I'm trying to compile this code on Ubuntu 12.04 (can't upgrade) as a base for another program I need to do, however, I think I've spent too much time in the PHP/Python world and this error is driving me insane. I've looked everywhere, and found this question on SO with almost the same error, but unfortunately no answers.
I've installed OpenKinect/libfreenect from source per the instructions on this page, also installed libpng1.2 and ran the freenect examples just fine. I've also tried moving the CFLAGS and LDFLAGS around but no luck yet.
Relevant info:
$ make
cc -O3 -I/usr/local/include/libfreenect -c kinect.c
cc -O3 -I/usr/local/include/libfreenect -c image.c
cc -O3 -I/usr/local/include/libfreenect -c buffer.c
cc -O3 -I/usr/local/include/libfreenect -lpng -lfreenect -o kinect-depth-ascii kinect.o image.o buffer.o kinect-depth-ascii.c
/tmp/ccsUHika.o: In function `draw_depth_image':
kinect-depth-ascii.c:(.text+0x131): undefined reference to `Image_get_pixel'
kinect.o: In function `kinect_capture_depth_image':
kinect.c:(.text+0x55): undefined reference to `Image_set_pixel'
kinect.o: In function `kinect_initialize':
kinect.c:(.text+0x15c): undefined reference to `freenect_init'
kinect.c:(.text+0x179): undefined reference to `freenect_select_subdevices'
kinect.c:(.text+0x186): undefined reference to `freenect_num_devices'
kinect.c:(.text+0x1ab): undefined reference to `freenect_open_device'
kinect.c:(.text+0x1e6): undefined reference to `freenect_set_led'
kinect.c:(.text+0x1fb): undefined reference to `freenect_set_depth_callback'
kinect.c:(.text+0x217): undefined reference to `freenect_find_depth_mode'
kinect.c:(.text+0x257): undefined reference to `freenect_set_depth_mode'
kinect.c:(.text+0x264): undefined reference to `freenect_start_depth'
kinect.c:(.text+0x2de): undefined reference to `freenect_shutdown'
kinect.o: In function `kinect_process_events':
kinect.c:(.text+0x3a3): undefined reference to `freenect_process_events'
kinect.o: In function `kinect_shutdown':
kinect.c:(.text+0x3f7): undefined reference to `freenect_stop_depth'
kinect.c:(.text+0x40c): undefined reference to `freenect_set_led'
kinect.c:(.text+0x419): undefined reference to `freenect_close_device'
kinect.c:(.text+0x426): undefined reference to `freenect_shutdown'
image.o: In function `Image_get_png_write_data':
image.c:(.text+0x2b): undefined reference to `png_get_io_ptr'
image.o: In function `Image_write_png_internal':
image.c:(.text+0x119): undefined reference to `png_create_write_struct'
image.c:(.text+0x12d): undefined reference to `png_create_info_struct'
image.c:(.text+0x16d): undefined reference to `png_init_io'
image.c:(.text+0x1be): undefined reference to `png_set_IHDR'
image.c:(.text+0x1d2): undefined reference to `png_write_info'
image.c:(.text+0x260): undefined reference to `png_write_end'
image.c:(.text+0x270): undefined reference to `png_destroy_info_struct'
image.c:(.text+0x285): undefined reference to `png_destroy_write_struct'
image.c:(.text+0x2a8): undefined reference to `png_write_row'
image.c:(.text+0x2e4): undefined reference to `png_set_write_fn'
image.c:(.text+0x2fd): undefined reference to `png_destroy_info_struct'
image.c:(.text+0x30f): undefined reference to `png_destroy_write_struct'
image.c:(.text+0x32d): undefined reference to `png_destroy_write_struct'
image.o: In function `Image_downsample':
image.c:(.text+0x490): undefined reference to `lround'
image.c:(.text+0x4c9): undefined reference to `lround'
collect2: ld devolvió el estado de salida 1
make: *** [kinect-depth-ascii] Error 1
$ cc --version
cc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
Copyright (C) 2011 Free Software Foundation, Inc.
Esto es software libre; vea el código para las condiciones de copia. NO hay
garantía; ni siquiera para MERCANTIBILIDAD o IDONEIDAD PARA UN PROPÓSITO EN
PARTICULAR
$ ls -l /usr/local/lib/
total 164
drwxr-xr-x 2 root root 4096 jul 6 13:36 fakenect
-rw-r--r-- 1 root root 64566 jul 6 13:36 libfreenect.a
lrwxrwxrwx 1 root root 18 jul 6 13:36 libfreenect.so -> libfreenect.so.0.4
lrwxrwxrwx 1 root root 20 jul 6 13:36 libfreenect.so.0.4 -> libfreenect.so.0.4.3
-rw-r--r-- 1 root root 53522 jul 6 13:36 libfreenect.so.0.4.3
-rw-r--r-- 1 root root 9132 jul 6 13:36 libfreenect_sync.a
lrwxrwxrwx 1 root root 23 jul 6 13:36 libfreenect_sync.so -> libfreenect_sync.so.0.4
lrwxrwxrwx 1 root root 25 jul 6 13:36 libfreenect_sync.so.0.4 -> libfreenect_sync.so.0.4.3
-rw-r--r-- 1 root root 17474 jul 6 13:36 libfreenect_sync.so.0.4.3
drwxr-xr-x 2 root root 4096 jul 6 13:36 pkgconfig
drwxrwsr-x 4 root staff 4096 jun 28 21:14 python2.7
$ ls -l /usr/local/include/libfreenect
total 48
-rw-r--r-- 1 root root 27024 jul 6 13:35 libfreenect.h
-rw-r--r-- 1 root root 9380 jul 6 13:35 libfreenect.hpp
-rw-r--r-- 1 root root 3587 jul 6 13:35 libfreenect_registration.h
-rw-r--r-- 1 root root 3995 jul 6 13:35 libfreenect_sync.h
Makefile (the same as the Github repo):
all: kinect-depth-ascii kinect-depth-png
CFLAGS=-O3 -I/usr/local/include/libfreenect
LDFLAGS=-lpng -lfreenect
kinect-depth-ascii: kinect.o image.o buffer.o kinect-depth-ascii.c
cc $(CFLAGS) $(LDFLAGS) -o $@ $^
kinect-depth-png: kinect.o image.o buffer.o kinect-depth-png.c
cc $(CFLAGS) $(LDFLAGS) -o $@ $^
kinect.o: kinect.h kinect.c
cc $(CFLAGS) -c kinect.c
image.o: image.h image.c
cc $(CFLAGS) -c image.c
buffer.o: buffer.h buffer.c
cc $(CFLAGS) -c buffer.c
clean:
rm -f *.o kinect-depth-ascii kinect-depth-png
Can anyone please shed some light as to what is wrong here? (Additional question: What does the "$^" at the end of kinect-depth-ascii and kinect-depth-png lines do?)
Thank you very much in advance.
