.bazelrc

# Required bazel flags for building IREE.

# Disable warnings we don't care about.
build --copt=-Wno-unused-local-typedef

# C++14 standard version is required.
build --cxxopt=-std=c++14 --host_cxxopt=-std=c++14

# Default to an optimized build.
# Override via: "-c dbg" or --compilation_mode=dbg
build --compilation_mode=opt

# Disable visibility checks (works around some private deps in TensorFlow that
# are being unbundled soon anyway).
build --nocheck_visibility

# Enable some default cpu flags for x86 optimization.
build:x86opt --copt=-mavx2

# Experimental config for building on Windows via clang-cl.
# As an aspiration, it may eventually not be required to manually
# activate this config, but for now, it is a place to store the
# set of flags and tweaks needed to get the Windows build working.
# Note that this is intended to work with clang-cl, not the Visual
# Studio compiler. The following must be performed prior to invoking
# Bazel:
#   * Install Visual Studio Build Tools
#   * export USE_CLANG_CL=1
#   * export BAZEL_LLVM=C:/Users/$USER/scoop/apps/llvm/current
#     (or actual LLVM install location)
# Then one can build with:
#   bazel build --config=windows {targets...}

# Works around __TIME__ __DATE__, etc redefinitions and -std=c++14
# warnings.
build:windows --copt=-Wno-builtin-macro-redefined --host_copt=-Wno-builtin-macro-redefined
build:windows --copt=-Wno-unknown-argument --host_copt=-Wno-unknown-argument

# Disables windows headers from pulling in GDI, which does a lot of terrible
# things (such as defining the ERROR macro, which breaks the world).
build:windows --copt=-DNOGDI --host_copt=-DNOGDI

# Enables unix-style runfiles link trees (requires symlink permission).
# See: https://blogs.windows.com/windowsdeveloper/2016/12/02/symlinks-windows-10/
# Generally: Enable Developer Mode in the Developer Settings page of the
# system settings.
build:windows --experimental_enable_runfiles

###############################################################################
# Flags to make tensorflow build.
# Some of these are also of general use and fine to enable globally for windows.
build:windows --copt=/arch:AVX
# Host and target are the same in windows so don't waste time building both.
build:windows --distinct_host_configuration=false
# Avoids incompatible versions of winsock and other badness.
build:windows --copt=/DWIN32_LEAN_AND_MEAN --host_copt=/DWIN32_LEAN_AND_MEAN
# That is one way to have less warnings :(
build:windows --per_file_copt=tensorflow@-w
# This is used a lot and shouldn't be an error.
build:windows --per_file_copt=tensorflow@-Wno-microsoft-unqualified-friend
# Why are min/max macros? No one knows.
build:windows --copt=/DNOMINMAX --host_copt=/DNOMINMAX
# Yay for security warnings. Boo for non-standard.
build:windows --copt=/D_CRT_SECURE_NO_WARNINGS --host_copt=/D_CRT_SECURE_NO_WARNINGS
# TensorFlow requires the "monolithic" build mode for now on Windows.
build:windows --define framework_shared_object=false
# TODO(laurenzo): Clang uses runtime functions for 128bit math that require the
# rt library and there is not a convenient way to link it. Figure out how to
# do the following:
# See: http://clang-developers.42468.n3.nabble.com/Issue-with-Clang-on-Windows-and-compiler-rt-builtins-td4059230.html
build:windows --linkopt=/DEFAULTLIB:clang_rt.builtins-x86_64.lib
build:windows --linkopt=/DEFAULTLIB:ws2_32.lib
###############################################################################

# The user.bazelrc file is not checked in but available for local mods.
# Always keep this at the end of the file so that user flags override.
try-import %workspace%/user.bazelrc