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Diff for /src/BUILDING between version 1.54 and 1.77

version 1.54, 2006/01/04 15:35:20 version 1.77, 2008/09/06 23:23:17
Line 3  BUILDING(8)             NetBSD System Ma
Line 3  BUILDING(8)             NetBSD System Ma
 NAME  NAME
      BUILDING -- Procedure for building NetBSD from source code.       BUILDING -- Procedure for building NetBSD from source code.
   
 STATUS  
      This document is a work-in-progress.  As such, the information described  
      here may not match the reality of the build system as of this writing.  
      Once this document is completely in sync with reality, this paragraph  
      will be removed.  
   
      Discrepancies between this documentation and the current reality of  
      implementation are noted specially, as with the note below:  
   
      Note: This document applies only to platforms which use the new toolchain  
      as indicated by the default setting of TOOLCHAIN_MISSING in <bsd.own.mk>.  
      Platforms which have not yet been switched to the new toolchain should  
      continue building traditionally, using the notes specified in the file  
      UPDATING.  
   
 REQUIREMENTS  REQUIREMENTS
      NetBSD is designed to be buildable on most POSIX-compliant host systems.       NetBSD is designed to be buildable on most POSIX-compliant host systems.
      The basic build procedure is the same whether compiling natively (on the       The basic build procedure is the same whether compiling natively (on the
Line 69  FILES
Line 54  FILES
                     shot, such as files installed in DESTDIR/etc on the desti-                      shot, such as files installed in DESTDIR/etc on the desti-
                     nation system, boot media, and release notes.                      nation system, boot media, and release notes.
   
      regress/       Regression test harness.  Can be cross-compiled, but only       tests/, regress/
                     run natively.                      Regression test harness.  Can be cross-compiled, but only
                       run natively.  tests/ uses the atf(7) test framework;
                       regress/ contains older tests that have not yet been
                       migrated to atf(7).
   
      sys/           NetBSD kernel sources.       sys/           NetBSD kernel sources.
   
Line 94  CONFIGURATION
Line 82  CONFIGURATION
    Environment variables     Environment variables
      Several environment variables control the behaviour of NetBSD builds.       Several environment variables control the behaviour of NetBSD builds.
   
        HOST_SH           Path name to a POSIX-compliant shell.  If this is not
                          set explicitly, then the default is set using heuris-
                          tics dependent on the host platform, or from the shell
                          under which build.sh is executed (if that can be deter-
                          mined), or using the first copy of sh found in PATH.
                          If the host system's /bin/sh is not POSIX-compliant, we
                          suggest that you build using commands like
   
                                HOST_SH=/path/to/working/shell
                                export HOST_SH
                                ${HOST_SH} build.sh [options]
   
      HOST_CC           Path name to C compiler used to create the toolchain.       HOST_CC           Path name to C compiler used to create the toolchain.
   
      HOST_CXX          Path name to C++ compiler used to create the toolchain.       HOST_CXX          Path name to C++ compiler used to create the toolchain.
   
      MACHINE           Machine type.       MACHINE           Machine type, e.g., ``macppc''.
   
      MACHINE_ARCH      Machine architecture.       MACHINE_ARCH      Machine architecture, e.g., ``powerpc''.
   
      MAKE              Path name to invoke make(1) as.       MAKE              Path name to invoke make(1) as.
   
      MAKEFLAGS         Flags to invoke make(1) with.       MAKEFLAGS         Flags to invoke make(1) with.
   
      MAKEOBJDIR        Directory to use as the .OBJDIR for the current direc-       MAKEOBJDIR        Directory to use as the .OBJDIR for the current direc-
                        tory.  Used only if MAKEOBJDIRPREFIX is not defined.                         tory.  The value is subjected to variable expansion by
                        MAKEOBJDIR can only be provided in the environment or                         make(1).  Typical usage is to set this variable to a
                        via the -O flag of build.sh.                         value involving the use of `${.CURDIR:S...}' or
                          `${.CURDIR:C...}', to derive the value of .OBJDIR from
                          the value of .CURDIR.  Used only if MAKEOBJDIRPREFIX is
                          not defined.  MAKEOBJDIR can be provided only in the
                          environment or via the -O flag of build.sh; it cannot
                          usefully be set inside a Makefile.
   
