Error while creating shared object from cpp_plugin_pcl.cpp

[ashokbugude]

I am trying to create shared object in Linux. But I face below errors.
Pls help resolve the issues

ayyon@zayyon-Lenovo-ideapad-300-15ISK:~/Downloads/PointCloudUnity-master/CppPluginPCL/build$ make
Scanning dependencies of target cpp_plugin_pcl
[ 50%] Building CXX object CMakeFiles/cpp_plugin_pcl.dir/cpp_plugin_pcl.cpp.o
/home/zayyon/Downloads/PointCloudUnity-master/CppPluginPCL/cpp_plugin_pcl.cpp:1:30: error: expected constructor, destructor, or type conversion before ‘(’ token
#define EXPORT_API __declspec(dllexport) // Visual Studio needs annotating expo
^
/home/zayyon/Downloads/PointCloudUnity-master/CppPluginPCL/cpp_plugin_pcl.cpp:74:2: note: in expansion of macro ‘EXPORT_API’
EXPORT_API bool structureTest(mycloud* myc) {
^
/home/zayyon/Downloads/PointCloudUnity-master/CppPluginPCL/cpp_plugin_pcl.cpp:1:30: error: expected constructor, destructor, or type conversion before ‘(’ token
#define EXPORT_API __declspec(dllexport) // Visual Studio needs annotating expo
^
/home/zayyon/Downloads/PointCloudUnity-master/CppPluginPCL/cpp_plugin_pcl.cpp:102:2: note: in expansion of macro ‘EXPORT_API’
EXPORT_API bool readCloud() {
^
/home/zayyon/Downloads/PointCloudUnity-master/CppPluginPCL/cpp_plugin_pcl.cpp:404:1: error: expected ‘}’ at end of input
} // end of export C block
^
CMakeFiles/cpp_plugin_pcl.dir/build.make:62: recipe for target 'CMakeFiles/cpp_plugin_pcl.dir/cpp_plugin_pcl.cpp.o' failed
make[2]: *** [CMakeFiles/cpp_plugin_pcl.dir/cpp_plugin_pcl.cpp.o] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/cpp_plugin_pcl.dir/all' failed
make[1]: *** [CMakeFiles/cpp_plugin_pcl.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

[masterchop]

mine makes fine on linux but cant find the file created, sorry new to cmake.

[mirobyrtus]

Hi, could you send me your exact steps with parameters how you build the code? miro 2017-06-06 5:50 GMT+02:00 masterchop <notifications@github.com>:

…

mine makes fine on linux but cant find the file created, sorry new to cmake. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#1 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ADgiFYQ7PCSV6qwDp6yNb2efSzZXUaZZks5sBMyAgaJpZM4JUzqp> .

[masterchop]

hi miro,
i though you would never respond, thanks!
I am a complete noob in C, learning WIP.

So here i go:
-tried on windows 1st but bad experience never worked.
-switch to linux install all dependencies
-go into the project folder and ran "cmake ."
-succesfull output and CMakesFiles created
-Folder content:
udUnity-master/CppPluginPCL/CMakeFiles$ ls 3.5.1 CMakeOutput.log feature_tests.cxx 3.6.2 CMakeTmp Makefile2 cmake.check_cache cpp_plugin_pcl.dir Makefile.cmake CMakeDirectoryInformation.cmake feature_tests.bin progress.marks CMakeError.log feature_tests.c TargetDirectories.txt
I dont know if logs clean on each run or they append but just found content in the CMakeError.log
i think it still have windows logs:

`Determining if the include file pthread.h exists failed with the following output:
Change Dir: C:/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp

Run Build Command:"C:/Program Files (x86)/MSBuild/14.0/bin/MSBuild.exe" "cmTC_aae82.vcxproj" "/p:Configuration=Debug" "/p:VisualStudioVersion=14.0"
Microsoft (R) Build Engine version 14.0.25420.1

Copyright (C) Microsoft Corporation. All rights reserved.



Build started 5/18/2017 10:43:00 AM.

Project "C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\cmTC_aae82.vcxproj" on node 1 (default targets).

