用raylib静态库编译项目

Question

我正在尝试用Raylib库创建一个游戏。到目前为止，我只是在main.cpp中尝试，并且总是在终端中用这一行编译我的代码。

clang -std=c++11 -framework CoreVideo -framework IOKit -framework Cocoa -framework GLUT -framework OpenGL  libraylib.a main.cpp -o my_app

现在我想重新创建蛇游戏只是为了好玩。我认为我会明智地将main.cpp溢出到多个src文件中，但实际上我不知道该如何编译所有这些。我试图创建这样一个CMakeList.txt：

cmake_minimum_required (VERSION 3.0)

set(CMAKE_BUILD_TYPE Debug)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -framework CoreVideo")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -framework IOKit")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -framework Cocoa")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -framework GLUT")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -framework OpenGL")

project(Snake)

add_executable(
    Snake
    main.cpp
    Snake.cpp
)
target_link_libraries(main ${CMAKE_SOURCE_DIR}/librarylib.a)

但这不管用。这是错误消息。

  CMake Error at CMakeLists.txt:18 (target_link_libraries):
  Cannot specify link libraries for target "main" which is not built by this
  project.


-- Configuring incomplete, errors occurred!

是否有更好的方法来编译这个项目，有人能向我解释-framework标志的实际作用吗？我仍然想使用VSCode，因为我想学习如何更好地使用终端。

编辑:信息表格brew ls --verbose raylib

/usr/local/Cellar/raylib/2.5.0/LICENSE.md
/usr/local/Cellar/raylib/2.5.0/INSTALL_RECEIPT.json
/usr/local/Cellar/raylib/2.5.0/.brew/raylib.rb
/usr/local/Cellar/raylib/2.5.0/CHANGELOG
/usr/local/Cellar/raylib/2.5.0/include/raylib.h
/usr/local/Cellar/raylib/2.5.0/HISTORY.md
/usr/local/Cellar/raylib/2.5.0/README.md
/usr/local/Cellar/raylib/2.5.0/lib/pkgconfig/raylib.pc
/usr/local/Cellar/raylib/2.5.0/lib/cmake/raylib/raylib-config-version.cmake
/usr/local/Cellar/raylib/2.5.0/lib/cmake/raylib/raylib-config.cmake
/usr/local/Cellar/raylib/2.5.0/lib/libraylib.2.5.0.dylib
/usr/local/Cellar/raylib/2.5.0/lib/libraylib.2.dylib
/usr/local/Cellar/raylib/2.5.0/lib/libraylib.a
/usr/local/Cellar/raylib/2.5.0/lib/libraylib.dylib

Answer 1

通过这样设置我的CMakeLists.txt来解决这个问题：

cmake_minimum_required(VERSION 3.0)
project(Snake)


set (CMAKE_CXX_STANDARD 11)
# Executable & linking
add_executable(${PROJECT_NAME} main.cpp snake.cpp)
if (NOT TARGET raylib)
  find_package(raylib 2.5.0 REQUIRED)
endif()
target_link_libraries(${PROJECT_NAME} raylib)

Answer 2

您希望将可执行文件链接到librarylib.a。可执行文件的目标名称是Snake。

如果我们看一下错误：

无法为目标"main“指定链接库，该链接库不是由该项目构建的。

实际上，您从未添加过名为main的库或可执行文件。

这就是您的target_link_libraries调用中应该显示的内容：

target_link_libraries(Snake PUBLIC "${CMAKE_SOURCE_DIR}/librarylib.a")