freebsd-skq/share/mk/bsd.init.mk
bdrewery e10157c915 Handle some .OBJDIR == .CURDIR cases.
- If OBJROOT is SRCTOP then don't add on TARGET.TARGET_ARCH.  This
  only happens at the top-level, and for sub-directories when the
  user is clever with MAKEOBJDIRPREFIX=/.
- Don't bother checking 'test -w' on .CURDIR.
- Properly set OBJTOP/OBJROOT to SRCTOP in various needed cases.
- Check if the OBJDIR is writable even for *clean* targets since it
  determines which .OBJDIR the user gets;  If they cannot write to an
  existing eligible .OBJDIR then it needs to clean in .CURDIR instead.
- Add guard to cleanworld/cleanuniverse from removing SRCTOP.
- Ensure OBJTOP is proper for .OBJDIR=.CURDIR which fixes finding
  libraries since src.libnames.mk is based on OBJTOP.
- Avoid some chdir(2) for modifying .OBJDIR

Sponsored by:	Dell EMC Isilon
2017-11-10 02:09:33 +00:00

92 lines
2.8 KiB
Makefile

# $FreeBSD$
# 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 ${MK_AUTO_OBJ} == "yes"
# This is also done in bsd.obj.mk
.if defined(NO_OBJ) && ${.OBJDIR} != ${.CURDIR}
.OBJDIR: ${.CURDIR}
.endif
.endif
.if exists(${.CURDIR}/../Makefile.inc)
.include "${.CURDIR}/../Makefile.inc"
.endif
.include <bsd.own.mk>
.MAIN: all
# This is used in bsd.{dep,lib,prog}.mk as ${OBJS_SRCS_FILTER:ts:}
# Some makefiles may want T as well to avoid nested objdirs.
OBJS_SRCS_FILTER+= R
# Handle INSTALL_AS_USER here to maximize the chance that
# it has final authority over fooOWN and fooGRP.
.if ${MK_INSTALL_AS_USER} != "no"
.if !defined(_uid)
_uid!= id -u
.export _uid
.endif
.if ${_uid} != 0
.if !defined(_gid)
_gid!= id -g
.export _gid
.endif
.for x in BIN CONF DOC DTB INFO KMOD LIB MAN NLS SHARE
$xOWN= ${_uid}
$xGRP= ${_gid}
.endfor
.endif
.endif
# 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 && \
${BUILD_AT_LEVEL0:Uyes:tl} == "no" && !make(clean*)
_SKIP_BUILD= not building at level 0
.elif !empty(.MAKEFLAGS:M-V${_V_DO_BUILD}) || \
${.TARGETS:M*install*} == ${.TARGETS} || \
${.TARGETS:Mclean*} == ${.TARGETS} || \
${.TARGETS:Mdestroy*} == ${.TARGETS} || \
${.TARGETS:Mobj} == ${.TARGETS} || \
make(analyze) || make(print-dir)
# 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>__)