How can i install on cpu?

[Pathomphop]

No CUDA runtime is found, using CUDA_HOME='/usr/local/cuda'
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.9
creating build/lib.linux-x86_64-3.9/adet
copying adet/init.py -> build/lib.linux-x86_64-3.9/adet
creating build/lib.linux-x86_64-3.9/adet/utils
copying adet/utils/init.py -> build/lib.linux-x86_64-3.9/adet/utils
copying adet/utils/visualizer.py -> build/lib.linux-x86_64-3.9/adet/utils
copying adet/utils/comm.py -> build/lib.linux-x86_64-3.9/adet/utils
copying adet/utils/misc.py -> build/lib.linux-x86_64-3.9/adet/utils
creating build/lib.linux-x86_64-3.9/adet/data
copying adet/data/init.py -> build/lib.linux-x86_64-3.9/adet/data
copying adet/data/detection_utils.py -> build/lib.linux-x86_64-3.9/adet/data
copying adet/data/builtin.py -> build/lib.linux-x86_64-3.9/adet/data
copying adet/data/dataset_mapper.py -> build/lib.linux-x86_64-3.9/adet/data
copying adet/data/augmentation.py -> build/lib.linux-x86_64-3.9/adet/data
creating build/lib.linux-x86_64-3.9/adet/config
copying adet/config/init.py -> build/lib.linux-x86_64-3.9/adet/config
copying adet/config/config.py -> build/lib.linux-x86_64-3.9/adet/config
copying adet/config/defaults.py -> build/lib.linux-x86_64-3.9/adet/config
creating build/lib.linux-x86_64-3.9/adet/checkpoint
copying adet/checkpoint/adet_checkpoint.py -> build/lib.linux-x86_64-3.9/adet/checkpoint
copying adet/checkpoint/init.py -> build/lib.linux-x86_64-3.9/adet/checkpoint
creating build/lib.linux-x86_64-3.9/adet/evaluation
copying adet/evaluation/rrc_evaluation_funcs_det.py -> build/lib.linux-x86_64-3.9/adet/evaluation
copying adet/evaluation/text_eval_script.py -> build/lib.linux-x86_64-3.9/adet/evaluation
copying adet/evaluation/text_eval_script_det.py -> build/lib.linux-x86_64-3.9/adet/evaluation
copying adet/evaluation/init.py -> build/lib.linux-x86_64-3.9/adet/evaluation
copying adet/evaluation/lexicon_procesor.py -> build/lib.linux-x86_64-3.9/adet/evaluation
copying adet/evaluation/text_evaluation.py -> build/lib.linux-x86_64-3.9/adet/evaluation
copying adet/evaluation/text_evaluation_det.py -> build/lib.linux-x86_64-3.9/adet/evaluation
copying adet/evaluation/rrc_evaluation_funcs.py -> build/lib.linux-x86_64-3.9/adet/evaluation
creating build/lib.linux-x86_64-3.9/adet/modeling
copying adet/modeling/init.py -> build/lib.linux-x86_64-3.9/adet/modeling
copying adet/modeling/transformer_detector.py -> build/lib.linux-x86_64-3.9/adet/modeling
creating build/lib.linux-x86_64-3.9/adet/layers
copying adet/layers/deformable_transformer.py -> build/lib.linux-x86_64-3.9/adet/layers
copying adet/layers/ms_deform_attn.py -> build/lib.linux-x86_64-3.9/adet/layers
copying adet/layers/init.py -> build/lib.linux-x86_64-3.9/adet/layers
copying adet/layers/pos_encoding.py -> build/lib.linux-x86_64-3.9/adet/layers
creating build/lib.linux-x86_64-3.9/adet/modeling/dptext_detr
copying adet/modeling/dptext_detr/utils.py -> build/lib.linux-x86_64-3.9/adet/modeling/dptext_detr
copying adet/modeling/dptext_detr/matcher.py -> build/lib.linux-x86_64-3.9/adet/modeling/dptext_detr
copying adet/modeling/dptext_detr/init.py -> build/lib.linux-x86_64-3.9/adet/modeling/dptext_detr
copying adet/modeling/dptext_detr/models.py -> build/lib.linux-x86_64-3.9/adet/modeling/dptext_detr
copying adet/modeling/dptext_detr/losses.py -> build/lib.linux-x86_64-3.9/adet/modeling/dptext_detr
running build_ext
/usr/local/lib/python3.9/site-packages/torch/utils/cpp_extension.py:370: UserWarning: Attempted to use ninja as the BuildExtension backend but we could not find ninja.. Falling back to using the slow distutils backend.
warnings.warn(msg.format('we could not find ninja.'))
building 'adet._C' extension
creating build/temp.linux-x86_64-3.9
creating build/temp.linux-x86_64-3.9/content
creating build/temp.linux-x86_64-3.9/content/DPText-DETR
creating build/temp.linux-x86_64-3.9/content/DPText-DETR/adet
creating build/temp.linux-x86_64-3.9/content/DPText-DETR/adet/layers
creating build/temp.linux-x86_64-3.9/content/DPText-DETR/adet/layers/csrc
creating build/temp.linux-x86_64-3.9/content/DPText-DETR/adet/layers/csrc/DeformAttn
gcc -pthread -B /usr/local/compiler_compat -Wno-unused-result -Wsign-compare -DNDEBUG -fwrapv -O2 -Wall -fPIC -O2 -isystem /usr/local/include -fPIC -O2 -isystem /usr/local/include -fPIC -I/content/DPText-DETR/adet/layers/csrc -I/usr/local/lib/python3.9/site-packages/torch/include -I/usr/local/lib/python3.9/site-packages/torch/include/torch/csrc/api/include -I/usr/local/lib/python3.9/site-packages/torch/include/TH -I/usr/local/lib/python3.9/site-packages/torch/include/THC -I/usr/local/include/python3.9 -c /content/DPText-DETR/adet/layers/csrc/DeformAttn/ms_deform_attn_cpu.cpp -o build/temp.linux-x86_64-3.9/content/DPText-DETR/adet/layers/csrc/DeformAttn/ms_deform_attn_cpu.o -DTORCH_API_INCLUDE_EXTENSION_H -DPYBIND11_COMPILER_TYPE="_gcc" -DPYBIND11_STDLIB="_libstdcpp" -DPYBIND11_BUILD_ABI="_cxxabi1011" -DTORCH_EXTENSION_NAME=_C -D_GLIBCXX_USE_CXX11_ABI=0 -std=c++14
In file included from /content/DPText-DETR/adet/layers/csrc/DeformAttn/ms_deform_attn_cpu.cpp:14:
/usr/local/lib/python3.9/site-packages/torch/include/ATen/cuda/CUDAContext.h:5:10: fatal error: cuda_runtime_api.h: No such file or directory
5 | #include <cuda_runtime_api.h>
| ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
error: command '/usr/bin/gcc' failed with exit code 1