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# $FreeBSD$
#
# Early setup of MAKEOBJDIR
#
# Default format is: /usr/obj/usr/src/[${TARGET}.${TARGET_ARCH}/]bin/sh
# MAKEOBJDIRPREFIX is /usr/obj
# OBJROOT is /usr/obj/usr/src/
# OBJTOP is /usr/obj/usr/src/[${TARGET}.${TARGET_ARCH}/]
# MAKEOBJDIR is /usr/obj/usr/src/[${TARGET}.${TARGET_ARCH}/]bin/sh
#
# MAKEOBJDIRPREFIX will override the default pattern above and internally
# set MAKEOBJDIR. If OBJROOT is set then MAKEOBJDIRPREFIX is rooted inside
# of there.
#
# If MK_UNIFIED_OBJDIR is no then OBJROOT will always match OBJTOP.
#
# If .MAKE.LEVEL == 0 then the TARGET.TARGET_ARCH is potentially added on.
# If .MAKE.LEVEL > 0 and MAKEOBJDIRPREFIX is set then it will not get
# TARGET.TARGET_ARCH added in as it assumes that MAKEOBJDIRPREFIX is
# nested in the existing OBJTOP with TARGET.TARGET_ARCH in it.
#
# The expected OBJDIR is stored in __objdir for auto.obj.mk to use.
#
# AUTO_OBJ is opportunistically enabled if the computed .OBJDIR is writable
# by the current user. Some top-level targets disable this behavior in
# Makefile.sys.inc.
#
_default_makeobjdirprefix?= /usr/obj
_default_makeobjdir= $${.CURDIR:S,^$${SRCTOP},$${OBJTOP},}
.include <bsd.mkopt.mk>
.if ${.MAKE.LEVEL} == 0 || empty(OBJROOT)
.if ${MK_UNIFIED_OBJDIR} == "no" && ${MK_DIRDEPS_BUILD} == "no"
# Fall back to historical behavior.
# We always want to set a default MAKEOBJDIRPREFIX...
MAKEOBJDIRPREFIX?= ${_default_makeobjdirprefix}
# but don't enforce TARGET.TARGET_ARCH unless we're at the top-level directory.
.if ${.CURDIR} == ${SRCTOP} && \
!(defined(TARGET) && defined(TARGET_ARCH) && \
${MACHINE} == ${TARGET} && ${MACHINE_ARCH} == ${TARGET_ARCH} && \
!defined(CROSS_BUILD_TESTING))
MAKEOBJDIRPREFIX:= ${MAKEOBJDIRPREFIX}${TARGET:D/${TARGET}.${TARGET_ARCH}}
.endif
.endif # ${MK_UNIFIED_OBJDIR} == "no"
.if !empty(MAKEOBJDIRPREFIX)
# put things approximately where they want
OBJROOT:= ${MAKEOBJDIRPREFIX}${SRCTOP}/
MAKEOBJDIRPREFIX=
# export but do not track
.export-env MAKEOBJDIRPREFIX
.endif
.if empty(MAKEOBJDIR)
# OBJTOP set below
MAKEOBJDIR= ${_default_makeobjdir}
# export but do not track
.export-env MAKEOBJDIR
# Expand for our own use
MAKEOBJDIR:= ${MAKEOBJDIR}
.endif
# SB documented at http://www.crufty.net/sjg/docs/sb-tools.htm
.if !empty(SB)
SB_OBJROOT?= ${SB}/obj/
# this is what we use below
OBJROOT?= ${SB_OBJROOT}
.endif
OBJROOT?= ${_default_makeobjdirprefix}${SRCTOP}/
.if ${OBJROOT:M*/} != ""
OBJROOT:= ${OBJROOT:H:tA}/
.else
OBJROOT:= ${OBJROOT:H:tA}/${OBJROOT:T}
.endif
# Must export since OBJDIR will dynamically be based on it
.export OBJROOT SRCTOP
.endif
.if ${MK_DIRDEPS_BUILD} == "no"
.if empty(OBJTOP)
# SRCTOP == OBJROOT only happens with clever MAKEOBJDIRPREFIX=/. Don't
# append TARGET.TARGET_ARCH for that case since the user wants to build
# in the source tree.
.if ${MK_UNIFIED_OBJDIR} == "yes" && ${SRCTOP} != ${OBJROOT:tA}
.if defined(TARGET) && defined(TARGET_ARCH)
OBJTOP:= ${OBJROOT}${TARGET}.${TARGET_ARCH}
.elif defined(TARGET) && ${.CURDIR} == ${SRCTOP}
# Not enough information, just use basic OBJDIR. This can happen with some
# 'make universe' targets or if TARGET is not being used as expected.
OBJTOP:= ${OBJROOT:H}
.else
OBJTOP:= ${OBJROOT}${MACHINE}.${MACHINE_ARCH}
.endif
.else
# TARGET.TARGET_ARCH handled in OBJROOT already.
OBJTOP:= ${OBJROOT:H}
.endif # ${MK_UNIFIED_OBJDIR} == "yes"
.endif # empty(OBJTOP)
