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Annotation of src/UPDATING, Revision 1.233

1.233   ! joerg       1: $NetBSD: UPDATING,v 1.232 2011/12/27 16:54:51 christos Exp $
1.1       abs         2:
1.123     jmc         3: This file (UPDATING) is intended to be a brief reference to recent
                      4: changes that might cause problems in the build process, and a guide for
                      5: what to do if something doesn't work.
1.1       abs         6:
1.123     jmc         7: For a more detailed description of the recommended way to build NetBSD
                      8: using build.sh, see the BUILDING file.
                      9:
                     10: Note that much of the advice in this UPDATING file was written before
                     11: build.sh existed.  Nevertheless, the advice here may be useful for
                     12: working around specific problems with build.sh.
                     13:
                     14: See also: BUILDING, build.sh, Makefile.
1.1       abs        15:
                     16: Recent changes:
                     17: ^^^^^^^^^^^^^^^
1.230     tls        18:
1.233   ! joerg      19: 20120207:
        !            20:        Default for MKCATPAGES changed to NO. Update builds with fail
        !            21:        unless DESTDIR is cleaned manually.
        !            22:
1.232     christos   23: 20111227:
                     24:        If you built between 20111225 and 20111227 you need to remove
                     25:        /usr/lib/libpam.so.4* and /usr/lib/security/*.so.4, since the
                     26:        bump has been reverted.
                     27:
1.231     tls        28: 20111125:
                     29:        The "rnd" pseudodevice has been added to sys/conf/std, which
                     30:        means it should no longer be explicitly listed in kernel
                     31:        configuration files.  The line "pseudo-device rnd" should be
                     32:        removed from any custom kernel config files users may have.
                     33:
1.230     tls        34: 20111119:
                     35:        A problem with the datastructures used by the rndctl(8)
                     36:        utility (pointers in datastructures in an array, making 32->64
                     37:        bit compatibility very painful) has been fixed in a
                     38:        non-backwards-compatible way.  If you replace your kernel,
                     39:        replace your rndctl executable too.
                     40:
1.229     jym        41: 20111001:
                     42:        the prop_*_send_syscall() functions from proplib(3) have been
                     43:        changed and their new version is not backward compatible with the old
                     44:        one. So ensure that all consumers of these functions (currently:
                     45:        quota2 code and its tests) are updated together with the new lib.
                     46:
1.228     mrg        47: 20110817:
                     48:        sparc has been changed to use GCC 4.5.3, so any objdir or
                     49:        DESTDIR for them should be deleted before updating.
                     50:
1.227     riastrad   51: 20110806:
                     52:        i386 and amd64 have been changed to use GCC 4.5.3, so any
                     53:        objdir or DESTDIR for them should be deleted before updating.
                     54:
1.226     mrg        55: 20110805:
                     56:        The update to GCC 4.5.3 requires a non-trivial portion of
                     57:        the tree to be cleaned.  Best to delete both objdir and
                     58:        DESTDIR before running this update.  So far, only the
                     59:        sparc64, mips and powerpc platforms have changed.
                     60:
1.225     matt       61: 20110803:
                     62:        The layout of external/public-domain/xz has changed. To do an
                     63:        update build you will have to remove the contents of the OBJDIR
                     64:        for external/public-domain/xz/bin by hand as the xz entry there
                     65:        is now a directory.
                     66:
1.223     joerg      67: 20110410:
1.224     dholland   68:        The configuration of src/tools/gcc has changed. To do an
                     69:        update build you have to clean both tools/binutils and
                     70:        tools/gcc by hand.
1.223     joerg      71:
1.222     plunky     72: 20110328:
                     73:        Building the Xorg binary was moved into a subdirectory to fix
                     74:        ordering issues with "make all". It may be necessary to remove
                     75:        the OBJDIR for external/mit/xorg/server/xorg-server/hw/xfree86
                     76:        if your update build fails, as the "Xorg" entry there is now a
                     77:        directory.
