xref: /freebsd/Makefile.sys.inc (revision a7fa261e)
1# $FreeBSD$
2#
3# This is included very early from share/mk/src.sys.env.mk, after
4# /etc/src-env.conf but before /etc/make.conf, /etc/src.conf, or OBJDIR
5# handling.
6# - It is not safe to use .OBJDIR/OBJTOP/OBJROOT here.
7# - __ENV_ONLY_OPTIONS have been parsed by now except for opporutunistic
8#   MK_AUTO_OBJ.
9#
10
11.if ${MK_DIRDEPS_BUILD} == "no"
12# For AUTO_OBJ many targets do not need object directories created at top-level
13# for each visited directory.  Only when things are being built are they
14# needed.  Having AUTO_OBJ disabled in a build target is fine as it should
15# fallback to running 'make obj' as needed.  If a target is not in this list
16# then it is ran with MK_AUTO_OBJ=no in environment.
17# 'showconfig' is in the list to avoid forcing MK_AUTO_OBJ=no for it.
18AUTO_OBJ_TGT_WHITELIST+= \
19	_* all all-man build* depend everything *toolchain* includes \
20	libraries obj objlink showconfig tags xdev xdev-build native-xtools \
21	stage* create-packages* real-packages sign-packages package-pkg \
22	tinderbox universe* kernel kernels world worlds bmake
23
24# Only allow AUTO_OBJ for the whitelisted targets.  See AUTO_OBJ_TGT_WHITELIST
25# above.  MK_AUTO_OBJ not checked here for "yes" as it may not yet be enabled
26# since it is opportunistic.
27.if empty(.MAKEOVERRIDES:MMK_AUTO_OBJ)
28.for _tgt in ${AUTO_OBJ_TGT_WHITELIST}
29.if make(${_tgt})
30_CAN_USE_AUTO_OBJ?= yes
31.endif
32.endfor
33.if !defined(_CAN_USE_AUTO_OBJ)
34_MAKEARGS+=		MK_AUTO_OBJ=no
35MK_AUTO_OBJ=		no
36.endif
37.endif	# empty(.MAKEOVERRIDES:MMK_AUTO_OBJ)
38
39.endif	# ${MK_DIRDEPS_BUILD} == "no"
40