diff options
Diffstat (limited to 'mk/sys.mk')
| -rw-r--r-- | mk/sys.mk | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/mk/sys.mk b/mk/sys.mk new file mode 100644 index 0000000..30eca9b --- /dev/null +++ b/mk/sys.mk @@ -0,0 +1,199 @@ +# $Id: sys.mk,v 1.35 2012/11/12 06:27:51 sjg Exp $ +# +# @(#) Copyright (c) 2003-2009, Simon J. Gerraty +# +# This file is provided in the hope that it will +# be of use. There is absolutely NO WARRANTY. +# Permission to copy, redistribute or otherwise +# use this file is hereby granted provided that +# the above copyright notice and this notice are +# left intact. +# +# Please send copies of changes and bug-fixes to: +# sjg@crufty.net +# + +# Avoid putting anything platform specific in here. + +# We use the following paradigm for preventing multiple inclusion. +# It relies on the fact that conditionals and dependencies are resolved +# at the time they are read. +# +# _this ?= ${.PARSEFILE} +# .if !target(__${_this}__) +# __${_this}__: +# +.if ${MAKE_VERSION:U0} > 20100408 +_this = ${.PARSEDIR:tA}/${.PARSEFILE} +.else +_this = ${.PARSEDIR}/${.PARSEFILE} +.endif + +# Sometimes we want to turn on debugging in just one or two places +# if .CURDIR is matched by any entry in DEBUG_MAKE_SYS_DIRS we +# will apply DEBUG_MAKE_FLAGS now. +# if an entry in DEBUG_MAKE_DIRS matches, we at the end of sys.mk +# eg. DEBUG_MAKE_FLAGS=-dv DEBUG_MAKE_SYS_DIRS="*lib/sjg" +# use DEBUG_MAKE_FLAGS0 to apply only to .MAKE.LEVEL 0 +# +.if ${.MAKE.LEVEL:U1} == 0 +# we use indirection, to simplify the tests below, and incase +# DEBUG_* were given on our command line. +_DEBUG_MAKE_FLAGS = ${DEBUG_MAKE_FLAGS0} +_DEBUG_MAKE_SYS_DIRS = ${DEBUG_MAKE_SYS_DIRS0:U${DEBUG_MAKE_SYS_DIRS}} +_DEBUG_MAKE_DIRS = ${DEBUG_MAKE_DIRS0:U${DEBUG_MAKE_DIRS}} +.else +_DEBUG_MAKE_FLAGS = ${DEBUG_MAKE_FLAGS} +_DEBUG_MAKE_SYS_DIRS = ${DEBUG_MAKE_SYS_DIRS} +_DEBUG_MAKE_DIRS = ${DEBUG_MAKE_DIRS} +.endif + +.if !empty(_DEBUG_MAKE_FLAGS) +.if ${_DEBUG_MAKE_SYS_DIRS:Uno:@x@${.CURDIR:M$x}@} != "" +.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS} +.endif +.endif + +# if this is an ancient version of bmake +MAKE_VERSION ?= 0 +.if ${MAKE_VERSION:M*make-*} +# turn it into what we want - just the date +MAKE_VERSION := ${MAKE_VERSION:[1]:C,.*-,,} +.endif + +# some useful modifiers + +# A useful trick for testing multiple :M's against something +# :L says to use the variable's name as its value - ie. literal +# got = ${clean* destroy:${M_ListToMatch:S,V,.TARGETS,}} +M_ListToMatch = L:@m@$${V:M$$m}@ +# match against our initial targets (see above) +M_L_TARGETS = ${M_ListToMatch:S,V,_TARGETS,} + +# turn a list into a set of :N modifiers +# NskipFoo = ${Foo:${M_ListToSkip}} +M_ListToSkip= O:u:ts::S,:,:N,g:S,^,N, + +# type should be a builtin in any sh since about 1980, +# AUTOCONF := ${autoconf:L:${M_whence}} +M_type = @x@(type $$x 2> /dev/null); echo;@:sh:[0]:N* found*:[@]:C,[()],,g +M_whence = ${M_type}:M/* + +# convert a path to a valid shell variable +M_P2V = tu:C,[./-],_,g + +# convert path to absolute +.if ${MAKE_VERSION:U0} > 20100408 +M_tA = tA +.else +M_tA = C,.