ALP translates the value of the BaseEXE internal variable to uppercase and uses this value to construct the name of an ALP-specific environment variable having the form:
<BaseEXE>_OPTIONS
For example, if the value of BaseEXE is alp, then ALP constructs an environment variable called ALP_OPTIONS and tries to locate it in the environment. If found, its contents are logically prepended to the assembler command line.
You can use this variable to set alternate default values for assembler command line options. For maximum flexibility, it is recommended that this variable contain a reference to a command line response file using an @Filename directive, which allows the default command line options to be stored in a file rather than in the environment variable itself.