1# SPDX-License-Identifier: BSD-2-Clause 2# 3# $Id: sys.vars.mk,v 1.16 2024/02/17 17:26:57 sjg Exp $ 4# 5# @(#) Copyright (c) 2003-2023, Simon J. Gerraty 6# 7# This file is provided in the hope that it will 8# be of use. There is absolutely NO WARRANTY. 9# Permission to copy, redistribute or otherwise 10# use this file is hereby granted provided that 11# the above copyright notice and this notice are 12# left intact. 13# 14# Please send copies of changes and bug-fixes to: 15# sjg@crufty.net 16# 17 18# We use the following paradigm for preventing multiple inclusion. 19# It relies on the fact that conditionals and dependencies are resolved 20# at the time they are read. 21# 22# _this ?= ${.PARSEDIR:tA}/${.PARSEFILE} 23# .if !target(__${_this}__) 24# __${_this}__: .NOTMAIN 25# 26 27# if this is an ancient version of bmake 28MAKE_VERSION ?= 0 29.if ${MAKE_VERSION:M*make-*} 30# turn it into what we want - just the date 31MAKE_VERSION := ${MAKE_VERSION:[1]:C,.*-,,} 32.endif 33 34.if ${MAKE_VERSION} < 20100414 35_this = ${.PARSEDIR}/${.PARSEFILE} 36.else 37_this = ${.PARSEDIR:tA}/${.PARSEFILE} 38.endif 39 40# some useful modifiers 41 42# A useful trick for testing multiple :M's against something 43# :L says to use the variable's name as its value - ie. literal 44# got = ${clean* destroy:${M_ListToMatch:S,V,.TARGETS,}} 45M_ListToMatch = L:@m@$${V:U:M$$m}@ 46# match against our initial targets (see above) 47M_L_TARGETS = ${M_ListToMatch:S,V,_TARGETS,} 48 49# turn a list into a set of :N modifiers 50# NskipFoo = ${Foo:${M_ListToSkip}} 51M_ListToSkip= O:u:S,^,N,:ts: 52 53# type should be a builtin in any sh since about 1980, 54# but sadly there are exceptions! 55.if ${.MAKE.OS:Unknown:NBSD/OS} == "" 56_type_sh = which 57.endif 58 59# AUTOCONF := ${autoconf:L:${M_whence}} 60M_type = @x@(${_type_sh:Utype} $$x) 2> /dev/null; echo;@:sh:[0]:N* found*:[@]:C,[()],,g 61M_whence = ${M_type}:M/*:[1] 62 63# produce similar output to jot(1) or seq(1) 64# eg. ${LIST:[#]:${M_JOT}} 65# would be 1 2 3 4 5 if LIST has 5 words 66# ${9:L:${M_JOT}} 67# would be 1 2 3 4 5 6 7 8 9 68.if ${.MAKE.LEVEL} == 0 69.for x in jot seq 70.if empty(JOT_CMD) 71JOT_CMD := ${$x:L:${M_whence}} 72.endif 73.endfor 74.if !empty(JOT_CMD) 75.export JOT_CMD 76.endif 77.endif 78.if !empty(JOT_CMD) 79M_JOT = [1]:S,^,${JOT_CMD} ,:sh 80.else 81M_JOT = [1]:@x@i=1;while [ $$$$i -le $$x ]; do echo $$$$i; i=$$$$((i + 1)); done;@:sh 82.endif 83 84# ${LIST:${M_RANGE}} is 1 2 3 4 5 if LIST has 5 words 85.if ${MAKE_VERSION} < 20170130 86M_RANGE = [#]:${M_JOT} 87.else 88M_RANGE = range 89.endif 90 91# convert a path to a valid shell variable 92M_P2V = tu:C,[./-],_,g 93 94# convert path to absolute 95.if ${MAKE_VERSION} < 20100414 96M_tA = C,.*,('cd' & \&\& 'pwd') 2> /dev/null || echo &,:sh 97.else 98M_tA = tA 99.endif 100 101# absoulte path to what we are reading. 102_PARSEDIR = ${.PARSEDIR:${M_tA}} 103 104.if ${MAKE_VERSION} >= 20170130 105# M_cmpv allows comparing dotted versions like 3.1.2 106# ${3.1.2:L:${M_cmpv}} -> 3001002 107# we use big jumps to handle 3 digits per dot: 108# ${123.456.789:L:${M_cmpv}} -> 123456789 109M_cmpv.units = 1 1000 1000000 1000000000 1000000000000 110M_cmpv = S,., ,g:C,^0*([0-9]),\1,:_:range:@i@+ $${_:[-$$i]} \* $${M_cmpv.units:[$$i]}@:S,^,expr 0 ,1:sh 111.endif 112 113# many projects use MAJOR MINOR PATCH versioning 114# ${OPENSSL:${M_M.M.P_VERSION}} is equivalent to 115# ${OPENSSL_MAJOR_VERSION}.${OPENSSL_MINOR_VERSION}.${OPENSSL_PATCH_VERSION} 116M_M.M.P_VERSION = L:@v@$${MAJOR MINOR PATCH:L:@t@$${$$v_$$t_VERSION:U0}@}@:ts. 117 118# numeric sort 119.if ${MAKE_VERSION} < 20210803 120M_On = O 121M_Onr = O 122.else 123M_On = On 124M_Onr = Onr 125.endif 126 127# Index of a word in a list. 128# eg. ${LIST:${M_Index:S,K,key,}} is the index of 129# the word "key" in ${LIST}, of course any pattern can be used. 130# If "key" appears more than once, there will be multiple 131# index values use ${M_Index:S,K,key,}:[1] to select only the first. 132M_Index = _:${M_RANGE}:@i@$${"$${_:[$$i]:MK}":?$$i:}@ 133 134# mtime of each word - assumed to be a valid pathname 135.if ${.MAKE.LEVEL} < 20230510 136M_mtime = tW:S,^,${STAT:Ustat} -f %m ,:sh 137.else 138# M_mtime_fallback can be =error to throw an error 139# or =0 to use 0, default is to use current time 140M_mtime = mtime${M_mtime_fallback:U} 141.endif 142 143