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