                     78:
1.220     joerg      79: 20110121:
1.221     lukem      80:        Assembler files no longer use -traditional-cpp.  This can break
1.220     joerg      81:        the build of individual parts of the tree.  This is handled
                     82:        correctly by build.sh.  Manual builds have to update /usr/share/mk
                     83:        and re-run config(1) for any kernel configurations as needed.
1.218     joerg      84:
1.217     jruoho     85: 20101217:
                     86:        The tcpdump(8) program was changed to drop privileges and chroot(2)
                     87:        by default. It may be necessary to manually update passwd(5) and
                     88:        group(5) in order to make the program work with existing setups.
                     89:
1.216     christos   90: 20101125:
                     91:        The latest changes to setenv(3) dissallow setting environment
                     92:        variables with names that contain '='. Revision 1.18 of env.c
                     93:        assumed that this was allowed. Installing a new libc with an
                     94:        old copy of /usr/bin/env causes env x=1 printenv | grep x= to
                     95:        break which affects the autoconf tests for dependency finding,
                     96:        so building gcc will end up printing:
                     97:            checking dependency style of gcc... none
                     98:            configure: error: no usable dependency style found
                     99:        Fix it by rebuilding and re-installing env.
1.138     lukem     100:
1.215     mrg       101: 20101119:
                    102:        Recent Xorg updates in xsrc/external/mit/ may cause various build
                    103:        or run-time problems.  Delete your entire DESTDIR and OBJDIR if you
                    104:        have any build problems with xsrc, or problems with mismatched
                    105:        versions between xorg-server and drivers.
                    106:
1.213     jmmv      107: 20100604:
                    108:        The update of ATF to 0.9 causes old tests written in shell to fail
                    109:        unless they are rebuilt.  If you are building with MKUPDATE=yes,
                    110:        you need to clean the src/external/bsd/atf/tests/ and the src/tests/
                    111:        trees by hand.
                    112:
1.211     tnozaki   113: 20100522:
1.212     mrg       114:        Recent Xorg updates in xsrc/external/mit/ will cause various build
                    115:        problems.  Delete your entire DESTDIR and OBJDIR if you have any
                    116:        build problems with xsrc.
                    117:
                    118: 20100522:
1.211     tnozaki   119:        private section of <ctype.h> was splitted, and now mklocale(1)
1.214     dholland  120:        include ctype_local.h, so you have to make cleandir in tools/mklocale.
1.211     tnozaki   121:
1.210     christos  122: 20100520:
                    123:        The location of the xkb compiled descriptions has changed. Please
                    124:        remove usr/X11R7/lib/X11/xkb/compiled from your $DESTDIR.
                    125:
1.209     njoly     126: 20100222:
                    127:        The shared objects file extension has been changed from .so to
                    128:        .pico, in order to avoid conflicts with shared libraries names
                    129:        libXX.so.  All now stale regular .so files can be removed from
                    130:        your object directories.
                    131:
1.208     roy       132: 20100204:
                    133:        The termcap database has been removed from the sources,
                    134:        but has not been marked obsolete so it is not removed
                    135:        from the system when upgrading.
                    136:        As such, you will need to remove them from your object
                    137:        and destination directories.
                    138:
1.203     dyoung    139: 20091101:
1.205     dholland  140:         After updating, it may be necessary to make the 'cleandir'
                    141:         target in src/tools/yacc/ and in src/usr.bin/yacc/ before a
                    142:         'build.sh -u tools' or 'build.sh -u distribution'.  Ditto
                    143:         src/tools/lex/ and src/usr.bin/lex/.
1.203     dyoung    144:
1.202     mrg       145: 20091001:
1.206     dholland  146:        On amd64 you must rebuild tools (to get the new binutils)
                    147:        before building a kernel, or the build fails on cpufunc.S.
