F1027 Unit not found: 'System.pas'

原因是因为dcc32.cfg 文件信息错误：
http://www.devexpress.com/support/center/Question/Details/B96459

As you probably know, the Express Install uses the command-line compiler (dcc32.exe) to create the libraries of our components. As a rule, such errors occur if the information in your dcc32.cfg file is wrong. Please find this file in the <BCB6>\Bin folder, open it and make sure that it contains the following strings:

-aWinTypes=Windows;WinProcs=Windows;DbiProcs=BDE;DbiTypes=BDE;DbiErrs=BDE
-u"C:\Program Files\Borland\BDS\4.0\lib";"C:\Program Files\Borland\4DS\5.0\lib\Obj"

Add the missing data, if necessary (use your actual paths in the second string). Finally, run the Express Install in Recompile mode.

Hopefully, this will help you overcome the problems. Please keep us informed about your progress.

P.S. We discussed this problem in other Support Center reports. For example, Q108897 ("system.pas not found").

解决方案：
第一步，先加上：
$(BDS)\lib;$(BDS)\Imports;$(BDS)\Lib\Indy10;$(BDSCOMMONDIR)\Dcp;$(BDS)\include;$(BDS)\RaveReports\Lib

第二步，2009再加上
C:\Program Files\CodeGear\RAD Studio\6.0\lib

第二步，XE 再加上：
C:\Program Files\Embarcadero\RAD Studio\8.0\lib\win32\debug
C:\Program Files\Embarcadero\RAD Studio\8.0\lib\win32\release

其它版本以此类推

$(BDSLIB)\$(Platform)\release
$(BDSUSERDIR)\Imports
$(BDS)\Imports
$(BDSCOMMONDIR)\Dcp
$(BDS)\include