| #!/usr/bin/env bash |
| # Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file |
| # 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. |
| |
| # Script for generating AOT snapshot in two steps: |
| # - Compilation to kernel with additional AOT specific transformations. |
| # - Compilation of kernel into snapshot using gen_snapshot. |
| |
| # Parse incoming arguments and extract the value of --packages option if any |
| # was passed. Split options (--xyz) and non-options into two separate arrays. |
| # All options will be passed to gen_snapshot, while --packages will be |
| # passed to the CFE (Common Front-End). |
| |
| set -e |
| |
| OPTIONS=() |
| GEN_KERNEL_OPTIONS=() |
| PACKAGES= |
| BUILD_ELF=0 |
| |
| ARGV=() |
| for arg in "$@"; do |
| case $arg in |
| --packages=*) |
| PACKAGES="$arg" |
| ;; |
| --enable-asserts) |
| GEN_KERNEL_OPTIONS+=("$arg") |
| OPTIONS+=("$arg") |
| ;; |
| --tfa | \ |
| --no-tfa | \ |
| -D* ) |
| GEN_KERNEL_OPTIONS+=("$arg") |
| ;; |
| --build-elf) |
| BUILD_ELF=1 |
| ;; |
| --*) |
| OPTIONS+=("$arg") |
| ;; |
| *) |
| ARGV+=("$arg") |
| ;; |
| esac |
| done |
| |
| if [ "${#ARGV[@]}" -ne 2 ]; then |
| echo "Usage: $0 [options] <dart-source-file> <dart-aot-file>" |
| echo "" |
| echo "Dart AOT (ahead-of-time) compile Dart source code into native machine code." |
| exit 1 |
| fi |
| |
| SOURCE_FILE="${ARGV[0]}" |
| SNAPSHOT_FILE="${ARGV[1]}" |
| |
| if [ $BUILD_ELF -eq 1 ]; then |
| GEN_SNAPSHOT_OPTION="--snapshot-kind=app-aot-assembly" |
| GEN_SNAPSHOT_FILENAME="--assembly=${SNAPSHOT_FILE}.S" |
| else |
| GEN_SNAPSHOT_OPTION="--snapshot-kind=app-aot-blobs" |
| GEN_SNAPSHOT_FILENAME="--blobs_container_filename=${SNAPSHOT_FILE}" |
| fi |
| |
| function follow_links() { |
| file="$1" |
| while [ -h "$file" ]; do |
| # On Mac OS, readlink -f doesn't work. |
| file="$(readlink "$file")" |
| done |
| echo "$file" |
| } |
| |
| # Unlike $0, $BASH_SOURCE points to the absolute path of this file. |
| PROG_NAME="$(follow_links "$BASH_SOURCE")" |
| |
| # Handle the case where dart-sdk/bin has been symlinked to. |
| BIN_DIR="$(cd "${PROG_NAME%/*}" ; pwd -P)" |
| |
| SDK_DIR="$(cd "${BIN_DIR}/.." ; pwd -P)" |
| |
| DART="$BIN_DIR/dart" |
| GEN_SNAPSHOT="$BIN_DIR/utils/gen_snapshot" |
| |
| SNAPSHOT_DIR="$BIN_DIR/snapshots" |
| SNAPSHOT="$SNAPSHOT_DIR/gen_kernel.dart.snapshot" |
| |
| # Step 1: Generate Kernel binary from the input Dart source. |
| "$DART" \ |
| "${SNAPSHOT}" \ |
| --platform "${SDK_DIR}/lib/_internal/vm_platform_strong.dill" \ |
| --aot \ |
| -Ddart.vm.product=true \ |
| "${GEN_KERNEL_OPTIONS[@]}" \ |
| $PACKAGES \ |
| -o "$SNAPSHOT_FILE.dill" \ |
| "$SOURCE_FILE" |
| |
| # Step 2: Generate snapshot from the Kernel binary. |
| "$GEN_SNAPSHOT" \ |
| "$GEN_SNAPSHOT_OPTION" \ |
| "$GEN_SNAPSHOT_FILENAME" \ |
| "${OPTIONS[@]}" \ |
| "$SNAPSHOT_FILE.dill" |
| |
| # Step 3: Assemble the assembly file into an ELF object. |
| if [ $BUILD_ELF -eq 1 ]; then |
| gcc -shared -o "$SNAPSHOT_FILE" "${SNAPSHOT_FILE}.S" |
| fi |