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//===-- MachOUtils.h - Mach-o specific helpers for dsymutil --------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "MachOUtils.h"
#include "dsymutil.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
namespace dsymutil {
namespace MachOUtils {
std::string getArchName(StringRef Arch) {
if (Arch.startswith("thumb"))
return (llvm::Twine("arm") + Arch.drop_front(5)).str();
return Arch;
}
static bool runLipo(SmallVectorImpl<const char *> &Args) {
auto Path = sys::findProgramByName("lipo");
if (!Path) {
errs() << "error: lipo: " << Path.getError().message() << "\n";
return false;
}
std::string ErrMsg;
int result =
sys::ExecuteAndWait(*Path, Args.data(), nullptr, nullptr, 0, 0, &ErrMsg);
if (result) {
errs() << "error: lipo: " << ErrMsg << "\n";
return false;
}
return true;
}
bool generateUniversalBinary(SmallVectorImpl<ArchAndFilename> &ArchFiles,
StringRef OutputFileName,
const LinkOptions &Options) {
// No need to merge one file into a universal fat binary. First, try
// to move it (rename) to the final location. If that fails because
// of cross-device link issues then copy and delete.
if (ArchFiles.size() == 1) {
StringRef From(ArchFiles.front().Path);
if (sys::fs::rename(From, OutputFileName)) {
if (std::error_code EC = sys::fs::copy_file(From, OutputFileName)) {
errs() << "error: while copying " << From << " to " << OutputFileName
<< ": " << EC.message() << "\n";
return false;
}
sys::fs::remove(From);
}
return true;
}
SmallVector<const char *, 8> Args;
Args.push_back("lipo");
Args.push_back("-create");
for (auto &Thin : ArchFiles)
Args.push_back(Thin.Path.c_str());
// Align segments to match dsymutil-classic alignment
for (auto &Thin : ArchFiles) {
Thin.Arch = getArchName(Thin.Arch);
Args.push_back("-segalign");
Args.push_back(Thin.Arch.c_str());
Args.push_back("20");
}
Args.push_back("-output");
Args.push_back(OutputFileName.data());
Args.push_back(nullptr);
if (Options.Verbose) {
outs() << "Running lipo\n";
for (auto Arg : Args)
outs() << ' ' << ((Arg == nullptr) ? "\n" : Arg);
}
return Options.NoOutput ? true : runLipo(Args);
}
}
}
}
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