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Diffstat (limited to 'doc/make.1')
| -rw-r--r-- | doc/make.1 | 30 |
1 files changed, 29 insertions, 1 deletions
@@ -364,8 +364,36 @@ command on the given file before running except that the modification time is changed only in the imagination of .BR make . .TP 0.5i +\fB\-\-warn\fR[=\fIARG[\fR,\fIARG\fR]] +Control warning reporting for makefiles. This option can appear multiple times. +In case of conflicts, later settings override earlier settings. +.I ARG +can be an action; one of +.IR ignore , +.IR warn , +or +.I error +to set the default action for all warnings, or it can be a specific warning: +.I undefined-var +(referencing an undefined variable). The behavior of each warning can be set +by adding +.BI : action +after the warning name. If an action is not specified the default is +.IR warn . +If no +.I ARG +is provided the action for all warnings is +.IR warn . +If no +.B \-\-warn +option is provided the default action for +.I undefined-var +is +.IR ignore . +.TP 0.5i .B \-\-warn\-undefined\-variables -Warn when an undefined variable is referenced. +A deprecated alternative for +.BR \-\-warn=undefined-var . .SH "EXIT STATUS" GNU Make exits with a status of zero if all makefiles were successfully parsed and no targets that were built failed. A status of one will be returned |