                    148:
                    149: 20091001:
1.202     mrg       150:        An error will create a ./usr/X11R7/lib/X11/xkb/compiled/xkb
                    151:        symlink, failing the build.  Delete the link, and the subdir
                    152:        it is in, and retry your build.
                    153:
1.201     dsl       154: 20090718:
                    155:        libc build changed so that strchr() provides the extra entry
                    156:        point for index(). Update build of libc.a (and libc_pic.a)
                    157:        may fail because the archive contains the unwanted index.o.
                    158:        (Similarly for strrchr() and rindex().)
                    159:
1.198     mrg       160: 20090709:
                    161:        Native Xorg was upgraded again.  Builds will probably fail again
                    162:        without a clean objdir, at least for src/external/mit/xorg.
                    163:
1.197     mrg       164: 20090616:
                    165:        Native Xorg was upgraded.  Builds will need a clean objdir for
                    166:        src/external/mit/xorg.  Upgrading a system from sets will not
                    167:        work properly yet as the /usr/X11R7/lib/X11/xkb/symbols/pc
                    168:        subdirectory has been changed into a file, and this needs to
                    169:        be manually "rm -r"'ed before installing xbase.tgz.
                    170:
1.195     perry     171: 20090501:
                    172:        Several new functions were added to string.h/libc, and this
                    173:        can cause autoconf problems during the tool build for people
                    174:        who fail to clean out their tools objects properly. If you
                    175:        note messages about stpcpy, stpncpy or strnlen accompanying a
                    176:        failure during the tool build, clean out all your tools
                    177:        objects and start again.
                    178:
1.194     mrg       179: 20090325:
                    180:        The i386 port was switched to i486 default toolchain.  This requires
                    181:        cleaning your src/tools directory and $TOOLDIR and rebuilding them.
                    182:
1.192     skrll     183: 20090126:
1.207     mbalmer   184:        The __posix_fadvise50 system call changed assembly stub type. You
                    185:        need to 'rm -f __posix_fadvise50.*' in the libc build directory
                    186:        to avoid using the old assembly stub.
1.192     skrll     187:
1.191     joerg     188: 20090202:
                    189:        pkg_install now depends on the pkgdb cache for automatic conflict
                    190:        detection.  It is recommented to rebuild the cache with
                    191:        ``pkg_admin rebuild''.
                    192:
1.184     christos  193: 20090110:
                    194:        time_t and dev_t have been bumped to 64 bit quantities. To upgrade:
                    195:        1. Make sure your kernel has COMPAT_50 in it. Build and install.
1.188     christos  196:           This is needed even in the MODULAR kernel because there is
                    197:           conditionally compiled code in rtsock.c.
1.184     christos  198:        2. make sure build.sh completes and the binaries in a chroot work
                    199:           before installing.
                    200:        3. If you don't use build.sh and you build directly to root, and
1.187     dholland  201:           your build breaks in the middle, don't despair. Make sure headers
1.184     christos  202:           are installed properly, and start building libraries first libc
                    203:           and libutil, install them and then continue building all the
                    204:           libraries in src/lib and src/gnu/lib and install them. Once
                    205:           the new libraries are installed, you can restart the build.
                    206:        4. If you compile packages and you notice link time warnings,
1.189     hubertf   207:           rebuild the required packages to update their shared libraries.
                    208:           Any package you rebuild will require rebuilding all the packages
                    209:           that depend on it.
1.186     christos  210:        5. Next time you run pwd_mkdb with the new binary, the file
                    211:           will be upgraded and it will not be backwards compatible.
1.190     apb       212:        6. The utmpx/wtmpx files (/var/run/utmpx and /var/log/wtmpx, see
                    213:           lastlogx(5)) have been versioned, and there is a heuristic
                    214:           for utmp. You are better off removing the old files after
                    215:           upgrading.  The automated clearing of /var/run during
                    216:           boot, and the automated rotating of files in /var/log by
                    217:           newsyslog(8), may mean that you do not have to remove the
                    218:           files manually.
