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authorsjg <sjg@NetBSD.org>2009-09-08 17:29:20 +0000
committersjg <sjg@NetBSD.org>2009-09-08 17:29:20 +0000
commit44c6580dd0748f0bb73f362d9f16798a63e4dd19 (patch)
tree9cf1c41be4716076e9a8b6573a7cc75c5d174f5c /sys/dev/dm/dm_dev.c
parent2b11b477b32e2f3f3fee2cf590d21e40b4ae304e (diff)
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().
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