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Reland "[vm/wasm] Boilerplate for package:wasm"

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This is a reland of 2bafc322fd

Original change's description:
> [vm/wasm] Boilerplate for package:wasm
>
> So far this just builds the wasmer library, copies it into the sdk
> directory, loads the library, and allows you to compile WASM modules.
> You can't actually do anything with the modules yet.
>
> Bug: https://github.com/dart-lang/sdk/issues/37882
> Change-Id: I7d7cfe5721bbe38a6afe76f326518e714d236ed4
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/158367
> Commit-Queue: Liam Appelbe <liama@google.com>
> Reviewed-by: Ryan Macnak <rmacnak@google.com>

Bug: https://github.com/dart-lang/sdk/issues/37882
Change-Id: I8056df1e301acde2772ba2273148faa53d03173e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/159321
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Liam Appelbe <liama@google.com>
This commit is contained in:
Liam Appelbe
2020-08-21 18:23:00 +00:00
committed by commit-bot@chromium.org
parent 085076337b
commit 0f14261176
19 changed files with 287 additions and 26 deletions
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build/rust/rust.gni
+76 -13
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@@ -2,40 +2,103 @@
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.
_dart_root = get_path_info("../..", "abspath")
template("rust_library") {
manifest = rebase_path("Cargo.toml")
if (defined(invoker.manifest)) {
manifest = invoker.manifest
}
debug = defined(invoker.debug) && invoker.debug
shared = defined(invoker.shared) && invoker.shared
cmd = [
rebase_path("//buildtools/${current_os}-${current_cpu}/rust/bin/cargo"),
rebase_path("//buildtools/${host_os}-${host_cpu}/rust/bin/cargo"),
"build",
"--target-dir",
rebase_path(target_out_dir),
"--manifest-path",
manifest,
]
output = "$target_out_dir/lib${invoker.lib_name}.a"
debug = defined(invoker.debug) && invoker.debug
if (!debug) {
# For cross compilation, figure out the target triple. You can get a full list
# of the targets that rust supports like this: rustc --print target-list
cargo_out_dir = target_out_dir
if (is_linux) {
rust_os = "unknown-linux-gnu"
} else if (is_mac) {
rust_os = "apple-darwin"
} else if (is_win) {
rust_os = "pc-windows-gnu"
} else if (is_android) {
rust_os = "linux-android"
} else if (is_fuchsia) {
rust_os = "fuchsia"
}
if (defined(rust_os)) {
if (current_cpu == "x86") {
rust_target = "i686-${rust_os}"
} else if (current_cpu == "x64") {
rust_target = "x86_64-${rust_os}"
} else if (current_cpu == "arm") {
rust_target = "arm-${rust_os}eabi"
} else if (current_cpu == "arm64") {
rust_target = "aarch64-${rust_os}"
}
}
if (defined(rust_target)) {
cmd += [
"--target",
rust_target,
]
cargo_out_dir += "/${rust_target}"
}
if (debug) {
cargo_out_dir += "/debug"
} else {
cargo_out_dir += "/release"
cmd += [ "--release" ]
}
action(target_name) {
script = "//build/rust/run.py"
output_file = ""
if (shared) {
if (is_win) {
output_file = "${invoker.lib_name}.dll"
} else if (is_mac) {
output_file = "lib${invoker.lib_name}.dylib"
} else {
output_file = "lib${invoker.lib_name}.so"
}
} else {
if (is_win) {
output_file = "${invoker.lib_name}.lib"
}else {
output_file = "lib${invoker.lib_name}.a"
}
}
action("${target_name}_cargo") {
script = "${_dart_root}/build/rust/run.py"
args = cmd
outputs = [ output ]
outputs = [ "${cargo_out_dir}/${output_file}" ]
public_configs = [ ":${target_name}_config" ]
}
config("${target_name}_config") {
libs = [ "wasmer" ]
if (debug) {
lib_dirs = [ "$target_out_dir/debug" ]
} else {
lib_dirs = [ "$target_out_dir/release" ]
config("${target_name}_cargo_config") {
if (!shared) {
libs = [ invoker.lib_name ]
lib_dirs = [ out_dir ]
}
}
# Cargo leaves the library in cargo_out_dir, which varies based on the target.
# So we need to copy it to target_out_dir to make it easier for dependees to
# locate the library.
copy(target_name) {
deps = [ ":${target_name}_cargo" ]
sources = [ "${cargo_out_dir}/${output_file}" ]
outputs = [ "${target_out_dir}/${output_file}" ]
}
}