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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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─────C/C++ Compiler─────────────────────────────────────────────────────────
 
     Syntax:  /Yc[filename]
 
     The /Yc option instructs the compiler to create a precompiled
     header (.PCH) file that represents the state of compilation at a
     certain point. No space is allowed between /Yc and <filename>.
 
     The default action of /Yc is to compile the entire source file,
     including every included header file. The state of the compilation
     is saved to a file with the base name of the source file and a .PCH
     extension. Because precompilation is most useful for compiling a
     stable body of code for use with a body of code that is under
     development, you will want to focus the precompilation process by
     using /Yc with its <filename> argument or by putting a hdrstop
     pragma in your source file.
     See: ◄hdrstop pragma►
          ◄Naming an Alternate .PCH Filename►
 
     The optional <filename> argument instructs the compiler to
     precompile all code up to and including the file specified by
     <filename>; the specified file must be one that is included in your
     source file using an #include directive. The compiled state of code
     that follows <filename> is not saved to the .PCH file.
     See: ◄Using an Existing .PCH File to Speed Compilation►
 
     See also: ◄Using Precompiled Headers in PWB►
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