CODEWITHSUNDEEP
c++cmake
ansa.sequence
ansa.sequence

Reputation: 16

Cannot build cmake project with including directories in cmake project

|---Engine
|----CMakeList.txt
|----Engine.cpp
|----Engine.h

|---Models
|----CMakeList.txt
|----Snake.cpp
|----Snake.hpp

|---Type
|----CMakeList.txt
|----Point.hpp

|---CMakeList.txt
|---main.cpp

I just can't tell the main sheet that I want to add a directory with files to it ...

Each time, errors of the following type appear:

CMake Error at CMakeLists.txt: 12 (target_include_directories):
  Cannot specify include directories for target "Snake" which is not built by
  this project.

CMake Error at CMakeLists.txt: 13 (target_link_directories):
  Cannot specify link directories for target "Snake" which is not built by
  this project.


CMake Error at Engine / CMakeLists.txt: 8 (target_include_directories):
  Cannot specify include directories for target "Snake" which is not built by
  this project.


CMake Error at CMakeLists.txt: 17 (target_link_libraries):
  Cannot specify link libraries for target "Snake" which is not built by this
  project.


- Configuring incomplete, errors occurred!

Which, for several hours of intensified attempts, are not corrected in any way. Can anyone help with this?

CMakeLists.txt from Engine folder:

set(HEADERS
        Engine.h)
set(SOURCES
        Engine.cpp)

add_library(Engine ${HEADERS} ${SOURCES})

target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_LIST_DIR})

Main CMakeList.txt:

cmake_minimum_required(VERSION 3.16.3)
project(Snake)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

set(PROJECT_SOURCES
        main.cpp
        )

target_include_directories(${PROJECT_NAME} PUBLIC Engine)
target_link_directories(${PROJECT_NAME} PUBLIC Engine)

add_subdirectory(Engine)

target_link_libraries(${PROJECT_NAME} Engine)




add_executable(${PROJECT_NAME}
        ${PROJECT_SOURCES}
        )

find_package(SFML 2.5.1 COMPONENTS graphics audio REQUIRED)
include_directories(${SFML_INCLUDE_DIR})
target_link_libraries(${PROJECT_NAME} sfml-graphics sfml-audio)
set(SFML_STATIC_LIBRARIES FALSE)

Upvotes: 0

Views: 2199

Answers (1)

ignacio
ignacio

Reputation: 1197

There are two errors. The first one is to call a PROJECT_NAME that hasn't been built yet. add_executable(${PROJECT_NAME} ...) and add_library(${PROJECT_NAME ...) should be used before the target_include_directories and target_link_directories that refers to it. Because, as @Stephen Newell noted, otherwise you will be using a PROJECT NAME that hasn't been declared/built yet.

The second error is that you are calling a PROJECT_NAME inside Engine/CMakeLists. Maybe you are missing a project(...) inside of it.

Maybe you should move set(SFML_STATIC_LIBRARIES FALSE) before linking it, as well.

Upvotes: 2

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