                    219:        7. The optional accounting file (/var/account/acct, see
                    220:           accton(8)) has not been versioned, and will need to be
                    221:           removed.  The automatic rotation of the accounting file by
                    222:           /etc/daily limits the bad consequences of failure to remove
                    223:           the file.
1.196     dholland  224:        8. Application software that writes time_t to binary files on
                    225:           disk will break or need attention. Most notably: if you are
                    226:           using PostgreSQL < 8.4, you need to dump your databases,
                    227:           rebuild PostgreSQL with the new time_t, then restore.
1.185     jmcneill  228:
1.183     pgoyette  229: 20081219:
                    230:        config(1) has been updated, and one of the files it creates -
                    231:        swapnetbsd.o - has changed format.  You need to rebuild config
                    232:        (done automatically by build.sh) and then you need to rerun
                    233:        config on all kernel configuration files before rebuilding those
                    234:        kernels.
                    235:
1.181     cube      236: 20081205:
                    237:        If you build with MKX11=no, you should remove /etc/rc.d/xdm and
                    238:        /etc/rc.d/xfs from DESTDIR because those files were moved to the xetc
                    239:        set and will appear as extra files for MKX11=no update builds.
1.178     lukem     240:
1.179     tsutsui   241: 20081122:
1.182     tsutsui   242:        On i386, various kernel options(4) in GENERIC including
1.180     wiz       243:        file systems have been disabled and moved into kernel modules.
                    244:        Before trying a new GENERIC kernel, you have to prepare the
1.179     tsutsui   245:        following files as well as a new GENERIC kernel:
                    246:
                    247:        - build and install kernel modules from src/sys/modules
                    248:
                    249:        - install the latest bootloader, which will load a module
1.180     wiz       250:          for the file system from which the kernel is loaded automatically
1.179     tsutsui   251:
1.180     wiz       252:        If you have to load your kernel from a file system which is not of
                    253:        the same type as the root file system, you have to load the necessary
                    254:        file system module manually on the boot prompt or in the boot.cfg file.
1.179     tsutsui   255:
1.178     lukem     256: 20080827:
                    257:        If you built and installed a libc from sources between
                    258:        2008/08/20 and 2008/08/26 you got a broken strtouq(3)
                    259:        which results in false errors reported by lint(1).
                    260:        Since this breaks the libc build itself, manual help is
1.180     wiz       261:        needed -- lint must be disabled temporarily, e.g.:
1.178     lukem     262:          $ (cd lib/libc && make MKLINT=no dependall install)
                    263:
1.177     christos  264: 20080813:
                    265:        MKDEBUG build was broken because the .depend files did not know
                    266:        about .go files. You need to remove all .depend files and rebuild.
                    267:
1.200     dholland  268: 20080802:
                    269:        A regression in binary compatibility for pthread_mutex_t has
                    270:        been fixed. Unfortunately, the price is breaking compatibility
                    271:        for -current.
                    272:
                    273:        Threaded programs (using libpthread) and C++ programs (using
                    274:        libstdc++) compiled after 20070907 and before 20080802 need to
                    275:        be recompiled.
                    276:
                    277:        One way to find affected pkgsrc packages:
                    278:
                    279:          $ grep REQUIRES=/usr/lib/libpthread /var/db/pkg/*/+BUILD_INFO
                    280:          $ grep REQUIRES=/usr/lib/libstdc++ /var/db/pkg/*/+BUILD_INFO
                    281:
1.175     simonb    282: 20080731:
                    283:        WAPBL (metadata journaling support) has been added, but at this
                    284:        time isn't backwards compatible with pre-WAPBL aware kernels
                    285:        and userland (fsck_ffs in particular).  Please make sure you
                    286:        don't use a journaled filesystem with an older kernel/userland,
1.176     simonb    287:        especially an uncleanly mounted journaled filesystem.  WAPBL
                    288:        also requires the super block to be in the UFS2 format.  You
                    289:        can use fsck_ffs -c 4 to update the superblock format.
