Puyan Lotfi c382d03ca8 [clang][ifs] Clang Interface Stubs ToolChain plumbing.
Second Landing Attempt:

This patch enables end to end support for generating ELF interface stubs
directly from clang. Now the following:

clang -emit-interface-stubs -o libfoo.so a.cpp b.cpp c.cpp

will product an ELF binary with visible symbols populated. Visibility attributes
and -fvisibility can be used to control what gets populated.

* Adding ToolChain support for clang Driver IFS Merge Phase
* Implementing a default InterfaceStubs Merge clang Tool, used by ToolChain
* Adds support for the clang Driver to involve llvm-ifs on ifs files.
* Adds -emit-merged-ifs flag, to tell llvm-ifs to emit a merged ifs text file
  instead of the final object format (normally ELF)


Differential Revision: https://reviews.llvm.org/D63978

llvm-svn: 374061
2019-10-08 15:23:14 +00:00

37 lines
1.2 KiB
C++

//===--- InterfaceStubs.cpp - Base InterfaceStubs Implementations C++ ---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_IFS_H
#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_IFS_H
#include "clang/Driver/Tool.h"
#include "clang/Driver/ToolChain.h"
namespace clang {
namespace driver {
namespace tools {
namespace ifstool {
class LLVM_LIBRARY_VISIBILITY Merger : public Tool {
public:
Merger(const ToolChain &TC) : Tool("IFS::Merger", "llvm-ifs", TC) {}
bool hasIntegratedCPP() const override { return false; }
bool isLinkJob() const override { return false; }
void ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output, const InputInfoList &Inputs,
const llvm::opt::ArgList &TCArgs,
const char *LinkingOutput) const override;
};
} // end namespace ifstool
} // end namespace tools
} // end namespace driver
} // end namespace clang
#endif // LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_IFS_H