dart-sdk/build/config/BUILD.gn
Ryan Macnak e31c3713bf Reland "[build, vm] Access TLS with less code."
- Avoid TLS initialization checks by using inline initialization.
 - Avoid global offset table indirection by reducing -fPIC to -fPIE.

out/ReleaseXARM64/exe.stripped/dart_precompiled_runtime
11137992 -> 11274776 (-1.21%)

We still need -fPIC in some places because we build a few shared libraries for FFI, so copy some of Fuchsia's GN setup to use -fPIE or -fPIC as appropriate.

Account for older gcc that does not default to -fpie.

TEST=ci
Bug: https://github.com/dart-lang/sdk/issues/51602
Change-Id: I85072153cb1aef9047c1adbf36c7496fbeb11e10
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/286221
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2023-03-02 23:07:16 +00:00

27 lines
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Text

# Copyright (c) 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Debug/release ----------------------------------------------------------------
config("debug") {
defines = [ "DEBUG" ]
}
config("release") {
defines = [ "NDEBUG" ]
}
config("product") {
defines = [
"NDEBUG",
"PRODUCT",
]
}
config("shared_library_config") {
if (current_os == "android" || current_os == "fuchsia" ||
current_os == "linux" || current_os == "mac") {
cflags = [ "-fPIC" ]
}
}