mirror of
https://github.com/freebsd/freebsd-src
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b897d72a5a
Changes since 20181221 are mostly portability related
hence the large gap in versions imported.
There are however some bug fixes, and a rework of filemon handling.
In NetBSD make/filemon/filemon_ktrace.c allows use of fktrace
and elimination of filemon(4) which has not had the TLC it needs.
FreeBSD filemon(4) is in much better shape, so bmake/filemon/filemon_dev.c
allows use of that, with a bit less overhead than the ktrace model.
Summary of changes from ChangeLog
o str.c: empty string does not match % pattern
plus unit-test changes
o var.c: import handling of old sysV style modifier using '%'
o str.c: refactor brk_string
o meta.c: meta_oodate, CHECK_VALID_META is too aggressive for CMD
a blank command is perfectly valid.
o meta.c: meta_oodate, check for corrupted meta file
earlier and more often.
* meta.c: meta_compat_parent check for USE_FILEMON
patch from Soeren Tempel
o meta.c: fix compat mode, need to call meta_job_output()
o job.c: extra fds for meta mode not needed if using filemon_dev
o meta.c: avoid passing NULL to filemon_*() when meta_needed()
returns FALSE.
o filemon/filemon_{dev,ktrace}.c: allow selection of
filemon implementation. filemon_dev.c uses the kernel module
while filemon_ktrace.c leverages the fktrace api available in
NetBSD. filemon_ktrace.c can hopefully form the basis for
adding support for other tracing mechanisms such as strace on
Linux.
o meta.c: when target is out-of-date per normal make rules
record value of .OODATE in meta file.
o parse.c: don't pass NULL to realpath(3)
some versions cannot handle it.
o parse.c: ParseDoDependency: free paths rather than assert
plus more unit-tests
156 lines
3.5 KiB
Makefile
156 lines
3.5 KiB
Makefile
# $Id: sys.mk,v 1.47 2020/04/17 21:08:17 sjg Exp $
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#
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# @(#) Copyright (c) 2003-2009, Simon J. Gerraty
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#
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# This file is provided in the hope that it will
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# be of use. There is absolutely NO WARRANTY.
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# Permission to copy, redistribute or otherwise
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# use this file is hereby granted provided that
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# the above copyright notice and this notice are
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# left intact.
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#
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# Please send copies of changes and bug-fixes to:
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# sjg@crufty.net
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#
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# Avoid putting anything platform specific in here.
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# _DEBUG_MAKE_FLAGS etc.
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.include <sys.debug.mk>
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.if !empty(_DEBUG_MAKE_FLAGS)
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.if ${_DEBUG_MAKE_SYS_DIRS:Uno:@x@${.CURDIR:M$x}@} != ""
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.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS}
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.endif
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.endif
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# useful modifiers
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.include <sys.vars.mk>
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# we expect a recent bmake
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.if !defined(_TARGETS)
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# some things we do only once
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_TARGETS := ${.TARGETS}
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.-include <sys.env.mk>
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.endif
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# we need HOST_TARGET etc below.
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.include <host-target.mk>
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# early customizations
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.-include <local.sys.env.mk>
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# Popular suffixes for C++
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CXX_SUFFIXES += .cc .cpp .cxx .C
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CXX_SUFFIXES := ${CXX_SUFFIXES:O:u}
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# find the OS specifics
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.if defined(SYS_OS_MK)
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.include <${SYS_OS_MK}>
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.else
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_sys_mk =
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.for x in ${HOST_OSTYPE} ${HOST_TARGET} ${HOST_OS} ${MACHINE} Generic
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.if empty(_sys_mk)
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.-include <sys/$x.mk>
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_sys_mk := ${.MAKE.MAKEFILES:M*/$x.mk}
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.if !empty(_sys_mk)
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_sys_mk := sys/${_sys_mk:T}
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.endif
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.endif
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.if empty(_sys_mk)
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# might be an old style
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.-include <$x.sys.mk>
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_sys_mk := ${.MAKE.MAKEFILES:M*/$x.sys.mk:T}
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.endif
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.endfor
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SYS_OS_MK := ${_sys_mk}
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.export SYS_OS_MK
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.endif
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# some options we need to know early
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OPTIONS_DEFAULT_NO += \
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DIRDEPS_BUILD \
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DIRDEPS_CACHE
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OPTIONS_DEFAULT_DEPENDENT += \
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AUTO_OBJ/DIRDEPS_BUILD \
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META_MODE/DIRDEPS_BUILD \
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STAGING/DIRDEPS_BUILD \
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.-include <options.mk>
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.if ${MK_DIRDEPS_BUILD:Uno} == "yes"
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MK_META_MODE = yes
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.-include <meta.sys.mk>
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.elif ${MK_META_MODE:Uno} == "yes"
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.MAKE.MODE = meta verbose ${META_MODE}
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.endif
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# make sure we have a harmless value
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.MAKE.MODE ?= normal
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# if you want objdirs make them automatic
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# and do it early before we compute .PATH
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.if ${MK_AUTO_OBJ:Uno} == "yes" || ${MKOBJDIRS:Uno} == "auto"
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.include <auto.obj.mk>
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.endif
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.if !empty(SRCTOP)
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.if ${.CURDIR} == ${SRCTOP}
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RELDIR = .
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.elif ${.CURDIR:M${SRCTOP}/*}
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RELDIR := ${.CURDIR:S,${SRCTOP}/,,}
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.endif
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.endif
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MACHINE_ARCH.host ?= ${_HOST_ARCH}
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MACHINE_ARCH.${MACHINE} ?= ${MACHINE}
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.if empty(MACHINE_ARCH)
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MACHINE_ARCH = ${MACHINE_ARCH.${MACHINE}}
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.endif
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.ifndef ROOT_GROUP
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ROOT_GROUP != sed -n /:0:/s/:.*//p /etc/group
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.export ROOT_GROUP
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.endif
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unix ?= We run ${_HOST_OSNAME}.
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# We need a Bourne/POSIX shell
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MAKE_SHELL ?= sh
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SHELL ?= ${MAKE_SHELL}
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# A race condition in mkdir, means that it can bail if another
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# process made a dir that mkdir expected to.
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# We repeat the mkdir -p a number of times to try and work around this.
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# We stop looping as soon as the dir exists.
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# If we get to the end of the loop, a plain mkdir will issue an error.
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Mkdirs= Mkdirs() { \
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for d in $$*; do \
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for i in 1 2 3 4 5 6; do \
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mkdir -p $$d; \
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test -d $$d && return 0; \
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done; \
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mkdir $$d || exit $$?; \
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done; }
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# this often helps with debugging
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.SUFFIXES: .cpp-out
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.c.cpp-out:
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@${COMPILE.c:N-c} -E ${.IMPSRC} | grep -v '^[ ]*$$'
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${CXX_SUFFIXES:%=%.cpp-out}:
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@${COMPILE.cc:N-c} -E ${.IMPSRC} | grep -v '^[ ]*$$'
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# late customizations
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.-include <local.sys.mk>
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# if .CURDIR is matched by any entry in DEBUG_MAKE_DIRS we
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# will apply DEBUG_MAKE_FLAGS, now.
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.if !empty(_DEBUG_MAKE_FLAGS)
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.if ${_DEBUG_MAKE_DIRS:Uno:@x@${.CURDIR:M$x}@} != ""
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.MAKEFLAGS: ${_DEBUG_MAKE_FLAGS}
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.endif
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.endif
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