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 "clang/Driver/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(Name: getShortName());
23 // TODO: Use IFS library directly in the future.
24 llvm::opt::ArgStringList CmdArgs;
25 CmdArgs.push_back(Elt: "--input-format=IFS");
26 const bool WriteBin = !Args.getLastArg(Ids: options::OPT_emit_merged_ifs);
27 CmdArgs.push_back(Elt: WriteBin ? "--output-format=ELF" : "--output-format=IFS");
28 CmdArgs.push_back(Elt: "-o");
29
30 // Normally we want to write to a side-car file ending in ".ifso" so for
31 // example if `clang -emit-interface-stubs -shared -o libhello.so` were
32 // invoked then we would like to get libhello.so and libhello.ifso. If the
33 // stdout stream is given as the output file (ie `-o -`), that is the one
34 // exception where we will just append to the same filestream as the normal
35 // output.
36 SmallString<128> OutputFilename(Output.getFilename());
37 if (OutputFilename != "-") {
38 if (Args.hasArg(Ids: options::OPT_shared))
39 llvm::sys::path::replace_extension(path&: OutputFilename,
40 extension: (WriteBin ? "ifso" : "ifs"));
41 else
42 OutputFilename += (WriteBin ? ".ifso" : ".ifs");
43 }
44
45 CmdArgs.push_back(Elt: Args.MakeArgString(Str: OutputFilename.c_str()));
46
47 // Here we append the input files. If the input files are object files, then
48 // we look for .ifs files present in the same location as the object files.
49 for (const auto &Input : Inputs) {
50 if (!Input.isFilename())
51 continue;
52 SmallString<128> InputFilename(Input.getFilename());
53 if (Input.getType() == types::TY_Object)
54 llvm::sys::path::replace_extension(path&: InputFilename, extension: ".ifs");
55 CmdArgs.push_back(Elt: Args.MakeArgString(Str: InputFilename.c_str()));
56 }
57
58 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this, args: ResponseFileSupport::None(),
59 args: Args.MakeArgString(Str: Merger), args&: CmdArgs,
60 args: Inputs, args: Output));
61}
62} // namespace ifstool
63} // namespace tools
64} // namespace driver
65} // namespace clang
66