BUILDING revision 1.78.2.3
1 BUILDING(8) NetBSD System Manager's Manual BUILDING(8) 2 3 NAME 4 BUILDING -- Procedure for building NetBSD from source code. 5 6 REQUIREMENTS 7 NetBSD is designed to be buildable on most POSIX-compliant host systems. 8 The basic build procedure is the same whether compiling natively (on the 9 same NetBSD architecture) or cross compiling (on another architecture or 10 OS). 11 12 This source tree contains a special subtree, ``tools'', which uses the 13 host system to create a build toolchain for the target architecture. The 14 host system must have at least C and C++ compilers in order to create the 15 toolchain (make is not required); all other tools are created as part of 16 the NetBSD build process. (See the environment variables section below 17 if you need to override or manually select your compilers.) 18 19 FILES 20 Source tree layout 21 doc/BUILDING.mdoc 22 This document (in -mdoc troff format; the original copy). 23 24 BUILDING This document (in plaintext). 25 26 tools/compat/README 27 Special notes for cross-hosting a NetBSD build on non- 28 NetBSD platforms. 29 30 Makefile The main Makefile for NetBSD; should only be run for 31 native builds with an appropriately up-to-date version of 32 NetBSD make(1). (For building from out-of-date systems or 33 on a non-native host, see the build.sh shell script.) 34 35 UPDATING Special notes for updating from an earlier revision of 36 NetBSD. It is important to read this file before every 37 build of an updated source tree. 38 39 build.sh Bourne-compatible shell script used for building the host 40 build tools and the NetBSD system from scratch. Can be 41 used for both native and cross builds, and should be used 42 instead of make(1) for any source tree that is updated and 43 recompiled regularly. 44 45 crypto/dist/, dist/, gnu/dist/ 46 Sources imported verbatim from third parties, without man- 47 gling the existing build structure. Other source trees in 48 bin through usr.sbin use the NetBSD make(1) ``reachover'' 49 Makefile semantics when building these programs for a 50 native host. 51 52 distrib/, etc/ 53 Sources for items used when making a full release snap- 54 shot, such as files installed in DESTDIR/etc on the desti- 55 nation system, boot media, and release notes. 56 57 tests/, regress/ 58 Regression test harness. Can be cross-compiled, but only 59 run natively. tests/ uses the atf(7) test framework; 60 regress/ contains older tests that have not yet been 61 migrated to atf(7). 62 63 sys/ NetBSD kernel sources. 64 65 tools/ ``Reachover'' build structure for the host build tools. 66 This has a special method of determining out-of-date sta- 67 tus. 68 69 bin/ ... usr.sbin/ 70 Sources to the NetBSD userland (non-kernel) programs. If 71 any of these directories are missing, they will be skipped 72 during the build. 73 74 x11/ ``Reachover'' build structure for X11R6; the source is in 75 X11SRCDIR. 76 77 Build tree layout 78 The NetBSD build tree is described in hier(7), and the release layout is 79 described in release(7). 80 81 CONFIGURATION 82 Environment variables 83 Several environment variables control the behaviour of NetBSD builds. 84 85 HOST_SH Path name to a POSIX-compliant shell. If this is not 86 set explicitly, then the default is set using heuris- 87 tics dependent on the host platform, or from the shell 88 under which build.sh is executed (if that can be deter- 89 mined), or using the first copy of sh found in PATH. 90 If the host system's /bin/sh is not POSIX-compliant, we 91 suggest that you build using commands like 92 93 HOST_SH=/path/to/working/shell 94 export HOST_SH 95 ${HOST_SH} build.sh [options] 96 97 HOST_CC Path name to C compiler used to create the toolchain. 98 99 HOST_CXX Path name to C++ compiler used to create the toolchain. 100 101 MACHINE Machine type, e.g., ``macppc''. 102 103 MACHINE_ARCH Machine architecture, e.g., ``powerpc''. 104 105 MAKE Path name to invoke make(1) as. 106 107 MAKEFLAGS Flags to invoke make(1) with. 108 109 MAKEOBJDIR Directory to use as the .OBJDIR for the current direc- 110 tory. The value is subjected to variable expansion by 111 make(1). Typical usage is to set this variable to a 112 value involving the use of `${.CURDIR:S...}' or 113 `${.CURDIR:C...