[转] 在 Mac OS X 下编译 Objective-C 运行时

tiani

　　原文地址：http://www.mulle-kybernetik.com/weblog/2011/10/how_to_build_libobjc_for_os_x.html
　　Max OS X 版本：10.6.8
　　待编译运行时版本：437.3
　　刚刚自己试了一下，可以编译。
　　另：文章中提到头文件的包含路径为绝对路径，这样不好，可以改为相对路径，
　　比如：以 $(SRCROOT) 为参考。
　　附自己修改的工程打包：http://files.cnblogs.com/Proteas/objc-runtime_10.6.8_437.3.zip
　　下载后应该可以直接编译，有问题可以留言。
　　原文内容：
　　This builds and links and work for me, but it hasn't been tested much so I don't make any guarantees.
Preparation
　　Create a directory where to store all the stuff. I chose /usr/local/src/darwin-10.6.8.

prepare

sudo mkdir -p /usr/local/src/darwin-10.6.8 sudo chmod 777 /usr/local/src/darwin-10.6.8

Download and Unpack
　　Download the following packages:

• Libc-594.9.5.z
  
• dyld-132.13
  
• libauto-141.2
  
• libclosure-38
  
• libdispatch-84.5.5
  
• objc4-437.3.
  
• xnu-1504.15.3
  

download

cd /usr/local/src/darwin-10.6.8/ curl -O http://www.opensource.apple.com/tarballs/Libc/Libc-594.9.5.tar.gz curl -O http://www.opensource.apple.com/tarballs/dyld/dyld-132.13.tar.gz curl -O http://www.opensource.apple.com/tarballs/libauto/libauto-141.2.tar.gz curl -O http://www.opensource.apple.com/tarballs/libclosure/libclosure-38.tar.gz curl -O http://www.opensource.apple.com/tarballs/libdispatch/libdispatch-84.5.5.tar.gz curl -O http://www.opensource.apple.com/tarballs/objc4/objc4-437.3.tar.gz curl -O http://www.opensource.apple.com/tarballs/xnu/xnu-1504.15.3.tar.gz 　　tar xfz Libc-594.9.5.tar.gz tar xfz dyld-132.13.tar.gz tar xfz libauto-141.2.tar.gz tar xfz libclosure-38.tar.gz tar xfz libdispatch-84.5.5.tar.gz tar xfz objc4-437.3.tar.gz

　　You can also manually download stuff fromhttp://www.opensource.apple.com/release/mac-os-x-1068/.
Installation of Headers
　　Copy the needed headere into /usr/local/include/darwin-10.6.8. The versioning of the destination directory is important, otherwise you might get some strange bugs later on in life.

install

sudo mkdir -p /usr/local/include/darwin-10.6.8 sudo chmod 777 /usr/local/include/darwin-10.6.8 cd /usr/local/include/darwin-10.6.8 mkdir libkern mkdir System mkdir System/i386 mkdir System/ppc mkdir System/machine mkdir mach-o cd /usr/local/src/darwin-10.6.8 # find . -name "OSCrossEndian.h" # find . -name "pthread_machdep.h" # find . -name "dyld_priv.h" # find . -name "cpu_capabilities.h" # find . -name Block_private.h # find . -name auto_zone.h cp ./xnu-1504.15.3/libkern/libkern/OSCrossEndian.h /usr/local/include/darwin-10.6.8/libkern/ cp ./Libc-594.9.5/pthreads/pthread_machdep.h /usr/local/include/darwin-10.6.8/System/ cp ./dyld-132.13/include/mach-o/dyld_priv.h /usr/local/include/darwin-10.6.8/mach-o/ cp ./xnu-1504.15.3/osfmk/i386/cpu_capabilities.h /usr/local/include/darwin-10.6.8/System/i386/ cp ./xnu-1504.15.3/osfmk/ppc/cpu_capabilities.h /usr/local/include/darwin-10.6.8/System/ppc/ cp ./xnu-1504.15.3/osfmk/machine/cpu_capabilities.h /usr/local/include/darwin-10.6.8/System/machine/ cp ./libclosure-38/Block_private.h /usr/local/include/darwin-10.6.8/ cp ./libauto-141.2/auto_zone.h /usr/local/include/darwin-10.6.8/

Change the Xcode Project of objc
　　open objc4-437.3/*.xcodeproj
　　Open the project settings in Xcode and set:

• HEADER_SEARCH_PATHS=/usr/local/include/darwin-10.6.8 $(inherited) for all Configurations
  
• GCC_PREPROCESSOR_DEFINITIONS=$(inherited) PRIVATE for Debug and
  
• GCC_PREPROCESSOR_DEFINITIONS=$(inherited) NDEBUG PRIVATE for Release
  

　　But this isn't good enough yet. Fix the objc target settings by prefixing $(inherited) toHEADER_SEARCH_PATHS thusly

• HEADER_SEARCH_PATHS = $(inherited) $(DSTROOT)/usr/include/** $(DSTROOT)/usr/local/include/** $(CONFIGURATION_BUILD_DIR)/usr/include/** $<(CONFIGURATION_BUILD_DIR)/usr/local/include/**
  

　　Then you should go into the objc target's Compile sources settings and move the fileobjc-probes.d to the top, so that it gets compiled first.
　　And now it should build and link without errors.
　　Go ahead and trash your system with the debug linked version :)