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Build gen_snapshot with a 64-bit host toolchain even if the target platform is 32-bit (flutter/engine#12802)

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By default Dart will build a gen_snapshot for the host platform using a
toolchain matching the bit width of the target platform.  Some host platforms
no longer support 32-bit binaries, so gen_snapshot will now be built as a
64-bit host binary even if the target is 32-bit.
This commit is contained in:
Jason Simmons 2019-10-04 14:00:30 -07:00 committed by GitHub
parent 066cd5c34c
commit a72b1b3878
2 changed files with 8 additions and 2 deletions
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2
DEPS
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@ -136,7 +136,7 @@ allowed_hosts = [
]
deps = {
'src': 'https://github.com/flutter/buildroot.git' + '@' + '01e923507b28e5d1d3fe7597d2db2b30b0a543e9',
'src': 'https://github.com/flutter/buildroot.git' + '@' + '3b6ae6cbb7d891e637331faf689005fd6f302568',
# Fuchsia compatibility
#

8
engine/src/flutter/lib/snapshot/BUILD.gn
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@ -20,7 +20,13 @@ copy("generate_dart_ui") {
}
compiled_action("generate_snapshot_bin") {
tool = "//third_party/dart/runtime/bin:gen_snapshot"
# By default Dart will create a 32-bit gen_snapshot host binary if the target
# platform is 32-bit. Override this to create a 64-bit gen_snapshot for x86
# targets because some host platforms may not support 32-bit binaries.
tool = "//third_party/dart/runtime/bin:gen_snapshot_host_targeting_host"
if (target_cpu == "x86") {
toolchain = "//build/toolchain/$host_os:clang_x64"
}
if ((is_fuchsia || is_fuchsia_host) && !using_fuchsia_sdk) {
platform_kernel =