| 此帖純粹討論怎樣更改xcode配置來使其支援建立iphone上的dylib工程檔案，不涉及任何其他破解話題！ 測試機器：10.6 with Xcode3.2 最近在研究如何建立iphone上的dylib檔案，google出來的都是toolchain的東西，使用makefile來編譯的，像我這種習慣IDE的人來說非常之不爽，所以花了一天時間來破解了下Xcode來讓它可以建立編譯iphone上的dylib檔案的工程。 簡單說下分析思路吧 首先xcode支援建立iphone static libtary和Cocoa的dynamic linrary的工程，通過不同編譯對比可以發現Xcode通過productType = "com.apple.product-type.library.dynamic";配置來確定工程類型的。
開啟**.xcodeproj/project.pbxproj檔案，搜尋productType=定位，可以發現如所示的內容
[attachment=10545]
可以建立一個iphone的static工程把static改成dynamic編譯看看，可以發現xcode提示不支援dynamic類型的工程，無法編譯，那我們讓他支援就好了。 我們需要修改以下檔案
/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Specifications/iPhoneOSProductTypes.xcspec
/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Specifications/iPhoneOSPackageTypes.xcspec
在iPhoneOSProductTypes.xcspec中添加下列片段 // Dynamic library
{ Type = ProductType;
Identifier = com.apple.product-type.library.dynamic;
Class = PBXStaticLibraryProductType;
Name = "Dynamic Library";
Description = "Dynamic library";
IconNamePrefix = "TargetLibrary";
DefaultTargetName = "Dynamic Library";
DefaultBuildProperties = {
FULL_PRODUCT_NAME = "$(EXECUTABLE_NAME)";
MACH_O_TYPE = "mh_dylib";
REZ_EXECUTABLE = YES;
EXECUTABLE_PREFIX = "";
EXECUTABLE_SUFFIX = ".$(EXECUTABLE_EXTENSION)";
EXECUTABLE_EXTENSION = "dylib";
PUBLIC_HEADERS_FOLDER_PATH = "/usr/local/include";
PRIVATE_HEADERS_FOLDER_PATH = "/usr/local/include";
INSTALL_PATH = "/usr/local/lib";
DYLIB_INSTALL_NAME_BASE = "$(INSTALL_PATH)";
LD_DYLIB_INSTALL_NAME = "$(DYLIB_INSTALL_NAME_BASE:standardizepath)/$(EXECUTABLE_PATH)";
DYLIB_COMPATIBILITY_VERSION = "1";
DYLIB_CURRENT_VERSION = "1";
FRAMEWORK_FLAG_PREFIX = "-framework";
LIBRARY_FLAG_PREFIX = "-l";
LIBRARY_FLAG_NOSPACE = YES;
STRIP_STYLE = "debugging";
GCC_INLINES_ARE_PRIVATE_EXTERN = YES;
CODE_SIGNING_ALLOWED = NO;
};
PackageTypes = (
com.apple.package-type.mach-o-library // default
);
}, 在iPhoneOSPackageTypes.xcspec中添加下列片段 // Mach-O dynamic library
{ Type = PackageType;
Identifier = com.apple.package-type.mach-o-library;
Name = "Mach-O Dynamic Library";
Description = "Mach-O dynamic library";
DefaultBuildSettings = {
EXECUTABLE_PREFIX = "";
EXECUTABLE_SUFFIX = ".dylib";
EXECUTABLE_NAME = "$(EXECUTABLE_PREFIX)$(PRODUCT_NAME)$(EXECUTABLE_VARIANT_SUFFIX)$(EXECUTABLE_SUFFIX)";
EXECUTABLE_PATH = "$(EXECUTABLE_NAME)";
};
ProductReference = {
FileType = compiled.mach-o.dylib;
Name = "$(EXECUTABLE_NAME)";
IsLaunchable = NO;
};
}, 檔案附上，可以直接下載替換，替換/修改前做好備份
[attachment=10546] 現在再編譯應該不會提示工程不支援了，那麼剩下的就是改變其編譯選項了，就是libtool的參數問題。
我們需要修改下列檔案
/Developer/Library/Xcode/Plug-ins/CoreBuildTasks.xcplugin/Contents/Resources/Libtool.xcspec
/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Plug-ins/iPhoneOS Build System Support.xcplugin/Contents/Resources/iPhoneLinkerOptions.xcspec
在Libtool.xcspec中添加下列片段 { Identifier = com.apple.pbx.linkers.libtooldynamic;
Type = Linker;
Class = PBXLinkerSpecificationLibtool;
Name = "Libtool";
Description = "Create a dynamic library using Apple Mach-O Librarian (libtool)";
IsAbstract = Yes; // This is an internal tool, so we keep it out of the user interface
BinaryFormats = (mach-o);
Architectures = (ppc, ppc7400, ppc7450, ppc970, ppc64, i386, x86_64);
CommandLine = "$(LIBTOOL) -dynamic -arch_only $(arch) -compatibility_version $(DYLIB_COMPATIBILITY_VERSION) -current_version $(DYLIB_CURRENT_VERSION) [options] [special-args] -o $(OutputPath)"; // 'special-args' includes the input files
RuleName = "Libtool $(OutputPath) $(variant) $(arch)";
ExecDescription = "Create Dynamic Library $(OutputPath:file)";
InputFileTypes = (
compiled.mach-o.objfile
);
Outputs = (
// We're a linker-like task, so we expect to be given an output path in 'OutputPath'.
