B.2.124.8 Warnings

• Do not specify conflicting -xpch flags on the command line. For example, specifying both -xpch=collect and -xpch=auto, or specifying both -xpch=autofirst with -xpchstop=<include> generates an error.

• If you specify -xpch=autofirst or you specify -xpch=auto without -xpchstop, any declaration, definition, or #line directive that appears prior to the first include file, or appears prior to the include file that is specified with -xpchstop for -xpch=auto, generates a warning and disables the automatic generation of the precompiled-header file.

• A #pragma hdrstop before the first include file under -xpch=autofirst or -xpch=auto disables the automatic generation of the precompiled-header file.