使用cmake

Question

這裏沒有這樣的文件或目錄是C的文件夾層次++項目：

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。問題是，無論我有在main.cppFolderA/file1.h我有一個編譯問題：

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

但是，如果我註釋掉包括在main.cpp，它的工作原理。另外，如果我在file1.cpp中包含file2.h，那麼它的工作原理就是這樣，主要問題在於我將子目錄中的頭文件包含在來自其他子目錄的另一個頭文件中，並且其中一個包含在主文件中。

任何幫助，將不勝感激。

Answer 1

命令include_directories僅影響本地範圍：在FolderA正在發行它FolderA庫的編譯影響只。您需要在頂級CMakeLists.txt中發出該命令以編譯main.cpp。

或者，您可以在FolderA使用命令target_include_directories與PUBLIC選項：

target_include_directories(FolderA PUBLIC ../FolderB) 

所以包括目錄將被傳播到與該庫鏈接的任何目標。