Question

我从http://llvm.org/docs/GettingStarted.html开始遵循以下内容 - 已成功完成：

cd where-you-want-llvm-to-live
get the code
...
make

我将这些放在我的主目录中，所以我的结构看起来像

~/llvmHome/llvm/<souce code is here>
~/llvmHome/build/Debug+Asserts/bin/<clang++ executables etc are here>

我正在尝试按照http://llvm.org/docs/tutorial/LangImpl3.html上的步骤来构建示例。

我正在表演

cd ~/llvmHom/llvm/examples/Kaleidoscope/Chapter3 //so I'm where I checked out the source code

然后，我正在尝试：

~/llvmHome/build/Debug+Asserts/bin/clang++ -g -O3 toy.cpp `~/llvmHome/build/Debug+Asserts/bin/llvm-config --cppflags --ldflags --libs core` -o toy

这会发出警告，直至第一个错误

In file included from toy.cpp:1:
In file included from ~/llvmHome/llvm/include/llvm/IR/Verifier.h:24:
In file included from ~/llvmHome/llvm/include/llvm/ADT/StringRef.h:14:
~/llvmHome/llvm/include/llvm/Support/Allocator.h:82:42: warning: 'override' keyword is a C++11 extension [-Wc++11-extensions]
  virtual MemSlab *Allocate(size_t Size) override;
                                         ^
~/llvmHome/llvm/include/llvm/Support/Allocator.h:83:42: warning: 'override' keyword is a C++11 extension [-Wc++11-extensions]
  virtual void Deallocate(MemSlab *Slab) override;
                                         ^
In file included from toy.cpp:2:
In file included from ~/llvmHome/llvm/include/llvm/IR/DerivedTypes.h:21:
In file included from ~/llvmHome/llvm/include/llvm/IR/Type.h:19:
In file included from ~/llvmHome/llvm/include/llvm/ADT/APFloat.h:20:
In file included from ~/llvmHome/llvm/include/llvm/ADT/APInt.h:19:
In file included from ~/llvmHome/llvm/include/llvm/ADT/ArrayRef.h:14:
~/llvmHome/llvm/include/llvm/ADT/SmallVector.h:235:20: warning: rvalue references are a C++11 extension [-Wc++11-extensions]
  void push_back(T &&Elt) {
                   ^
~/llvmHome/llvm/include/llvm/ADT/SmallVector.h:187:15: error: no member named 'move' in namespace 'std'; did you mean simply 'move'?
      *Dest = ::std::move(*I);
              ^~~~~~~~~~~
              move

一些examaples建议使用g ++进行编译，尝试使用

g++ -g -O3 toy.cpp `~/llvmHome/build/Debug+Asserts/bin/llvm-config --cppflags --ldflags --libs core` -o toy
In file included from ~/llvmHome/llvm/include/llvm/ADT/StringRef.h:14:0,
                 from ~/llvmHome/llvm/include/llvm/IR/Verifier.h:24,
                 from toy.cpp:1:
~/llvmHome/llvm/include/llvm/Support/Allocator.h:82:40: warning: override controls (override/final) only available with -std=c++11 or -std=gnu++11 [enabled by default]
~/llvmHome/llvm/include/llvm/Support/Allocator.h:83:40: warning: override controls (override/final) only available with -std=c++11 or -std=gnu++11 [enabled by default]
In file included from ~/llvmHome/llvm/include/llvm/ADT/ArrayRef.h:14:0,
                 from ~/llvmHome/llvm/include/llvm/ADT/APInt.h:19,
                 from ~/llvmHome/llvm/include/llvm/ADT/APFloat.h:20,
                 from ~/llvmHome/llvm/include/llvm/IR/Type.h:19,
                 from ~/llvmHome/llvm/include/llvm/IR/DerivedTypes.h:21,
                 from toy.cpp:2:
~/llvmHome/llvm/include/llvm/ADT/SmallVector.h:235:20: error: expected ‘,’ or ‘...’ before ‘&&’ token

我不知道如何进一步调试这个问题，关于我的错误的任何想法？

我应该链接到〜/ llvmHome / build /下的库而不是源代码吗？

Answer 1

LLVM（和clang）最近切换到C ++ 11.所以，你需要有合理的编译器（例如clang或gcc 4.7+）并使用-std = c ++ 11 flag编译所有内容。

构建llvm示例

1 个答案: