1e55525ea3
Using buildworld, installworld, buildworld. It is expected that nothing should rebuild. However any host tool used could have its timestamp updated. Any library used by dynamic tools could have its timestamp updated. The filemon(4) data in the .meta files captures all reads to these files. This causes the 2nd buildworld to rebuild everything since host tools and files have been updated. Because the build is self-reliant and bootstraps itself, it should be safe to ignore mtime changes on host files used during the build. Host files should only impact the build of legacy, build-tools, bootstrap-tools, cross-tools, but those are already intended to be reproducible from its own bootstrapping. It is possible in a rare case that a bug in a host file does produce a broken build tool. If that happens it will just have to be communicated properly. An alternative solution would be to update the mtime of all files in the object directory after installworld so that the host files are not newer than the object files. That also requires special care for read-only obj directories and special care to not mess with any intended timestamps in the build, such as done for reproducibility. Reported by: many Sponsored by: EMC / Isilon Storage Division
465 lines
10 KiB
Makefile
465 lines
10 KiB
Makefile
# from: @(#)sys.mk 8.2 (Berkeley) 3/21/94
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# $FreeBSD$
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unix ?= We run FreeBSD, not UNIX.
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.FreeBSD ?= true
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.if !defined(%POSIX)
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#
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# MACHINE_CPUARCH defines a collection of MACHINE_ARCH. Machines with
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# the same MACHINE_ARCH can run each other's binaries, so it necessarily
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# has word size and endian swizzled in. However, support files for
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# these machines often are shared amongst all combinations of size
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# and/or endian. This is called MACHINE_CPU in NetBSD, but that's used
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# for something different in FreeBSD.
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#
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MACHINE_CPUARCH=${MACHINE_ARCH:C/mips(n32|64)?(el)?/mips/:C/arm(v6)?(eb|hf)?/arm/:C/powerpc64/powerpc/:C/riscv64/riscv/}
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.endif
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# Some options we need now
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__DEFAULT_NO_OPTIONS= \
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DIRDEPS_BUILD \
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DIRDEPS_CACHE
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__DEFAULT_DEPENDENT_OPTIONS= \
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AUTO_OBJ/DIRDEPS_BUILD \
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META_MODE/DIRDEPS_BUILD \
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STAGING/DIRDEPS_BUILD \
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SYSROOT/DIRDEPS_BUILD
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__ENV_ONLY_OPTIONS:= \
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${__DEFAULT_NO_OPTIONS} \
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${__DEFAULT_YES_OPTIONS} \
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${__DEFAULT_DEPENDENT_OPTIONS:H}
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# early include for customization
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# see local.sys.mk below
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# Not included when building in fmake compatibility mode (still needed
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# for older system support)
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.if defined(.PARSEDIR)
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.sinclude <local.sys.env.mk>
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.include <bsd.mkopt.mk>
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.if ${MK_DIRDEPS_BUILD} == "yes"
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.sinclude <meta.sys.mk>
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.elif ${MK_META_MODE} == "yes" && defined(.MAKEFLAGS) && ${.MAKEFLAGS:M-B} == ""
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# verbose will show .MAKE.META.PREFIX for each target.
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META_MODE+= meta verbose
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.if !defined(NO_META_MISSING)
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META_MODE+= missing-meta=yes
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.endif
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# silent will hide command output if a .meta file is created.
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.if !defined(NO_SILENT)
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META_MODE+= silent=yes
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.endif
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.if !exists(/dev/filemon)
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.if ${UPDATE_DEPENDFILE:Uyes:tl} != "no" && !defined(NO_FILEMON)
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.error ${.newline}ERROR: The filemon module (/dev/filemon) is not loaded.
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.endif
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META_MODE+= nofilemon
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.endif
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# Require filemon data with bmake
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.if empty(META_MODE:Mnofilemon)
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META_MODE+= missing-filemon=yes
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.endif
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.endif
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META_MODE?= normal
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.export META_MODE
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.MAKE.MODE?= ${META_MODE}
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.if !empty(.MAKE.MODE:Mmeta) && !defined(NO_META_IGNORE_HOST)
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# Ignore host file changes that will otherwise cause
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# buildworld -> installworld -> buildworld to rebuild everything.
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# Since the build is self-reliant and bootstraps everything it needs,
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# this should not be a real problem for incremental builds.
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# Note that these are prefix matching, so /lib matches /libexec.
