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NMAKE Options

NMAKE options are described in the following table. Options are preceded by either a slash (/) or a dash (–) and are not case sensitive. Use !CMDSWITCHES to change option settings in a makefile or in Tools.ini.

Option

Purpose

/A

Forces build of all evaluated targets, even if not out-of-date with respect to dependents. Does not force build of unrelated targets.

/B

Forces build even if timestamps are equal. Recommended only for very fast systems (resolution of two seconds or less).

/C

Suppresses default output, including nonfatal NMAKE errors or warnings, timestamps, and NMAKE copyright message. Suppresses warnings issued by /K.

/D

Displays timestamps of each evaluated target and dependent and a message when a target does not exist. Useful with /P for debugging a makefile. Use !CMDSWITCHES to set or clear /D for part of a makefile.

/E

Causes environment variables to override makefile macro definitions.

/ERRORREPORT[NONE | PROMPT | QUEUE | SEND ]

If nmake.exe fails at runtime, you can use /ERRORREPORT to send information to Microsoft about these internal errors.

For more information about /ERRORREPORT, see /errorReport (Report Internal Compiler Errors).

/F filename

Specifies filename as a makefile. Spaces or tabs can precede filename. Specify /F once for each makefile. To supply a makefile from standard input, specify a dash (–) for filename, and end keyboard input with either F6 or CTRL+Z.

/G

Displays the makefiles included with the !INCLUDE directive. See Makefile Preprocessing Directives for more information.

/HELP, /?

Displays a brief summary of NMAKE command-line syntax.

/I

Ignores exit codes from all commands. To set or clear /I for part of a makefile, use !CMDSWITCHES. To ignore exit codes for part of a makefile, use a dash (–) command modifier or .IGNORE. Overrides /K if both are specified.

/K

Continues building unrelated dependencies, if a command returns an error. Also issues a warning and returns an exit code of 1. By default, NMAKE halts if any command returns a nonzero exit code. Warnings from /K are suppressed by /C; /I overrides /K if both are specified.

/N

Displays but does not execute commands; preprocessing commands are executed. Does not display commands in recursive NMAKE calls. Useful for debugging makefiles and checking timestamps. To set or clear /N for part of a makefile, use !CMDSWITCHES.

/NOLOGO

Suppresses the NMAKE copyright message.

/P

Displays information (macro definitions, inference rules, targets, .SUFFIXES list) to standard output, and then runs the build. If no makefile or command-line target exists, it displays information only. Use with /D to debug a makefile.

/Q

Checks timestamps of targets; does not run the build. Returns a zero exit code if all targets are up-to-date and a nonzero exit code if any target is not. Preprocessing commands are executed. Useful when running NMAKE from a batch file.

/R

Clears the .SUFFIXES list and ignores inference rules and macros that are defined in the Tools.ini file or that are predefined.

/S

Suppresses display of executed commands. To suppress display in part of a makefile, use the @ command modifier or .SILENT. To set or clear /S for part of a makefile, use !CMDSWITCHES.

/T

Updates timestamps of command-line targets (or first makefile target) and executes preprocessing commands but does not run the build.

/U

Must be used in conjunction with /N. Dumps inline NMAKE files so that the /N output can be used as a batch file.

/X filename

Sends NMAKE error output to filename instead of standard error. Spaces or tabs can precede filename. To send error output to standard output, specify a dash (–) for filename. Does not affect output from commands to standard error.

/Y

Disables batch-mode inference rules. When this option is selected, all batch-mode inference rules are treated as regular inference rules.

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