Flex /野牛目标不存在

Question

我在我的项目中有两个cmake文件的子目录结构。其中之一应该是一个编译器，使用Flex和野牛，但CMake的给我一个错误，我不很明白：

cmake_minimum_required(VERSION 2.8) 

project(leaf) 

add_subdirectory(leafc) 

，并在目录leafc：

find_package(BISON) 
find_package(FLEX) 

BISON_TARGET(LeafParser ${CMAKE_CURRENT_SOURCE_DIR}/parser.y ${CMAKE_CURRENT_BINARY_DIR}/parser.cpp) 
FLEX_TARGET(LeafScanner ${CMAKE_CURRENT_SOURCE_DIR}/lexer.l ${CMAKE_CURRENT_BIANRY_DIR}/lexer.cpp) 
ADD_FLEX_BISON_DEPENDENCY(LeafParser LeafScanner) 

include_directories(${CMAKE_CURRENT_BINARY_DIR}) 
add_executable(leafc main.cpp ${BISON_LeafParser_OUTPUTS} ${FLEX_LeafScanner_OUTPUTS}) 

，但我得到这个试图cmake .

CMake Error at /usr/share/cmake-2.8/Modules/FindFLEX.cmake:132 (MESSAGE): 
    Flex target `LeafParser' does not exists. 
Call Stack (most recent call first): 
    leafc/CMakeLists.txt:6 (ADD_FLEX_BISON_DEPENDENCY) 

CMake Error at /usr/share/cmake-2.8/Modules/FindFLEX.cmake:136 (MESSAGE): 
    Bison target `LeafScanner' does not exists. 
Call Stack (most recent call first): 
    leafc/CMakeLists.txt:6 (ADD_FLEX_BISON_DEPENDENCY) 

CMake Error at /usr/share/cmake-2.8/Modules/FindFLEX.cmake:139 (SET_SOURCE_FILES_PROPERTIES): 
    set_source_files_properties called with incorrect number of arguments. 
Call Stack (most recent call first): 
    leafc/CMakeLists.txt:6 (ADD_FLEX_BISON_DEPENDENCY) 

-- Configuring incomplete, errors occurred! 

当错误文件有：

├── CMakeLists.txt 
├── leafc 
│   ├── CMakeLists.txt 
│   ├── lexer.l 
│   ├── main.cpp 
│   └── parser.y 
└── README 

那么我做错了什么？

Answer 1

看来你刚刚把ADD_FLEX_BISON_DEPENDENCY的参数弄混了。尝试：

ADD_FLEX_BISON_DEPENDENCY(LeafScanner LeafParser) 

此外，还有一个错字在您的通话FLEX_TARGET（CMAKE_CURRENT_ BIANRY _DIR）。