3 # Early setup of MAKEOBJDIR
5 # Default format is: /usr/obj/usr/src/[${TARGET}.${TARGET_ARCH}/]bin/sh
6 # MAKEOBJDIRPREFIX is /usr/obj
7 # OBJROOT is /usr/obj/usr/src/
8 # OBJTOP is /usr/obj/usr/src/[${TARGET}.${TARGET_ARCH}/]
9 # MAKEOBJDIR is /usr/obj/usr/src/[${TARGET}.${TARGET_ARCH}/]bin/sh
11 # MAKEOBJDIRPREFIX will override the default pattern above and internally
12 # set MAKEOBJDIR. If OBJROOT is set then MAKEOBJDIRPREFIX is rooted inside
15 # If MK_UNIFIED_OBJDIR is no then OBJROOT will always match OBJTOP.
17 # If .MAKE.LEVEL == 0 then the TARGET.TARGET_ARCH is potentially added on.
18 # If .MAKE.LEVEL > 0 and MAKEOBJDIRPREFIX is set then it will not get
19 # TARGET.TARGET_ARCH added in as it assumes that MAKEOBJDIRPREFIX is
20 # nested in the existing OBJTOP with TARGET.TARGET_ARCH in it.
23 _default_makeobjdirprefix?= /usr/obj
24 _default_makeobjdir= $${.CURDIR:S,^$${SRCTOP},$${OBJTOP},}
26 .include <bsd.mkopt.mk>
28 .if ${.MAKE.LEVEL} == 0 || empty(OBJROOT)
29 .if ${MK_UNIFIED_OBJDIR} == "no"
30 # Fall back to historical behavior.
31 # We always want to set a default MAKEOBJDIRPREFIX...
32 MAKEOBJDIRPREFIX?= ${_default_makeobjdirprefix}
33 # but don't enforce TARGET.TARGET_ARCH unless we're at the top-level directory.
34 .if ${.CURDIR} == ${SRCTOP} && \
35 !(defined(TARGET) && defined(TARGET_ARCH) && \
36 ${MACHINE} == ${TARGET} && ${MACHINE_ARCH} == ${TARGET_ARCH} && \
37 !defined(CROSS_BUILD_TESTING))
38 MAKEOBJDIRPREFIX:= ${MAKEOBJDIRPREFIX}${TARGET:D/${TARGET}.${TARGET_ARCH}}
40 .endif # ${MK_UNIFIED_OBJDIR} == "no"
42 .if !empty(MAKEOBJDIRPREFIX)
43 # put things approximately where they want
44 OBJROOT:= ${MAKEOBJDIRPREFIX}${SRCTOP}/
46 # export but do not track
47 .export-env MAKEOBJDIRPREFIX
51 MAKEOBJDIR= ${_default_makeobjdir}
52 # export but do not track
53 .export-env MAKEOBJDIR
54 # Expand for our own use
55 MAKEOBJDIR:= ${MAKEOBJDIR}
57 # SB documented at http://www.crufty.net/sjg/docs/sb-tools.htm
59 SB_OBJROOT?= ${SB}/obj/
60 # this is what we use below
61 OBJROOT?= ${SB_OBJROOT}
63 OBJROOT?= ${_default_makeobjdirprefix}${SRCTOP}/
64 .if ${OBJROOT:M*/} != ""
65 OBJROOT:= ${OBJROOT:H:tA}/
67 OBJROOT:= ${OBJROOT:H:tA}/${OBJROOT:T}
69 # Must export since OBJDIR will dynamically be based on it
70 .export OBJROOT SRCTOP
74 # SRCTOP == OBJROOT only happens with clever MAKEOBJDIRPREFIX=/. Don't
75 # append TARGET.TARGET_ARCH for that case since the user wants to build
77 .if ${MK_UNIFIED_OBJDIR} == "yes" && ${SRCTOP} != ${OBJROOT:tA}
78 OBJTOP:= ${OBJROOT}${TARGET:D${TARGET}.${TARGET_ARCH}:U${MACHINE}.${MACHINE_ARCH}}
80 # TARGET.TARGET_ARCH handled in OBJROOT already.
82 .endif # ${MK_UNIFIED_OBJDIR} == "yes"
85 # Fixup OBJROOT/OBJTOP if using MAKEOBJDIRPREFIX but leave it alone
86 # for DIRDEPS_BUILD which really wants to know the absolute top at
87 # all times. This intenionally comes after adding TARGET.TARGET_ARCH
88 # so that is truncated away for nested objdirs. This logic also
89 # will not trigger if the OBJROOT block above unsets MAKEOBJDIRPREFIX.