      MAKEOBJDIRPREFIX  Top level directory of the object directory tree.  If       MAKEOBJDIRPREFIX  Top level directory of the object directory tree.  If
                        this is defined, ${MAKEOBJDIRPREFIX}/${.CURDIR} is used                         specified, must be an absolute path.  If this is
                        as the .OBJDIR for the current directory.  The current                         defined, ${MAKEOBJDIRPREFIX}/${.CURDIR} is used as the
                        directory may be read only.  MAKEOBJDIRPREFIX can only                         .OBJDIR for the current directory.  The current direc-
                        be provided in the environment or via the -M flag of                         tory may be read only.  MAKEOBJDIRPREFIX can be pro-
                        build.sh.                         vided only in the environment or via the -M flag of
                          build.sh; it cannot usefully be set inside a Makefile.
   
    "make" variables     "make" variables
      Several variables control the behavior of NetBSD builds.  Unless other-       Several variables control the behavior of NetBSD builds.  Unless other-
Line 128  CONFIGURATION
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                  configuration file in order to set additional build parame-                   configuration file in order to set additional build parame-
                  ters, such as compiler flags.                   ters, such as compiler flags.
   
        BUILDSEED   GCC uses random numbers when compiling C++ code.  This vari-
                    able seeds the gcc random number generator using the -fran-
                    dom-seed flag with this value.  By default, it is set to
                    NetBSD-(majorversion).  Using a fixed value causes C++ bina-
                    ries to be the same when built from the same sources.  Addi-
                    tional information is available in the GCC documentation of
                    -frandom-seed.
   
      DESTDIR     Directory to contain the built NetBSD system.  If set, spe-       DESTDIR     Directory to contain the built NetBSD system.  If set, spe-
                  cial options are passed to the compilation tools to prevent                   cial options are passed to the compilation tools to prevent
                  their default use of the host system's /usr/include,                   their default use of the host system's /usr/include,
                  /usr/lib, and so forth.  This pathname should not end with a                   /usr/lib, and so forth.  This pathname must be an absolute
                  slash (/) character (for installation into the system's root                   path, and should not end with a slash (/) character.  (For
                  directory, set DESTDIR to an empty string).  The directory                   installation into the system's root directory, set DESTDIR to
                  must reside on a file system which supports long file names                   an empty string, not to ``/'').  The directory must reside on
                  and hard links.                   a file system which supports long file names and hard links.
   
                  Default: Empty string if USETOOLS is ``yes''; unset other-                   Default: Empty string if USETOOLS is ``yes''; unset other-
                  wise.                   wise.
   
                  Note: build.sh will provide a default of destdir.MACHINE (in                   Note: build.sh will provide a default of destdir.MACHINE (in
                  the top-level .OBJDIR) unless run in `expert' mode                   the top-level .OBJDIR) unless run in `expert' mode.
   
      MAKECONF    The name of the make(1) configuration file.  Only settable in       MAKECONF    The name of the make(1) configuration file.  Only settable in
                  the process environment.                   the process environment.
Line 179  CONFIGURATION
Line 193  CONFIGURATION
   
                  Default: ``yes''                   Default: ``yes''
   
        MKHTML      Can be set to ``yes'' or ``no''.  Indicates whether prefor-
                    matted HTML manual pages will be built and installed
   
                    Default: ``yes''
   
      MKHOSTOBJ   Can be set to ``yes'' or ``no''.  If set to ``yes'', then for       MKHOSTOBJ   Can be set to ``yes'' or ``no''.  If set to ``yes'', then for
                  programs intended to be run on the compile host, the name,                   programs intended to be run on the compile host, the name,
                  release, and architecture of the host operating system will                   release, and architecture of the host operating system will
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                  Default: ``yes''                   Default: ``yes''
   
                    Note that setting MKOBJ to ``no'' is not recommended and may
                    cause problems when updating the tree with cvs(1).
   
      MKPIC       Can be set to ``yes'' or ``no''.  Indicates whether shared       MKPIC       Can be set to ``yes'' or ``no''.  Indicates whether shared
                  objects and libraries will be created and installed during a                   objects and libraries will be created and installed during a
                  build.  If set to ``no'', the entire built system will be                   build.  If set to ``no'', the entire built system will be
Line 279  CONFIGURATION
Line 301  CONFIGURATION
      MKX11       Can be set to ``yes'' or ``no''.  Indicates whether X11R6 is       MKX11       Can be set to ``yes'' or ``no''.  Indicates whether X11R6 is
                  built from X11SRCDIR.                   built from X11SRCDIR.
   
                    Mutually exclusive to MKXORG != no.
   
