diff options
Diffstat (limited to 'mk/dirdeps-options.mk')
| -rw-r--r-- | mk/dirdeps-options.mk | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/mk/dirdeps-options.mk b/mk/dirdeps-options.mk index b31d2033ae98..9a97615bbeb8 100644 --- a/mk/dirdeps-options.mk +++ b/mk/dirdeps-options.mk @@ -1,4 +1,4 @@ -# $Id: dirdeps-options.mk,v 1.20 2022/03/17 20:11:36 sjg Exp $ +# $Id: dirdeps-options.mk,v 1.21 2022/09/06 22:18:45 sjg Exp $ # # @(#) Copyright (c) 2018-2022, Simon J. Gerraty # @@ -42,6 +42,13 @@ # so we qualify MK_FOO with .${TARGET_SPEC} and each component # TARGET_SPEC_VAR (in reverse order) before using MK_FOO. # +# Because Makefile.depend.options are processed at both level 0 (when +# computing DIRDEPS to build) and higher (when updating +# Makefile.depend* after successful build), it is important that +# all references to TARGET_SPEC_VARs should use the syntax +# ${DEP_${TARGET_SPEC_VAR}:U${TARGET_SPEC_VAR}} to ensure correct +# behavior. +# # This should have been set by Makefile.depend.options # before including us |