LLVM:OSX上的优化加载失败

Question

我正在尝试运行此LLVM检测项目,但我只能在Linux下加载检测优化.

我在OSX上编译并安装了LLVM 3.2和Clang 3.2,并且在Linux中具有相同的版本.

当我尝试在Linux中运行时:

command opt -load ./obj/llvminstrument/libllvminstrument.so -help |grep instrum
    -insert-edge-profiling                     - Insert instrumentation for edge profiling
    -insert-gcov-profiling                     - Insert instrumentation for GCOV profiling
    -insert-optimal-edge-profiling             - Insert optimal instrumentation for edge profiling
    -insert-path-profiling                     - Insert instrumentation for Ball-Larus path profiling
    -instrument_block                          - Injects block instrumentation instructions
    -instrument_function                       - Injects function instrumentation instructions
    -instrument_prepare                        - Prepares instrumentation instructions

OSX中的相同命令:

command opt -load ./obj/llvminstrument/libllvminstrument.dylib -help |grep instrum    ?········
opt: CommandLine Error: Argument 'track-memory' defined more than once!                                                  ?········
opt: CommandLine Error: Argument 'debug-buffer-size' defined more than once!                                             ?········
opt: CommandLine Error: Argument 'print-all-options' defined more than once!                                             ?········
opt: CommandLine Error: Argument 'print-options' defined more than once!                                                 ?········
opt: CommandLine Error: Argument 'print-after-all' defined more than once!                                               ?········
opt: CommandLine Error: Argument 'print-before-all' defined more than once!                                              ?········
opt: CommandLine Error: Argument 'track-memory' defined more than once!                                                  ?········
opt: CommandLine Error: Argument 'debug-buffer-size' defined more than once!                                             ?········
opt: CommandLine Error: Argument 'print-all-options' defined more than once!                                             ?········
opt: CommandLine Error: Argument 'print-options' defined more than once!                                                 ?········
opt: CommandLine Error: Argument 'print-after-all' defined more than once!                                               ?········
opt: CommandLine Error: Argument 'print-before-all' defined more than once!                                              ?········
    -insert-edge-profiling                     - Insert instrumentation for edge profiling                               ?········
    -insert-gcov-profiling                     - Insert instrumentation for GCOV profiling                               ?········
    -insert-optimal-edge-profiling             - Insert optimal instrumentation for edge profiling                       ?········
    -insert-path-profiling                     - Insert instrumentation for Ball-Larus path profiling

Answer 1

我不确切知道如何解决这个问题，但问题是您将几个核心 LLVM 库静态链接到仪器 dylib 中，其方式与 opt 驱动程序“dlopen”不兼容。因此，当您打开它时，您会得到各种命令行参数的重复全局变量。这可能与 LLVM 关系不大，更多地与 OS X 上使用的特定构建过程有关，对于符号和/或共享与静态链接的可见性有不同的默认值。