Developer Guide and Reference

Contents

pch-use

Tells the compiler to use a precompiled header file.

Syntax

Linux and macOS:
-pch-use
filename
Windows:
None
Arguments
filename
Is the name of the precompiled header file to use. A space must appear before the file name. It can include a path.
Default
OFF
The compiler does not create or use precompiled headers unless you tell it to do so.
Description
This option tells the compiler to use a precompiled header (PCH) file.
It is supported for multiple source files when all source files use the same .pchi file.
This option cannot be used in the same compilation as the
-pch-create
option.
To learn how to optimize compile times using the PCH options, see "Using Precompiled Header Files" in the User's Guide.
On Windows* systems, option
-pch-use
is equivalent to the
/Yu
option.
Alternate Options
Linux and
macOS*
: None
Windows:
/Yu
Consider the following command line:
icpc -pch-use /pch/source32.pchi source.cpp
It produces the following output:
"source.cpp": using precompiled header file /pch/source32.pchi