136 lines
5.2 KiB
Go
136 lines
5.2 KiB
Go
// Copyright 2016 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cc
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// This file contains utility functions to check for bad or illegal cflags
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// specified by a module
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import (
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"path/filepath"
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"strings"
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"android/soong/cc/config"
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)
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// Check for invalid c/conly/cpp/asflags and suggest alternatives. Only use this
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// for flags explicitly passed by the user, since these flags may be used internally.
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func CheckBadCompilerFlags(ctx BaseModuleContext, prop string, flags []string) {
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for _, flag := range flags {
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flag = strings.TrimSpace(flag)
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if !strings.HasPrefix(flag, "-") {
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ctx.PropertyErrorf(prop, "Flag `%s` must start with `-`", flag)
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} else if strings.HasPrefix(flag, "-I") || strings.HasPrefix(flag, "-isystem") {
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ctx.PropertyErrorf(prop, "Bad flag `%s`, use local_include_dirs or include_dirs instead", flag)
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} else if inList(flag, config.IllegalFlags) {
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ctx.PropertyErrorf(prop, "Illegal flag `%s`", flag)
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} else if strings.Contains(flag, " ") {
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args := strings.Split(flag, " ")
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if args[0] == "-include" {
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if len(args) > 2 {
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ctx.PropertyErrorf(prop, "`-include` only takes one argument: `%s`", flag)
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}
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path := filepath.Clean(args[1])
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if strings.HasPrefix("/", path) {
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ctx.PropertyErrorf(prop, "Path must not be an absolute path: %s", flag)
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} else if strings.HasPrefix("../", path) {
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ctx.PropertyErrorf(prop, "Path must not start with `../`: `%s`. Use include_dirs to -include from a different directory", flag)
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}
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} else {
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ctx.PropertyErrorf(prop, "Bad flag: `%s` is not an allowed multi-word flag. Should it be split into multiple flags?", flag)
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}
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}
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}
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}
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// Check for bad ldflags and suggest alternatives. Only use this for flags
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// explicitly passed by the user, since these flags may be used internally.
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func CheckBadLinkerFlags(ctx BaseModuleContext, prop string, flags []string) {
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for _, flag := range flags {
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flag = strings.TrimSpace(flag)
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if !strings.HasPrefix(flag, "-") {
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ctx.PropertyErrorf(prop, "Flag `%s` must start with `-`", flag)
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} else if strings.HasPrefix(flag, "-l") {
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if ctx.Host() {
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ctx.PropertyErrorf(prop, "Bad flag: `%s`, use shared_libs or host_ldlibs instead", flag)
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} else {
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ctx.PropertyErrorf(prop, "Bad flag: `%s`, use shared_libs instead", flag)
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}
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} else if strings.HasPrefix(flag, "-L") {
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ctx.PropertyErrorf(prop, "Bad flag: `%s` is not allowed", flag)
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} else if strings.HasPrefix(flag, "-Wl,--version-script") {
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ctx.PropertyErrorf(prop, "Bad flag: `%s`, use version_script instead", flag)
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} else if strings.Contains(flag, " ") {
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args := strings.Split(flag, " ")
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if args[0] == "-z" {
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if len(args) > 2 {
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ctx.PropertyErrorf(prop, "`-z` only takes one argument: `%s`", flag)
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}
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} else {
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ctx.PropertyErrorf(prop, "Bad flag: `%s` is not an allowed multi-word flag. Should it be split into multiple flags?", flag)
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}
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}
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}
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}
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// Check for bad host_ldlibs
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func CheckBadHostLdlibs(ctx ModuleContext, prop string, flags []string) {
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allowed_ldlibs := ctx.toolchain().AvailableLibraries()
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if !ctx.Host() {
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panic("Invalid call to CheckBadHostLdlibs")
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}
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for _, flag := range flags {
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flag = strings.TrimSpace(flag)
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// TODO: Probably should just redo this property to prefix -l in Soong
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if !strings.HasPrefix(flag, "-l") && !strings.HasPrefix(flag, "-framework") {
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ctx.PropertyErrorf(prop, "Invalid flag: `%s`, must start with `-l` or `-framework`", flag)
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} else if !inList(flag, allowed_ldlibs) {
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ctx.PropertyErrorf(prop, "Host library `%s` not available", flag)
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}
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}
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}
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// Check for bad clang tidy flags
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func CheckBadTidyFlags(ctx ModuleContext, prop string, flags []string) {
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for _, flag := range flags {
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flag = strings.TrimSpace(flag)
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if !strings.HasPrefix(flag, "-") {
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ctx.PropertyErrorf(prop, "Flag `%s` must start with `-`", flag)
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} else if strings.HasPrefix(flag, "-fix") {
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ctx.PropertyErrorf(prop, "Flag `%s` is not allowed, since it could cause multiple writes to the same source file", flag)
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} else if strings.HasPrefix(flag, "-checks=") {
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ctx.PropertyErrorf(prop, "Flag `%s` is not allowed, use `tidy_checks` property instead", flag)
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} else if strings.Contains(flag, " ") {
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ctx.PropertyErrorf(prop, "Bad flag: `%s` is not an allowed multi-word flag. Should it be split into multiple flags?", flag)
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}
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}
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}
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// Check for bad clang tidy checks
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func CheckBadTidyChecks(ctx ModuleContext, prop string, checks []string) {
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for _, check := range checks {
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if strings.Contains(check, " ") {
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ctx.PropertyErrorf("tidy_checks", "Check `%s` invalid, cannot contain spaces", check)
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} else if strings.Contains(check, ",") {
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ctx.PropertyErrorf("tidy_checks", "Check `%s` invalid, cannot contain commas. Split each entry into it's own string instead", check)
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}
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}
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}
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