移植libjingle v0.5x for IOS(iphone device + iphone simulator)

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gtalk基本上可以算是非常好的聊天工具了，而它是如何工作的呢？我们如何在iphone上面为自己写一个gtalk玩一下呢？这一切都是基于libjingle这个库，这个Google Talk Voice and P2P interoperability Library.libjingle这个库是一个用c++写的跨平台的库，它能很好运行在win/mac os/linux(include android)/prosix 等平台，当然也能运行在iphone平台，毕竟ios也是unix系统，但是前面的几个平台可能并不需要对libjingle库做一些程序改动就可以很好的运行了，但是ios平台却不一样，因为libjingle库中对mac os的支持代码中，有一部分代码仅仅适用于mac os,并不适用于有众多限制的ios平台，所以其实如果想移植libjingle 到ios还是需要一些改动的，在下不才，顺利完成了这次移植，希望本文能够给你带来帮助，在些感谢libjingle project owner and ilibjingle project owner:

(转载请保留此文字：本文来源:移植libjingle v0.5x for IOS(iphone device + iphone simulator) http://blog.csdn.net/ipromiseu/archive/2011/01/14/6140115.aspx] write by Gray.Luo guohui.great@gmail.com)

一.environment setting:

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<1> First, install Python 2.4 or later from http://www.python.org/

<2> Second ,install the stand alone scons-local package 2.0.0 or later from

http://www.scons.org/download.php and set an environment variable,

SCONS_DIR, to point to the directory containing SCons:

for example:

$vim /User/gray/.profile

Enter the following content:

[c-sharp]  view plain copy  
 #set env of SCONS_DIR  
 export SCONS_DIR=/Users/anson/Documents/work/scons-local-2.0.1/scons-local-2.0.1/  

$sourece /User/gray/.profile

<3> Third, install swtoolkit from http://code.google.com/p/swtoolkit/.

We just download it into a place(eg:/User/gray/..../swtoolkit), It's a green tool.

<4>Finally, Libjingle depends on 3 open-source projects, expat , srtp and openssl.

Download expat from http://sourceforge.net/projects/expat/ to

talk/third_party/expat-2.0.1/.

Download srtp from http://libjingle.googlecode.com/files/srtp-cvs.zip to

talk/third_party/srtp/.

note:Don't download srtp from it's official website.only one google version can work for libjingle

Download openssl source code to

talk/third_party/openssl-1.0.0.

二. Modify Build Parameters

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1.Modify main.scons

[iphone Simulator]:

(1) Change

'-isysroot', '/Developer/SDKs/MacOSX10.5.sdk',

'-isysroot', '/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.2.sdk',

(2)Add the following content into # M A C OSX Block

mac_env.Replace(CC = '/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2')

mac_env.Replace(CXX = '/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/g++-4.2')

(3)Add 'CoreAudio', 'QuickTime', 'Cocoa', and 'QTKit' to the FRAMEWORKS variable.

[iphone Device]:

(1) Change

'-isysroot', '/Developer/SDKs/MacOSX10.5.sdk',

'-isysroot', '/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.2.sdk',

(2)Add the following content into # M A C OSX Block

mac_env.Replace(CC='/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2')

mac_env.Replace(CXX='/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/g++-4.2')

(3)Add 'CoreAudio', 'QuickTime', 'Cocoa', and 'QTKit' to the FRAMEWORKS variable.

(4)Change ['-arch','i386'] to  ['-arch', 'armv6'] in mac env setting,

2.Modify libjingle.scons

(1)Comment out some files with "#",because IOS SDK is limited ,So some api is unsupport by IOS:

# "base/macutils.cc",

# "session/phone/devicemanager_mac.mm",

# "base/proxydetect.cc",

(2)Add some Header serach directory in includedirs.

like:

"third_party/openssl-1.0.0/include",

三.Building libjingle:

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》》》How to build libjingle for iphone Simulator

$ cd libjingle-0.5/talk/third_party/srtp

$ ./configure

$ cd libjingle-0.5/talk/third_party/expat-2.0.1

$ ./configure

$ cd libjingle-0.5/talk/third_party/openssl-1.0.0

$ ./config no-shared no-asm

Build or Download openssl lib(libcrypto.a,libssl.a) for iphonesimulator to talk/build/dbg/lib

5.$/User/gray/..../swtoolkit/hammer.sh

》》》How to build libjingle for iphone

$cd libjingle-0.5/talk/third_party/srtp

$./configure --host=arm CC=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 CXX=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/g++-4.2

$cd libjingle-0.5/talk/third_party/expat-2.0.1

$./configure --host=arm CC=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 CXX=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/g++-4.2

$cd libjingle-0.5/talk/third_party/openssl-1.0.0

$./config no-shared no-asm

Build or Download openssl lib(libcrypto.a,libssl.a) for iphone device to talk/build/dbg/lib

5.$/User/gray/..../swtoolkit/hammer.sh

四.Modify libjingle source code

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Refrence : http://code.google.com/p/ilibjingle/

五.XCode setting

You can refrence http://code.google.com/p/ilibjingle/

1.Add libjingle.a path in Library Search Paths

2.Add some Header path in Header Search Paths

like:

/..../talk/third_party/srtp/crypto/include/
/..../talk/third_party/srtp/include/
/..../talk/third_party/expat-2.0.1/
/..../talk/third_party/openssl-1.0.0/include/
/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/ /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/ <Multiple values>

这里，我的修改结果为：

 /..../talk/third_party/srtp/crypto/include/ --ok
/..../talk/third_party/srtp/include/  --ok
/..../talk/third_party/expat-2.0.1/  --ok
/..../talk/third_party/openssl-1.0.0/include/  --ok  ----需要重命名
/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/ 
/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/

--instead--/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.0.sdk/System/Library/Frameworks/QuartzCore.framework/Headers
--instead--/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk/System/Library/Frameworks/QuartzCore.framework/Headers/
---comment --这里可以是5.0，没有试过，应该可以的

3.GCC_PREPROCESSOR_DEFINITIONS:

POSIX xOSX_USE_COCOA HAMMER_TIME=1 LOGGING=1 FEATURE_ENABLE_SSL FEATURE_ENABLE_VOICEMAIL FEATURE_ENABLE_PSTN HASHNAMESPACE=__gnu_cxx DISABLE_DYNAMIC_CAST HAVE_OPENSSL_SSL_H=1 OS_MACOSX=OS_MACOSX OSX _DEBUG FLAVOR_DBG ENABLE_DEBUG FEATURE_ENABLE_VOICEMAIL EXPAT_RELATIVE_PATH SRTP_RELATIVE_PATH XML_STATIC HAVE_EXPAT_CONFIG_H MAC_OS_X_VERSION_MIN_REQUIRED=1040

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