InterfaceStubs.cpp revision 360784 
1//===---  InterfaceStubs.cpp - Base InterfaceStubs Implementations C++  ---===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "InterfaceStubs.h"
10#include "CommonArgs.h"
11#include "clang/Driver/Compilation.h"
12#include "llvm/Support/Path.h"
13
14namespace clang {
15namespace driver {
16namespace tools {
17namespace ifstool {
18void Merger::ConstructJob(Compilation &C, const JobAction &JA,
19                          const InputInfo &Output, const InputInfoList &Inputs,
20                          const llvm::opt::ArgList &Args,
21                          const char *LinkingOutput) const {
22  std::string Merger = getToolChain().GetProgramPath(getShortName());
23  llvm::opt::ArgStringList CmdArgs;
24  CmdArgs.push_back("-action");
25  const bool WriteBin = !Args.getLastArg(options::OPT_emit_merged_ifs);
26  CmdArgs.push_back(WriteBin ? "write-bin" : "write-ifs");
27  CmdArgs.push_back("-o");
28
29  // Normally we want to write to a side-car file ending in ".ifso" so for
30  // example if `clang -emit-interface-stubs -shared -o libhello.so` were
31  // invoked then we would like to get libhello.so and libhello.ifso. If the
32  // stdout stream is given as the output file (ie `-o -`), that is the one
33  // exception where we will just append to the same filestream as the normal
34  // output.
35  SmallString<128> OutputFilename(Output.getFilename());
36  if (OutputFilename != "-") {
37    if (Args.hasArg(options::OPT_shared))
38      llvm::sys::path::replace_extension(OutputFilename,
39                                         (WriteBin ? "ifso" : "ifs"));
40    else
41      OutputFilename += (WriteBin ? ".ifso" : ".ifs");
42  }
43
44  CmdArgs.push_back(Args.MakeArgString(OutputFilename.c_str()));
45
46  // Here we append the input files. If the input files are object files, then
47  // we look for .ifs files present in the same location as the object files.
48  for (const auto &Input : Inputs) {
49    if (!Input.isFilename())
50      continue;
51    SmallString<128> InputFilename(Input.getFilename());
52    if (Input.getType() == types::TY_Object)
53      llvm::sys::path::replace_extension(InputFilename, ".ifs");
54    CmdArgs.push_back(Args.MakeArgString(InputFilename.c_str()));
55  }
56
57  C.addCommand(std::make_unique<Command>(JA, *this, Args.MakeArgString(Merger),
58                                         CmdArgs, Inputs));
59}
60} // namespace ifstool
61} // namespace tools
62} // namespace driver
63} // namespace clang
64