}', to derive the value of .OBJDIR from 114 the value of .CURDIR. Used only if MAKEOBJDIRPREFIX is 115 not defined. MAKEOBJDIR can be provided only in the 116 environment or via the -O flag of build.sh; it cannot 117 usefully be set inside a Makefile. 118 119 MAKEOBJDIRPREFIX Top level directory of the object directory tree. If 120 specified, must be an absolute path. If this is 121 defined, ${MAKEOBJDIRPREFIX}/${.CURDIR} is used as the 122 .OBJDIR for the current directory. The current direc- 123 tory may be read only. MAKEOBJDIRPREFIX can be pro- 124 vided only in the environment or via the -M flag of 125 build.sh; it cannot usefully be set inside a Makefile. 126 127 "make" variables 128 Several variables control the behavior of NetBSD builds. Unless other- 129 wise specified, these variables may be set in either the process environ- 130 ment or the make(1) configuration file specified by MAKECONF. 131 132 BUILDID Identifier for the build. The identifier will be appended to 133 object directory names, and can be consulted in the make(1) 134 configuration file in order to set additional build parame- 135 ters, such as compiler flags. 136 137 BUILDSEED GCC uses random numbers when compiling C++ code. This vari- 138 able seeds the gcc random number generator using the -fran- 139 dom-seed flag with this value. By default, it is set to 140 NetBSD-(majorversion). Using a fixed value causes C++ bina- 141 ries to be the same when built from the same sources. Addi- 142 tional information is available in the GCC documentation of 143 -frandom-seed. 144 145 DESTDIR Directory to contain the built NetBSD system. If set, spe- 146 cial options are passed to the compilation tools to prevent 147 their default use of the host system's /usr/include, 148 /usr/lib, and so forth. This pathname must be an absolute 149 path, and should not end with a slash (/) character. (For 150 installation into the system's root directory, set DESTDIR to 151 an empty string, not to ``/''). The directory must reside on 152 a file system which supports long file names and hard links. 153 154 Default: Empty string if USETOOLS is ``yes''; unset other- 155 wise. 156 157 Note: build.sh will provide a default of destdir.MACHINE (in 158 the top-level .OBJDIR) unless run in `expert' mode. 159 160 MAKECONF The name of the make(1) configuration file. Only settable in 161 the process environment. 162 163 Default: ``/etc/mk.conf'' 164 165 MAKEVERBOSE 166 Level of verbosity of status messages. Supported values: 167 168 0 No descriptive messages are shown. 169 170 1 Descriptive messages are shown. 171 172 2 Descriptive messages (prefixed with a `#') and command 173 output is not suppressed. 174 175 Default: 2 176 177 MKCATPAGES Can be set to ``yes'' or ``no''. Indicates whether prefor- 178 matted plaintext manual pages will be created during a build. 179 180 Default: ``yes'' 181 182 MKCRYPTO Can be set to ``yes'' or ``no''. Indicates whether crypto- 183 graphic code will be included in a build; provided for the 184 benefit of countries that do not allow strong cryptography. 185 Will not affect use of the standard low-security password 186 encryption system, crypt(3). 187 188 Default: ``yes'' 189 190 MKDOC Can be set to ``yes'' or ``no''. Indicates whether system 191 documentation destined for DESTDIR/usr/share/doc will be 192 installed during a build. 193 194 Default: ``yes'' 195 196 MKHTML Can be set to ``yes'' or ``no''. Indicates whether prefor- 197 matted HTML manual pages will be built and installed 198 199 Default: ``yes'' 200 201 MKHOSTOBJ Can be set to ``yes'' or ``no''. If set to ``yes'', then for 202 programs intended to be run on the compile host, the name, 203 release, and architecture of the host operating system will 204 be suffixed to the name of the object directory created by 205 ``make obj''. (This allows multiple host systems to compile 206 NetBSD for a single target.) If set to ``no'', then programs 207 built to be run on the compile host will use the same object 208 directory names as programs built to be run on the target. 209 210 Default: ``no'' 211 212 MKINFO Can be set to ``yes'' or ``no''. Indicates whether GNU Info 213 files, used for the documentation for most of the compilation 214 tools, will be created and installed during a build. 