如何设置CMake为iPhone构建一个应用程序 [英] How to set up CMake to build an app for the iPhone

问题描述

这与我的以前的问题，这是关于使用CMake在iPhone上构建静态库。我有工作设置 CMAKE_OSX_SYSROOT 。

This is closely related to my previous question, which was about using CMake to build a static library on the iPhone. I got that to work setting the CMAKE_OSX_SYSROOT.

但是，这不能构建一个应用程序。我的 CMakeLists.txt 看起来像：

However, this doesn't work to build an app. My CMakeLists.txt looks like:

project(TEST)

set(CMAKE_OSX_SYSROOT iphoneos2.2.1)
set(CMAKE_OSX_ARCHITECTURES "$(ARCHS_STANDARD_32_BIT)")
set(CMAKE_EXE_LINKER_FLAGS
"-framework Foundation -framework OpenGLES -framework AudioToolbox -framework CoreGraphics -framework QuartzCore -framework UIKit -framework OpenAL"
)

set(SRC --my files--)

add_executable(iphone-test MACOSX_BUNDLE ${SRC})

几个备注：

• 我明确给出 -framework 链接选项，因为 find_library 对于所有的框架（它发现大多数，但不是 OpenGLES ）。我不明白为什么，因为他们都在同一个文件夹 $ {SDK} / System / Library / Frameworks 。


• 我将 MACOSX_BUNDLE 添加到了 add_executable 命令，以使生成的产品类型 com.apple.product-type.application 而不是 com.apple.product-type.tool ，它显然不存在于iPhone上。

• I'm explicitly giving the -framework linking option because find_library didn't work for all of the frameworks (it found most of them, but not OpenGLES). I don't understand why, since they're all in the same folder ${SDK}/System/Library/Frameworks. This leads me to believe that I was doing something wrong, but I don't know what.
• I added MACOSX_BUNDLE to the add_executable command so that the product type generated would be com.apple.product-type.application instead of com.apple.product-type.tool, which apparently doesn't exist on the iPhone.

在任何情况下，应用程序编译和链接正确，但当我在模拟器中运行它，我得到了可怕的

In any case, the app compiles and links correctly, but when I run it in the simulator, I get the dreaded

Failed to launch simulated application: Unknown error.

google和stackoverflow上有很多报告的这个问题的实例，或创建新项目和移动文件;

There are lots of reported instances of this problem on google and stackoverflow, but all of the solutions involve cleaning up or creating a new project and moving files; but I'm compiling a fresh copy after CMake does its work, so none of that applies.

我发现这个线程在CMake邮件列表上，但它只报告成功建立一个库，然后出来。 / p>

I found this thread on the CMake mailing list, but it only reports a success in building a library, and then peters out.

推荐答案

我终于找到了如何做到这一点。这是我的 CMakeLists.txt 文件看起来像：

I finally figured out how to do this. Here's what my CMakeLists.txt file looks like:

project(test)
set(NAME test)

file(GLOB headers *.h)
file(GLOB sources *.cpp)

set(CMAKE_OSX_SYSROOT iphoneos2.2.1)
set(CMAKE_OSX_ARCHITECTURES $(ARCHS_STANDARD_32_BIT))
set(CMAKE_CXX_FLAGS "-x objective-c++")
set(CMAKE_EXE_LINKER_FLAGS
    "-framework AudioToolbox -framework CoreGraphics -framework QuartzCore -framework UIKit"
)
link_directories(\${HOME}/\${SDKROOT}/lib)

set(MACOSX_BUNDLE_GUI_IDENTIFIER "com.mycompany.\${PRODUCT_NAME:identifier}")
set(APP_TYPE MACOSX_BUNDLE)

add_executable(${NAME}
    ${APP_TYPE}
    ${headers}
    ${sources}
)

target_link_libraries(${NAME}
    # other libraries to link
)

# code signing
set_target_properties(${NAME} PROPERTIES XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY "iPhone Developer: My Name")

将 mycompany 更改为您的公司名称，并将我的名称更改为您的姓名。我发现添加链接目录 \ $ {HOME} / \ $ {SDKROOT} / lib 是非常有用的，如果你的应用程序链接到一个静态库（尤其是通用（非iPhone）库），您可以构建单独的iPhoneOS和iPhoneSimulator库，并轻松链接到正确的，而不是担心一个通用的二进制。

Obviously, change mycompany to your company name, and change My Name to your name. I found it's very useful to add the link directory \${HOME}/\${SDKROOT}/lib as above, so that if your app links to a static library (especially a generic (non-iPhone) library), you can build separate iPhoneOS and iPhoneSimulator libraries and easily link to the right one, instead of worrying about a universal binary.

另外，Xcode似乎没有正确添加资源，当你使用CMake构建项目，所以我添加这一块到 CMakeLists.txt 文件。它将整个文件夹 / data 复制到我的资源文件夹中（就好像我在Xcode中添加了一个蓝色文件夹链接）。

Also, Xcode doesn't seem to properly add resources when you build the project using CMake, so I added this piece to the CMakeLists.txt file. It copies the entire folder /data into my resources folder (as if I had added a "blue" folder link in Xcode).

# copy resource phase

set(APP_NAME \${TARGET_BUILD_DIR}/\${FULL_PRODUCT_NAME})
set(RES_DIR ${test_SOURCE_DIR}/data)
add_custom_command(
    TARGET ${NAME}
    POST_BUILD
    COMMAND /Developer/Library/PrivateFrameworks/DevToolsCore.framework/Resources/pbxcp -exclude .DS_Store -exclude CVS -exclude .svn -resolve-src-symlinks ${RES_DIR} ${APP_NAME}
)

这篇关于如何设置CMake为iPhone构建一个应用程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！