97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
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// Copyright 2015 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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import (
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"fmt"
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"regexp"
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"strings"
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)
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// Efficiently converts a list of include directories to a single string
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// of cflags with -I prepended to each directory.
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func includeDirsToFlags(dirs []string) string {
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return joinWithPrefix(dirs, "-I")
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}
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func ldDirsToFlags(dirs []string) string {
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return joinWithPrefix(dirs, "-L")
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}
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func libNamesToFlags(names []string) string {
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return joinWithPrefix(names, "-l")
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}
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func joinWithPrefix(strs []string, prefix string) string {
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if len(strs) == 0 {
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return ""
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}
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if len(strs) == 1 {
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return prefix + strs[0]
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}
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n := len(" ") * (len(strs) - 1)
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for _, s := range strs {
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n += len(prefix) + len(s)
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}
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ret := make([]byte, 0, n)
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for i, s := range strs {
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if i != 0 {
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ret = append(ret, ' ')
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}
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ret = append(ret, prefix...)
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ret = append(ret, s...)
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}
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return string(ret)
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}
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func inList(s string, list []string) bool {
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for _, l := range list {
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if l == s {
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return true
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}
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}
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return false
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}
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var libNameRegexp = regexp.MustCompile(`^lib(.*)$`)
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func moduleToLibName(module string) (string, error) {
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matches := libNameRegexp.FindStringSubmatch(module)
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if matches == nil {
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return "", fmt.Errorf("Library module name %s does not start with lib", module)
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}
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return matches[1], nil
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}
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func ccFlagsToBuilderFlags(in ccFlags) builderFlags {
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return builderFlags{
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globalFlags: strings.Join(in.globalFlags, " "),
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asFlags: strings.Join(in.asFlags, " "),
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cFlags: strings.Join(in.cFlags, " "),
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conlyFlags: strings.Join(in.conlyFlags, " "),
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cppFlags: strings.Join(in.cppFlags, " "),
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ldFlags: strings.Join(in.ldFlags, " "),
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ldLibs: strings.Join(in.ldLibs, " "),
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incFlags: includeDirsToFlags(in.includeDirs),
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nocrt: in.nocrt,
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toolchain: in.toolchain,
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clang: in.clang,
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}
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}
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