使用 CMake 为 iOS 编译 [英] Compiling for iOS with CMake

问题描述

我使用 CMake 作为我的构建工具编译了一个 C++ 静态库，我想将它链接到我的 iOS 应用程序.
我在 Xcode 中创建了一个简单的空"应用程序，并将名为 libengine.a 的库链接到它.
我试图编译我的 iOS 项目，但链接器给了我这个警告:

I've compiled a C++ static library by using CMake as my building tool and I want to link it to my iOS app.
I created a simple 'Empty' application in Xcode and linked my library called libengine.a to it.
I tried to compile my iOS project and the linker gave me this warning:

ignoring file /Users/.../build/engine/libengine.a, 
file was built for archive which is not the architecture being linked (i386):
/Users/.../build/engine/libengine.a

据我所知，我需要为 ARM 处理器编译我的库.问题是我不知道怎么做.
我认为 CMake 确实缺乏好的教程.
无论如何，我的 CMake 脚本附在下面.

任何帮助将不胜感激.
谢谢，塔尔.

这是我的主要 CMake 脚本:

As I understand it, I need to compile my library for ARM processors. The problem is I don't know how.
I think CMake really lacks good tutorials.
Anyways, my CMake scripts are attached below.

Any help would be greatly appreciated.
Thanks, Tal.

Here is my main CMake script:

cmake_minimum_required(VERSION 2.8)

project(movie-night)

if (DEFINED PLATFORM)
    include(toolchains/ios.cmake)
endif()

add_definitions(-Wall)

set(DEBUG)

if (DEFINED DEBUG)
    add_definitions(-g)
endif()

if (DEFINED RELEASE)
    add_definitions(-O3)
endif()

add_subdirectory(engine)
add_subdirectory(ui)

add_subdirectory(test)

这是我的工具链/ios.cmake 文件:

Here is my toolchains/ios.cmake file:

set(CMAKE_SYSTEM_NAME Darwin)
set(CMAKE_SYSTEM_PROCESSOR arm)

推荐答案

只需使用这个工具链文件:http://code.google.com/p/ios-cmake/ 并将其用作

Just use this toolchain file: http://code.google.com/p/ios-cmake/ and use it as

cmake -DCMAKE_TOOLCHAIN_FILE=path_to_your_toolchain_file

然后，在CMakeLists.txt中:

SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -arch armv7")
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -arch armv7")

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