215 216 Default: ``yes'' 217 218 MKLINT Can be set to ``yes'' or ``no''. Indicates whether lint(1) 219 will be run against portions of the NetBSD source code during 220 the build, and whether lint libraries will be installed into 221 DESTDIR/usr/libdata/lint. 222 223 Default: ``yes'' 224 225 MKMAN Can be set to ``yes'' or ``no''. Indicates whether manual 226 pages will be installed during a build. 227 228 Default: ``yes'' 229 230 MKNLS Can be set to ``yes'' or ``no''. Indicates whether Native 231 Language System locale zone files will be compiled and 232 installed during a build. 233 234 Default: ``yes'' 235 236 MKOBJ Can be set to ``yes'' or ``no''. Indicates whether object 237 directories will be created when running ``make obj''. If 238 set to ``no'', then all built files will be located inside 239 the regular source tree. 240 241 Default: ``yes'' 242 243 Note that setting MKOBJ to ``no'' is not recommended and may 244 cause problems when updating the tree with cvs(1). 245 246 MKPIC Can be set to ``yes'' or ``no''. Indicates whether shared 247 objects and libraries will be created and installed during a 248 build. If set to ``no'', the entire built system will be 249 statically linked. 250 251 Default: Platform dependent. As of this writing, all plat- 252 forms except sh3 default to ``yes''. 253 254 MKPICINSTALL 255 Can be set to ``yes'' or ``no''. Indicates whether the ar(1) 256 format libraries (lib*_pic.a), used to generate shared 257 libraries, are installed during a build. 258 259 Default: ``yes'' 260 261 MKPROFILE Can be set to ``yes'' or ``no''. Indicates whether profiled 262 libraries (lib*_p.a) will be built and installed during a 263 build. 264 265 Default: ``yes''; however, some platforms turn off MKPROFILE 266 by default at times due to toolchain problems with profiled 267 code. 268 269 MKSHARE Can be set to ``yes'' or ``no''. Indicates whether files 270 destined to reside in DESTDIR/usr/share will be built and 271 installed during a build. If set to ``no'', then all of 272 MKCATPAGES, MKDOC, MKINFO, MKMAN, and MKNLS will be set to 273 ``no'' unconditionally. 274 275 Default: ``yes'' 276 277 MKSTRIPIDENT 278 Can be set to ``yes'' or ``no''. Indicates whether program 279 binaries and shared libraries should be built to include RCS 280 IDs for use with ident(1). 281 282 Default: ``no'' 283 284 MKSUBPIXEL Can be set to ``yes'' or ``no''. For X builds, decides if 285 subpixel rendering code in FreeType is turned on. Turned off 286 by default because of patent issues. 287 288 Default: ``no'' 289 290 MKTTINTERP Can be set to ``yes'' or ``no''. For X builds, decides if 291 the TrueType bytecode interpreter is turned on. See 292 http://www.freetype.org/patents.html for details. 293 294 Default: ``no'' 295 296 MKUNPRIVED Can be set to ``yes'' or ``no''. Indicates whether an 297 unprivileged install will occur. The user, group, permis- 298 sions, and file flags, will not be set on the installed 299 items; instead the information will be appended to a file 300 called METALOG in DESTDIR. The contents of METALOG are used 301 during the generation of the distribution tar files to ensure 302 that the appropriate file ownership is stored. 303 304 Default: ``no'' 305 306 MKUPDATE Can be set to ``yes'' or ``no''. Indicates whether all 307 install operations intended to write to DESTDIR will compare 308 file timestamps before installing, and skip the install phase 309 if the destination files are up-to-date. This also has 310 implications on full builds (see next subsection). 311 312 Default: ``no'' 313 314 MKX11 Can be set to ``yes'' or ``no''. Indicates whether X11 is 315 built from X11SRCDIR. 316 317 Default: ``no'' 318 319 TOOLDIR Directory to hold the host tools, once built. If specified, 320 must be an absolute path. This directory should be unique to 321 a given host system and NetBSD source tree. (However, multi- 322 ple targets may share the same TOOLDIR; the target-dependent 323 files have unique names.) If unset, a default based on the 324 uname(1) information of the host platform will be created in 325 the .OBJDIR of src. 326 327 Default: Unset. 328 329 USETOOLS Indicates whether the tools specified by TOOLDIR should be 330 used as part of a build in progress. Must be set to ``yes'' 331 if cross-compiling. 332 333 yes Use the tools from TOOLDIR. 