CVS commit: src/usr.bin/make

["Simon J. Gerraty" <sjg%netbsd.org@localhost>]

Module Name:    src
Committed By:   sjg
Date:           Tue Sep  8 17:29:20 UTC 2009

Modified Files:
        src/usr.bin/make: main.c make.1 make.h var.c

Log Message:
Reviewed by: apb

Use .MAKE.LEVEL to track recursion.
The first instance of make will have .MAKE.LEVEL 0, which
can be handy for excluding rules which should not apply
in a sub-make.
gmake and freebsd's make have a similar mechanism, but each
uses a different variable to track it.  Since we cannot be
compatible with both, we allow the makefiles to cope if they want
by handling the export of .MAKE.LEVEL+1 in Var_Set().


To generate a diff of this commit:
cvs rdiff -u -r1.172 -r1.173 src/usr.bin/make/main.c
cvs rdiff -u -r1.160 -r1.161 src/usr.bin/make/make.1
cvs rdiff -u -r1.78 -r1.79 src/usr.bin/make/make.h
cvs rdiff -u -r1.153 -r1.154 src/usr.bin/make/var.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.