ofxOpenCv.h compiler error

beginners
#1

Hello.
I try to set up a project in CodeBlock with opencv libraries. To set-up the project I used the Project Generator and i added the “ofxOpenCv” and the ofxVectorGraphics"

If I try to compile the empty file but the debugger holds at #include “ofxOpenCv.h”.
I tried to add the path to the Compiler and Debugger Settings without success.

I can’t find t he file “ofxCv.h” at all on my computer. I use Ubuntu 12.04.2 LTS.

Thanks Martin

#2

After installing the ofxCV lib form https://github.com/kylemcdonald/ofxCv/wiki/Intermediate-Computer-Vision-with-openFrameworks
still I get errors:
Unable to open …/…/…/libs/openFrameworksCompiled/project/win_cb/openFrameworksLib.cbp

Investigating I can’t find the win_cb folder at all but instead I get:

…/…/…/libs/openFrameworksCompiled/project/linux64/libopenFrameworks.cbp

Do I miss something
Thanks Martin

#3

i think you are trying to open a windows project in linux, that won’t work. try to find out which addons the project uses and then generate it using the project generator

#4

I’m trying to compile an example file (exapmple-ar) of the ofcCv lib. I installed the lib with git clone …
Does git clone works also for Windows?

This is what I did:
cd addons/
git clone https://github.com/kylemcdonald/ofxCv.git

The addons.make file of the above project has two entries:
ofxCv
ofxOpenCv

If I create a project with the ProjectGenerater and add ofxCv and ofxOpenCv
can I just copy the other files from the project into the new folder?

Thanks Martin

#5

you can point the project generator to the folder of the example and it’ll add the existing files

#6

After getting this error:

||=== M_FORUM, Debug ===|
src/testApp.h|4|error: #include expects “FILENAME” or |
||=== Build finished: 1 errors, 0 warnings ===|

I found out that in writing #include <ofxOpenCv.h> the object compiles (uff, this took long).
Has this to do with relative and absolute path?

Yesterday I installed the “of_v0.8.0_linux64_release” version but I can’t find a “bash” to run the ProjectGenerator.

I have in mind to test this code here:
http://dirtydebiandevil.wordpress.com/2013/01/21/color-tracking-in-openframework/

I’m on th way thanks Martin

#7

#include “ofxOpenCv.h” should work and indeed is more correct than <> for this case, <> is usually used for header files installed in the system rather than locally.

what do you mean you can find a bash? the install_dependencies script should compile the PG for you. You just need to double click it to open it.

#8

I had to run “make” in the openFrameworks8/apps/projectGenerator/projectGeneratorSimple folder, now it works.

The <> issue is somehow confusing. As soon as I edit the testApp.h file (paste a copied code) I have to change the “” to <> in the testApp.h, but in the main.cpp file the “” is the one I have to use.

Perhaps this is why I have problems with declared variables.
For example the following code wan’t accept the i variable even so the “int i” is declared on top of the page as global variable.

// extract of testApp.cpp
#include “testApp.h” // header of testApp.cpp the include is written “”.

int circleX, circleY, i, red, green, blue; // declaring variables.

void testApp::keyPressed(int key){

if(key == 115)
{
i– ;
}
if(key == 119)
{
i++ ;
}

}

The error I get is:
src/testApp.cpp:97:1: error: stray ‘\342’ in program

Thanks Martin

#9

this has nothing to do with the include look in line 97 of testApp.cpp there is a strange character in that line that is not valid in c++