1.175     simonb    290:
1.174     lukem     291: 20080721:
                    292:        Assembler warnings are now fatal if $WARNS>0 and $NOGCCERROR
                    293:        isn't defined.
                    294:
1.173     freza     295: 20080531:
                    296:        The ioctl number of DRVSUSPENDDEV command on /dev/drvctl changed
                    297:        from 125 (conflicted with DRVCTLCOMMAND) to 129. The drvctl(8)
                    298:        utility needs to be rebuilt and reinstalled as older binaries
                    299:        won't work correctly. The following sequence of commands:
                    300:
                    301:          $ (cd sys/sys/ && nbmake-$arch includes)
                    302:          $ (cd sbin/drvctl/ && nbmake-$arch clean)
                    303:          $ (cd sbin/drvctl/ && nbmake-$arch all)
                    304:
                    305:        leaves new drvctl utility in sbin/drvctl build directory.
                    306:
1.172     lukem     307: 20080503:
                    308:        The <bsd.lib.mk> variable MKPRIVATELIB was renamed to LIBISPRIVATE.
                    309:
1.171     he        310: 20080521:
                    311:        For a while, unprivileged UPDATE builds would fail to
                    312:        succeed at the checkflist stage, complaining that
                    313:        ${DESTDIR}/stand/<arch>/ did not exist.  A fix for this
                    314:        problem was committed to share/mk/bsd.kmodule.mk, revision 1.9.
                    315:        If you already hit this problem, update the .mk file,
                    316:        remove ${DESTDIR}/stand/<arch>, and re-run the build.
                    317:
1.174     lukem     318: 20080303:
                    319:        Linker warnings are now fatal if $WARNS>0.
                    320:
1.170     christos  321: 20080126:
                    322:        The posix_fadvise system call has been changed from an assembly
                    323:        stub, to a c file that calls an assembly stub. You need to
                    324:        'rm -f posix_fadvise.* .depend' in the libc build directory to
                    325:        avoid using the old assembly stub.
                    326:
1.168     joerg     327: 20071209:
                    328:        The acpiec(4) driver has been split into two attachments. If you
                    329:        get ACPI errors before the attachment, please update your kernel
1.169     wiz       330:        configuration file appropriately or see GENERIC for more details.
1.168     joerg     331:
1.166     xtraeme   332: 20071115:
                    333:        The it(4) driver has been renamed to itesio(4) and the old port
                    334:        argument specified in the kernel configuration file is not valid
                    335:        anymore. The itesio(4) driver now uses the Super I/O address port
                    336:        rather than the EC address port. Please update your kernel
1.167     wiz       337:        configuration file appropriately or see GENERIC for more details.
1.166     xtraeme   338:
1.165     jmmv      339: 20071028:
                    340:        The pccons(4) driver has been removed from the NetBSD/shark port.
                    341:        You need to update any custom kernel configuration file you have
                    342:        to remove any references to pccons (which includes removing the
                    343:        now useless XSERVER option) and replace them with the correct
                    344:        entries for the wscons driver.  See the GENERIC configuration file
                    345:        for more details.
                    346:
1.164     gdt       347: 20070913:
                    348:        A latent bug in dhclient/dhcpd that caused it to be unable to
                    349:        enumerate interfaces was fixed.  The bug began to cause
                    350:        problems after 20070911 when the kernel's SIOCGIFCONF
                    351:        implementation was repaired.  From 20070529 to 20070911 racoon
                    352:        could not enumerate interfaces.  (These are noted because
                    353:        normal kernel/userspace version matching hygiene is not
                    354:        sufficient to avoid this problem.)  Ensure that both kernel
                    355:        and userland are from after 20070913.
                    356:
1.163     joerg     357: 20070703:
1.199     dholland  358:        nbinstall has been renamed ${MACHINE_GNU_ARCH}-install. It
                    359:        calls the target-specific strip program, and the logic to pass
                    360:        down STRIP from make has been removed.  This requires a
                    361:        re-installation of tools.