334 335 no Do not use the tools from TOOLDIR, but refuse to build 336 native compilation tool components that are version- 337 specific for that tool. 338 339 never Do not use the tools from TOOLDIR, even when building 340 native tool components. This is similar to the tradi- 341 tional NetBSD build method, but does not verify that 342 the compilation tools in use are up-to-date enough in 343 order to build the tree successfully. This may cause 344 build or runtime problems when building the whole 345 NetBSD source tree. 346 347 Default: ``yes'', unless TOOLCHAIN_MISSING is set to ``yes''. 348 349 USETOOLS is also set to ``no'' when using <bsd.*.mk> outside 350 the NetBSD source tree. 351 352 X11SRCDIR Directory containing the X11R6 source. If specified, must be 353 an absolute path. The main X11R6 source is found in 354 X11SRCDIR/xfree/xc. 355 356 Default: ``/usr/xsrc'' 357 358 X11FLAVOUR The style of X11 cross-built, set to either ``Xorg'' or 359 ``XFree86''. 360 361 Default: ``Xorg'' on amd64, i386, macppc, shark and sparc64 362 platforms, ``XFree86'' on everything else. 363 364 "make" variables for full builds 365 These variables only affect the top level ``Makefile'' and do not affect 366 manually building subtrees of the NetBSD source code. 367 368 INSTALLWORLDDIR Location for the ``make installworld'' target to install 369 to. If specified, must be an absolute path. 370 371 Default: ``/'' 372 373 MKOBJDIRS Can be set to ``yes'' or ``no''. Indicates whether 374 object directories will be created automatically (via a 375 ``make obj'' pass) at the start of a build. 376 377 Default: ``no'' 378 379 If using build.sh, the default is ``yes''. This may be 380 set back to ``no'' by giving build.sh the -o option. 381 382 MKUPDATE Can be set to ``yes'' or ``no''. If set, then in addi- 383 tion to the effects described for MKUPDATE=yes above, 384 this implies the effects of NOCLEANDIR (i.e., ``make 385 cleandir'' is avoided). 386 387 Default: ``no'' 388 389 If using build.sh, this may be set by giving the -u 390 option. 391 392 NBUILDJOBS Now obsolete. Use the make(1) option -j, instead. See 393 below. 394 395 Default: Unset. 396 397 NOCLEANDIR If set, avoids the ``make cleandir'' phase of a full 398 build. This has the effect of allowing only changed 399 files in a source tree to be recompiled. This can speed 400 up builds when updating only a few files in the tree. 401 402 Default: Unset. 403 404 See also MKUPDATE. 405 406 NODISTRIBDIRS If set, avoids the ``make distrib-dirs'' phase of a full 407 build. This skips running mtree(8) on DESTDIR, useful 408 on systems where building as an unprivileged user, or 409 where it is known that the system-wide mtree files have 410 not changed. 411 412 Default: Unset. 413 414 NOINCLUDES If set, avoids the ``make includes'' phase of a full 415 build. This has the effect of preventing make(1) from 416 thinking that some programs are out-of-date simply 417 because the system include files have changed. However, 418 this option should not be used when updating the entire 419 NetBSD source tree arbitrarily; it is suggested to use 420 MKUPDATE=yes instead in that case. 421 422 Default: Unset. 423 424 RELEASEDIR If set, specifies the directory to which a release(7) 425 layout will be written at the end of a ``make release''. 426 If specified, must be an absolute path. 427 428 Default: Unset. 429 430 Note: build.sh will provide a default of releasedir (in 431 the top-level .OBJDIR) unless run in `expert' mode. 432 433 BUILDING 434 "make" command line options 435 This is not a summary of all the options available to make(1); only the 436 options used most frequently with NetBSD builds are listed here. 437 438 -j njob Run up to njob make(1) subjobs in parallel. Makefiles should 439 use .WAIT or have explicit dependencies as necessary to 440 enforce build ordering. 441 442 -m dir Specify the default directory for searching for system Make- 443 file segments, mainly the <bsd.*.mk> files. When building any 444 full NetBSD source tree, this should be set to the 445 ``share/mk'' directory in the source tree. This is set auto- 446 matically when building from the top level, or when using 447 build.sh. 448 449 -n Display the commands that would have been executed, but do not 450 actually execute them. This will still cause recursion to 451 take place. 452 453 -V var Print make(1)'s idea of the value of var. Does not build any 454 targets. 455 456 var=value Set the variable var to value, overriding any setting speci- 457 fied by the process environment, the MAKECONF configuration 458 file, or the system Makefile segments. 