                    Default: ``no''
   
        MKXORG      Can be set to ``yes'' or ``no''.  Indicates whether X11R7
                    (modular Xorg) is built from X11SRCDIR.
   
                    Mutually exclusive to MKX11 != no.
   
                  Default: ``no''                   Default: ``no''
   
      TOOLDIR     Directory to hold the host tools, once built.  This directory       TOOLDIR     Directory to hold the host tools, once built.  If specified,
                  should be unique to a given host system and NetBSD source                   must be an absolute path.  This directory should be unique to
                  tree.  (However, multiple targets may share the same TOOLDIR;                   a given host system and NetBSD source tree.  (However, multi-
                  the target-dependent files have unique names.)  If unset, a                   ple targets may share the same TOOLDIR; the target-dependent
                  default based on the uname(1) information of the host plat-                   files have unique names.)  If unset, a default based on the
                  form will be created in the .OBJDIR of src.                   uname(1) information of the host platform will be created in
                    the .OBJDIR of src.
   
                  Default: Unset.                   Default: Unset.
   
Line 308  CONFIGURATION
Line 340  CONFIGURATION
                         build or runtime problems when building the whole                          build or runtime problems when building the whole
                         NetBSD source tree.                          NetBSD source tree.
   
                  Default: ``yes'' if building all or part of a whole NetBSD                   Default: ``yes'', unless TOOLCHAIN_MISSING is set to ``yes''.
                  source tree (detected automatically); ``no'' otherwise (to  
                  preserve traditional semantics of the <bsd.*.mk> make(1)  
                  include files).  
   
      X11SRCDIR   Directory containing the X11R6 source.  The main X11R6 source                   USETOOLS is also set to ``no'' when using <bsd.*.mk> outside
                  is found in X11SRCDIR/xfree/xc.                   the NetBSD source tree.
   
        X11SRCDIR   Directory containing the X11R6 source.  If specified, must be
                    an absolute path.  The main X11R6 source is found in
                    X11SRCDIR/xfree/xc.
   
                  Default: ``/usr/xsrc''                   Default: ``/usr/xsrc''
   
Line 323  CONFIGURATION
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      manually building subtrees of the NetBSD source code.       manually building subtrees of the NetBSD source code.
   
      INSTALLWORLDDIR  Location for the ``make installworld'' target to install       INSTALLWORLDDIR  Location for the ``make installworld'' target to install
                       to.                        to.  If specified, must be an absolute path.
   
                       Default: ``/''                        Default: ``/''
   
Line 333  CONFIGURATION
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                       Default: ``no''                        Default: ``no''
   
                         If using build.sh, the default is ``yes''.  This may be
                         set back to ``no'' by giving build.sh the -o option.
   
      MKUPDATE         Can be set to ``yes'' or ``no''.  If set, then in addi-       MKUPDATE         Can be set to ``yes'' or ``no''.  If set, then in addi-
                       tion to the effects described for MKUPDATE=yes above,                        tion to the effects described for MKUPDATE=yes above,
                       this implies the effects of NOCLEANDIR (i.e., ``make                        this implies the effects of NOCLEANDIR (i.e., ``make
Line 340  CONFIGURATION
Line 376  CONFIGURATION
   
                       Default: ``no''                        Default: ``no''
   
      NBUILDJOBS       Now obsolete.  Use the make(1) option -j, instead (see                        If using build.sh, this may be set by giving the -u
                       below)                        option.
   
        NBUILDJOBS       Now obsolete.  Use the make(1) option -j, instead.  See
                         below.
   
                       Default: Unset.                        Default: Unset.
   
Line 352  CONFIGURATION
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                       Default: Unset.                        Default: Unset.
   
                         See also MKUPDATE.
   
      NODISTRIBDIRS    If set, avoids the ``make distrib-dirs'' phase of a full       NODISTRIBDIRS    If set, avoids the ``make distrib-dirs'' phase of a full
                       build.  This skips running mtree(8) on DESTDIR, useful                        build.  This skips running mtree(8) on DESTDIR, useful
                       on systems where building as an unprivileged user, or                        on systems where building as an unprivileged user, or
Line 366  CONFIGURATION
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                       because the system include files have changed.  However,                        because the system include files have changed.  However,
                       this option should not be used when updating the entire                        this option should not be used when updating the entire
                       NetBSD source tree arbitrarily; it is suggested to use                        NetBSD source tree arbitrarily; it is suggested to use
                       MKUPDATE=yes in that case.                        MKUPDATE=yes instead in that case.
   
