1# $FreeBSD$ 2# 3# Early setup of MAKEOBJDIR 4# 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 10# 11# MAKEOBJDIRPREFIX will override the default pattern above and internally 12# set MAKEOBJDIR. If OBJROOT is set then MAKEOBJDIRPREFIX is rooted inside 13# of there. 14# 15# If MK_UNIFIED_OBJDIR is no then OBJROOT will always match OBJTOP. 16# 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. 21# 22# The expected OBJDIR is stored in __objdir for auto.obj.mk to use. 23# 24# AUTO_OBJ is opportunistically enabled if the computed .OBJDIR is writable 25# by the current user. Some top-level targets disable this behavior in 26# Makefile.sys.inc. 27# 28 29_default_makeobjdirprefix?= /usr/obj 30_default_makeobjdir= $${.CURDIR:S,^$${SRCTOP},$${OBJTOP},} 31 32.include <bsd.mkopt.mk> 33 34.if ${.MAKE.LEVEL} == 0 || empty(OBJROOT) 35.if ${MK_UNIFIED_OBJDIR} == "no" && ${MK_DIRDEPS_BUILD} == "no" 36# Fall back to historical behavior. 37# We always want to set a default MAKEOBJDIRPREFIX... 38MAKEOBJDIRPREFIX?= ${_default_makeobjdirprefix} 39# but don't enforce TARGET.TARGET_ARCH unless we're at the top-level directory. 40.if ${.CURDIR} == ${SRCTOP} && \ 41 !(defined(TARGET) && defined(TARGET_ARCH) && \ 42 ${MACHINE} == ${TARGET} && ${MACHINE_ARCH} == ${TARGET_ARCH} && \ 43 !defined(CROSS_BUILD_TESTING)) 44MAKEOBJDIRPREFIX:= ${MAKEOBJDIRPREFIX}${TARGET:D/${TARGET}.${TARGET_ARCH}} 45.endif 46.endif # ${MK_UNIFIED_OBJDIR} == "no" 47 48.if !empty(MAKEOBJDIRPREFIX) 49# put things approximately where they want 50OBJROOT:= ${MAKEOBJDIRPREFIX}${SRCTOP}/ 51MAKEOBJDIRPREFIX= 52# export but do not track 53.export-env MAKEOBJDIRPREFIX 54.endif 55.if empty(MAKEOBJDIR) 56# OBJTOP set below 57MAKEOBJDIR= ${_default_makeobjdir} 58# export but do not track 59.export-env MAKEOBJDIR 60# Expand for our own use 61MAKEOBJDIR:= ${MAKEOBJDIR} 62.endif 63# SB documented at http://www.crufty.net/sjg/docs/sb-tools.htm 64.if !empty(SB) 65SB_OBJROOT?= ${SB}/obj/ 66# this is what we use below 67OBJROOT?= ${SB_OBJROOT} 68.endif 69OBJROOT?= ${_default_makeobjdirprefix}${SRCTOP}/ 70.if ${OBJROOT:M*/} != "" 71OBJROOT:= ${OBJROOT:H:tA}/ 72.else 73OBJROOT:= ${OBJROOT:H:tA}/${OBJROOT:T} 74.endif 75# Must export since OBJDIR will dynamically be based on it 76.export OBJROOT SRCTOP 77.endif 78 79.if ${MK_DIRDEPS_BUILD} == "no" 80.if empty(OBJTOP) 81# SRCTOP == OBJROOT only happens with clever MAKEOBJDIRPREFIX=/. Don't 82# append TARGET.TARGET_ARCH for that case since the user wants to build 83# in the source tree. 84.if ${MK_UNIFIED_OBJDIR} == "yes" && ${SRCTOP} != ${OBJROOT:tA} 85.if defined(TARGET) && defined(TARGET_ARCH) 86OBJTOP:= ${OBJROOT}${TARGET}.${TARGET_ARCH} 87.elif defined(TARGET) && ${.CURDIR} == ${SRCTOP} 88# Not enough information, just use basic OBJDIR. This can happen with some 89# 'make universe' targets or if TARGET is not being used as expected. 90OBJTOP:= ${OBJROOT:H} 91.else 92OBJTOP:= ${OBJROOT}${MACHINE}.${MACHINE_ARCH} 93.endif 94.else 95# TARGET.TARGET_ARCH handled in OBJROOT already. 96OBJTOP:= ${OBJROOT:H} 97.endif # ${MK_UNIFIED_OBJDIR} == "yes" 98.endif # empty(OBJTOP) 99 100# Fixup OBJROOT/OBJTOP if using MAKEOBJDIRPREFIX. 101# This intenionally comes after adding TARGET.TARGET_ARCH so that is truncated 102# away for nested objdirs. This logic also will not trigger if the OBJROOT 103# block above unsets MAKEOBJDIRPREFIX. 