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[NVCC] Bugfix nvcc command tool that relies on the compile time env #7964

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May 3, 2021
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[NVCC] Bugfix nvcc command tool that relies on the compile time env #7964

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[NVCC] Bugfix nvcc command tool that relies on the compile time env
tqchen May 2, 2021
b09e502
Update python/tvm/contrib/nvcc.py
tqchen May 2, 2021
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12 changes: 7 additions & 5 deletions python/tvm/contrib/nvcc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -89,11 +89,13 @@ def compile_cuda(code, target="ptx", arch=None, options=None, path_target=None):
cmd += ["-o", file_target]
cmd += [temp_code]

cxx_compiler_path = tvm.support.libinfo().get("TVM_CXX_COMPILER_PATH")
if cxx_compiler_path != "":
# This tells nvcc where to find the c++ compiler just in case it is not in the path.
# On Windows it is not in the path by default.
cmd += ["-ccbin", cxx_compiler_path]
# NOTE: ccbin option can be used to tell nvcc where to find the c++ compiler
# just in case it is not in the path. On Windows it is not in the path by default.
# However, we cannot we canont use TVM_CXX_COMPILER_PATH because the runtime env.
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# Because it is hard to do runtime compiler detection, we require nvcc is configured
# correctly by default.
# if cxx_compiler_path != "":
# cmd += ["-ccbin", cxx_compiler_path]

proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

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