459 460 "make" targets 461 These default targets may be built by running make(1) in any subtree of 462 the NetBSD source code. It is recommended that none of these be used 463 from the top level Makefile; as a specific exception, ``make obj'' and 464 ``make cleandir'' are useful in that context. 465 466 all Build programs, libraries, and preformatted documentation. 467 468 clean Remove program and library object code files. 469 470 cleandir Same as clean, but also remove preformatted documentation, 471 dependency files generated by ``make depend'', and any other 472 files known to be created at build time. 473 474 depend Create dependency files (.depend) containing more detailed 475 information about the dependencies of source code on header 476 files. Allows programs to be recompiled automatically when a 477 dependency changes. 478 479 dependall Does a ``make depend'' immediately followed by a ``make all''. 480 This improves cache locality of the build since both passes 481 read the source files in their entirety. 482 483 distclean Synonym for cleandir. 484 485 includes Build and install system header files. Typically needed 486 before any system libraries or programs can be built. 487 488 install Install programs, libraries, and documentation into DESTDIR. 489 Few files will be installed to DESTDIR/dev, DESTDIR/etc, 490 DESTDIR/root or DESTDIR/var in order to prevent user supplied 491 configuration data from being overwritten. 492 493 lint Run lint(1) against the C source code, where appropriate, and 494 generate system-installed lint libraries. 495 496 obj Create object directories to be used for built files, instead 497 of building directly in the source tree. 498 499 tags Create ctags(1) searchable function lists usable by the ex(1) 500 and vi(1) text editors. 501 502 "make" targets for the top level 503 Additional make(1) targets are usable specifically from the top source 504 level to facilitate building the entire NetBSD source tree. 505 506 build Build the entire NetBSD system (except the kernel). This 507 orders portions of the source tree such that prerequisites 508 will be built in the proper order. 509 510 distribution Do a ``make build'', and then install a full distribution 511 (which does not include a kernel) into DESTDIR, including 512 files in DESTDIR/dev, DESTDIR/etc, DESTDIR/root and 513 DESTDIR/var. 514 515 buildworld As per ``make distribution'', except that it ensures that 516 DESTDIR is not the root directory. 517 518 installworld Install the distribution from DESTDIR to INSTALLWORLDDIR, 519 which defaults to the root directory. Ensures that 520 INSTALLWORLDDIR is not the root directory if cross compil- 521 ing. 522 523 The INSTALLSETS environment variable may be set to a list 524 of distribution sets to be installed. By default, all sets 525 except ``etc'' and ``xetc'' are installed, so most files in 526 INSTALLWORLDDIR/etc will not be installed or modified. 527 528 Note: Before performing this operation with 529 INSTALLWORLDDIR=/, it is highly recommended that you 530 upgrade your kernel and reboot. After performing this 531 operation, it is recommended that you use etcupdate(8) to 532 update files in INSTALLWORLDDIR/etc and that you use 533 postinstall(8) to check for inconsistencies (and possibly 534 to fix them). 535 536 sets Create distribution sets from DESTDIR into 537 RELEASEDIR/RELEASEMACHINEDIR/binary/sets. Should be run 538 after ``make distribution'', as ``make build'' alone does 539 not install all of the required files. 540 541 sourcesets Create source sets of the source tree into 542 RELEASEDIR/source/sets. 543 544 syspkgs Create syspkgs from DESTDIR into 545 RELEASEDIR/RELEASEMACHINEDIR/binary/syspkgs. Should be run 546 after ``make distribution'', as ``make build'' alone does 547 not install all of the required files. 548 549 release Do a ``make distribution'', build kernels, distribution 550 media, and install sets (this as per ``make sets''), and 551 then package the system into a standard release layout as 552 described by release(7). This requires that RELEASEDIR be 553 set (see above). 554 555 iso-image Create a NetBSD installation CD-ROM image in the 556 RELEASEDIR/iso directory. The CD-ROM file system will have 557 a layout as described in release(7). 