104.if !empty(MAKEOBJDIRPREFIX) 105OBJTOP:= ${MAKEOBJDIRPREFIX}${SRCTOP} 106OBJROOT:= ${OBJTOP}/ 107.endif 108 109# Wait to validate MAKEOBJDIR until OBJTOP is set. 110.if defined(MAKEOBJDIR) 111.if ${MAKEOBJDIR:M/*} == "" 112.error Cannot use MAKEOBJDIR=${MAKEOBJDIR}${.newline}Unset MAKEOBJDIR to get default: MAKEOBJDIR='${_default_makeobjdir}' 113.endif 114.endif 115 116# __objdir is the expected .OBJDIR we want to use and that auto.obj.mk will 117# try to create. 118.if !empty(MAKEOBJDIRPREFIX) 119.if ${.CURDIR:M${MAKEOBJDIRPREFIX}/*} != "" 120# we are already in obj tree! 121__objdir= ${.CURDIR} 122.else 123__objdir:= ${MAKEOBJDIRPREFIX}${.CURDIR} 124.endif 125.elif !empty(MAKEOBJDIR) 126__objdir:= ${MAKEOBJDIR} 127.endif 128 129# Try to enable MK_AUTO_OBJ by default if we can write to the __objdir. Only 130# do this if AUTO_OBJ is not disabled by the user, and this is the first make 131# ran. 132.if ${.MAKE.LEVEL} == 0 && \ 133 ${MK_AUTO_OBJ} == "no" && empty(.MAKEOVERRIDES:MMK_AUTO_OBJ) && \ 134 !defined(WITHOUT_AUTO_OBJ) && !make(showconfig) && !make(print-dir) && \ 135 !make(test-system-*) && \ 136 !defined(NO_OBJ) && \ 137 empty(RELDIR:Msys/*/compile/*) 138# Find the last existing directory component and check if we can write to it. 139# If the last component is a symlink then recurse on the new path. 140CheckAutoObj= \ 141DirIsCreatable() { \ 142 if [ -w "$${1}" ]; then \ 143 [ -d "$${1}" ] || return 1; \ 144 return 0; \ 145 fi; \ 146 d="$${1}"; \ 147 IFS=/; \ 148 set -- $${d}; \ 149 unset dir; \ 150 while [ $$\# -gt 0 ]; do \ 151 d="$${1}"; \ 152 shift; \ 153 if [ ! -d "$${dir}$${d}/" ]; then \ 154 if [ -L "$${dir}$${d}" ]; then \ 155 dir="$$(readlink "$${dir}$${d}")/"; \ 156 for d in "$${@}"; do \ 157 dir="$${dir}$${d}/"; \ 158 done; \ 159 ret=0; \ 160 DirIsCreatable "$${dir%/}" || ret=$$?; \ 161 return $${ret}; \ 162 elif [ -e "/$${dir}$${d}" ]; then \ 163 return 1; \ 164 else \ 165 break; \ 166 fi; \ 167 fi; \ 168 dir="$${dir}$${d}/"; \ 169 done; \ 170 [ -w "$${dir}" ] && [ -d "$${dir}" ] && return 0; \ 171 return 1; \ 172}; \ 173CheckAutoObj() { \ 174 if DirIsCreatable "$${1}"; then \ 175 echo yes; \ 176 else \ 177 echo no; \ 178 fi; \ 179} 180.if !empty(__objdir) 181.if ${.CURDIR} == ${__objdir} || \ 182 (exists(${__objdir}) && ${.TARGETS:M*install*} == ${.TARGETS}) 183__objdir_writable?= yes 184.elif empty(__objdir_writable) 185__objdir_writable!= \ 186 ${CheckAutoObj}; CheckAutoObj "${__objdir}" || echo no 187.endif 188.endif 189__objdir_writable?= no 190# Export the decision to sub-makes. 191MK_AUTO_OBJ:= ${__objdir_writable} 192.export MK_AUTO_OBJ 193.elif make(showconfig) 194# Need to export for showconfig internally running make -dg1. It is enabled 195# in sys.mk by default. 196.export MK_AUTO_OBJ 197.endif # ${MK_AUTO_OBJ} == "no" && ... 198 199# Assign this directory as .OBJDIR if possible. 200# 201# The expected OBJDIR already exists, set it as .OBJDIR. 202.if !empty(__objdir) && exists(${__objdir}) 203.OBJDIR: ${__objdir} 204.else 205# The OBJDIR we wanted does not yet exist, ensure we default to safe .CURDIR 206# in case make started with a bogus MAKEOBJDIR, that expanded before OBJTOP 207# was set, that happened to match some unexpected directory. Either 208# auto.obj.mk or bsd.obj.mk will create the directory and fix .OBJDIR later. 209.OBJDIR: ${.CURDIR} 210.endif 211 212# Ensure .OBJDIR=.CURDIR cases have a proper OBJTOP and .OBJDIR 213.if defined(NO_OBJ) || ${__objdir_writable:Uunknown} == "no" || \ 214 ${__objdir} == ${.CURDIR} 215OBJTOP= ${SRCTOP} 216OBJROOT= ${SRCTOP}/ 217# Compare only to avoid an unneeded chdir(2), :tA purposely left out. 218.if ${.OBJDIR} != ${.CURDIR} 219.OBJDIR: ${.CURDIR} 220.endif 221.endif # defined(NO_OBJ) 222 223HOST_OBJTOP?= ${OBJROOT}${HOST_TARGET} 224 225.endif # ${MK_DIRDEPS_BUILD} == "no" 226