Xcode给我’Obstructing’警告,因为我不再使用SVN,切换到Perforc

我大约一年前在Xcode 3.x.y(iOS项目)开始了一个新项目,一切进展顺利,但我想使用某种源代码控制.我在网站上听说过SVN,所以我试了一下,把存储库放在USB外置硬盘上.一切都很顺利,然后我决定切换到Perforce,因为项目中的其他人已经习惯了.在这之后我格式化usb硬盘驱动器以将其用于其他目的.

快进到上周：我安装了Xcode 4.x,我在构建时收到各种警告.我得到的2是：

game_name.app.dSYM
Obstructing
file://localhost/projects/game_name/build/Release-iphonesimulator/game_name.app.dSYM/:
warning: Obstructing: /projects/game_name/build/Release-iphonesimulator/game_name.app.dSYM is blocking item under version control

和

fx_swish_01.wav
Missing File
/projects/game_name/fx_swish_01.wav
file://localhost/projects/game_name/fx_swish_01.wav: warning: Missing file: /projects/game_name/fx_swish_01.wav is missing from working copy

这是2个错误,但我总共有113个(大约10个阻塞,100个缺失).我假设这是因为该项目仍然认为我正在使用SVN作为我的SCM,而实际上我只使用来自Xcode之外的perforce.

有没有人知道我需要做什么？我不关心文件是否被破坏,被忽略,删除,等等……我拥有我认为需要的所有内容.提前致谢.

编辑：
我通过执行以下操作得到了一些“工作副本失踪”警告：svn delete –force.这会不会让我迟到？我无法提交,但确实删除了警告.这是我所做的一个副本：

$svn delete fx_swish_01.wav 
svn: Use --force to override this restriction
svn: 'fx_swish_01.wav' has local modifications

$svn delete fx_swish_01.wav --force
D fx_swish_01.wav

$svn commit -m "deleted fx_swish_01.wav"
svn: Commit failed (details follow):
svn: Directory '/projects/game_name/build/Release-iphonesimulator/game_name.app.dSYM/.svn' containing working copy admin area is missing

$svn delete fx_swish_02.wav 
D fx_swish_02.wav

$svn delete fx_swish_03.wav 
D fx_swish_03.wav

$svn delete fx_swish_04.wav 
D fx_swish_04.wav

$svn delete hey_what_a_crowd.mp3
D hey_what_a_crowd.mp3

$cd build/Release-iphonesimulator/

$ls
game_name.app       game_name.app.dSYM  game_name.app_old.dSYM

$svn delete game_name.app.dSYM
svn: Directory 'game_name.app.dSYM/.svn' containing working copy admin area is missing

$svn delete game_name.app.dSYM --force
D game_name.app.dSYM
svn: Directory 'game_name.app.dSYM/.svn' containing working copy admin area is missing

正如你所看到的,我删除了.wav文件,它似乎不再给我这些警告了. game_name.app.dSYM瘦无法正常工作…管理区域丢失了？我确定这个文件是否存在于某一点,它肯定不再存在了.