558 559 For most machine types, the CD-ROM will be bootable, and 560 will automatically run the sysinst(8) menu-based installa- 561 tion program, which can be used to install or upgrade a 562 NetBSD system. Bootable CD-ROMs also contain tools that 563 may be useful in repairing a damaged NetBSD installation. 564 565 Before ``make iso-image'' is attempted, RELEASEDIR must be 566 populated by ``make release'' or equivalent. 567 568 Note that other, smaller, CD-ROM images may be created in 569 the RELEASEDIR/RELEASEMACHINEDIR/installation/cdrom direc- 570 tory by ``make release''. These smaller images usually 571 contain the same tools as the larger images in 572 RELEASEDIR/iso, but do not contain additional content such 573 as the distribution sets. 574 575 Note that the mac68k port still uses an older method of 576 creating CD-ROM images. This requires the mkisofs(1) util- 577 ity, which is not part of NetBSD, but which can be 578 installed from pkgsrc/sysutils/cdrtools. 579 580 iso-image-source 581 Create a NetBSD installation CD-ROM image in the 582 RELEASEDIR/iso directory. The CD-ROM file system will have 583 a layout as described in release(7). It will have top 584 level directories for the machine type and source. 585 586 For most machine types, the CD-ROM will be bootable, and 587 will automatically run the sysinst(8) menu-based installa- 588 tion program, which can be used to install or upgrade a 589 NetBSD system. Bootable CD-ROMs also contain tools that 590 may be useful in repairing a damaged NetBSD installation. 591 592 Before ``make iso-image-source'' is attempted, RELEASEDIR 593 must be populated by ``make sourcesets release'' or equiva- 594 lent. 595 596 Note that other, smaller, CD-ROM images may be created in 597 the RELEASEDIR/RELEASEMACHINEDIR/installation/cdrom direc- 598 tory by ``make release''. These smaller images usually 599 contain the same tools as the larger images in 600 RELEASEDIR/iso, but do not contain additional content such 601 as the distribution sets. 602 603 Note that the mac68k port still uses an older method of 604 creating CD-ROM images. This requires the mkisofs(1) util- 605 ity, which is not part of NetBSD, but which can be 606 installed from pkgsrc/sysutils/cdrtools. 607 608 regression-tests 609 Can only be run after building the regression tests in the 610 directory ``regress''. Runs those compiled regression 611 tests on the local host. Note that most tests are now man- 612 aged instead using atf(7); this target should probably run 613 those as well but currently does not. 614 615 The "build.sh" script 616 This script file is a Bourne shell script designed to build the entire 617 NetBSD system on any host with a Bourne shell in /bin/sh, including many 618 that are not POSIX compliant. Note that if a host system's /bin/sh is 619 unusually old and broken, the Korn Shell (/bin/ksh), if available, may be 620 a usable alternative. 621 622 All cross-compile builds, and most native builds, of the entire system 623 should make use of build.sh rather than just running ``make''. This way, 624 the make(1) program will be bootstrapped properly, in case the host sys- 625 tem has an older or incompatible ``make'' program. 626 627 When compiling the entire system via build.sh, many make(1) variables are 628 set for you in order to help encapsulate the build process. In the list 629 of options below, variables that are automatically set by build.sh are 630 noted where applicable. 631 632 The following operations are supported by build.sh: 633 634 build Build the system as per ``make build''. Before the main 635 part of the build commences, this command runs the obj 636 operation (unless the -o option is given), ``make 637 cleandir'' (unless the -u option is given), and the tools 638 operation. 639 640 distribution Build a full distribution as per ``make distribution''. 641 This command first runs the build operation. 642 643 release Build a full release as per ``make release''. This command 644 first runs the distribution operation. 645 646 makewrapper Create the nbmake-MACHINE wrapper. This operation is auto- 647 matically performed for any of the other operations. 648 649 cleandir Perform ``make cleandir''. 650 651 obj Perform ``make obj''. 652 653 tools Build and install the host tools from src/tools. This com- 654 mand will first run ``make obj'' and ``make cleandir'' in 655 the tools subdirectory unless the -o or -u options (respec- 656 tively) are given. 