups. And so, when I want to include file_A_2 in file_B_1, I write #include "file_A_2" in file_B_1.
Is there some way to make an inclusion look like #include "/SubfolderA/file_A_2", so that I can easily see to what directory/subfolder an included file belongs?
One way to see what's going on is to look at the Build Log and expand the line for compiling sourcefile.m. Look at the -I options being passed to the compiler.
If it's not to your liking you can add the source tree in the Build Settings > Header Search Paths to include $(ProjectDir)/srcroot and make it recursive, which saves you from adding each sub-folder individually.
In my experience this has never been necessary, however, as far as I can remember.
As far as the Xcode folders are concerned, if the top-level source folder is added then all sub-folders are automatically added when you add them to the filesystem, saving the hassle of keeping them in sync. You might need to add the top-level folder under the Source Files group for this to work, however.
Surprisingly, in Xcode's Build Settings I've added to User Header Search Paths non-recursive path to my project. This solved my problem.
I ended up here when I was having an issue with XCode while trying to include a header in a group by doing
#include "MyGroup/MyHeader.h"
Turns out the project structure and the file system weren't in sync, so I just had to remove my group from the project, put it in the correct place in Finder, then drag and drop it back into the project in the correct place and it worked for me.
I'm not sure if this is necessary or not, but I also have already set up my app's working directory because I am doing some game programming and need to be able to load in .png and make textures.
I'm trying to change the include paths from relative path to fixed path. Is there a way to do it in a bulk? Or do I need to manually edit one by one?
I'm currently going to
C/C++ Build -> Settings -> ** Compiler -> Includes
And have to manually edit the path from something like:
../../../../../platform/hal/rtc
../../../../../platform/hal/sai
../../../../../platform/hal/sim
To
"C:\Freescale\KSDK_1.0.0/platform/hal/rtc"
"C:\Freescale\KSDK_1.0.0/platform/hal/sai"
"C:\Freescale\KSDK_1.0.0\platform\hal\sim\"
I wonder if there's a way to export this to an XML file or something and then import it.
Thank you!
I've had this issue before in a workspace that contains more than 40+ similar C++ projects. The way I deal with it is to write a shell script that modifies the .cproject files on disk:
Use find to recursively find the .cproject files that I need to modify.
Use sed to search and replace inside each file using sed s/find-expression/replace-expression/g < .cproject > .cproject.tmp.
When I'm happy that the .cproject.tmp files contain the correct replacements then I add mv .cproject.tmp .cproject to the script to finalise the operation.
Since you're using Windows you'll need to get your projects into an environment where shell-scripting is easy - cygwin or msys are both powerful enough to do this.
In C/C++ General -> Paths and Symbols -> Includes ... (then possibly your language), there is an export settings button which has a checkbox which includes the includes path. To import these settings into another project, you would use the import settings button when you open the properties to the same place in another project.
I have a lot of classes in my project which means a lot of files too. I want to put everything in subfolders so it's a grouped together and a bit more clear.
There is already a folder names scr where all my cpp and header files are in but I want to create a folder named 'products' and put all the product-related files in there.
But when I do so, I get this error (after pressing build) that one of my classes can't be build. It says:
make: * [scr/Producten/AudioKaart.o] Error 1 KassaSysteem C/C++
Problem recipe for target `scr/Producten/AudioKaart.o'
failed subdir.mk /KassaSysteem/Debug/scr/Producten line 30 C/C++
Problem
What's the right way to put files in subfolders? Do I need to change the includes? Or do something more than just dragging and dropping them into the folder?
If you put headers in your Producten directory, you need to include this directory in your project settings. Another way is to include your header by specifying the sub-directory, something like
#include "Producten/xxx.h"
Eclipse uses directories for project folders, so you need to adjust all includes as well.
I'm a complete beginner with Code::Blocks and SQLite, and have some basic knowledge with C++. I'm currently using Ubuntu 11.04.
I have downloaded SQLite Amalgamation here. When I extracted the zip file, there are four files inside: shell.c, sqlite3.c, sqlite3.h, and sqlite3ext.h. If I simply add those files to a (for example) a console project, it gives out an error: the .c's of the downloaded sqlite each have their own main function. Removing those from the project, the errors are gone and I can call #include "sqlite3.h". I am trying to follow this, and tried the first two lines of code from here and it gives out an error: undefined reference to sqlite3_open.
I think adding those .h's directly to a console project isn't the right way to use it, though I'm not sure.
How exactly should I use those? What should I do to use those for my C++ program?
Any help is greatly appreciated. :)
EDIT: I also tried to create a .a file of those sqlite files by following this. When I try it, it gives out an error: cannot find -lsqlite.
I got it! Though there was something that I did that caused problems.. I forget to remove the .a file that I added at Project > Build Options > Linker Settings earlier, which caused problems..
Here are the steps I made to add SQLite: (for those that might have the same problems)
Copy the files extracted from the SQLite Amalgamation to the directory of the project.
Add the sqlite files (Project > Add Files) EXCEPT the shell.c (it is the one that causes the multiple function error)
Compile it (Yes, a simple Ctrl+f9).
here are errors: undefined reference to pthread_mutexattr..... These are fixed by going to Project > Build Options > Highlight 'the Project Name' above Debug and Release at the top left corner > Linker settings, and adding "-lpthread" (without quotes) to Other linker options:.
Some more errors are found: undefined reference to dlopen, dlerror..... Add '"-ldl"' just below the '"-lpthread"' added earlier.
DONE :)
I didn't find a complete answer for Windows as a beginner, and at the beginning it is very painful to understand everything. So here's what worked for me.
Download the SQlite Amalgamation file.
Open Code::Blocks -> New Project -> Choose static library
Unzip the file you have downloaded and copy the folder/contents to your new project directory. Add all the files to the project and build the project.
You will find a ProjectName.a file in the bin/Debug or bin/Release directory. Copy that file to your actual SQlite project directory.
Go to Code::Blocks Project->Build options. Select 'Linker Settings' tab and add the path to the .a file. Don't close it yet!!!
In 'Search Directories' tab, select the 'Compiler' tab, add the path to the Amalgamation header files, or copy the header files to your directory (you can add the header files to your project) and in the 'Linker' tab add the path to the .a file
Now Compile!!! Hopefully this will run
That is all, I wish it'll save some searching time for another noob
You will need to compile the sqlite code first, and then just #include "sqlite3.h" into your project where you need it.
UPD:
Try this:
Download this package from sqlite site and extract it somewhere, say, into a folder called "sqlite". Open terminal, and go into this folder. Inside of it, run
./configure
sudo make
sudo make install
and see what happens. It should build itself automatically. Consult the README file that is inside the archive too.