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.MAKE.META.IGNORE_PATHS+= \
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${__MAKE_SHELL} \
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/bin \
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/lib \
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/rescue \
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/sbin \
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/usr/bin \
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/usr/include \
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/usr/lib \
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/usr/sbin \
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/usr/share \
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.endif
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.if ${MK_AUTO_OBJ} == "yes"
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# This needs to be done early - before .PATH is computed
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# Don't do this for 'make showconfig' as it enables all options where meta mode
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# is not expected.
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.if !make(showconfig)
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.sinclude <auto.obj.mk>
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.endif
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.endif
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.else # bmake
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.include <bsd.mkopt.mk>
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.endif
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# If the special target .POSIX appears (without prerequisites or
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# commands) before the first noncomment line in the makefile, make shall
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# process the makefile as specified by the Posix 1003.2 specification.
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# make(1) sets the special macro %POSIX in this case (to the actual
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# value "1003.2", for what it's worth).
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#
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# The rules below use this macro to distinguish between Posix-compliant
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# and default behaviour.
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#
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# This functionality is currently broken, since make(1) processes sys.mk
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# before reading any other files, and consequently has no opportunity to
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# set the %POSIX macro before we read this point.
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.if defined(%POSIX)
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.SUFFIXES: .o .c .y .l .a .sh .f
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.else
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.SUFFIXES: .out .a .ln .o .c .cc .cpp .cxx .C .m .F .f .e .r .y .l .S .asm .s .cl .p .h .sh
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.endif
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AR ?= ar
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.if defined(%POSIX)
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ARFLAGS ?= -rv
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.else
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ARFLAGS ?= -crD
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.endif
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RANLIB ?= ranlib
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.if !defined(%POSIX)
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RANLIBFLAGS ?= -D
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.endif
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AS ?= as
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AFLAGS ?=
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ACFLAGS ?=
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.if defined(%POSIX)
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CC ?= c89
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CFLAGS ?= -O
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.else
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CC ?= cc
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.if ${MACHINE_CPUARCH} == "arm" || ${MACHINE_CPUARCH} == "mips"
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CFLAGS ?= -O -pipe
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.else
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CFLAGS ?= -O2 -pipe
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.endif
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.if defined(NO_STRICT_ALIASING)
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CFLAGS += -fno-strict-aliasing
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.endif
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.endif
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PO_CFLAGS ?= ${CFLAGS}
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# cp(1) is used to copy source files to ${.OBJDIR}, make sure it can handle
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# read-only files as non-root by passing -f.
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CP ?= cp -f
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CPP ?= cpp
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# C Type Format data is required for DTrace
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CTFFLAGS ?= -L VERSION
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CTFCONVERT ?= ctfconvert
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CTFMERGE ?= ctfmerge
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.if defined(CFLAGS) && (${CFLAGS:M-g} != "")
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CTFFLAGS += -g
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.endif
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CXX ?= c++
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CXXFLAGS ?= ${CFLAGS:N-std=*:N-Wnested-externs:N-W*-prototypes:N-Wno-pointer-sign:N-Wold-style-definition}
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PO_CXXFLAGS ?= ${CXXFLAGS}
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DTRACE ?= dtrace
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DTRACEFLAGS ?= -C -x nolibs
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.if empty(.MAKEFLAGS:M-s)
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ECHO ?= echo
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ECHODIR ?= echo
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.else
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ECHO ?= true
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.if ${.MAKEFLAGS:M-s} == "-s"
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ECHODIR ?= echo
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.else
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ECHODIR ?= true
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.endif
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.endif
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.if ${.MAKEFLAGS:M-N}
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# bmake -N is supposed to skip executing anything but it does not skip
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# exeucting '+' commands. The '+' feature is used where .MAKE
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# is not safe for the entire target. -N is intended to skip building sub-makes
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# so it executing '+' commands is not right. Work around the bug by not
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# setting '+' when -N is used.