657 658 install=idir Install the contents of DESTDIR to idir, using ``make 659 installworld''. Note that files that are part of the 660 ``etc'' or ``xetc'' sets will not be installed. 661 662 kernel=kconf Build a new kernel. The kconf argument is the name of a 663 configuration file suitable for use by config(1). If kconf 664 does not contain any `/' characters, the configuration file 665 is expected to be found in the KERNCONFDIR directory, which 666 is typically sys/arch/MACHINE/conf. The new kernel will be 667 built in a subdirectory of KERNOBJDIR, which is typically 668 sys/arch/MACHINE/compile or an associated object directory. 669 670 This command does not imply the tools command; run the 671 tools command first unless it is certain that the tools 672 already exist and are up to date. 673 674 This command will run ``make cleandir'' on the kernel in 675 question first unless the -u option is given. 676 677 releasekernel=kconf 678 Install a gzip(1)ed copy of the kernel previously built by 679 kernel=kconf into 680 RELEASEDIR/RELEASEMACHINEDIR/binary/kernel, usually as 681 netbsd-kconf.gz, although the ``netbsd'' prefix is deter- 682 mined from the ``config'' directives in kconf. 683 684 sets Perform ``make sets''. 685 686 sourcesets Perform ``make sourcesets''. 687 688 syspkgs Perform ``make syspkgs''. 689 690 iso-image Perform ``make iso-image''. 691 692 iso-image-source 693 Perform ``make iso-image-source''. 694 695 The following command line options alter the behaviour of the build.sh 696 operations described above: 697 698 -a arch Set the value of MACHINE_ARCH to arch. 699 700 -B buildid 701 Set the value of BUILDID to buildid. This will also append the 702 build identifier to the name of the ``make'' wrapper script so 703 that the resulting name is of the form 704 ``nbmake-MACHINE-BUILDID''. 705 706 -C cdextras 707 Set the value of CDEXTRA to cdextras which is a space-separated 708 list of files or directories which will be added in order to 709 the CD-ROM image when used in conjunction with ``iso-image'' or 710 ``iso-image-source''. Files will be added to the root of the 711 CD-ROM image, whereas directories will be copied recursively. 712 If relative paths are specified, they will be converted to 713 absolute paths before being used. 714 715 -D dest Set the value of DESTDIR to dest. If a relative path is speci- 716 fied, it will be converted to an absolute path before being 717 used. 718 719 -E Set `expert' mode. This overrides various sanity checks, and 720 allows: DESTDIR does not have to be set to a non-root path for 721 builds, and MKUNPRIVED=yes does not have to be set when build- 722 ing as a non-root user. 723 724 Note: It is highly recommended that you know what you are doing 725 when you use this option. 726 727 -h Print a help message. 728 729 -j njob Run up to njob make(1) subjobs in parallel; passed through to 730 make(1). If you see failures for reasons other than running 731 out of memory while using build.sh with -j, please save com- 732 plete build logs so the failures can be analyzed. 733 734 To achieve the fastest builds, -j values between (1 + the num- 735 ber of CPUs) and (2 * the number of CPUs) are recommended. Use 736 lower values on machines with limited memory or I/O bandwidth. 737 738 -M obj Set MAKEOBJDIRPREFIX to obj. For instance, if the source 739 directory is /usr/src, a setting of ``-M /usr/obj'' will place 740 build-time files under /usr/obj/usr/src/bin, 741 /usr/obj/usr/src/lib, /usr/obj/usr/src/usr.bin, and so forth. 742 If a relative path is specified, it will be converted to an 743 absolute path before being used. Unsets MAKEOBJDIR. See ``-O 744 -obj'' for more information. 745 746 -m mach Set the value of MACHINE to mach, except in some special cases 747 listed below. This will also override any value of 748 MACHINE_ARCH in the process environment with a value deduced 749 from mach, unless -a is specified. All cross builds require 750 -m, but if unset on a NetBSD host, the host's value of MACHINE 751 will be detected and used automatically. 