90 .if !empty(MAKEOBJDIRPREFIX) && ${MK_DIRDEPS_BUILD} == "no"
91 OBJTOP:= ${MAKEOBJDIRPREFIX}${SRCTOP}
95 # Wait to validate MAKEOBJDIR until OBJTOP is set.
96 .if defined(MAKEOBJDIR)
97 .if ${MAKEOBJDIR:M/*} == ""
98 .error Cannot use MAKEOBJDIR=${MAKEOBJDIR}${.newline}Unset MAKEOBJDIR to get default: MAKEOBJDIR='${_default_makeobjdir}'
102 # __objdir is the expected .OBJDIR we want to use and that auto.obj.mk will
104 .if !empty(MAKEOBJDIRPREFIX)
105 .if ${.CURDIR:M${MAKEOBJDIRPREFIX}/*} != ""
106 # we are already in obj tree!
109 __objdir:= ${MAKEOBJDIRPREFIX}${.CURDIR}
111 .elif !empty(MAKEOBJDIR)
112 __objdir:= ${MAKEOBJDIR}
115 # Try to enable MK_AUTO_OBJ by default if we can write to the __objdir. Only
116 # do this if AUTO_OBJ is not disabled by the user, and this is the first make
118 .if ${.MAKE.LEVEL} == 0 && \
119 ${MK_AUTO_OBJ} == "no" && empty(.MAKEOVERRIDES:MMK_AUTO_OBJ) && \
120 !defined(WITHOUT_AUTO_OBJ) && !make(showconfig) && !make(print-dir) && \
122 # Find the last existing directory component and check if we can write to it.
123 # If the last component is a symlink then recurse on the new path.
126 [ -w "$${1}" ] && return 0; \
131 while [ $$\# -gt 0 ]; do \
134 if [ ! -d "$${dir}$${d}/" ]; then \
135 if [ -L "$${dir}$${d}" ]; then \
136 dir="$$(readlink "$${dir}$${d}")/"; \
137 for d in "$${@}"; do \
138 dir="$${dir}$${d}/"; \
141 DirIsCreatable "$${dir%/}" || ret=$$?; \
147 dir="$${dir}$${d}/"; \
152 if DirIsCreatable "$${1}"; then \
159 .if ${.CURDIR} == ${__objdir}
160 __objdir_writable?= yes
162 __objdir_writable!= \
163 ${CheckAutoObj}; CheckAutoObj "${__objdir}" || echo no
166 __objdir_writable?= no
167 # Export the decision to sub-makes.
168 MK_AUTO_OBJ:= ${__objdir_writable}
170 .elif make(showconfig)
171 # Need to export for showconfig internally running make -dg1. It is enabled
172 # in sys.mk by default.
174 .endif # ${MK_AUTO_OBJ} == "no" && ...
176 # Assign this directory as .OBJDIR if possible.
178 # The expected OBJDIR already exists, set it as .OBJDIR.
179 .if !empty(__objdir) && exists(${__objdir})
181 # Special case to work around bmake bug. If the top-level .OBJDIR does not yet
182 # exist and MAKEOBJDIR is passed into environment and yield a blank value,
183 # bmake will incorrectly set .OBJDIR=${SRCTOP}/ rather than the expected
184 # ${SRCTOP} to match ${.CURDIR}.
185 .elif ${MAKE_VERSION} <= 20170720 && \
186 ${.CURDIR} == ${SRCTOP} && ${.OBJDIR} == ${SRCTOP}/
189 # The OBJDIR we wanted does not yet exist, ensure we default to safe .CURDIR
190 # in case make started with a bogus MAKEOBJDIR, that expanded before OBJTOP
191 # was set, that happened to match some unexpected directory. Either
192 # auto.obj.mk or bsd.obj.mk will create the directory and fix .OBJDIR later.
196 # Ensure .OBJDIR=.CURDIR cases have a proper OBJTOP and .OBJDIR
197 .if defined(NO_OBJ) || ${__objdir_writable:Uunknown} == "no" || \
198 ${__objdir} == ${.CURDIR}
201 # Compare only to avoid an unneeded chdir(2), :tA purposely left out.
202 .if ${.OBJDIR} != ${.CURDIR}
205 .endif # defined(NO_OBJ)