Integrations (PTC products, 3rd party products and code) > Code integration (Ada, ARINC 653, C, C#, C++, IDL, Java, SQL and VB) > C Code > Reverse engineering legacy C code > Working with precompiled header files > Making the reverser use a precompiled header (C code)
  
Making the reverser use a precompiled header (C code)
You can make the Reverser use (or build if necessary) a precompiled header file when parsing files through the Reverser user interface.
The Reverser parses code files when reverse engineering code and generating code with preserved body code.
To make the Reverseruse a precompiled header:
1. On the Reverse Engineering Options 1 page of the Reverser, ensure that the header file from which you want to build the precompiled header file is first in the list.
2. Select the Use PCH File check box.