                       Default: Unset.                        Default: Unset.
   
      RELEASEDIR       If set, specifies the directory to which a release(7)       RELEASEDIR       If set, specifies the directory to which a release(7)
                       layout will be written at the end of a ``make release''.                        layout will be written at the end of a ``make release''.
                         If specified, must be an absolute path.
   
                       Default: Unset.                        Default: Unset.
   
                       Note: build.sh will provide a default of releasedir (in                        Note: build.sh will provide a default of releasedir (in
                       the top-level .OBJDIR) unless run in `expert' mode                        the top-level .OBJDIR) unless run in `expert' mode.
   
 BUILDING  BUILDING
    "make" command line options     "make" command line options
Line 385  BUILDING
Line 427  BUILDING
   
      -j njob    Run up to njob make(1) subjobs in parallel.  Makefiles should       -j njob    Run up to njob make(1) subjobs in parallel.  Makefiles should
                 use .WAIT or have explicit dependencies as necessary to                  use .WAIT or have explicit dependencies as necessary to
                 enforce build ordering.  If you see build failures with -j,                  enforce build ordering.
                 please save complete build logs so the failures can be ana-  
                 lyzed.  
   
      -m dir     Specify the default directory for searching for system Make-       -m dir     Specify the default directory for searching for system Make-
                 file segments, mainly the <bsd.*.mk> files.  When building any                  file segments, mainly the <bsd.*.mk> files.  When building any
                 full NetBSD source tree, this should be set to the                  full NetBSD source tree, this should be set to the
                 ``share/mk'' directory in the source tree.  (This is set auto-                  ``share/mk'' directory in the source tree.  This is set auto-
                 matically when building from the top level.)                  matically when building from the top level, or when using
                   build.sh.
   
      -n         Display the commands that would have been executed, but do not       -n         Display the commands that would have been executed, but do not
                 actually execute them.  This will still cause recursion to                  actually execute them.  This will still cause recursion to
Line 452  BUILDING
Line 493  BUILDING
      Additional make(1) targets are usable specifically from the top source       Additional make(1) targets are usable specifically from the top source
      level to facilitate building the entire NetBSD source tree.       level to facilitate building the entire NetBSD source tree.
   
      build         Build the entire NetBSD system.  This orders portions of       build         Build the entire NetBSD system (except the kernel).  This
                    the source tree such that prerequisites will be built in                     orders portions of the source tree such that prerequisites
                    the proper order.                     will be built in the proper order.
   
      distribution  Do a ``make build'', and then install a full distribution       distribution  Do a ``make build'', and then install a full distribution
                    into DESTDIR, including files in DESTDIR/dev, DESTDIR/etc,                     (which does not include a kernel) into DESTDIR, including
                    DESTDIR/root and DESTDIR/var.                     files in DESTDIR/dev, DESTDIR/etc, DESTDIR/root and
                      DESTDIR/var.
   
      buildworld    As per ``make distribution'', except that it ensures that       buildworld    As per ``make distribution'', except that it ensures that
                    DESTDIR is not the root directory.                     DESTDIR is not the root directory.
   
      installworld  Install the distribution from DESTDIR to INSTALLWORLDDIR       installworld  Install the distribution from DESTDIR to INSTALLWORLDDIR,
                    (which defaults to the root directory).  Ensures that                     which defaults to the root directory.  Ensures that
                    INSTALLWORLDDIR is not the root directory if cross compil-                     INSTALLWORLDDIR is not the root directory if cross compil-
                    ing.                     ing.
   
                    Note: It is highly recommended that you upgrade your kernel                     The INSTALLSETS environment variable may be set to a list
                    and reboot before performing this operation.                     of distribution sets to be installed.  By default, all sets
                      except ``etc'' and ``xetc'' are installed, so most files in
                      INSTALLWORLDDIR/etc will not be installed or modified.
   
