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- #
- # This is included very early from share/mk/src.sys.env.mk, after
- # /etc/src-env.conf but before /etc/make.conf, /etc/src.conf, or OBJDIR
- # handling.
- # - It is not safe to use .OBJDIR/OBJTOP/OBJROOT here.
- # - __ENV_ONLY_OPTIONS have been parsed by now except for opporutunistic
- # MK_AUTO_OBJ.
- #
- .if ${MK_DIRDEPS_BUILD} == "no"
- # For AUTO_OBJ many targets do not need object directories created at top-level
- # for each visited directory. Only when things are being built are they
- # needed. Having AUTO_OBJ disabled in a build target is fine as it should
- # fallback to running 'make obj' as needed. If a target is not in this list
- # then it is ran with MK_AUTO_OBJ=no in environment.
- # 'showconfig' is in the list to avoid forcing MK_AUTO_OBJ=no for it.
- AUTO_OBJ_TGT_WHITELIST+= \
- _* all all-man build* depend everything *toolchain* includes \
- libraries obj objlink showconfig tags xdev xdev-build native-xtools \
- stage* create-packages* real-packages sign-packages package-pkg \
- tinderbox universe* kernel kernels world worlds bmake
- # Only allow AUTO_OBJ for the whitelisted targets. See AUTO_OBJ_TGT_WHITELIST
- # above. MK_AUTO_OBJ not checked here for "yes" as it may not yet be enabled
- # since it is opportunistic.
- .if empty(.MAKEOVERRIDES:MMK_AUTO_OBJ)
- .for _tgt in ${AUTO_OBJ_TGT_WHITELIST}
- .if make(${_tgt})
- _CAN_USE_AUTO_OBJ?= yes
- .endif
- .endfor
- .if !defined(_CAN_USE_AUTO_OBJ)
- _MAKEARGS+= MK_AUTO_OBJ=no
- MK_AUTO_OBJ= no
- # This will prevent src.sys.obj.mk from opportunistically enabling AUTO_OBJ
- # in this make execution and for sub-makes. For all of these targets we
- # just want to read any existing OBJDIR but we don't care if we can create
- # or write to them.
- .MAKEOVERRIDES+= MK_AUTO_OBJ
- .else
- # For top-level we always assume the MAKEOBJDIRPREFIX is writable rather than
- # falling back to .CURDIR.
- __objdir_writable= yes
- .endif
- .endif # empty(.MAKEOVERRIDES:MMK_AUTO_OBJ)
- .endif # ${MK_DIRDEPS_BUILD} == "no"
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