error with luarocks install camera

[cjliux]

I am not sure whether this is caused by library imcompatibility, because I am currently using opencv3.2.

Installing https://raw.githubusercontent.com/torch/rocks/master/camera-1.1-0.rockspec...
Using https://raw.githubusercontent.com/torch/rocks/master/camera-1.1-0.rockspec... switching to 'build' mode
Cloning into 'lua---camera'...
remote: Counting objects: 29, done.
remote: Compressing objects: 100% (28/28), done.
remote: Total 29 (delta 3), reused 10 (delta 0), pack-reused 0
Receiving objects: 100% (29/29), 18.57 KiB | 0 bytes/s, done.
Resolving deltas: 100% (3/3), done.
Checking connectivity... done.
cmake -E make_directory build;
cd build;
cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="/home/cjliux/.local_install/torch/install/bin/.." -DCMAKE_INSTALL_PREFIX="/home/cjliux/.local_install/torch/install/lib/luarocks/rocks/camera/1.1-0";
make

-- The C compiler identification is GNU 5.4.0
-- The CXX compiler identification is GNU 5.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found Torch7 in /home/cjliux/.local_install/torch/install
-- Found CUDA: /usr/local/cuda-8.0 (found suitable exact version "8.0")
-- Found OpenCV: /usr/local (found version "3.2.0")
-- Try OpenMP C flag = [-fopenmp]
-- Performing Test OpenMP_FLAG_DETECTED
-- Performing Test OpenMP_FLAG_DETECTED - Success
-- Try OpenMP CXX flag = [-fopenmp]
-- Performing Test OpenMP_FLAG_DETECTED
-- Performing Test OpenMP_FLAG_DETECTED - Success
-- Found OpenMP: -fopenmp
-- OpenMP Found with compiler flag : -fopenmp
CMake Warning at video4linux/CMakeLists.txt:13 (FIND_PACKAGE):
By not providing "FindARM.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "ARM", but
CMake did not find one.

Could not find a package configuration file provided by "ARM" with any of
the following names:

ARMConfig.cmake
arm-config.cmake

Add the installation prefix of "ARM" to CMAKE_PREFIX_PATH or set "ARM_DIR"
to a directory containing one of the above files. If "ARM" provides a
separate development package or SDK, be sure it has been installed.

-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/luarocks_camera-1.1-0-4873/lua---camera/build
Scanning dependencies of target camopencv
[ 25%] Building C object opencv/CMakeFiles/camopencv.dir/opencv.c.o
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:33:8: error: unknown type name ‘CvCapture’
static CvCapture* capture[MAXIDX];
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c: In function ‘l_initCam’:
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:51:21: warning: implicit declaration of function ‘cvCaptureFromCAM’ [-Wimplicit-function-declaration]
capture[fidx] = cvCaptureFromCAM(idx);
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:51:19: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
capture[fidx] = cvCaptureFromCAM(idx);
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:58:19: warning: implicit declaration of function ‘cvQueryFrame’ [-Wimplicit-function-declaration]
frame[fidx] = cvQueryFrame ( capture[fidx] );
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:58:17: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
frame[fidx] = cvQueryFrame ( capture[fidx] );
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:64:19: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
frame[fidx] = cvQueryFrame ( capture[fidx] );
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:79:21: warning: implicit declaration of function ‘cvCreateFileCapture’ [-Wimplicit-function-declaration]
capture[fidx] = cvCreateFileCapture(file);
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:79:19: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
capture[fidx] = cvCreateFileCapture(file);
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c: In function ‘l_grabFrame’:
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:98:14: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
frame[idx] = cvQueryFrame ( capture[idx] );
^
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c: In function ‘l_releaseCam’:
/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:130:3: warning: implicit declaration of function ‘cvReleaseCapture’ [-Wimplicit-function-declaration]
cvReleaseCapture( &capture[idx] );
^
opencv/CMakeFiles/camopencv.dir/build.make:62: recipe for target 'opencv/CMakeFiles/camopencv.dir/opencv.c.o' failed
make[2]: *** [opencv/CMakeFiles/camopencv.dir/opencv.c.o] Error 1
CMakeFiles/Makefile2:85: recipe for target 'opencv/CMakeFiles/camopencv.dir/all' failed
make[1]: *** [opencv/CMakeFiles/camopencv.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

Error: Build error: Failed building.

[liesrock]

I have exactly the same issue.

[HRLurie]

I also have a similar issue. Does anybody understand a solution or workaround?

/tmp/luarocks_camera-1.1-0-4873/lua---camera/opencv/opencv.c:33:8: error: unknown type name ‘CvCapture’

[freedomsb]

Detailed solution:

1. Download lua rocks camera package:
   $ git clone https://github.com/clementfarabet/lua---camera.git
2. Edit the file /lua---camera/opencv/opencv.c:
   add one line in the beginning:
   #include "opencv2/videoio/videoio_c.h"
3. Compile the program from source:
   $ mkdir build
   $ cd build
   $ cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$(LUA_BINDIR)/.." -
   DCMAKE_INSTALL_PREFIX="$(PREFIX)"
   $ sudo make install

If you find it difficult to solve, you can do the following:
$ git clone https://github.com/freedomsb/lua_camera.git
$ cd lua_camera
$ luarocks install camera-1.1-0.rockspec
Since I modified the rockspec, you can install the camera package automatically