U4001

command file can be invoked only from command line
Explanation: You used an @ symbol on an argument in a command file. You cannot invoke another command file from within a command file.
Action: If the you want '@' to be part of an argument in a command file, you must enclose that argument in quotation marks.

no match found for wild card 'string'
Explanation: NMAKE expanded wildcards in the given string, but found no files matching the specification.
Action: Check the existence of desired files on your file system.

too many rules for target 'targetname'
Explanation: You specified too many inference rules for the specified targetname.
Action: Revise your rules specification for targetname.

ignoring rule 'string' (extension not in .SUFFIXES)
Explanation: You specified an inference rule with a suffix which was not in the .SUFFIXES list.
Action: To use the suffix, be sure to include it in the .SUFFIXES list.

special macro undefined : 'macroname'
Explanation: You specified the undefined macro macroname.
Action: NMAKE will ignore the undefined macroname. You may use only predefined special macros.

file name 'filename' too long; truncating to 8.3
Explanation: The specified filename is too long for a FAT file system name.
Action: NMAKE will shorten the filename to at most an eight-character name and 3-character extension.

removed target 'filename'
Explanation: While deleting non-precious files, NMAKE erased the specified filename which was a target.
Action: Check your lists of targets and dependent files to be sure that filename is not needed.