llvm/llvm/lib/Support/Unix/DynamicLibrary.inc

//===- Unix/DynamicLibrary.cpp - Unix DL Implementation ---------*- 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
//
//===----------------------------------------------------------------------===//
//
// This file provides the UNIX specific implementation of DynamicLibrary.
//
//===----------------------------------------------------------------------===//

#if defined(HAVE_DLFCN_H) && defined(HAVE_DLOPEN)
#include <dlfcn.h>

DynamicLibrary::HandleSet::~HandleSet() { … }

void *DynamicLibrary::HandleSet::DLOpen(const char *File, std::string *Err) { … }

void DynamicLibrary::HandleSet::DLClose(void *Handle) { … }

void *DynamicLibrary::HandleSet::DLSym(void *Handle, const char *Symbol) { … }

#else // !HAVE_DLOPEN

DynamicLibrary::HandleSet::~HandleSet() {}

void *DynamicLibrary::HandleSet::DLOpen(const char *File, std::string *Err) {
  if (Err)
    *Err = "dlopen() not supported on this platform";
  return &Invalid;
}

void DynamicLibrary::HandleSet::DLClose(void *Handle) {}

void *DynamicLibrary::HandleSet::DLSym(void *Handle, const char *Symbol) {
  return nullptr;
}

#endif

// Must declare the symbols in the global namespace.
static void *DoSearch(const char *SymbolName) { … }