# Fixup OBJROOT/OBJTOP if using MAKEOBJDIRPREFIX.
# This intenionally comes after adding TARGET.TARGET_ARCH so that is truncated
# away for nested objdirs. This logic also will not trigger if the OBJROOT
# block above unsets MAKEOBJDIRPREFIX.
.if !empty(MAKEOBJDIRPREFIX)
OBJTOP:= ${MAKEOBJDIRPREFIX}${SRCTOP}
OBJROOT:= ${OBJTOP}/
.endif
# Wait to validate MAKEOBJDIR until OBJTOP is set.
.if defined(MAKEOBJDIR)
.if ${MAKEOBJDIR:M/*} == ""
.error Cannot use MAKEOBJDIR=${MAKEOBJDIR}${.newline}Unset MAKEOBJDIR to get default: MAKEOBJDIR='${_default_makeobjdir}'
.endif
.endif
# __objdir is the expected .OBJDIR we want to use and that auto.obj.mk will
# try to create.
.if !empty(MAKEOBJDIRPREFIX)
.if ${.CURDIR:M${MAKEOBJDIRPREFIX}/*} != ""
# we are already in obj tree!
__objdir= ${.CURDIR}
.else
__objdir:= ${MAKEOBJDIRPREFIX}${.CURDIR}
.endif
.elif !empty(MAKEOBJDIR)
__objdir:= ${MAKEOBJDIR}
.endif
# Try to enable MK_AUTO_OBJ by default if we can write to the __objdir. Only
# do this if AUTO_OBJ is not disabled by the user, and this is the first make
# ran.
.if ${.MAKE.LEVEL} == 0 && \
${MK_AUTO_OBJ} == "no" && empty(.MAKEOVERRIDES:MMK_AUTO_OBJ) && \
!defined(WITHOUT_AUTO_OBJ) && !make(showconfig) && !make(print-dir) && \
!make(test-system-*) && \
!defined(NO_OBJ) && \
empty(RELDIR:Msys/*/compile/*)
# Find the last existing directory component and check if we can write to it.
# If the last component is a symlink then recurse on the new path.
CheckAutoObj= \
DirIsCreatable() { \
if [ -w "$${1}" ]; then \
[ -d "$${1}" ] || return 1; \
return 0; \
fi; \
d="$${1}"; \
IFS=/; \
set -- $${d}; \
unset dir; \
while [ $$\# -gt 0 ]; do \
d="$${1}"; \
shift; \
if [ ! -d "$${dir}$${d}/" ]; then \
if [ -L "$${dir}$${d}" ]; then \
dir="$$(readlink "$${dir}$${d}")/"; \
for d in "$${@}"; do \
dir="$${dir}$${d}/"; \
done; \
ret=0; \
DirIsCreatable "$${dir%/}" || ret=$$?; \
return $${ret}; \
elif [ -e "/$${dir}$${d}" ]; then \
return 1; \
else \
break; \
fi; \
fi; \
dir="$${dir}$${d}/"; \
done; \
[ -w "$${dir}" ] && [ -d "$${dir}" ] && return 0; \
return 1; \
}; \
CheckAutoObj() { \
if DirIsCreatable "$${1}"; then \
echo yes; \
else \
echo no; \
fi; \
}
.if !empty(__objdir)
.if ${.CURDIR} == ${__objdir} || \
(exists(${__objdir}) && ${.TARGETS:M*install*} == ${.TARGETS})
__objdir_writable?= yes
.elif empty(__objdir_writable)
__objdir_writable!= \
${CheckAutoObj}; CheckAutoObj "${__objdir}" || echo no
.endif
.endif
__objdir_writable?= no
# Export the decision to sub-makes.
MK_AUTO_OBJ:= ${__objdir_writable}
.export MK_AUTO_OBJ
.elif make(showconfig)
# Need to export for showconfig internally running make -dg1. It is enabled
# in sys.mk by default.
.export MK_AUTO_OBJ
.endif # ${MK_AUTO_OBJ} == "no" && ...
# Assign this directory as .OBJDIR if possible.
#
# The expected OBJDIR already exists, set it as .OBJDIR.
.if !empty(__objdir) && exists(${__objdir})
.OBJDIR: ${__objdir}
.else
# The OBJDIR we wanted does not yet exist, ensure we default to safe .CURDIR
# in case make started with a bogus MAKEOBJDIR, that expanded before OBJTOP
# was set, that happened to match some unexpected directory. Either
# auto.obj.mk or bsd.obj.mk will create the directory and fix .OBJDIR later.
.OBJDIR: ${.CURDIR}
.endif
# Ensure .OBJDIR=.CURDIR cases have a proper OBJTOP and .OBJDIR
.if defined(NO_OBJ) || ${__objdir_writable:Uunknown} == "no" || \
${__objdir} == ${.CURDIR}
OBJTOP= ${SRCTOP}
OBJROOT= ${SRCTOP}/
# Compare only to avoid an unneeded chdir(2), :tA purposely left out.
.if ${.OBJDIR} != ${.CURDIR}
.OBJDIR: ${.CURDIR}
.endif
.endif # defined(NO_OBJ)
.if !defined(HOST_TARGET)
# we need HOST_TARGET etc below.
.include <host-target.mk>
.export HOST_TARGET
.endif
HOST_OBJTOP?= ${OBJROOT}${HOST_TARGET}
.endif # ${MK_DIRDEPS_BUILD} == "no"
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