1.163     joerg     362:
1.161     dsl       363: 20070422:
                    364:        The way OS emulations lookup filenames inside the emulation root
                    365:        has been changed.  Rather than modify the pathname (and copy back
                    366:        to userspace) namei() and lookup() directly check the emulation
                    367:        root. One side effect is that absolute symlinks inside the emulated
1.167     wiz       368:        root file system will be relative to that file system - unless they
1.161     dsl       369:        start /../ this is useful when the emulated root is a real install
                    370:        that has such links.
                    371:        This might affect symlinks that have been added to reference outside
                    372:        the emulated root.
                    373:
1.160     jmcneill  374: 20070412:
                    375:        The pckbc driver on sgimips IP32 has been removed. Use macekbc
                    376:        instead. See the GENERIC32_IP3x kernel configuration for an
                    377:        example.
                    378:
1.159     gdt       379: 20070319:
                    380:         src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so
                    381:         on many platforms due to incorrect flags settings.  If you
                    382:         updated and built after about 20070315, do "nbmake-$arch
                    383:        cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a
                    384:        rebuild of object files that might have been built
                    385:        incorrectly, and ensure that you have at least
                    386:        src/lib/libc/Makefile 1.130.
                    387:
1.158     dbj       388: 20070210:
                    389:         src/sys/sys/{sa.h,savar.h} were removed.
                    390:           find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \
                    391:               | xargs egrep -l '/sa.h|/savar.h' | xargs rm
                    392:         will allow dependencies on those files to get get rebuilt
                    393:
1.157     apb       394: 20070209:
                    395:         The threading model was changed when the newlock2 branch
                    396:         was merged to NetBSD-current.  If you boot with a new
                    397:         kernel (version 4.99.10), then you also need a new pthread
                    398:         library (/usr/lib/libpthread.so.0.7).  If you boot with
                    399:         an old kernel, then you need the old pthread library
                    400:         (/usr/lib/libpthread.so.0.6).  Provided you keep the kernel and
                    401:         the pthread library in sync, old threaded applications should
                    402:         continue to work with an old or new kernel.  Note that named(8)
                    403:        is the only threaded application in the base system.
                    404:
1.154     he        405: 20061214:
                    406:        Following the move of string_to_flags() and flags_to_string()
                    407:        from the bin/ls/ sources to libutil, users doing UPDATE builds
                    408:        will need to do a "make cleandir" in
                    409:                tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/,
                    410:                bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/,
1.156     he        411:                usr.bin/xinstall/, libexec/ftpd/, rescue/, as well
                    412:                as the installation images in distrib/
1.154     he        413:        in order to excise stale references to the old stat_flags.h header
                    414:        file in the ls sources -- stat_flags.h has been removed.
                    415:
1.152     christos  416: 20061108:
                    417:        The configure script used in the src/tools/gcc compiler has been
                    418:        changed to indicate that our libc has ssp support built-in and
                    419:        does not depend on -lssp and -lssp-nonshared. You'll need to
                    420:        make clean in src/tools/gcc first to rebuild the compiler.
                    421:
1.151     rpaulo    422: 20061009:
                    423:        The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer
                    424:        available. Use net.inet{,6}.tcp{,6}.congctl.selected instead.
                    425:
1.150     bjh21     426: 20060814:
                    427:        The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been
                    428:        withdrawn.  Use vidcvideo and pckbd instead.  See the GENERIC
                    429:        kernel configuration for an example.  X servers from the last
                    430:        few years should cope.
                    431:
1.149     christos  432: 20060703:
                    433:        MPACPI is no more. We always configure PCI interrupts using ACPI
                    434:        if we have an ACPI kernel. The option MPACPI_SCANPCI has been renamed
                    435:        to ACPI_SCANPCI. Thanks to work from fvdl.
                    436:
1.148     dogcow    437: 20060627:
                    438:        socket(2) has changed, and its system call has been versioned.