                      Note: Before performing this operation with
                      INSTALLWORLDDIR=/, it is highly recommended that you
                      upgrade your kernel and reboot.  After performing this
                      operation, it is recommended that you use etcupdate(8) to
                      update files in INSTALLWORLDDIR/etc and that you use
                      postinstall(8) to check for inconsistencies (and possibly
                      to fix them).
   
      sets          Create distribution sets from DESTDIR into       sets          Create distribution sets from DESTDIR into
                    RELEASEDIR/MACHINE/binary/sets.  Should be run after ``make                     RELEASEDIR/RELEASEMACHINEDIR/binary/sets.  Should be run
                    distribution'' (as ``make build'' does not install all of                     after ``make distribution'', as ``make build'' alone does
                    the required files).                     not install all of the required files.
   
      sourcesets    Create source sets of the source tree into       sourcesets    Create source sets of the source tree into
                    RELEASEDIR/source/sets.                     RELEASEDIR/source/sets.
   
      syspkgs       Create syspkgs from DESTDIR into       syspkgs       Create syspkgs from DESTDIR into
                    RELEASEDIR/MACHINE/binary/syspkgs.  Should be run after                     RELEASEDIR/RELEASEMACHINEDIR/binary/syspkgs.  Should be run
                    ``make distribution'' (as ``make build'' does not install                     after ``make distribution'', as ``make build'' alone does
                    all of the required files).                     not install all of the required files.
   
      release       Do a ``make distribution'', build kernels, distribution       release       Do a ``make distribution'', build kernels, distribution
                    media, and install sets (this as per ``make sets''), and                     media, and install sets (this as per ``make sets''), and
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                    described by release(7).  This requires that RELEASEDIR be                     described by release(7).  This requires that RELEASEDIR be
                    set (see above).                     set (see above).
   
        iso-image     Create a NetBSD installation CD-ROM image in the
                      RELEASEDIR/iso directory.  The CD-ROM file system will have
                      a layout as described in release(7).
   
                      For most machine types, the CD-ROM will be bootable, and
                      will automatically run the sysinst(8) menu-based installa-
                      tion program, which can be used to install or upgrade a
                      NetBSD system.  Bootable CD-ROMs also contain tools that
                      may be useful in repairing a damaged NetBSD installation.
   
                      Before ``make iso-image'' is attempted, RELEASEDIR must be
                      populated by ``make release'' or equivalent.
   
                      Note that other, smaller, CD-ROM images may be created in
                      the RELEASEDIR/RELEASEMACHINEDIR/installation/cdrom direc-
                      tory by ``make release''.  These smaller images usually
                      contain the same tools as the larger images in
                      RELEASEDIR/iso, but do not contain additional content such
                      as the distribution sets.
   
                      Note that the mac68k port still uses an older method of
                      creating CD-ROM images.  This requires the mkisofs(1) util-
                      ity, which is not part of NetBSD, but which can be
                      installed from pkgsrc/sysutils/cdrtools.
   
        iso-image-source
                      Create a NetBSD installation CD-ROM image in the
                      RELEASEDIR/iso directory.  The CD-ROM file system will have
                      a layout as described in release(7).  It will have top
                      level directories for the machine type and source.
   
                      For most machine types, the CD-ROM will be bootable, and
                      will automatically run the sysinst(8) menu-based installa-
                      tion program, which can be used to install or upgrade a
                      NetBSD system.  Bootable CD-ROMs also contain tools that
                      may be useful in repairing a damaged NetBSD installation.
   
                      Before ``make iso-image-source'' is attempted, RELEASEDIR
                      must be populated by ``make sourcesets release'' or equiva-
                      lent.
   
                      Note that other, smaller, CD-ROM images may be created in
                      the RELEASEDIR/RELEASEMACHINEDIR/installation/cdrom direc-
                      tory by ``make release''.  These smaller images usually
                      contain the same tools as the larger images in
                      RELEASEDIR/iso, but do not contain additional content such
                      as the distribution sets.
   
                      Note that the mac68k port still uses an older method of
                      creating CD-ROM images.  This requires the mkisofs(1) util-
                      ity, which is not part of NetBSD, but which can be
                      installed from pkgsrc/sysutils/cdrtools.
   
      regression-tests       regression-tests
                    Can only be run after building the regression tests in the                     Can only be run after building the regression tests in the
                    directory ``regress''.  Runs the compiled regression tests                     directory ``regress''.  Runs those compiled regression
                    on the local host.                     tests on the local host.  Note that most tests are now man-
                      aged instead using atf(7); this target should probably run
                      those as well but currently does not.
   