*,('cd' & \&\& 'pwd') 2> /dev/null || echo &,:sh +.endif + +# absoulte path to what we are reading. +_PARSEDIR = ${.PARSEDIR:${M_tA}} + +# we expect a recent bmake +.if !defined(_TARGETS) +# some things we do only once +_TARGETS := ${.TARGETS} +.-include <sys.env.mk> +.endif + +# we need HOST_TARGET etc below. +.include <host-target.mk> + +# find the OS specifics +.if defined(SYS_OS_MK) +.include <${SYS_OS_MK}> +.else +_sys_mk = +.for x in ${HOST_OSTYPE} ${HOST_TARGET} ${HOST_OS} ${MACHINE} Generic +.if empty(_sys_mk) +.-include <sys/$x.mk> +_sys_mk := ${.MAKE.MAKEFILES:M*/$x.mk} +.if !empty(_sys_mk) +_sys_mk := sys/${_sys_mk:T} +.endif +.endif +.if empty(_sys_mk) +# might be an old style +.-include <$x.sys.mk> +_sys_mk := ${.MAKE.MAKEFILES:M*/$x.sys.mk:T} +.endif +.endfor + +SYS_OS_MK := ${_sys_mk} +.export SYS_OS_MK +.endif + +# allow customization without editing. +.-include <local.sys.mk> + +# if you want objdirs make them automatic +.if ${MKOBJDIRS:Uno} == "auto" +.include <auto.obj.mk> +.endif + +.if !empty(SRCTOP) +.if ${.CURDIR} == ${SRCTOP} +RELDIR = . +.elif ${.CURDIR:M${SRCTOP}/*} +RELDIR := ${.CURDIR:S,${SRCTOP}/,,} +.endif +.endif + +MACHINE_ARCH.host ?= ${_HOST_ARCH} +MACHINE_ARCH.${MACHINE} ?= ${MACHINE} +.if empty(MACHINE_ARCH) +MACHINE_ARCH = ${MACHINE_ARCH.${MACHINE}} +.endif + +.ifndef ROOT_GROUP +ROOT_GROUP != sed -n /:0:/s/:.*//p /etc/group +.export ROOT_GROUP +.endif + +unix ?= We run ${_HOST_OSNAME}. + +# A race condition in mkdir, means that it can bail if another +# process made a dir that mkdir expected to. +# We repeat the mkdir -p a number of times to try and work around this. +# We stop looping as soon as the dir exists. +# If we get to the end of the loop, a plain mkdir will issue an error. +Mkdirs= Mkdirs() { \ + for d in $$*; do \ + for i in 1 2 3 4 5 6; do \ + mkdir -p $$d; \ + test -d $$d && return 0; \ + done; \ + mkdir $$d || exit $$?; \ + done; } + +# this often helps with debugging +.SUFFIXES: .cpp-out + +.c.cpp-out: + @${COMPILE.c:N-c} -E ${.IMPSRC} | grep -v '^[ ]*$$' + +.cc.cpp-out: + @${COMPILE.cc:N-c} -E ${.IMPSRC} | grep -v '^[ ]*$$' + +# we don't include own.mk but user can expect -DWITH_META_MODE to work +.if defined(WITHOUT_META_MODE) +USE_META= no +.elif defined(WITH_META_MODE) +USE_META= yes +.endif +.if ${USE_META:Uno} == "yes" +.-include <meta.sys.mk> +.endif +# make sure we have a harmless value +.MAKE.MODE ?= normal + +# if .CURDIR is matched by any entry in DEBUG_MAKE_DIRS we +# will apply DEBUG_MAKE_FLAGS, now. +.if !empty(_DEBUG_MAKE_FLAGS) +.if ${_DEBUG_MAKE_DIRS:Uno:@x@${.CURDIR:M$x}@} != "" +.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS} +.endif +.endif |