1//===- MultilibBuilder.h
2//-----------------------------------------------*- C++ -*-===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef LLVM_CLANG_DRIVER_MULTILIBBUILDER_H
11#define LLVM_CLANG_DRIVER_MULTILIBBUILDER_H
12
13#include "clang/Driver/Multilib.h"
14
15namespace clang {
16namespace driver {
17
18/// This corresponds to a single GCC multilib, or a segment of one controlled
19/// by a command line flag. This class can be used to create a Multilib, and
20/// contains helper functions to mutate it before creating a Multilib instance
21/// with makeMultilib().
22class MultilibBuilder {
23public:
24 using flags_list = std::vector<std::string>;
25
26private:
27 std::string GCCSuffix;
28 std::string OSSuffix;
29 std::string IncludeSuffix;
30 flags_list Flags;
31
32public:
33 MultilibBuilder(StringRef GCCSuffix, StringRef OSSuffix,
34 StringRef IncludeSuffix);
35
36 /// Initializes GCCSuffix, OSSuffix & IncludeSuffix to the same value.
37 MultilibBuilder(StringRef Suffix = {});
38
39 /// Get the detected GCC installation path suffix for the multi-arch
40 /// target variant. Always starts with a '/', unless empty
41 const std::string &gccSuffix() const {
42 assert(GCCSuffix.empty() ||
43 (StringRef(GCCSuffix).front() == '/' && GCCSuffix.size() > 1));
44 return GCCSuffix;
45 }
46
47 /// Set the GCC installation path suffix.
48 MultilibBuilder &gccSuffix(StringRef S);
49
50 /// Get the detected os path suffix for the multi-arch
51 /// target variant. Always starts with a '/', unless empty
52 const std::string &osSuffix() const {
53 assert(OSSuffix.empty() ||
54 (StringRef(OSSuffix).front() == '/' && OSSuffix.size() > 1));
55 return OSSuffix;
56 }
57
58 /// Set the os path suffix.
59 MultilibBuilder &osSuffix(StringRef S);
60
61 /// Get the include directory suffix. Always starts with a '/', unless
62 /// empty
63 const std::string &includeSuffix() const {
64 assert(IncludeSuffix.empty() || (StringRef(IncludeSuffix).front() == '/' &&
65 IncludeSuffix.size() > 1));
66 return IncludeSuffix;
67 }
68
69 /// Set the include directory suffix
70 MultilibBuilder &includeSuffix(StringRef S);
71
72 /// Get the flags that indicate or contraindicate this multilib's use
73 /// All elements begin with either '-' or '!'
74 const flags_list &flags() const { return Flags; }
75 flags_list &flags() { return Flags; }
76
77 /// Add a flag to the flags list
78 /// \p Flag must be a flag accepted by the driver.
79 /// \p Disallow defines whether the flag is negated and therefore disallowed.
80 MultilibBuilder &flag(StringRef Flag, bool Disallow = false);
81
82 Multilib makeMultilib() const;
83
84 /// Check whether any of the 'against' flags contradict the 'for' flags.
85 bool isValid() const;
86
87 /// Check whether the default is selected
88 bool isDefault() const {
89 return GCCSuffix.empty() && OSSuffix.empty() && IncludeSuffix.empty();
90 }
91};
92
93/// This class can be used to create a MultilibSet, and contains helper
94/// functions to add combinations of multilibs before creating a MultilibSet
95/// instance with makeMultilibSet().
96class MultilibSetBuilder {
97public:
98 using multilib_list = std::vector<MultilibBuilder>;
99
100 MultilibSetBuilder() = default;
101
102 /// Add an optional Multilib segment
103 MultilibSetBuilder &Maybe(const MultilibBuilder &M);
104
105 /// Add a set of mutually incompatible Multilib segments
106 MultilibSetBuilder &Either(const MultilibBuilder &M1,
107 const MultilibBuilder &M2);
108 MultilibSetBuilder &Either(const MultilibBuilder &M1,
109 const MultilibBuilder &M2,
110 const MultilibBuilder &M3);
111 MultilibSetBuilder &Either(const MultilibBuilder &M1,
112 const MultilibBuilder &M2,
113 const MultilibBuilder &M3,
114 const MultilibBuilder &M4);
115 MultilibSetBuilder &Either(const MultilibBuilder &M1,
116 const MultilibBuilder &M2,
117 const MultilibBuilder &M3,
118 const MultilibBuilder &M4,
119 const MultilibBuilder &M5);
120 MultilibSetBuilder &Either(ArrayRef<MultilibBuilder> Ms);
121
122 /// Filter out those Multilibs whose gccSuffix matches the given expression
123 MultilibSetBuilder &FilterOut(const char *Regex);
124
125 MultilibSet makeMultilibSet() const;
126
127private:
128 multilib_list Multilibs;
129};
130
131} // namespace driver
132} // namespace clang
133
134#endif // LLVM_CLANG_DRIVER_MULTILIBBUILDER_H
135

source code of clang/include/clang/Driver/MultilibBuilder.h