                    439:        For userlands with the old version of socket(2), make sure that
                    440:        your kernel has 'options COMPAT_30' set, or else 'bad system call'
                    441:        errors will result.
                    442:
1.1       abs       443: Hints for a more successful build:
                    444: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1.123     jmc       445:     Use build.sh, but do not use its "expert mode":
1.132     jmmv      446:        This will automatically build the tools in the
1.123     jmc       447:           correct order, and it will keep the tools and the
                    448:           new build products from interfering with the running
                    449:           system.  This will allow you to ignore most of the
                    450:           other advice in this file.
1.2       mrg       451:     Build a new kernel first:
                    452:        This makes sure that any new system calls or features
                    453:           expected by the new userland will be present.  This
                    454:           helps to avoid critical errors when upgrading.
1.1       abs       455:     Use object directories:
                    456:        This helps to keep stale object
                    457:           files from polluting the build if a Makefile "forgets"
                    458:           about one.  It also makes it easier to clean up after
                    459:           a build.  It's also necessary if you want to use the
                    460:           same source tree for multiple machines.
1.123     jmc       461:           To use object directories with build.sh:
                    462:            a) invoke build.sh with the "-M" or "-O" options.
                    463:           To use object directories without using build.sh:
1.1       abs       464:            a) cd /usr/src ; make cleandir
1.2       mrg       465:            b) Add "OBJMACHINE=yes" to /etc/mk.conf
                    466:            c) Add "MKOBJDIRS=yes" to /etc/mk.conf
1.1       abs       467:            d) cd /usr/src ; make build
1.2       mrg       468:           Note that running "make obj" in a directory will create
                    469:           in obj.$MACHINE directory.
1.1       abs       470:     Build to a DESTDIR:
1.123     jmc       471:        This helps to keep old installed files (especially libraries)
                    472:           from interfering with the new build.
                    473:           To build to a DESTDIR with build.sh, use the "-D" option.
                    474:           To build to a DESTDIR without using build.sh, set the DESTDIR
                    475:           environment variable before running make build.  It should be
                    476:           set to the pathname of an initially empty directory.
                    477:           Problems: if you do not use build.sh, you might need to
                    478:                update critical utilities without using DESTDIR since
                    479:                nothing is executed from what is installed in DESTDIR.
                    480:                (See critical utils, below.)
1.1       abs       481:     Build often:
                    482:        This keeps critical utilities current enough to not choke
                    483:        on any other part of the source tree that depends on up to
1.123     jmc       484:        date functionality.  If you use build.sh, you should not have
                    485:        this problem.
1.1       abs       486:
                    487: What to do if things don't work:
                    488: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
1.230     tls       489: When things don't work there are usually a few things that commonly
1.1       abs       490: should be done.
                    491:     1) make includes
                    492:        This should be done automatically by make build.
                    493:     2)  cd share/mk && make install
                    494:        Again, automatically done by make build.
                    495:
                    496: Failsafe rebuild of a small part of the tree:
                    497: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                    498: To make sure you rebuild something correctly you want to do
                    499: something like the following:
                    500:     1)  Make sure the includes and .mk files are up to date.
                    501:     2)  Make sure any program used to build the particular
                    502:        utility is up to date.  (yacc, lex, etc...)
                    503:     3)  cd ...path/to/util...
                    504:        make cleandir
                    505:        rm ...all obj directories...
                    506:        make cleandir                   # yes, again
                    507:        make obj
                    508:        make depend && make
                    509:
                    510: Failsafe rebuild of the entire tree:
                    511: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                    512: If you really want to make sure the source tree is clean and
1.2       mrg       513: ready for a build try the following.  Note that sourcing /etc/mk.conf
                    514: (a make(1) Makefile) in this manner is not right, and will not work
                    515: for anyone who uses any make(1) features in /etc/mk.conf.
