Very simple application fails with "multiple target patterns" from Eclipse
- by Paul Lammertsma
Since I'm more comfortable using Eclipse, I thought I'd try converting my project from Visual Studio. Yesterday I tried a very simple little test. No matter what I try, make fails with "multiple target patterns". (This is similar to this unanswered question.)
I have three files:
Application.cpp:
using namespace std;
#include "Window.h"
int main() {
Window *win = new Window();
delete &win;
return 0;
}
Window.h:
#ifndef WINDOW_H_
#define WINDOW_H_
class Window {
public:
Window();
~Window();
};
#endif
Window.cpp:
#include <cv.h>
#include <highgui.h>
#include "Window.h"
const char* WINDOW_NAME = "MyApp";
Window::Window() {
cvNamedWindow(WINDOW_NAME, CV_WINDOW_AUTOSIZE);
cvResizeWindow(WINDOW_NAME, 200, 200);
cvMoveWindow(WINDOW_NAME, 0, 0);
int key = 0;
while (true) {
key = cvWaitKey(0);
if (key==27 || cvGetWindowHandle(WINDOW_NAME)==0) {
break;
}
}
}
Window::~Window() {
cvDestroyWindow(WINDOW_NAME);
}
I have added the following paths to the compiler include path (-I):
"$(OPENCV)/cv/include"
"$(OPENCV)/cxcore/include"
"$(OPENCV)/otherlibs/highgui"
I have added the following libraries to the linker (-l):
cv
cxcore
highgui
And the following library search path (-L):
"$(OPENCV)/lib/"
Eclipse, the compiler and the linker all succeed in including the headers and libraries. I am using the GNU C/C++ compiler & linker from Cygwin.
When compiling, I get the following make error:
src/Window.d:1: *** multiple target patterns. Stop.
Window.d contains:
src/Window.d src/Window.o: ../src/Window.cpp \
C:/Program\ Files/OpenCV/cv/include/cv.h \
C:/Program\ Files/OpenCV/cxcore/include/cxcore.h \
C:/Program\ Files/OpenCV/cxcore/include/cxtypes.h \
C:/Program\ Files/OpenCV/cxcore/include/cxerror.h \
C:/Program\ Files/OpenCV/cxcore/include/cvver.h \
C:/Program\ Files/OpenCV/cxcore/include/cxcore.hpp \
C:/Program\ Files/OpenCV/cv/include/cvtypes.h \
C:/Program\ Files/OpenCV/cv/include/cv.hpp \
C:/Program\ Files/OpenCV/cv/include/cvcompat.h \
C:/Program\ Files/OpenCV/otherlibs/highgui/highgui.h \
C:/Program\ Files/OpenCV/cxcore/include/cxcore.h ../src/Constants.h \
../src/Window.h
C:/Program\ Files/OpenCV/cv/include/cv.h:
C:/Program\ Files/OpenCV/cxcore/include/cxcore.h:
C:/Program\ Files/OpenCV/cxcore/include/cxtypes.h:
C:/Program\ Files/OpenCV/cxcore/include/cxerror.h:
C:/Program\ Files/OpenCV/cxcore/include/cvver.h:
C:/Program\ Files/OpenCV/cxcore/include/cxcore.hpp:
C:/Program\ Files/OpenCV/cv/include/cvtypes.h:
C:/Program\ Files/OpenCV/cv/include/cv.hpp:
C:/Program\ Files/OpenCV/cv/include/cvcompat.h:
C:/Program\ Files/OpenCV/otherlibs/highgui/highgui.h:
C:/Program\ Files/OpenCV/cxcore/include/cxcore.h:
../src/Constants.h:
../src/Window.h:
I tried removing all OpenCV headers from Window.d (from line 2 onwards), but the error remains. Also, I've updated Eclipse and OpenCV, all to no avail.
Do you have any ideas worth trying? I'm willing to try anything!
