Where to Define Macros
The latest version of this topic can be found at Where to Define Macros.
Define macros in a command line, command file, makefile, or the Tools.ini file.
In a makefile or the Tools.ini file, each macro definition must appear on a separate line and cannot start with a space or tab. Spaces or tabs around the equal sign are ignored. All string characters are literal, including surrounding quotation marks and embedded spaces.
In a command line or command file, spaces and tabs delimit arguments and cannot surround the equal sign. If string has embedded spaces or tabs, enclose either the string itself or the entire macro in double quotation marks (" ").