1# $Id: sys.mk,v 1.52 2020/12/22 20:44:24 sjg Exp $ 2# 3# @(#) Copyright (c) 2003-2009, Simon J. Gerraty 4# 5# This file is provided in the hope that it will 6# be of use. There is absolutely NO WARRANTY. 7# Permission to copy, redistribute or otherwise 8# use this file is hereby granted provided that 9# the above copyright notice and this notice are 10# left intact. 11# 12# Please send copies of changes and bug-fixes to: 13# sjg@crufty.net 14# 15 16# Avoid putting anything platform specific in here. 17 18# _DEBUG_MAKE_FLAGS etc. 19.include <sys.debug.mk> 20 21.if !empty(_DEBUG_MAKE_FLAGS) 22.if ${_DEBUG_MAKE_SYS_DIRS:Uno:@x@${.CURDIR:M$x}@} != "" 23.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS} 24.endif 25.endif 26 27# useful modifiers 28.include <sys.vars.mk> 29 30# we expect a recent bmake 31.if !defined(_TARGETS) 32# some things we do only once 33_TARGETS := ${.TARGETS} 34.-include <sys.env.mk> 35.endif 36 37# we need HOST_TARGET etc below. 38.include <host-target.mk> 39 40# early customizations 41.-include <local.sys.env.mk> 42 43# Popular suffixes for C++ 44CXX_SUFFIXES += .cc .cpp .cxx .C 45CXX_SUFFIXES := ${CXX_SUFFIXES:O:u} 46 47# find the OS specifics 48.if defined(SYS_OS_MK) 49.include <${SYS_OS_MK}> 50.else 51_sys_mk = 52.for x in ${HOST_OSTYPE} ${HOST_TARGET} ${HOST_OS} ${MACHINE} Generic 53.if empty(_sys_mk) 54.-include <sys/$x.mk> 55_sys_mk := ${.MAKE.MAKEFILES:M*/$x.mk} 56.if !empty(_sys_mk) 57_sys_mk := sys/${_sys_mk:T} 58.endif 59.endif 60.if empty(_sys_mk) 61# might be an old style 62.-include <$x.sys.mk> 63_sys_mk := ${.MAKE.MAKEFILES:M*/$x.sys.mk:T} 64.endif 65.endfor 66 67SYS_OS_MK := ${_sys_mk} 68.export SYS_OS_MK 69.endif 70 71# some options we need to know early 72OPTIONS_DEFAULT_NO += \ 73 DIRDEPS_BUILD \ 74 DIRDEPS_CACHE 75 76OPTIONS_DEFAULT_DEPENDENT += \ 77 AUTO_OBJ/DIRDEPS_BUILD \ 78 META_MODE/DIRDEPS_BUILD \ 79 STAGING/DIRDEPS_BUILD \ 80 STATIC_DIRDEPS_CACHE/DIRDEPS_CACHE \ 81 82.-include <options.mk> 83 84.if ${MK_DIRDEPS_BUILD:Uno} == "yes" 85MK_META_MODE = yes 86.-include <meta.sys.mk> 87.elif ${MK_META_MODE:Uno} == "yes" 88.MAKE.MODE = meta verbose ${META_MODE} 89.endif 90# make sure we have a harmless value 91.MAKE.MODE ?= normal 92 93# if you want objdirs make them automatic 94# and do it early before we compute .PATH 95.if ${MK_AUTO_OBJ:Uno} == "yes" || ${MKOBJDIRS:Uno} == "auto" 96.include <auto.obj.mk> 97.endif 98 99.if !empty(SRCTOP) 100.if ${.CURDIR} == ${SRCTOP} 101RELDIR = . 102.elif ${.CURDIR:M${SRCTOP}/*} 103RELDIR := ${.CURDIR:S,${SRCTOP}/,,} 104.endif 105.endif 106 107MACHINE_ARCH.host ?= ${_HOST_ARCH} 108MACHINE_ARCH.${MACHINE} ?= ${MACHINE} 109.if empty(MACHINE_ARCH) 110MACHINE_ARCH = ${MACHINE_ARCH.${MACHINE}} 111.endif 112 113.ifndef ROOT_GROUP 114ROOT_GROUP != sed -n /:0:/s/:.*//p /etc/group 115.export ROOT_GROUP 116.endif 117 118unix ?= We run ${_HOST_OSNAME}. 119 120# We need a Bourne/POSIX shell 121MAKE_SHELL ?= ${.SHELL:Ush} 122SHELL := ${MAKE_SHELL} 123 124# A race condition in mkdir, means that it can bail if another 125# process made a dir that mkdir expected to. 126# We repeat the mkdir -p a number of times to try and work around this. 127# We stop looping as soon as the dir exists. 128# If we get to the end of the loop, a plain mkdir will issue an error. 129Mkdirs= Mkdirs() { \ 130 for d in $$*; do \ 131 for i in 1 2 3 4 5 6; do \ 132 mkdir -p $$d; \ 133 test -d $$d && return 0; \ 134 done; \ 135 mkdir $$d || exit $$?; \ 136 done; } 137 138# this often helps with debugging 139.SUFFIXES: .cpp-out 140 141.c.cpp-out: 142 @${COMPILE.c:N-c} -E ${.IMPSRC} | grep -v '^[ ]*$$' 143 144${CXX_SUFFIXES:%=%.cpp-out}: 145 @${COMPILE.cc:N-c} -E ${.IMPSRC} | grep -v '^[ ]*$$' 146 147# late customizations 148.-include <local.sys.mk> 149 150# if .CURDIR is matched by any entry in DEBUG_MAKE_DIRS we 151# will apply DEBUG_MAKE_FLAGS, now. 152.if !empty(_DEBUG_MAKE_FLAGS) 153.if ${_DEBUG_MAKE_DIRS:Uno:@x@${.CURDIR:M$x}@} != "" 154.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS} 155.endif 156.endif 157