blob: eaaf015cabeaed6f8917b964bbcddc38eb15df74 [file] [log] [blame]
# Copyright (c) 2018 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.
# absl specific compiler flags.
#
# Flags specified here must not impact ABI. Code compiled with and without these
# opts will be linked together, and in some cases headers compiled with and
# without these options will be part of the same program.
group("default") {
deps = [
"absl/types:any",
"absl/types:bad_any_cast",
"absl/types:span",
"absl/types:optional",
"absl/types:bad_optional_access",
]
}
config("absl_include_config") {
# Using -isystem (with clang and GCC) and -imsvc (with clang-cl) instead of
# include_dirs (-I), so we don't need to suppress warnings coming from
# Abseil. Doing so would mask warnings in our own code.
if (is_win) {
if (is_clang) {
# clang-cl:
cflags = [
"-imsvc",
rebase_path(".", root_build_dir),
]
} else {
# MSVC doesn't have -isystem, in that case we fallback to include_dirs and
# we use the warning suppression flags defined in :absl_default_cflags_cc.
include_dirs = [ "." ]
}
} else {
# GCC or clang:
cflags = [
"-isystem",
rebase_path(".", root_build_dir),
]
}
}
config("absl_define_config") {
defines = [ "ABSL_ALLOCATOR_NOTHROW=1" ]
}
config("absl_default_cflags_cc") {
if (is_clang) {
cflags_cc = [
# Abseil does not support C++98
"-Wno-c++98-compat-pedantic",
# Turns off all implicit conversion warnings. Most are re-enabled below.
"-Wno-conversion",
"-Wno-covered-switch-default",
"-Wno-deprecated",
"-Wno-disabled-macro-expansion",
"-Wno-double-promotion",
###
# Turned off as they include valid C++ code.
"-Wno-comma",
"-Wno-extra-semi",
"-Wno-packed",
"-Wno-padded",
###
"-Wno-float-conversion",
"-Wno-float-equal",
"-Wno-format-nonliteral",
# Too aggressive: warns on Clang extensions enclosed in Clang-only
# compilation paths.
"-Wno-gcc-compat",
###
# Some internal globals are necessary. Don't do this at home.
"-Wno-global-constructors",
"-Wno-exit-time-destructors",
###
"-Wno-nested-anon-types",
"-Wno-non-modular-include-in-module",
"-Wno-old-style-cast",
# Warns on preferred usage of non-POD types such as string_view
"-Wno-range-loop-analysis",
"-Wno-reserved-id-macro",
"-Wno-shorten-64-to-32",
"-Wno-switch-enum",
"-Wno-thread-safety-negative",
"-Wno-undef",
"-Wno-unknown-warning-option",
"-Wno-unreachable-code",
# Causes warnings on include guards
"-Wno-unused-macros",
"-Wno-weak-vtables",
###
# Implicit conversion warnings turned off by -Wno-conversion
# which are re-enabled below.
"-Wbitfield-enum-conversion",
"-Wbool-conversion",
"-Wconstant-conversion",
"-Wenum-conversion",
"-Wint-conversion",
"-Wliteral-conversion",
"-Wnon-literal-null-conversion",
"-Wnull-conversion",
"-Wobjc-literal-conversion",
"-Wno-sign-conversion",
"-Wstring-conversion",
###
]
} else {
if (is_linux) {
# GCC flags:
cflags_cc = [
# Google style does not use unsigned integers, though STL containers
# have unsigned types.
"-Wno-sign-compare",
]
}
if (is_win) {
# MSVC flags:
cflags_cc = [
"/wd4005", # macro-redefinition
"/wd4068", # unknown pragma
"/wd4702", # unreachable code
]
}
}
}
config("absl_test_cflags_cc") {
if (is_clang) {
cflags_cc = [
"-Wno-c99-extensions",
"-Wno-missing-noreturn",
"-Wno-missing-prototypes",
"-Wno-null-conversion",
"-Wno-shadow",
"-Wno-shift-sign-overflow",
"-Wno-sign-compare",
"-Wno-unused-function",
"-Wno-unused-member-function",
"-Wno-unused-parameter",
"-Wno-unused-private-field",
"-Wno-unused-template",
"-Wno-used-but-marked-unused",
"-Wno-zero-as-null-pointer-constant",
]
} else {
if (is_linux) {
# GCC flags:
cflags_cc = [
"-Wno-conversion-null",
"-Wno-missing-declarations",
"-Wno-sign-compare",
"-Wno-unused-function",
"-Wno-unused-parameter",
"-Wno-unused-private-field",
]
}
if (is_win) {
# MSVC flags:
cflags_cc = [
"/wd4018", # signed/unsigned mismatch
"/wd4101", # unreferenced local variable
]
}
}
}