Received a make error while building warp-ctc pytorch
I am trying to build https://github.com/SeanNaren/warp-ctc.git on Google Colab, following this notebook. I am using these commands on Colab:
!git clone https://github.com/SeanNaren/warp-ctc.git;\
cd warp-ctc;\
mkdir build;\
cd build;\
cmake ..;\
make;

but I am receiving an error building it:
[-11%] Building NVCC (Device) object CMakeFiles/warpctc.dir/src/warpctc_generated_ctc_entrypoint.cu.o
/content/drive/My Drive/simple_hwr/warp-ctc/src/ctc_entrypoint.cu(1): error: this declaration has no storage class or type specifier

/content/drive/My Drive/simple_hwr/warp-ctc/src/ctc_entrypoint.cu(1): error: expected a &quot;;&quot;

2 errors detected in the compilation of &quot;/tmp/tmpxft_00000191_00000000-13_ctc_entrypoint.compute_70.cpp1.ii&quot;.
CMake Error at warpctc_generated_ctc_entrypoint.cu.o.cmake:279 (message):
  Error generating file /content/drive/My
  Drive/simple_hwr/warp-ctc/build/CMakeFiles/warpctc.dir/src/./warpctc_generated_ctc_entrypoint.cu.o


CMakeFiles/warpctc.dir/build.make:220: recipe for target 'CMakeFiles/warpctc.dir/src/warpctc_generated_ctc_entrypoint.cu.o' failed
make[2]: *** [CMakeFiles/warpctc.dir/src/warpctc_generated_ctc_entrypoint.cu.o] Error 1
CMakeFiles/Makefile2:146: recipe for target 'CMakeFiles/warpctc.dir/all' failed
make[1]: *** [CMakeFiles/warpctc.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2

How can this be resolved?

This post documents an apparent fix for this issue, which also affects the original warp-ctc repository:

[...] the ctc_entrypoint.cu file needs to be a symlink. So, go to src dir and run:
rm ctc_entrypoint.cu
ln -s ctc_entrypoint.cpp ctc_entrypoint.cu


Then, re-run make, which should resolve the issue.
