无法为编译 SFML 项目创建 cmake 规则

Question

我有 build/CMakeLists.txt 文件：

cmake_minimum_required (VERSION 2.8)
project(Tetris)

include_directories(
    "headers"
)

set(SFML_DEPENDENCIES)
set(SFML_DEPENDENCIES ${SFML_SYSTEM_DEPENDENCIES} ${SFML_DEPENDENCIES})
set(SFML_DEPENDENCIES ${SFML_GRAPHICS_DEPENDENCIES} ${SFML_DEPENDENCIES})
set(SFML_DEPENDENCIES ${SFML_WINDOW_DEPENDENCIES} ${SFML_DEPENDENCIES})

set(CMAKE_CXX_COMPILER /usr/bin/g++-5)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -g")

set(EXECUTABLE_NAME "tetris")
file(GLOB SOURCES *.cpp)
add_executable(${EXECUTABLE_NAME} ${SOURCES})
target_link_libraries(${EXECUTABLE_NAME} ${SFML_LIBRARIES})

当我运行 cmake .. && make 时，屏幕上显示我没有包含 SFML 库的消息：

undefined reference to `sf::VertexArray::operator[](unsigned long)'
undefined reference to `sf::Keyboard::isKeyPressed(sf::Keyboard::Key)'

等等。我还尝试将标志包含到 CMAKE_CXX_FLAGS 变量中： -lsfml-graphics -lsfml-window -lsfml-system 它也不起作用。但如果我直接从控制台运行 g++，所有编译都很好：

g++-5 --std=c++11 -Wall main.cpp Game.cpp Window.cpp Board.cpp -lsfml-graphics -lsfml-window -lsfml-system

如果有什么不同，我会使用 Linux Mint。

Answer 1

你需要找到SFML包的位置，并添加包含目录和链接。

在您的 CMakeLists.txt 中：
更改此行：

target_link_libraries(${EXECUTABLE_NAME} ${SFML_LIBRARIES})

作者：

# Detect and add SFML
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake_modules" ${CMAKE_MODULE_PATH})
#Find any version 2.X of SFML
#See the FindSFML.cmake file for additional details and instructions
find_package(SFML 2 REQUIRED system window graphics)
if(SFML_FOUND)
  include_directories(${SFML_INCLUDE_DIR})
  target_link_libraries(${EXECUTABLE_NAME} ${SFML_LIBRARIES})
endif()

Source

已编辑：

对于 SFML v1，将 find_package 行更改为：

find_package(SFML 1 REQUIRED system window graphics)