PrepareForBuild:

  Creating directory "cmTC_aae82.dir\Debug\".

  Creating directory "C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\Debug\".

  Creating directory "cmTC_aae82.dir\Debug\cmTC_aae82.tlog\".

InitializeBuildStatus:

  Creating "cmTC_aae82.dir\Debug\cmTC_aae82.tlog\unsuccessfulbuild" because "AlwaysCreate" was specified.

ClCompile:

  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\CL.exe /c /Zi /W3 /WX- /Od /Ob0 /Oy- /D WIN32 /D _WINDOWS /D _DEBUG /D "CMAKE_INTDIR=\"Debug\"" /D _MBCS /Gm- /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /Fo"cmTC_aae82.dir\Debug\\" /Fd"cmTC_aae82.dir\Debug\vc140.pdb" /Gd /TC /analyze- /errorReport:queue "C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\CheckIncludeFile.c"

  Microsoft (R) C/C++ Optimizing Compiler Version 19.00.24210 for x86

  Copyright (C) Microsoft Corporation.  All rights reserved.

  

  cl /c /Zi /W3 /WX- /Od /Ob0 /Oy- /D WIN32 /D _WINDOWS /D _DEBUG /D "CMAKE_INTDIR=\"Debug\"" /D _MBCS /Gm- /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Zc:inline /Fo"cmTC_aae82.dir\Debug\\" /Fd"cmTC_aae82.dir\Debug\vc140.pdb" /Gd /TC /analyze- /errorReport:queue "C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\CheckIncludeFile.c"

  

  CheckIncludeFile.c

C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\CheckIncludeFile.c(1): fatal error C1083: Cannot open include file: 'pthread.h': No such file or directory [C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\cmTC_aae82.vcxproj]

Done Building Project "C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\cmTC_aae82.vcxproj" (default targets) -- FAILED.



Build FAILED.



"C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\cmTC_aae82.vcxproj" (default target) (1) ->

(ClCompile target) -> 

  C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\CheckIncludeFile.c(1): fatal error C1083: Cannot open include file: 'pthread.h': No such file or directory [C:\Users\Extreme Tech\Documents\PointCloudUnity-master\CppPluginPCL\CMakeFiles\CMakeTmp\cmTC_aae82.vcxproj]



    0 Warning(s)

    1 Error(s)



Time Elapsed 00:00:01.22



Determining if the pthread_create exist failed with the following output:
Change Dir: /media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_e27c2/fast"
/usr/bin/make -f CMakeFiles/cmTC_e27c2.dir/build.make CMakeFiles/cmTC_e27c2.dir/build
make[1]: Entering directory '/media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_e27c2.dir/CheckSymbolExists.c.o
/usr/bin/cc     -o CMakeFiles/cmTC_e27c2.dir/CheckSymbolExists.c.o   -c "/media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp/CheckSymbolExists.c"
Linking C executable cmTC_e27c2
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_e27c2.dir/link.txt --verbose=1
/usr/bin/cc       CMakeFiles/cmTC_e27c2.dir/CheckSymbolExists.c.o  -o cmTC_e27c2 -rdynamic 
CMakeFiles/cmTC_e27c2.dir/CheckSymbolExists.c.o: In function `main':
CheckSymbolExists.c:(.text+0x16): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_e27c2.dir/build.make:97: recipe for target 'cmTC_e27c2' failed
make[1]: *** [cmTC_e27c2] Error 1
make[1]: Leaving directory '/media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_e27c2/fast' failed
make: *** [cmTC_e27c2/fast] Error 2

File /media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <pthread.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef pthread_create
  return ((int*)(&pthread_create))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_2a904/fast"
/usr/bin/make -f CMakeFiles/cmTC_2a904.dir/build.make CMakeFiles/cmTC_2a904.dir/build
make[1]: Entering directory '/media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_2a904.dir/CheckFunctionExists.c.o
/usr/bin/cc    -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_2a904.dir/CheckFunctionExists.c.o   -c /usr/share/cmake-3.5/Modules/CheckFunctionExists.c
Linking C executable cmTC_2a904
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_2a904.dir/link.txt --verbose=1
/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create    CMakeFiles/cmTC_2a904.dir/CheckFunctionExists.c.o  -o cmTC_2a904 -rdynamic -lpthreads 
/usr/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_2a904.dir/build.make:97: recipe for target 'cmTC_2a904' failed
make[1]: *** [cmTC_2a904] Error 1
make[1]: Leaving directory '/media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_2a904/fast' failed
make: *** [cmTC_2a904/fast] Error 2

