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[英]CMake target_include_directories does not find #include of private header
[英]CMake target_include_directories: Do I use PUBLIC, PRIVATE or INTERFACE?
我有一個 CMake 庫add_library(helpers helpers.h)
並且我想通過target_include_directories
包含源文件。 然后我必須在參數PRIVATE
、 PUBLIC
和INTERFACE
之間進行選擇。
有什么區別?
PRIVATE
:包含只能由助手庫本身使用。PUBLIC
:helpers-library 本身和使用 helpers-library 的任何目標都可以使用包含,例如通過target_link_libraries(MainApplication PUBLIC libhelpers)
。INTERFACE
: helpers-library 不能使用包含,只能由使用 helpers-library 的目標使用。此示例說明了可能的導入。 結構:
│ CMakeLists.txt
│ helper.cpp
│ main.cpp
│
├───details_interface
│ details_interface.cpp
│
├───details_private
│ details_private.cpp
│
└───details_public
details_public.cpp
CMakeLists.txt:
cmake_minimum_required(VERSION 3.1)
set(CMAKE_CXX_STANDARD 17)
project(cmake_experiment)
add_executable(cmake_experiment main.cpp)
target_link_libraries(cmake_experiment libhelper)
add_library(libhelper helper.cpp)
target_include_directories(libhelper
INTERFACE details_interface
PUBLIC details_public
PRIVATE details_private)
主.cpp:
#include <iostream>
#include "details_public.cpp"
#include "details_interface.cpp"
// fatal error: details_private.cpp: No such file or directory:
// #include "details_private.cpp"
int main() {
std::cout << "Hello, World!" << std::endl;
return 0;
}
助手.cpp:
#include "details_public.cpp"
#include "details_private.cpp"
// fatal error: details_interface.cpp: No such file or directory:
// #include "details_interface.cpp"
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