skia2/.bazelrc
Kevin Lubick 8ed49ea6e3 [infra] Add Bazel rules for codecs.
This ports the third_party BUILD.gn files related to codecs
(with a best-effort on arm/SIMD stuff). This includes:
 - libpng
 - libjpeg-turbo
 - libwebp
 - wuffs (gif)
 - libgifcodec
 - dng_sdk and piex (raw codec)

This expands the string_flag_with_values macro to allow
multiple values to be set at once. This was added in Bazel 5.0.0,
however the latest pre-release version of that has a bug [1]
which slows down compilation dramatically. This was fixed at
ToT, but not released. As a result, I started using the Bazel
6 pre-release (via bazelisk).

The macro select_multi makes writing select() where multiple
elements could be on possible/easier.

One can try compiling certain codecs by running:
bazel build :skia-core --config clang --include_codec=raw_codec --include_codec=png_codec

Suggested Review Order:
 - bazel/macros.bzl
 - bazel/common_config_settings/defs.bzl and its BUILD.bazel
   to see how the codec options are defined.
 - BUILD.bazel to see how the codec settings are used.
 - src/codec/BUILD.bazel to see the inclusion of Skia files to
   deal with specific codecs.
 - third_party/BUILD.bazel (while referencing the corresponding
   BUILD.gn files, such as third_party/libwebp/BUILD.gn)
 - Everything else.

Change-Id: I797375a35fa345d9835e7b2a2ab23371c45953c3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/469456
Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
2021-11-11 20:10:01 +00:00

14 lines
713 B
Plaintext

build:clang --crosstool_top=//toolchain:clang_suite
build:clang --compiler=clang
# Use the default Bazel C++ toolchain to build the tools used during the build.
build:clang --host_crosstool_top=@bazel_tools//tools/cpp:toolchain
# =============================================================================
# Alias to build configurations below. This makes configuring things from
# the command line easier.
build --flag_alias=fontmgr=//bazel/common_config_settings:fontmgr
build --flag_alias=gpu_backend=//bazel/common_config_settings:gpu_backend
build --flag_alias=include_codec=//bazel/common_config_settings:include_codec
build --flag_alias=with_gl_standard=//bazel/common_config_settings:with_gl_standard