rocm_jax/jaxlib/jax.bzl
2022-03-03 11:11:02 -08:00

103 lines
3.7 KiB
Python

# Copyright 2021 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Bazel macros used by the JAX build."""
load("@org_tensorflow//tensorflow/core/platform/default:build_config.bzl", _pyx_library = "pyx_library")
load("@org_tensorflow//tensorflow:tensorflow.bzl", _pybind_extension = "pybind_extension")
load("@local_config_cuda//cuda:build_defs.bzl", _cuda_library = "cuda_library", _if_cuda_is_configured = "if_cuda_is_configured")
load("@local_config_rocm//rocm:build_defs.bzl", _if_rocm_is_configured = "if_rocm_is_configured", _rocm_library = "rocm_library")
load("@flatbuffers//:build_defs.bzl", _flatbuffer_cc_library = "flatbuffer_cc_library", _flatbuffer_py_library = "flatbuffer_py_library")
# Explicitly re-exports names to avoid "unused variable" warnings from .bzl
# lint tools.
cuda_library = _cuda_library
rocm_library = _rocm_library
pytype_library = native.py_library
pyx_library = _pyx_library
pybind_extension = _pybind_extension
if_cuda_is_configured = _if_cuda_is_configured
if_rocm_is_configured = _if_rocm_is_configured
flatbuffer_cc_library = _flatbuffer_cc_library
flatbuffer_py_library = _flatbuffer_py_library
def py_extension(name, srcs, copts, deps):
pybind_extension(name, srcs = srcs, copts = copts, deps = deps, module_name = name)
def windows_cc_shared_mlir_library(name, out, deps = [], srcs = []):
"""Workaround DLL building issue.
1. cc_binary with linkshared enabled cannot produce DLL with symbol
correctly exported.
2. Even if the DLL is correctly built, the resulting target cannot be
correctly consumed by other targets.
Args:
name: the name of the output target
out: the name of the output DLL filename
deps: deps
srcs: srcs
"""
# create a dummy library to get the *.def file
dummy_library_name = name + ".dummy.dll"
native.cc_binary(
name = dummy_library_name,
linkshared = 1,
linkstatic = 1,
deps = deps,
)
# .def file with all symbols, not usable
full_def_name = name + ".full.def"
native.filegroup(
name = full_def_name,
srcs = [dummy_library_name],
output_group = "def_file",
)
# filtered def_file, only the needed symbols are included
filtered_def_name = name + ".filtered.def"
filtered_def_file = out + ".def"
native.genrule(
name = filtered_def_name,
srcs = [full_def_name],
outs = [filtered_def_file],
cmd = """echo 'LIBRARY {}\nEXPORTS ' > $@ && grep '^\\W*mlir' $(location :{}) >> $@""".format(out, full_def_name),
)
# create the desired library
native.cc_binary(
name = out, # this name must be correct, it will be the filename
linkshared = 1,
deps = deps,
win_def_file = filtered_def_file,
)
# however, the created cc_library (a shared library) cannot be correctly
# consumed by other cc_*...
interface_library_file = out + ".if.lib"
native.filegroup(
name = interface_library_file,
srcs = [out],
output_group = "interface_library",
)
# but this one can be correctly consumed, this is our final product
native.cc_import(
name = name,
interface_library = interface_library_file,
shared_library = out,
)