使用cmake

Question

这里没有这样的文件或目录是C的文件夹层次++项目：

1. FolderA 
    1. file1.h/cpp 
    2. CMakeLists.txt (CmakeA) 
2. FolderB 
    1. file2.h/cpp 
    2. CMakeLists.txt (CmakeB) 
3. main.cpp 
4. CMakeLists.txt (CmakeAll) 

CmakeA：

file(GLOB FolderA_FILES *.cpp *.h *.hpp) 

# add component 
add_library(FolderA ${FolderA_FILES}) 

include_directories(../FolderB) 
target_link_libraries(FolderA FolderB) 

CMakeB：

file(GLOB FolderB_FILES *.cpp *.h *.hpp) 

# add component 
add_library(FolderB ${FolderB_FILES}) 

CMakeAll：

cmake_minimum_required(VERSION 2.8) 

#add smirk dependency 
set(Smirk_DIR /usr/local CACHE PATH "Directory where Smirk has been installed (e.g. /usr/local).") 
include(${Smirk_DIR}/cmake/smirk.cmake) 
smirk_project(operatingTableProject) 
file(GLOB smirk_operatingTableProject_FILES *.cpp *.h *.hpp) 
add_executable(smirk_operatingTableProject ${smirk_operatingTableProject_FILES}) 

# install directives 
install(
    TARGETS smirk_operatingTableProject 
    RUNTIME DESTINATION bin 
) 

#add FolderB dependency 
add_subdirectory(FolderB) 
target_link_libraries(smirk_operatingTableProject FolderB) 

#add FolderA dependency 
add_subdirectory(FolderA) 
target_link_libraries(smirk_operatingTableProject FolderA) 

在file1.h我包括file2.h。问题是，无论我有在main.cppFolderA/file1.h我有一个编译问题：

file2.h: No such file or directory (in file1.h) 

但是，如果我注释掉包括在main.cpp，它的工作原理。另外，如果我在file1.cpp中包含file2.h，那么它的工作原理就是这样，主要问题在于我将子目录中的头文件包含在来自其他子目录的另一个头文件中，并且其中一个包含在主文件中。

任何帮助，将不胜感激。

Answer 1

命令include_directories仅影响本地范围：在FolderA正在发行它FolderA库的编译影响只。您需要在顶级CMakeLists.txt中发出该命令以编译main.cpp。

或者，您可以在FolderA使用命令target_include_directories与PUBLIC选项：

target_include_directories(FolderA PUBLIC ../FolderB) 

所以包括目录将被传播到与该库链接的任何目标。