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- // Copyright 2017 Google Inc. All rights reserved.
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
- package config
- import (
- "sort"
- "strings"
- )
- // Cflags that should be filtered out when compiling with clang
- var ClangUnknownCflags = sorted([]string{
- "-finline-functions",
- "-finline-limit=64",
- "-fno-canonical-system-headers",
- "-Wno-clobbered",
- "-fno-devirtualize",
- "-fno-tree-sra",
- "-fprefetch-loop-arrays",
- "-funswitch-loops",
- "-Werror=unused-but-set-parameter",
- "-Werror=unused-but-set-variable",
- "-Wmaybe-uninitialized",
- "-Wno-error=clobbered",
- "-Wno-error=maybe-uninitialized",
- "-Wno-error=unused-but-set-parameter",
- "-Wno-error=unused-but-set-variable",
- "-Wno-free-nonheap-object",
- "-Wno-literal-suffix",
- "-Wno-maybe-uninitialized",
- "-Wno-old-style-declaration",
- "-Wno-psabi",
- "-Wno-unused-but-set-parameter",
- "-Wno-unused-but-set-variable",
- "-Wno-unused-local-typedefs",
- "-Wunused-but-set-parameter",
- "-Wunused-but-set-variable",
- "-fdiagnostics-color",
- // arm + arm64 + mips + mips64
- "-fgcse-after-reload",
- "-frerun-cse-after-loop",
- "-frename-registers",
- "-fno-strict-volatile-bitfields",
- // arm + arm64
- "-fno-align-jumps",
- // arm
- "-mthumb-interwork",
- "-fno-builtin-sin",
- "-fno-caller-saves",
- "-fno-early-inlining",
- "-fno-move-loop-invariants",
- "-fno-partial-inlining",
- "-fno-tree-copy-prop",
- "-fno-tree-loop-optimize",
- // mips + mips64
- "-msynci",
- "-mno-synci",
- "-mno-fused-madd",
- // x86 + x86_64
- "-finline-limit=300",
- "-fno-inline-functions-called-once",
- "-mfpmath=sse",
- "-mbionic",
- })
- var ClangLibToolingUnknownCflags = []string{
- "-flto*",
- "-fsanitize*",
- }
- func init() {
- pctx.StaticVariable("ClangExtraCflags", strings.Join([]string{
- "-D__compiler_offsetof=__builtin_offsetof",
- // Help catch common 32/64-bit errors.
- "-Werror=int-conversion",
- // Disable overly aggressive warning for macros defined with a leading underscore
- // This happens in AndroidConfig.h, which is included nearly everywhere.
- // TODO: can we remove this now?
- "-Wno-reserved-id-macro",
- // Disable overly aggressive warning for format strings.
- // Bug: 20148343
- "-Wno-format-pedantic",
- // Workaround for ccache with clang.
- // See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
- "-Wno-unused-command-line-argument",
- // Force clang to always output color diagnostics. Ninja will strip the ANSI
- // color codes if it is not running in a terminal.
- "-fcolor-diagnostics",
- // http://b/29823425 Disable -Wexpansion-to-defined for Clang update to r271374
- "-Wno-expansion-to-defined",
- // http://b/68236239 Allow 0/NULL instead of using nullptr everywhere.
- "-Wno-zero-as-null-pointer-constant",
- // http://b/36463318 Clang executes with an absolute path, so clang-provided
- // headers are now absolute.
- "-fdebug-prefix-map=$$PWD/=",
- }, " "))
- pctx.StaticVariable("ClangExtraCppflags", strings.Join([]string{
- // Disable -Winconsistent-missing-override until we can clean up the existing
- // codebase for it.
- "-Wno-inconsistent-missing-override",
- // Bug: http://b/29823425 Disable -Wnull-dereference until the
- // new instances detected by this warning are fixed.
- "-Wno-null-dereference",
- // Enable clang's thread-safety annotations in libcxx.
- // Turn off -Wthread-safety-negative, to avoid breaking projects that use -Weverything.
- "-D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS",
- "-Wno-thread-safety-negative",
- }, " "))
- pctx.StaticVariable("ClangExtraTargetCflags", strings.Join([]string{
- "-nostdlibinc",
- }, " "))
- pctx.StaticVariable("ClangExtraNoOverrideCflags", strings.Join([]string{
- "-Werror=address-of-temporary",
- // Bug: http://b/29823425 Disable -Wnull-dereference until the
- // new cases detected by this warning in Clang r271374 are
- // fixed.
- //"-Werror=null-dereference",
- "-Werror=return-type",
- }, " "))
- }
- func ClangFilterUnknownCflags(cflags []string) []string {
- ret := make([]string, 0, len(cflags))
- for _, f := range cflags {
- if !inListSorted(f, ClangUnknownCflags) {
- ret = append(ret, f)
- }
- }
- return ret
- }
- func inListSorted(s string, list []string) bool {
- for _, l := range list {
- if s == l {
- return true
- } else if s < l {
- return false
- }
- }
- return false
- }
- func sorted(list []string) []string {
- sort.Strings(list)
- return list
- }
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