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Diffstat (limited to 'usr.bin/make/make.1')
| -rw-r--r-- | usr.bin/make/make.1 | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/usr.bin/make/make.1 b/usr.bin/make/make.1 index e77ec19..393e4f5 100644 --- a/usr.bin/make/make.1 +++ b/usr.bin/make/make.1 @@ -1465,6 +1465,51 @@ Several flags can be specified on a single .Ic .WARN target by seperating them with blanks. .El +.Sh REMAKING MAKEFILES +After reading Makefile and all the files that are included using +.Ic .include +or +.Ic .sinclude +directives (source Makefiles) +.Nm +considers each source Makefile as a target and tries to rebuild it. +Both explicit and implicit rules are checked and all source Makefiles +are updated if necessary. If any of the source Makefiles were rebuilt, +.Nm +restarts from clean state. +.Pp +To prevent infinite loops the following source Makefile targets are ignored: +.Bl -bullet +.It +.Ic :: +targets that have no prerequisites but have commands +.It +.Ic ! +targets +.It +targets that have +.Ic .PHONY +or +.Ic .EXEC +attributes +.It +targets without prerequisites and without commands +.El +.Pp +When remaking a source Makefile options +.Ic -t +(touch target), +.Ic -q +(query mode), and +.Ic -n +(no exec) do not take effect, unless source Makefile is specified +explicitly as a target in +.Nm +command line. +.Pp +Additionally, system makefiles and +.Ic .depend +are not considered as a Makefiles that can be rebuilt. .Sh ENVIRONMENT The .Nm |