`

i have other logs if you need them. I really need this as i want to learn PCL but to new in C.
You are the only person i have seen that have manage to integrate it with unity which is my goal with Kinect v2. Find planes is just what i need and expand from there.

i appreciate any inputs that you have.

[masterchop]

Now, if i run it again this is the the Console Ouput:

`$ cmake .
-- Boost version: 1.58.0
-- Found the following Boost libraries:
-- system
-- filesystem
-- thread
-- date_time
-- iostreams
-- serialization
-- chrono
-- atomic
-- regex
-- Checking for module 'libopenni'
-- No package 'libopenni' found
-- Could NOT find ensenso (missing: ENSENSO_LIBRARY ENSENSO_INCLUDE_DIR)
** WARNING ** io features related to ensenso will be disabled
-- Could NOT find DAVIDSDK (missing: DAVIDSDK_LIBRARY DAVIDSDK_INCLUDE_DIR)
** WARNING ** io features related to davidSDK will be disabled
-- Could NOT find DSSDK (missing: _DSSDK_LIBRARIES)
** WARNING ** io features related to dssdk will be disabled
** WARNING ** io features related to pcap will be disabled
** WARNING ** io features related to png will be disabled
CMake Warning at /usr/local/share/pcl-1.8/PCLConfig.cmake:495 (find_package):
By not providing "FindVTK.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "VTK", but
CMake did not find one.

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

VTKConfig.cmake
vtk-config.cmake

Add the installation prefix of "VTK" to CMAKE_PREFIX_PATH or set "VTK_DIR"
to a directory containing one of the above files. If "VTK" provides a
separate development package or SDK, be sure it has been installed.
Call Stack (most recent call first):
/usr/local/share/pcl-1.8/PCLConfig.cmake:650 (find_VTK)
/usr/local/share/pcl-1.8/PCLConfig.cmake:831 (find_external_library)
CMakeLists.txt:5 (find_package)

** WARNING ** io features related to vtk will be disabled
** WARNING ** io features related to libusb-1.0 will be disabled
CMake Warning at /usr/local/share/pcl-1.8/PCLConfig.cmake:495 (find_package):
By not providing "FindVTK.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "VTK", but
CMake did not find one.

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

VTKConfig.cmake
vtk-config.cmake

Add the installation prefix of "VTK" to CMAKE_PREFIX_PATH or set "VTK_DIR"
to a directory containing one of the above files. If "VTK" provides a
separate development package or SDK, be sure it has been installed.
Call Stack (most recent call first):
/usr/local/share/pcl-1.8/PCLConfig.cmake:650 (find_VTK)
/usr/local/share/pcl-1.8/PCLConfig.cmake:831 (find_external_library)
CMakeLists.txt:5 (find_package)

** WARNING ** 2d features related to vtk will be disabled
-- looking for PCL_COMMON
-- looking for PCL_KDTREE
-- looking for PCL_OCTREE
-- looking for PCL_SEARCH
-- looking for PCL_SURFACE
-- looking for PCL_IO
-- looking for PCL_SAMPLE_CONSENSUS
-- looking for PCL_FILTERS
-- looking for PCL_2D
-- looking for PCL_FEATURES
-- looking for PCL_KEYPOINTS
-- looking for PCL_GEOMETRY
-- looking for PCL_ML
-- looking for PCL_SEGMENTATION
-- looking for PCL_STEREO
-- looking for PCL_REGISTRATION
-- looking for PCL_RECOGNITION
-- looking for PCL_TRACKING
-- Configuring done
-- Generating done
-- Build files have been written to: /media/chop/640004F90004D3C8/Users/Extreme Tech/Documents/PointCloudUnity-master/CppPluginPCL
`