Dot directives
Specify dot directives outside a description block, at the start of a line. Dot directives begin with a period ( .
) and are followed by a colon (:
). Spaces and tabs are allowed. Dot directive names are case-sensitive and must be uppercase.
Directive | Purpose |
---|---|
.IGNORE : |
Ignores nonzero exit codes returned by commands, from the place it is specified to the end of the makefile. By default, NMAKE halts if a command returns a nonzero exit code. To restore error checking, use !CMDSWITCHES . To ignore the exit code for a single command, use the dash (- ) modifier. To ignore exit codes for an entire file, use /I . |
.PRECIOUS : targets |
Preserves targets on disk if the commands to update them are halted; has no effect if a command handles an interrupt by deleting the file. Separate the target names with one or more spaces or tabs. By default, NMAKE deletes a target if a build is interrupted by CTRL+C or CTRL+BREAK. Each use of .PRECIOUS applies to the entire makefile; multiple specifications are cumulative. |
.SILENT |
Suppresses display of executed commands, from the place it is specified to the end of the makefile. By default, NMAKE displays the commands it invokes. To restore echoing, use !CMDSWITCHES . To suppress echoing of a single command, use the @ modifier. To suppress echoing for an entire file, use /S . |
.SUFFIXES : list |
Lists extensions for inference-rule matching; predefined to include the following extensions: .exe .obj .asm .c .cpp .cxx .bas .cbl .for .pas .res .rc .f .f90 |
To change the .SUFFIXES
list order or to specify a new list, clear the list and specify a new setting. To clear the list, specify no extensions after the colon:
.SUFFIXES :
To add additional suffixes to the end of the list, specify
.SUFFIXES : suffix_list
where suffix_list is a list of the additional suffixes, separated by one or more spaces or tabs. To see the current setting of .SUFFIXES
, run NMAKE with /P
.
See also
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