    The "build.sh" script     The "build.sh" script
      This script file is a Bourne shell script designed to build the entire       This script file is a Bourne shell script designed to build the entire
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      The following operations are supported by build.sh:       The following operations are supported by build.sh:
   
      build         Build the system as per ``make build''.  This option       build         Build the system as per ``make build''.  Before the main
                    implies the obj and tools operations.                     part of the build commences, this command runs the obj
                      operation (unless the -o option is given), ``make
                      cleandir'' (unless the -u option is given), and the tools
                      operation.
   
      distribution  Build a full distribution as per ``make distribution''.       distribution  Build a full distribution as per ``make distribution''.
                    This option implies the build operation.                     This command first runs the build operation.
   
      release       Build a full release as per ``make release''.  This option       release       Build a full release as per ``make release''.  This command
                    implies the distribution operation.                     first runs the distribution operation.
   
      makewrapper   Create the nbmake-MACHINE wrapper.  This operation is auto-       makewrapper   Create the nbmake-MACHINE wrapper.  This operation is auto-
                    matically performed for any of the other operations.                     matically performed for any of the other operations.
   
        cleandir      Perform ``make cleandir''.
   
      obj           Perform ``make obj''.       obj           Perform ``make obj''.
   
      tools         Build and install the host tools from src/tools.       tools         Build and install the host tools from src/tools.  This com-
                      mand will first run ``make obj'' and ``make cleandir'' in
                      the tools subdirectory unless the -o or -u options (respec-
                      tively) are given.
   
      install=idir  Install the contents of DESTDIR to idir, using ``make       install=idir  Install the contents of DESTDIR to idir, using ``make
                    installworld''.                     installworld''.  Note that files that are part of the
                      ``etc'' or ``xetc'' sets will not be installed.
   
      kernel=kconf  Build a new kernel.  The kconf argument is the name of a       kernel=kconf  Build a new kernel.  The kconf argument is the name of a
                    configuration file suitable for use by config(1).  If kconf                     configuration file suitable for use by config(1).  If kconf
Line 540  BUILDING
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                    is typically sys/arch/MACHINE/conf.  The new kernel will be                     is typically sys/arch/MACHINE/conf.  The new kernel will be
                    built in a subdirectory of KERNOBJDIR, which is typically                     built in a subdirectory of KERNOBJDIR, which is typically
                    sys/arch/MACHINE/compile or an associated object directory.                     sys/arch/MACHINE/compile or an associated object directory.
                    In order to ensure that the kernel is built using up-to-  
                    date tools, it is strongly recommended that the tools be                     This command does not imply the tools command; run the
                    rebuilt (using the tools operation).                     tools command first unless it is certain that the tools
                      already exist and are up to date.
   
                      This command will run ``make cleandir'' on the kernel in
                      question first unless the -u option is given.
   
      releasekernel=kconf       releasekernel=kconf
                    Install a gzip(1)ed copy of the kernel built by                     Install a gzip(1)ed copy of the kernel previously built by
                    kernel=kconf into RELEASEDIR/MACHINE/binary/kernel, usually                     kernel=kconf into
                    as netbsd-kconf.gz, although the ``netbsd'' prefix is                     RELEASEDIR/RELEASEMACHINEDIR/binary/kernel, usually as
                    determined from the ``config'' directives in kconf.                     netbsd-kconf.gz, although the ``netbsd'' prefix is deter-
                      mined from the ``config'' directives in kconf.
   
      sets          Perform ``make sets''.       sets          Perform ``make sets''.
   
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      syspkgs       Perform ``make syspkgs''.       syspkgs       Perform ``make syspkgs''.
   
        iso-image     Perform ``make iso-image''.
   
        iso-image-source
                      Perform ``make iso-image-source''.
   
      The following command line options alter the behaviour of the build.sh       The following command line options alter the behaviour of the build.sh
      operations described above:       operations described above:
   
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      -B buildid       -B buildid
                Set the value of BUILDID to buildid.  This will also append the                 Set the value of BUILDID to buildid.  This will also append the
                build idenfitier to the name of the ``make'' wrapper script so                 build identifier to the name of the ``make'' wrapper script so
                that the resulting name is of the form                 that the resulting name is of the form
                ``nbmake-MACHINE-BUILDID''.                 ``nbmake-MACHINE-BUILDID''.
   
      -D dest   Set the value of DESTDIR to dest.       -C cdextras
                  Set the value of CDEXTRA to cdextras which is a space-separated
                  list of files or directories which will be added in order to
                  the CD-ROM image when used in conjunction with ``iso-image'' or
                  ``iso-image-source''.  Files will be added to the root of the
                  CD-ROM image, whereas directories will be copied recursively.
                  If relative paths are specified, they will be converted to
                  absolute paths before being used.
   
