Fetch TORCH_SRCS from `build_variables.bzl` (#36737)
Summary:
Mimic `.bzl` parsing logic from https://github.com/pytorch/FBGEMM/pull/344
Generate `libtorch_cmake_sources` by running following script:
```
def read_file(path):
with open(path) as f:
return f.read()
def get_cmake_torch_srcs():
caffe2_cmake = read_file("caffe2/CMakeLists.txt")
start = caffe2_cmake.find("set(TORCH_SRCS")
end = caffe2_cmake.find(")", start)
return caffe2_cmake[start:end+1]
def get_cmake_torch_srcs_list():
caffe2_torch_srcs = get_cmake_torch_srcs()
unfiltered_list = [x.strip() for x in get_cmake_torch_srcs().split("\n") if len(x.strip())>0]
return [x.replace("${TORCH_SRC_DIR}/","torch/") for x in unfiltered_list if 'TORCH_SRC_DIR' in x]
import imp
build_variables = imp.load_source('build_variables', 'tools/build_variables.bzl')
libtorch_core_sources = set(build_variables.libtorch_core_sources)
caffe2_torch_srcs = set(get_cmake_torch_srcs_list())
if not libtorch_core_sources.issubset(caffe2_torch_srcs):
print("libtorch_core_sources must be a subset of caffe2_torch_srcs")
print(sorted(caffe2_torch_srcs.difference(libtorch_core_sources)))
```
Move common files between `libtorch_cmake_sources` and `libtorch_extra_sources` to `libtorch_jit_core_sources`
Pull Request resolved: https://github.com/pytorch/pytorch/pull/36737
Test Plan: CI
Differential Revision: D21078753
Pulled By: malfet
fbshipit-source-id: f46ca48d48aa122188f028136c14687ff52629ed
