$NetBSD: UPDATING,v 1.163.4.1 2007/11/06 23:07:11 matt Exp $ This file (UPDATING) is intended to be a brief reference to recent changes that might cause problems in the build process, and a guide for what to do if something doesn't work. For a more detailed description of the recommended way to build NetBSD using build.sh, see the BUILDING file. Note that much of the advice in this UPDATING file was written before build.sh existed. Nevertheless, the advice here may be useful for working around specific problems with build.sh. See also: BUILDING, build.sh, Makefile. Recent changes: ^^^^^^^^^^^^^^^ 20071028: The pccons(4) driver has been removed from the NetBSD/shark port. You need to update any custom kernel configuration file you have to remove any references to pccons (which includes removing the now useless XSERVER option) and replace them with the correct entries for the wscons driver. See the GENERIC configuration file for more details. 20070913: A latent bug in dhclient/dhcpd that caused it to be unable to enumerate interfaces was fixed. The bug began to cause problems after 20070911 when the kernel's SIOCGIFCONF implementation was repaired. From 20070529 to 20070911 racoon could not enumerate interfaces. (These are noted because normal kernel/userspace version matching hygiene is not sufficient to avoid this problem.) Ensure that both kernel and userland are from after 20070913. 20070703: nbinstall has been renamed as it calls the target specific and the logic to pass down STRIP from mk been removed. This forces a re-installation of tools. 20070422: The way OS emulations lookup filenames inside the emulation root has been changed. Rather than modify the pathname (and copy back to userspace) namei() and lookup() directly check the emulation root. One side effect is that absolute symlinks inside the emulated root filesytem will be relative to that filesystem - unless they start /../ this is useful when the emulated root is a real install that has such links. This might affect symlinks that have been added to reference outside the emulated root. 20070412: The pckbc driver on sgimips IP32 has been removed. Use macekbc instead. See the GENERIC32_IP3x kernel configuration for an example. 20070319: src/lib/libc/Makefile revision 1.129 broke libc and ld.elf_so on many platforms due to incorrect flags settings. If you updated and built after about 20070315, do "nbmake-$arch cleandir" in src/lib/libc and src/libexec/ld.elf_so to force a rebuild of object files that might have been built incorrectly, and ensure that you have at least src/lib/libc/Makefile 1.130. 20070210: src/sys/sys/{sa.h,savar.h} were removed. find ${OBJDIR} \( -name .depend -o -name '*.d' \) -print \ | xargs egrep -l '/sa.h|/savar.h' | xargs rm will allow dependencies on those files to get get rebuilt 20070209: The threading model was changed when the newlock2 branch was merged to NetBSD-current. If you boot with a new kernel (version 4.99.10), then you also need a new pthread library (/usr/lib/libpthread.so.0.7). If you boot with an old kernel, then you need the old pthread library (/usr/lib/libpthread.so.0.6). Provided you keep the kernel and the pthread library in sync, old threaded applications should continue to work with an old or new kernel. Note that named(8) is the only threaded application in the base system. 20061214: Following the move of string_to_flags() and flags_to_string() from the bin/ls/ sources to libutil, users doing UPDATE builds will need to do a "make cleandir" in tools/mtree/, tools/makefs/, tools/binstall/, tools/pax/, bin/pax/, bin/ls/, usr.sbin/mtree/, usr.sbin/makefs/, usr.bin/xinstall/, libexec/ftpd/, rescue/, as well as the installation images in distrib/ in order to excise stale references to the old stat_flags.h header file in the ls sources -- stat_flags.h has been removed. 20061108: The configure script used in the src/tools/gcc compiler has been changed to indicate that our libc has ssp support built-in and does not depend on -lssp and -lssp-nonshared. You'll need to make clean in src/tools/gcc first to rebuild the compiler. 20061009: The sysctl variables net.inet{,6}.tcp{,6}.newreno are no longer available. Use net.inet{,6}.tcp{,6}.congctl.selected instead. 20060814: The vt, vidcconsole, kbd, and rpckbd drivers on acorn32 have been withdrawn. Use vidcvideo and pckbd instead. See the GENERIC kernel configuration for an example. X servers from the last few years should cope. 20060703: MPACPI is no more. We always configure PCI interrupts using ACPI if we have an ACPI kernel. The option MPACPI_SCANPCI has been renamed to ACPI_SCANPCI. Thanks to work from fvdl. 20060627: socket(2) has changed, and its system call has been versioned. For userlands with the old version of socket(2), make sure that your kernel has 'options COMPAT_30' set, or else 'bad system call' errors will result. Hints for a more successful build: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Use build.sh, but do not use