        -D dest   Set the value of DESTDIR to dest.  If a relative path is speci-
                  fied, it will be converted to an absolute path before being
                  used.
   
      -E        Set `expert' mode.  This overrides various sanity checks, and       -E        Set `expert' mode.  This overrides various sanity checks, and
                allows: DESTDIR does not have to be set to a non-root path for                 allows: DESTDIR does not have to be set to a non-root path for
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      -h        Print a help message.       -h        Print a help message.
   
      -j njob   Passed through to make(1).  Makefiles should use .WAIT or have       -j njob   Run up to njob make(1) subjobs in parallel; passed through to
                explicit dependancies as necessary to enforce build ordering.                 make(1).  If you see failures for reasons other than running
                If you see build failures with -j, please save complete build                 out of memory while using build.sh with -j, please save com-
                logs so the failures can be analyzed.                 plete build logs so the failures can be analyzed.
   
      -M obj    Set MAKEOBJDIRPREFIX to obj.  Unsets MAKEOBJDIR.                 To achieve the fastest builds, -j values between (1 + the num-
                  ber of CPUs) and (2 * the number of CPUs) are recommended.  Use
      -m mach   Set the value of MACHINE to mach.  This will also override any                 lower values on machines with limited memory or I/O bandwidth.
                value of MACHINE_ARCH in the process environment with a value  
                deduced from mach, unless -a is specified, or mach is a special       -M obj    Set MAKEOBJDIRPREFIX to obj.  For instance, if the source
                case listed below.  All cross builds require -m, but if unset                 directory is /usr/src, a setting of ``-M /usr/obj'' will place
                on a NetBSD host, the host's value of MACHINE will be detected                 build-time files under /usr/obj/usr/src/bin,
                and used automatically.                 /usr/obj/usr/src/lib, /usr/obj/usr/src/usr.bin, and so forth.
                  If a relative path is specified, it will be converted to an
                Some machines support multiple values for MACHINE_ARCH.  For a                 absolute path before being used.  Unsets MAKEOBJDIR.  See ``-O
                given value of mach, the following MACHINE and MACHINE_ARCH                 -obj'' for more information.
                values will result:  
        -m mach   Set the value of MACHINE to mach, except in some special cases
                  listed below.  This will also override any value of
                  MACHINE_ARCH in the process environment with a value deduced
                  from mach, unless -a is specified.  All cross builds require
                  -m, but if unset on a NetBSD host, the host's value of MACHINE
                  will be detected and used automatically.
   
                  Some machines support multiple values for MACHINE_ARCH.  The
                  following special cases for the mach argument are defined to
                  set the listed values of MACHINE and MACHINE_ARCH:
   
                      mach          MACHINE    MACHINE_ARCH                       mach          MACHINE    MACHINE_ARCH
                        evbarm        evbarm     (not set)
                        evbarm-eb     evbarm     armeb
                        evbarm-el     evbarm     arm
                      evbmips       evbmips    (not set)                       evbmips       evbmips    (not set)
                      evbmips-eb    evbmips    mipseb                       evbmips-eb    evbmips    mipseb
                      evbmips-el    evbmips    mipsel                       evbmips-el    evbmips    mipsel
Line 618  BUILDING
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      -O obj    Create an appropriate transform macro for MAKEOBJDIR that will       -O obj    Create an appropriate transform macro for MAKEOBJDIR that will
                place the built object files under obj.  For instance, a set-                 place the built object files under obj.  For instance, a set-
                ting of /usr/obj will place build-time files under                 ting of ``-O /usr/obj'' will place build-time files under
                /usr/obj/bin, /usr/obj/lib, /usr/obj/usr.bin, and so forth.                 /usr/obj/bin, /usr/obj/lib, /usr/obj/usr.bin, and so forth.  If
                Unsets MAKEOBJDIRPREFIX.                 a relative path is specified, it will be converted to an abso-
                  lute path before being used.  Unsets MAKEOBJDIRPREFIX.
   
                  In normal use, exactly one of the -M or -O options should be
                  specified.  If the source directory is /usr/src and neither -M
                  nor -O is specified, then a default object directory will be
                  chosen according to rules in <bsd.obj.mk>; this default is usu-
                  ally either /usr/obj or /usr/obj.MACHINE.
   
