B. Bogart wrote:

Hey all,

I'm writing a gphoto2 interface object for PD.

For some reason I get segfaults when running functions in my external, the backtrace shows these are related to libimageMagick.

If I don't load Gem my code works as expected.

I've attached the code.

The openCam() causes the problem.

Does anyone see anything in there that would conflict with imageMagick?

seems to be a bug in one of the 2 libraries, unrelated to Gem, as can be demonstrated by a simple program: <code> #include <gphoto2/gphoto2-camera.h> int main(int argc, char**argv) { Camera *camera=NULL; gp_camera_new (&camera); gp_camera_init (camera, NULL); gp_camera_unref (camera); return 0; } </code>

compiling the above code against libgphoto2 % cc test.c -o test -I/usr/include/gphoto2 -I/usr/include/libexif -lc -lm -lgphoto2 -lgphoto2_port -lexif -lm -lusb will work like a charm.

however, linking it (additionally) to ImageMagick++ % cc test.c -o test -I/usr/include/gphoto2 -I/usr/include/libexif -lc -lm -lMagick++ -lWand -lMagick -lgphoto2 -lgphoto2_port -lexif -lm -lusb will segfault when calling gp_camera_init()

without debugging versions of ImageMagick++ and libgphoto2 there is little chance to detect the problem.

fmgasdr IOhannes