#include "llvm/Bytecode/Reader.h"
#include "llvm/Bytecode/Writer.h"
#include "llvm/Assembly/Writer.h"
-#include "llvm/Support/CommandLine.h"
#include "llvm/Module.h"
#include "llvm/Method.h"
-#include <fstream.h>
+#include "Support/CommandLine.h"
+#include <fstream>
#include <memory>
+#include <sys/types.h> // For FileExists
+#include <sys/stat.h>
cl::StringList InputFilenames("", "Load <arg> files, linking them together",
cl::Flag Verbose ("v", "Print information about actions taken");
cl::Flag DumpAsm ("d", "Print assembly as linked", cl::Hidden, false);
cl::StringList LibPaths ("L", "Specify a library search path", cl::ZeroOrMore);
+cl::StringList Libraries ("l", "Specify libraries to link to", cl::ZeroOrMore);
-static inline std::auto_ptr<Module> LoadFile(const string &FN) {
- string Filename = FN;
- string ErrorMessage;
+
+// FileExists - Return true if the specified string is an openable file...
+static inline bool FileExists(const std::string &FN) {
+ struct stat StatBuf;
+ return stat(FN.c_str(), &StatBuf) != -1;
+}
+
+// LoadFile - Read the specified bytecode file in and return it. This routine
+// searches the link path for the specified file to try to find it...
+//
+static inline std::auto_ptr<Module> LoadFile(const std::string &FN) {
+ std::string Filename = FN;
+ std::string ErrorMessage;
unsigned NextLibPathIdx = 0;
+ bool FoundAFile = false;
while (1) {
if (Verbose) cerr << "Loading '" << Filename << "'\n";
+ if (FileExists(Filename)) FoundAFile = true;
Module *Result = ParseBytecodeFile(Filename, &ErrorMessage);
if (Result) return std::auto_ptr<Module>(Result); // Load successful!
Filename = LibPaths[NextLibPathIdx++] + "/" + FN;
}
- cerr << "Could not locate bytecode file: '" << FN << "'\n";
+ if (FoundAFile)
+ cerr << "Bytecode file '" << FN << "' corrupt! "
+ << "Use 'link -v ...' for more info.\n";
+ else
+ cerr << "Could not locate bytecode file: '" << FN << "'\n";
return std::auto_ptr<Module>();
}
+
+
+
int main(int argc, char **argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm linker\n",
cl::EnableSingleLetterArgValue |
assert(InputFilenames.size() > 0 && "OneOrMore is not working");
unsigned BaseArg = 0;
- string ErrorMessage;
+ std::string ErrorMessage;
// TODO: TEST argv[0] for llvm-ar forms... for now, this is a huge hack.
if (InputFilenames.size() >= 3 && InputFilenames[0] == "rc" &&
OutputFilename = InputFilenames[1];
}
+ if (!Libraries.empty())
+ cerr << "LLVM Linker Warning: Linking to libraries is unimplemented!\n";
+
std::auto_ptr<Module> Composite(LoadFile(InputFilenames[BaseArg]));
if (Composite.get() == 0) return 1;
for (unsigned i = BaseArg+1; i < InputFilenames.size(); ++i) {
- auto_ptr<Module> M(LoadFile(InputFilenames[i]));
+ std::auto_ptr<Module> M(LoadFile(InputFilenames[i]));
if (M.get() == 0) return 1;
if (Verbose) cerr << "Linking in '" << InputFilenames[i] << "'\n";
ostream *Out = &cout; // Default to printing to stdout...
if (OutputFilename != "-") {
- Out = new ofstream(OutputFilename.c_str(),
- (Force ? 0 : ios::noreplace)|ios::out);
+ if (!Force && std::ifstream(OutputFilename.c_str())) {
+ // If force is not specified, make sure not to overwrite a file!
+ cerr << "Error opening '" << OutputFilename << "': File exists!\n"
+ << "Use -f command line argument to force output\n";
+ return 1;
+ }
+ Out = new std::ofstream(OutputFilename.c_str());
if (!Out->good()) {
cerr << "Error opening '" << OutputFilename << "'!\n";
return 1;
if (Verbose) cerr << "Writing bytecode...\n";
WriteBytecodeToFile(Composite.get(), *Out);
- if (Out != &cout) delete Out;
+ if (Out != &std::cout) delete Out;
return 0;
}