      -o        Set the value of MKOBJDIRS to ``no''.  Otherwise, it will be       -o        Set the value of MKOBJDIRS to ``no''.  Otherwise, it will be
                automatically set to ``yes'' (which is opposite to the default                 automatically set to ``yes''.  This default is opposite to the
                behaviour).                 behaviour when not using build.sh.
   
      -R rel    Set the value of RELEASEDIR to rel.       -R rel    Set the value of RELEASEDIR to rel.  If a relative path is
                  specified, it will be converted to an absolute path before
                  being used.
   
      -r        Remove the contents of DESTDIR and TOOLDIR before building       -r        Remove the contents of DESTDIR and TOOLDIR before building
                (provides a clean starting point).  This will skip deleting                 (provides a clean starting point).  This will skip deleting
                DESTDIR if building on a native system to the root directory.                 DESTDIR if building on a native system to the root directory.
   
      -T tools  Set the value of TOOLDIR to tools.  If set, the bootstrap       -S seed   Change the value of BUILDSEED to seed.  This should rarely be
                ``make'' will only be rebuilt as needed (when the source files                 necessary.
                for make(1) change).  
        -T tools  Set the value of TOOLDIR to tools.  If a relative path is spec-
                  ified, it will be converted to an absolute path before being
                  used.  If set, the bootstrap ``make'' will only be rebuilt if
                  the source files for make(1) have changed.
   
      -U        Set MKUNPRIVED=yes.       -U        Set MKUNPRIVED=yes.
   
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                Create the nbmake wrapper script (see below) in a custom loca-                 Create the nbmake wrapper script (see below) in a custom loca-
                tion, specified by wrapper.  This allows, for instance, to                 tion, specified by wrapper.  This allows, for instance, to
                place the wrapper in PATH automatically.  Note that wrapper is                 place the wrapper in PATH automatically.  Note that wrapper is
                the full name of the file, not just a directory name.                 the full name of the file, not just a directory name.  If a
                  relative path is specified, it will be converted to an absolute
                  path before being used.
   
      -X x11src       -X x11src
                Set the value of X11SRCDIR to x11src.                 Set the value of X11SRCDIR to x11src.  If a relative path is
                  specified, it will be converted to an absolute path before
                  being used.
   
      -x        Set MKX11=yes.       -x        Set MKX11=yes.
   
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      nbmake-MACHINE can be invoked in lieu of make(1), and will instead call       nbmake-MACHINE can be invoked in lieu of make(1), and will instead call
      the up-to-date version of ``nbmake'' installed into TOOLDIR/bin with sev-       the up-to-date version of ``nbmake'' installed into TOOLDIR/bin with sev-
      eral key variables pre-set, including MACHINE, MACHINE_ARCH, and TOOLDIR.       eral key variables pre-set, including MACHINE, MACHINE_ARCH, and TOOLDIR.
      build.sh will also set variables specified with -V, and unset variables       nbmake-MACHINE will also set variables specified with -V, and unset vari-
      specified with -Z.       ables specified with -Z.
   
      This script can be symlinked into a directory listed in PATH, or called       This script can be symlinked into a directory listed in PATH, or called
      with an absolute path.       with an absolute path.
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           of the release build.            of the release build.
   
 OBSOLETE VARIABLES  OBSOLETE VARIABLES
      NBUILDJOBS  Use the make(1) option -j, instead.       NBUILDJOBS  Use the make(1) option -j instead.
   
      USE_NEW_TOOLCHAIN       USE_NEW_TOOLCHAIN
                  The new toolchain is now the default.  To disable, use                   The new toolchain is now the default.  To disable, use
                  TOOLCHAIN_MISSING=yes.                   TOOLCHAIN_MISSING=yes.
   
 SEE ALSO  SEE ALSO
      make(1), hier(7), release(7)       make(1), hier(7), release(7), etcupdate(8), postinstall(8), sysinst(8),
        pkgsrc/sysutils/cdrtools
   
 HISTORY  HISTORY
      The build.sh based build scheme was introduced for NetBSD 1.6 as       The build.sh based build scheme was introduced for NetBSD 1.6 as
      USE_NEW_TOOLCHAIN, and re-worked to TOOLCHAIN_MISSING after that.       USE_NEW_TOOLCHAIN, and re-worked to TOOLCHAIN_MISSING after that.
   
 BUGS  NetBSD                          August 18, 2008                         NetBSD
      A few platforms are not yet using this build system.  
   
 NetBSD                         February 6, 2003                         NetBSD  

Legend:
Removed from v.1.54  
changed lines
  Added in v.1.77

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