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_+_ ?=
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.else
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_+_ ?= +
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.endif
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.if defined(%POSIX)
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FC ?= fort77
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FFLAGS ?= -O 1
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.else
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FC ?= f77
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FFLAGS ?= -O
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.endif
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EFLAGS ?=
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INSTALL ?= install
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LEX ?= lex
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LFLAGS ?=
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LD ?= ld
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LDFLAGS ?= # LDFLAGS is for CC,
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_LDFLAGS = ${LDFLAGS:S/-Wl,//g} # strip -Wl, for LD
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LINT ?= lint
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LINTFLAGS ?= -cghapbx
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LINTKERNFLAGS ?= ${LINTFLAGS}
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LINTOBJFLAGS ?= -cghapbxu -i
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LINTOBJKERNFLAGS?= ${LINTOBJFLAGS}
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LINTLIBFLAGS ?= -cghapbxu -C ${LIB}
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MAKE ?= make
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.if !defined(%POSIX)
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NM ?= nm
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NMFLAGS ?=
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OBJC ?= cc
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OBJCFLAGS ?= ${OBJCINCLUDES} ${CFLAGS} -Wno-import
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OBJCOPY ?= objcopy
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OBJDUMP ?= objdump
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PC ?= pc
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PFLAGS ?=
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RC ?= f77
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RFLAGS ?=
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.endif
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SHELL ?= sh
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.if !defined(%POSIX)
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SIZE ?= size
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.endif
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YACC ?= yacc
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.if defined(%POSIX)
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YFLAGS ?=
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.else
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YFLAGS ?= -d
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.endif
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.if defined(%POSIX)
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# Posix 1003.2 mandated rules
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#
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# Quoted directly from the Posix 1003.2 draft, only the macros
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# $@, $< and $* have been replaced by ${.TARGET}, ${.IMPSRC}, and
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# ${.PREFIX}, resp.
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# SINGLE SUFFIX RULES
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.c:
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${CC} ${CFLAGS} ${LDFLAGS} -o ${.TARGET} ${.IMPSRC}
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.f:
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${FC} ${FFLAGS} ${LDFLAGS} -o ${.TARGET} ${.IMPSRC}
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.sh:
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cp -f ${.IMPSRC} ${.TARGET}
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chmod a+x ${.TARGET}
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# DOUBLE SUFFIX RULES
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.c.o:
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${CC} ${CFLAGS} -c ${.IMPSRC}
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.f.o:
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${FC} ${FFLAGS} -c ${.IMPSRC}
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.y.o:
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${YACC} ${YFLAGS} ${.IMPSRC}
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${CC} ${CFLAGS} -c y.tab.c
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rm -f y.tab.c
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mv y.tab.o ${.TARGET}
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.l.o:
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${LEX} ${LFLAGS} ${.IMPSRC}
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${CC} ${CFLAGS} -c lex.yy.c
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rm -f lex.yy.c
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mv lex.yy.o ${.TARGET}
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.y.c:
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${YACC} ${YFLAGS} ${.IMPSRC}
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mv y.tab.c ${.TARGET}
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.l.c:
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${LEX} ${LFLAGS} ${.IMPSRC}
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mv lex.yy.c ${.TARGET}
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.c.a:
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${CC} ${CFLAGS} -c ${.IMPSRC}
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${AR} ${ARFLAGS} ${.TARGET} ${.PREFIX}.o
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rm -f ${.PREFIX}.o
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.f.a:
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${FC} ${FFLAGS} -c ${.IMPSRC}
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${AR} ${ARFLAGS} ${.TARGET} ${.PREFIX}.o
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rm -f ${.PREFIX}.o
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.else
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# non-Posix rule set
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.sh:
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cp -f ${.IMPSRC} ${.TARGET}
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chmod a+x ${.TARGET}
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.c.ln:
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${LINT} ${LINTOBJFLAGS} ${CFLAGS:M-[DIU]*} ${.IMPSRC} || \
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touch ${.TARGET}
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.cc.ln .C.ln .cpp.ln .cxx.ln:
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${LINT} ${LINTOBJFLAGS} ${CXXFLAGS:M-[DIU]*} ${.IMPSRC} || \
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touch ${.TARGET}
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.c:
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${CC} ${CFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} -o ${.TARGET}
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${CTFCONVERT_CMD}
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.c.o:
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${CC} ${CFLAGS} -c ${.IMPSRC} -o ${.TARGET}
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${CTFCONVERT_CMD}
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.cc .cpp .cxx .C:
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${CXX} ${CXXFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} -o ${.TARGET}
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.cc.o .cpp.o .cxx.o .C.o:
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${CXX} ${CXXFLAGS} -c ${.IMPSRC} -o ${.TARGET}
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.m.o:
