-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed

[monacv]

[3645:3637 0:2010] 07:37:41 Tue Jan 12 [mona@goku:pts/0 +1] ~/mesh-fusion/libfusiongpu/build
$ cmake ..
CMake Warning (dev) in CMakeLists.txt:
  No project() command is present.  The top-level CMakeLists.txt file must
  contain a literal, direct call to the project() command.  Add a line of
  code such as

    project(ProjectName)

  near the top of the file, but after cmake_minimum_required().

  CMake is pretending there is a "project(Project)" command on the first
  line.
This warning is for project developers.  Use -Wno-dev to suppress it.

-- The C compiler identification is GNU 9.3.0
-- The CXX compiler identification is GNU 9.3.0
-- 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
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Found CUDA: /usr/local/cuda-11.2 (found suitable version "11.2", minimum required is "6.5") 
-- Configuring done
-- Generating done
-- Build files have been written to: /home/mona/mesh-fusion/libfusiongpu/build

24285/31772MB(tsdf) 
[3645:3637 0:2011] 07:37:46 Tue Jan 12 [mona@goku:pts/0 +1] ~/mesh-fusion/libfusiongpu/build
$ make
[ 33%] Building NVCC (Device) object CMakeFiles/fusion_gpu.dir/fusion_gpu_generated_fusion_zach_tvl1.cu.o
nvcc fatal   : Unsupported gpu architecture 'compute_30'
CMake Error at fusion_gpu_generated_fusion_zach_tvl1.cu.o.Release.cmake:220 (message):
  Error generating
  /home/mona/mesh-fusion/libfusiongpu/build/CMakeFiles/fusion_gpu.dir//./fusion_gpu_generated_fusion_zach_tvl1.cu.o


make[2]: *** [CMakeFiles/fusion_gpu.dir/build.make:72: CMakeFiles/fusion_gpu.dir/fusion_gpu_generated_fusion_zach_tvl1.cu.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:75: CMakeFiles/fusion_gpu.dir/all] Error 2
make: *** [Makefile:84: all] Error 2

also, documented in Stackoverflow https://stackoverflow.com/questions/65695117/usr-bin-ld-cannot-find-lpthreads-after-cmake-in-build-folder-in-ubuntu-20

[monacv]

I used the lines 77-83 of this code: https://github.com/baidu-research/warp-ctc/blob/master/CMakeLists.txt

##set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS}; -gencode=arch=compute_30,code=sm_30")
##set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS}; -gencode=arch=compute_30,code=compute_30")

IF ((CUDA_VERSION VERSION_GREATER "10.0") OR (CUDA_VERSION VERSION_EQUAL "10.0"))
    set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS} -gencode arch=compute_75,code=sm_75")
ENDIF()

IF ((CUDA_VERSION VERSION_GREATER "11.0") OR (CUDA_VERSION VERSION_EQUAL "11.0"))
    set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS} -gencode arch=compute_80,code=sm_80")
ENDIF()

and the make was successful. Apparently, it's OK to ignore the error you see at cmake ..

The reason is the code was old and was using an older version of CUDA and my CUDA version is much newer.

[davidstutz]

Thanks for the info. CUDA is always annoying with CMAKE. Problem is also that you have to match both CUDA version and the GPUs architecture. Will put that in the README as info.

[Uuiiii]

excuse me,where should I put the code?

[Gloryzq]

Excuse me, I have the same problem, I would like to ask if you have solved it? Can you tell me how to solve it?

[dqj5182]

@Uuiiii @Gloryzq

You need to change

set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS}; -gencode=arch=compute_30,code=sm_30")
set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS}; -gencode=arch=compute_30,code=compute_30")

in mesh-fusion/libfusiongpu as

##set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS}; -gencode=arch=compute_30,code=sm_30")
##set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS}; -gencode=arch=compute_30,code=compute_30")

IF ((CUDA_VERSION VERSION_GREATER "10.0") OR (CUDA_VERSION VERSION_EQUAL "10.0"))
    set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS} -gencode arch=compute_75,code=sm_75")
ENDIF()

IF ((CUDA_VERSION VERSION_GREATER "11.0") OR (CUDA_VERSION VERSION_EQUAL "11.0"))
    set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS} -gencode arch=compute_80,code=sm_80")
ENDIF()

Make sure you delete the mesh-fusion/libfusiongpu/build if you have already run the make.