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32 lines
1.2 KiB
C++
32 lines
1.2 KiB
C++
//===-- PluginLoader.cpp - Implement -load command line option ------------===//
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//
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// This file implements the -load <plugin> command line option processor. When
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// linked into a program, this new command line option is available that allows
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// users to load shared objects into the running program.
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//
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// Note that there are no symbols exported by the .o file generated for this
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// .cpp file. Because of this, a program must link against support.o instead of
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// support.a: otherwise this translation unit will not be included.
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//
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//===----------------------------------------------------------------------===//
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#include "Support/CommandLine.h"
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#include <dlfcn.h>
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#include <link.h>
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#include <iostream>
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namespace {
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struct PluginLoader {
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void operator=(const std::string &Filename) {
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if (dlopen(Filename.c_str(), RTLD_NOW) == 0)
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std::cerr << "Error opening '" << Filename << "': " << dlerror()
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<< "\n -load request ignored.\n";
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}
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};
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}
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// This causes operator= above to be invoked for every -load option.
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static cl::opt<PluginLoader, false, cl::parser<std::string> >
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LoadOpt("load", cl::ZeroOrMore, cl::value_desc("plugin.so"),
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cl::desc("Load the specified plugin"));
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