"$(OutputPath)"
);
CommandOutputParser = XCGccCommandOutputParser;
Options = (
// LIBTOOL
{ Name = LIBTOOL;
Type = Path;
DefaultValue = "$(PLATFORM_DEVELOPER_BIN_DIR)/libtool";
}, // SDK
{ Name = SDKROOT;
Type = Path;
CommandLineFlag = "-syslibroot";
IsInputDependency = Yes;
}, // Search paths
{ Name = LIBRARY_SEARCH_PATHS;
Type = PathList;
FlattenRecursiveSearchPathsInValue = Yes; // causes any paths that have a '/**' suffix to be replaced with matching paths
CommandLinePrefixFlag = "-L";
}, // Input file lists
{ Name = __INPUT_FILE_LIST_PATH__;
Type = Path;
DefaultValue = "$(LINK_FILE_LIST_$(variant)_$(arch))"; // this is set up for us as a read-only property
CommandLineFlag = "-filelist";
IsInputDependency = Yes;
},
{ Name = auxiliary_file_lists;
Type = PathList;
CommandLineFlag = "-filelist";
IsInputDependency = Yes;
}, // Various flags
{ Name = ALL_OTHER_LIBTOOLFLAGS;
Type = StringList;
DefaultValue = "$(LD_FLAGS) $(SECTORDER_FLAGS) $(OTHER_LDFLAGS) $(OTHER_LDFLAGS_$(variant)) $(OTHER_LDFLAGS_$(arch)) $(OTHER_LDFLAGS_$(variant)_$(arch)) $(OTHER_LIBTOOLFLAGS) $(OTHER_LIBTOOLFLAGS_$(variant)) $(OTHER_LIBTOOLFLAGS_$(arch)) $(OTHER_LIBTOOLFLAGS_$(variant)_$(arch)) $(PRODUCT_SPECIFIC_LIBTOOLFLAGS)";
CommandLinePrefixFlag = "";
},
{ Name = EXPORTED_SYMBOLS_FILE;
Type = Path;
Condition = "$(SEPARATE_SYMBOL_EDIT) == NO";
CommandLineFlag = "-exported_symbols_list";
IsInputDependency = Yes;
},
{ Name = UNEXPORTED_SYMBOLS_FILE;
Type = Path;
Condition = "$(SEPARATE_SYMBOL_EDIT) == NO";
CommandLineFlag = "-unexported_symbols_list";
IsInputDependency = Yes;
},
{ Name = AdditionalCommandLineArguments;
Type = StringList;
CommandLinePrefixFlag = "";
}, { Name = MACOSX_DEPLOYMENT_TARGET;
Type = String;
SetValueInEnvironmentVariable = "MACOSX_DEPLOYMENT_TARGET";
},
);
}, 在iPhoneLinkerOptions.xcspec中搜尋
BasedOn = "default:com.apple.pbx.linkers.libtool";
替換成
BasedOn = "default:com.apple.pbx.linkers.libtooldynamic";
這樣修改後編譯iphone的library工程師都會使用dynamic的參數來編譯，
注意：如果要編譯iphone static library這裡需要將libtooldynamic修改回libtool並重啟Xcode（唯一的小缺陷，應該可以通過hook xcode編譯設定函數來動態修改，很麻煩，需要很多時間去找到相應的方法，找了一會兒就沒高興繼續，先將就用吧） 做好以上工作後就可以建立並編譯iphone上dynamic library的工程了。
這裡附上工程和target模板檔案
[attachment=10547]
解壓此zip得到Cocoa Touch Dynamic Library檔案夾，將其放到
/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Project Templates/Library/下面 [attachment=10548]
解壓此zip得到Dynamic Library.trgttmpl檔案，將其放到
/Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Target Templates/Cocoa Touch/下面 重啟Xcode就可以看到了，
[attachment=10549] [attachment=10550] 測試結果
[attachment=10551]
使用otool查看編譯出來的dylib檔案
[attachment=10552] 成功！
謹記！！！！！需要修改檔案來切換回編譯static library！！！ |