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${OBJC} ${OBJCFLAGS} -c ${.IMPSRC} -o ${.TARGET}
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${CTFCONVERT_CMD}
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.p.o:
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${PC} ${PFLAGS} -c ${.IMPSRC} -o ${.TARGET}
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${CTFCONVERT_CMD}
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.e .r .F .f:
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${FC} ${RFLAGS} ${EFLAGS} ${FFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} \
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-o ${.TARGET}
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.e.o .r.o .F.o .f.o:
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${FC} ${RFLAGS} ${EFLAGS} ${FFLAGS} -c ${.IMPSRC} -o ${.TARGET}
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.S.o:
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${CC:N${CCACHE_BIN}} ${CFLAGS} ${ACFLAGS} -c ${.IMPSRC} -o ${.TARGET}
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${CTFCONVERT_CMD}
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.asm.o:
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${CC:N${CCACHE_BIN}} -x assembler-with-cpp ${CFLAGS} ${ACFLAGS} -c ${.IMPSRC} \
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-o ${.TARGET}
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${CTFCONVERT_CMD}
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.s.o:
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${AS} ${AFLAGS} -o ${.TARGET} ${.IMPSRC}
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${CTFCONVERT_CMD}
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# XXX not -j safe
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.y.o:
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${YACC} ${YFLAGS} ${.IMPSRC}
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${CC} ${CFLAGS} -c y.tab.c -o ${.TARGET}
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rm -f y.tab.c
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${CTFCONVERT_CMD}
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.l.o:
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${LEX} -t ${LFLAGS} ${.IMPSRC} > ${.PREFIX}.tmp.c
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${CC} ${CFLAGS} -c ${.PREFIX}.tmp.c -o ${.TARGET}
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rm -f ${.PREFIX}.tmp.c
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${CTFCONVERT_CMD}
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# XXX not -j safe
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.y.c:
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${YACC} ${YFLAGS} ${.IMPSRC}
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mv y.tab.c ${.TARGET}
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.l.c:
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${LEX} -t ${LFLAGS} ${.IMPSRC} > ${.TARGET}
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.s.out .c.out .o.out:
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${CC} ${CFLAGS} ${LDFLAGS} ${.IMPSRC} ${LDLIBS} -o ${.TARGET}
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${CTFCONVERT_CMD}
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.f.out .F.out .r.out .e.out:
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${FC} ${EFLAGS} ${RFLAGS} ${FFLAGS} ${LDFLAGS} ${.IMPSRC} \
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${LDLIBS} -o ${.TARGET}
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rm -f ${.PREFIX}.o
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${CTFCONVERT_CMD}
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# XXX not -j safe
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.y.out:
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${YACC} ${YFLAGS} ${.IMPSRC}
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${CC} ${CFLAGS} ${LDFLAGS} y.tab.c ${LDLIBS} -ly -o ${.TARGET}
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rm -f y.tab.c
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${CTFCONVERT_CMD}
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.l.out:
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${LEX} -t ${LFLAGS} ${.IMPSRC} > ${.PREFIX}.tmp.c
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${CC} ${CFLAGS} ${LDFLAGS} ${.PREFIX}.tmp.c ${LDLIBS} -ll -o ${.TARGET}
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rm -f ${.PREFIX}.tmp.c
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${CTFCONVERT_CMD}
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# Pull in global settings.
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__MAKE_CONF?=/etc/make.conf
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.if exists(${__MAKE_CONF})
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.include "${__MAKE_CONF}"
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.endif
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# late include for customization
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.sinclude <local.sys.mk>
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.if defined(__MAKE_SHELL) && !empty(__MAKE_SHELL)
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SHELL= ${__MAKE_SHELL}
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.SHELL: path=${__MAKE_SHELL}
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.endif
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# Tell bmake to expand -V VAR by default
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.MAKE.EXPAND_VARIABLES= yes
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# Tell bmake the makefile preference
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.MAKE.MAKEFILE_PREFERENCE= BSDmakefile makefile Makefile
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# Tell bmake to always pass job tokens, regardless of target depending on
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# .MAKE or looking like ${MAKE}/${.MAKE}/$(MAKE)/$(.MAKE)/make.
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.MAKE.ALWAYS_PASS_JOB_QUEUE= yes
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# By default bmake does *not* use set -e
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# when running target scripts, this is a problem for many makefiles here.
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# So define a shell that will do what FreeBSD expects.
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.ifndef WITHOUT_SHELL_ERRCTL
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__MAKE_SHELL?=/bin/sh
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.SHELL: name=sh \
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quiet="set -" echo="set -v" filter="set -" \
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hasErrCtl=yes check="set -e" ignore="set +e" \
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echoFlag=v errFlag=e \
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path=${__MAKE_SHELL}
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.endif
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# Hack for ports compatibility. Historically, ports makefiles have
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# assumed they can examine MACHINE_CPU without including anything
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# because this was automatically included in sys.mk. For /usr/src,
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# this file has moved to being included from bsd.opts.mk. Until all
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# the ports files are modernized, and a reasonable transition
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# period has passed, include it while we're in a ports tree here
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# to preserve historic behavior.
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.if exists(${.CURDIR}/../../Mk/bsd.port.mk)
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.include <bsd.cpu.mk>
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.endif
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.endif # ! Posix
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