1.1       abs       516:
                    517: ---cut here---
                    518: #!/bin/sh
                    519: . /etc/mk.conf
                    520:
1.58      lukem     521: if [ -z $NETBSDSRCDIR ] ; then
                    522:     NETBSDSRCDIR=/usr/src
1.1       abs       523: fi
1.58      lukem     524: if [ \! -d $NETBSDSRCDIR ] ; then
1.1       abs       525:     echo Unable to find sources
                    526:     exit 1
                    527: fi
1.58      lukem     528: find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \;
1.1       abs       529:
                    530: if [ -z $BSDOBJDIR ] ; then
                    531:     BSDOBJDIR=/usr/obj
                    532: fi
                    533: if [ -d $BSDOBJDIR ] ; then
                    534:     rm -rf $BSDOBJDIR
                    535: fi
                    536:
1.58      lukem     537: cd $NETBSDSRCDIR && make cleandir
1.1       abs       538:
                    539: ---cut here---
                    540:
                    541: Critical utilities:
                    542: ^^^^^^^^^^^^^^^^^^^
1.3       itojun    543:        usr.bin/compile_et
1.1       abs       544:        usr.bin/make
                    545:        usr.bin/yacc
                    546:        usr.bin/lex
1.11      lukem     547:        usr.bin/xlint
1.142     drochner  548:        usr.bin/config
1.1       abs       549:
1.34      simonb    550: Other problems and possible solutions:
1.1       abs       551: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                    552: Symptom:Complaints involving a Makefile.
1.17      erh       553: Fix:   Rebuild usr.bin/make:
                    554:        cd usr.bin/make && make && make install
1.111     simonb    555:        Or, a failsafe method if that doesn't work:
1.17      erh       556:        cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin
                    557:
1.1       abs       558: Fix:   Make sure .mk files are up to date.
                    559:        cd share/mk && make install
1.2       mrg       560:
                    561: Symptom:Kernel `config' fails to configure any kernel, including GENERIC.
1.142     drochner  562: Fix:   Rebuild usr.bin/config
1.1       abs       563:
                    564: Symptom:
                    565: Fix:   Rebuild usr.bin/yacc
                    566:
                    567: Symptom:
                    568: Fix:   Rebuild usr.bin/lex
                    569:
                    570: Symptom:
                    571: Fix:   rm /usr/lib/libbfd.a
1.4       itojun    572:
                    573: Symptom:Obsolete intermediate files are used during compilation
                    574: Fix:   Try the following sequence of commands in the directory in question.
                    575:        make cleandir; rm `make print-objdir`; make cleandir; make obj
                    576:        (If you built the tree without "make obj" in the past, obsolete files
                    577:        may remain.  The command tries to clean everything up)
1.5       wiz       578:
1.207     mbalmer   579: Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible
                    580:        pointer type
1.5       wiz       581: Fix:   Rebuild and install usr.bin/menuc
1.12      itojun    582:
                    583: Symptom:mklocale not found during build in share/locale/ctype
                    584: Fix:   Build and install usr.bin/mklocale
1.13      dogcow    585:
1.86      kleink    586: Symptom:undefined reference to `__assert13' or `__unsetenv13'
1.13      dogcow    587: Fix:    Rebuild and install lib/libc
                    588:
1.142     drochner  589: Symptom:usr.bin/config fails to build.
1.19      cgd       590: Fix:   Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile.
1.13      dogcow    591:
1.19      cgd       592: Symptom:undefined reference to `getprogname' or `setprogname'
                    593: Fix:    Rebuild and install lib/libc
1.24      abs       594:
                    595: Symptom:lint does not understand the '-X' option
                    596: Fix:    May need to build & install libs with NOLINT=1 before rebuilding lint
1.223     joerg     597:
                    598: Symptom:Update build fails in src/tools/gcc complaining that a variable
                    599:        (e.g. CPPFLAGS) has changed since the previous run.
                    600: Fix:    Run "nbmake-${ARCH} clean" in src/tools/gcc or do a clean build.

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