its "expert mode": This will automatically build the tools in the correct order, and it will keep the tools and the new build products from interfering with the running system. This will allow you to ignore most of the other advice in this file. Build a new kernel first: This makes sure that any new system calls or features expected by the new userland will be present. This helps to avoid critical errors when upgrading. Use object directories: This helps to keep stale object files from polluting the build if a Makefile "forgets" about one. It also makes it easier to clean up after a build. It's also necessary if you want to use the same source tree for multiple machines. To use object directories with build.sh: a) invoke build.sh with the "-M" or "-O" options. To use object directories without using build.sh: a) cd /usr/src ; make cleandir b) Add "OBJMACHINE=yes" to /etc/mk.conf c) Add "MKOBJDIRS=yes" to /etc/mk.conf d) cd /usr/src ; make build Note that running "make obj" in a directory will create in obj.$MACHINE directory. Build to a DESTDIR: This helps to keep old installed files (especially libraries) from interfering with the new build. To build to a DESTDIR with build.sh, use the "-D" option. To build to a DESTDIR without using build.sh, set the DESTDIR environment variable before running make build. It should be set to the pathname of an initially empty directory. Problems: if you do not use build.sh, you might need to update critical utilities without using DESTDIR since nothing is executed from what is installed in DESTDIR. (See critical utils, below.) Build often: This keeps critical utilities current enough to not choke on any other part of the source tree that depends on up to date functionality. If you use build.sh, you should not have this problem. What to do if things don't work: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ When things don't work there is usually a few things that commonly should be done. 1) make includes This should be done automatically by make build. 2) cd share/mk && make install Again, automatically done by make build. Failsafe rebuild of a small part of the tree: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ To make sure you rebuild something correctly you want to do something like the following: 1) Make sure the includes and .mk files are up to date. 2) Make sure any program used to build the particular utility is up to date. (yacc, lex, etc...) 3) cd ...path/to/util... make cleandir rm ...all obj directories... make cleandir # yes, again make obj make depend && make Failsafe rebuild of the entire tree: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ If you really want to make sure the source tree is clean and ready for a build try the following. Note that sourcing /etc/mk.conf (a make(1) Makefile) in this manner is not right, and will not work for anyone who uses any make(1) features in /etc/mk.conf. ---cut here--- #!/bin/sh . /etc/mk.conf if [ -z $NETBSDSRCDIR ] ; then NETBSDSRCDIR=/usr/src fi if [ \! -d $NETBSDSRCDIR ] ; then echo Unable to find sources exit 1 fi find $NETBSDSRCDIR -name \*.o -o -name obj.\* -o -name obj -exec rm \{\} \; if [ -z $BSDOBJDIR ] ; then BSDOBJDIR=/usr/obj fi if [ -d $BSDOBJDIR ] ; then rm -rf $BSDOBJDIR fi cd $NETBSDSRCDIR && make cleandir ---cut here--- Critical utilities: ^^^^^^^^^^^^^^^^^^^ usr.bin/compile_et usr.bin/make usr.bin/yacc usr.bin/lex usr.bin/xlint usr.bin/config Other problems and possible solutions: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Symptom:Complaints involving a Makefile. Fix: Rebuild usr.bin/make: cd usr.bin/make && make && make install Or, a failsafe method if that doesn't work: cd usr.bin/make && cc *.c */*.c -I . -o make && mv make /usr/bin Fix: Make sure .mk files are up to date. cd share/mk && make install Symptom:Kernel `config' fails to configure any kernel, including GENERIC. Fix: Rebuild usr.bin/config Symptom: Fix: Rebuild usr.bin/yacc Symptom: Fix: Rebuild usr.bin/lex Symptom: Fix: rm /usr/lib/libbfd.a Symptom:Obsolete intermediate files are used during compilation Fix: Try the following sequence of commands in the directory in question. make cleandir; rm `make print-objdir`; make cleandir; make obj (If you built the tree without "make obj" in the past, obsolete files may remain. The command tries to clean everything up) Symptom:.../sysinst/run.c:xx: warning: initialization from incompatible pointer type Fix: Rebuild and install usr.bin/menuc Symptom:mklocale not found during build in share/locale/ctype Fix: Build and install usr.bin/mklocale Symptom:undefined reference to `__assert13' or `__unsetenv13' Fix: Rebuild and install lib/libc Symptom:usr.bin/config fails to build. Fix: Try building with -DMAKE_BOOTSTRAP added to CFLAGS in Makefile. Symptom:undefined reference to `getprogname' or `setprogname' Fix: Rebuild and install lib/libc Symptom:lint does not understand the '-X' option Fix: May need to build & install libs with NOLINT=1 before rebuilding lint