freebsd-dev/share/mk/bsd.init.mk

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# $FreeBSD$
# The include file <bsd.init.mk> includes <bsd.opts.mk>,
# ../Makefile.inc and <bsd.own.mk>; this is used at the
# top of all <bsd.*.mk> files that actually "build something".
# bsd.opts.mk is included early so Makefile.inc can use the
# MK_FOO variables.
.if !target(__<bsd.init.mk>__)
__<bsd.init.mk>__:
.include <bsd.opts.mk>
.-include "local.init.mk"
.if exists(${.CURDIR}/../Makefile.inc)
.include "${.CURDIR}/../Makefile.inc"
.endif
.include <bsd.own.mk>
.MAIN: all
# Some targets need to know when something may build. This is used to
# optimize targets that are only needed when building something, such as
# (not) reading in depend files. For DIRDEPS_BUILD, it will only calculate
# the dependency graph at .MAKE.LEVEL==0, so nothing should be built there.
# Skip "build" logic if:
# - DIRDEPS_BUILD at MAKELEVEL 0
# - make -V is used without an override
# - make install is used without other targets. This is to avoid breaking
# things like 'make all install' or 'make foo install'.
# - non-build targets are called
.if ${MK_DIRDEPS_BUILD} == "yes" && ${.MAKE.LEVEL:U1} == 0 && \
${BUILD_AT_LEVEL0:Uyes:tl} == "no" && !make(clean*)
_SKIP_BUILD= not building at level 0
.elseif !empty(.MAKEFLAGS:M-V${_V_DO_BUILD}) || \
${.TARGETS:M*install*} == ${.TARGETS} || \
make(clean*) || make(obj) || make(analyze) || make(print-dir) || \
make(destroy*)
# Skip building, but don't show a warning.
_SKIP_BUILD=
.endif
.if ${MK_DIRDEPS_BUILD} == "yes" && ${.MAKE.LEVEL} > 0 && !empty(_SKIP_BUILD)
.warning ${_SKIP_BUILD}
.endif
beforebuild: .PHONY .NOTMAIN
.if !defined(_SKIP_BUILD)
all: beforebuild .WAIT
.endif
.if ${MK_META_MODE} == "yes"
.if !exists(/dev/filemon) && \
${UPDATE_DEPENDFILE:Uyes:tl} != "no" && !defined(NO_FILEMON) && \
!make(showconfig) && !make(print-dir) && ${.MAKEFLAGS:M-V} == ""
.warning The filemon module (/dev/filemon) is not loaded.
.warning META_MODE is less useful for incremental builds without filemon.
.warning 'kldload filemon' or pass -DNO_FILEMON to suppress this warning.
.endif
.endif # ${MK_META_MODE} == "yes"
.endif # !target(__<bsd.init.mk>__)