752 753 Some machines support multiple values for MACHINE_ARCH. The 754 following special cases for the mach argument are defined to 755 set the listed values of MACHINE and MACHINE_ARCH: 756 757 mach MACHINE MACHINE_ARCH 758 evbarm evbarm (not set) 759 evbarm-eb evbarm armeb 760 evbarm-el evbarm arm 761 evbmips evbmips (not set) 762 evbmips-eb evbmips mipseb 763 evbmips-el evbmips mipsel 764 evbsh3 evbsh3 (not set) 765 evbsh3-eb evbsh3 sh3eb 766 evbsh3-el evbsh3 sh3el 767 sbmips sbmips (not set) 768 sbmips-eb sbmips mipseb 769 sbmips-el sbmips mipsel 770 771 -N noiselevel 772 Set the ``noisyness'' level of the build, by setting 773 MAKEVERBOSE to noiselevel. 774 775 -n Show the commands that would be executed by build.sh, but do 776 not make any changes. This is similar in concept to ``make 777 -n''. 778 779 -O obj Create an appropriate transform macro for MAKEOBJDIR that will 780 place the built object files under obj. For instance, a set- 781 ting of ``-O /usr/obj'' will place build-time files under 782 /usr/obj/bin, /usr/obj/lib, /usr/obj/usr.bin, and so forth. If 783 a relative path is specified, it will be converted to an abso- 784 lute path before being used. Unsets MAKEOBJDIRPREFIX. 785 786 In normal use, exactly one of the -M or -O options should be 787 specified. If neither -M nor -O is specified, then a default 788 object directory will be chosen according to rules in 789 <bsd.obj.mk>. Relying on this default is not recommended 790 because it is determined by complex rules that are influenced 791 by the values of several variables and by the location of the 792 source directory. 793 794 -o Set the value of MKOBJDIRS to ``no''. Otherwise, it will be 795 automatically set to ``yes''. This default is opposite to the 796 behaviour when not using build.sh. 797 798 -R rel Set the value of RELEASEDIR to rel. If a relative path is 799 specified, it will be converted to an absolute path before 800 being used. 801 802 -r Remove the contents of DESTDIR and TOOLDIR before building 803 (provides a clean starting point). This will skip deleting 804 DESTDIR if building on a native system to the root directory. 805 806 -S seed Change the value of BUILDSEED to seed. This should rarely be 807 necessary. 808 809 -T tools Set the value of TOOLDIR to tools. If a relative path is spec- 810 ified, it will be converted to an absolute path before being 811 used. If set, the bootstrap ``make'' will only be rebuilt if 812 the source files for make(1) have changed. 813 814 -U Set MKUNPRIVED=yes. 815 816 -u Set MKUPDATE=yes. 817 818 -V var=[value] 819 Set the environment variable var to an optional value. This is 820 propagated to the nbmake wrapper. 821 822 -w wrapper 823 Create the nbmake wrapper script (see below) in a custom loca- 824 tion, specified by wrapper. This allows, for instance, to 825 place the wrapper in PATH automatically. Note that wrapper is 826 the full name of the file, not just a directory name. If a 827 relative path is specified, it will be converted to an absolute 828 path before being used. 829 830 -X x11src 831 Set the value of X11SRCDIR to x11src. If a relative path is 832 specified, it will be converted to an absolute path before 833 being used. 834 835 -x Set MKX11=yes. 836 837 -Z var Unset ("zap") the environment variable var. This is propagated 838 to the nbmake wrapper. 839 840 The "nbmake-MACHINE" wrapper script 841 If using the build.sh script to build NetBSD, a nbmake-MACHINE script 842 will be created in TOOLDIR/bin upon the first build to assist in building 843 subtrees on a cross-compile host. 844 845 nbmake-MACHINE can be invoked in lieu of make(1), and will instead call 846 the up-to-date version of ``nbmake'' installed into TOOLDIR/bin with sev- 847 eral key variables pre-set, including MACHINE, MACHINE_ARCH, and TOOLDIR. 848 nbmake-MACHINE will also set variables specified with -V, and unset vari- 849 ables specified with -Z. 850 851 This script can be symlinked into a directory listed in PATH, or called 852 with an absolute path. 853 854 EXAMPLES 855 1. % ./build.sh [options] tools kernel=GENERIC 856 857 Build a new toolchain, and use the new toolchain to configure and 858 build a new GENERIC kernel. 859 860 2. % ./build.sh [options] -U distribution 861 862 Using unprivileged mode, build a complete distribution to a DESTDIR 863 directory that build.sh selects (and will display). 864 865 3. # ./build.sh [options] -U install=/ 866 867 As root, install to / the distribution that was built by example 2. 868 Even though this is run as root, -U is required so that the permis- 869 sions stored in DESTDIR/METALOG are correctly applied to the files 870 as they're copied to /. 871 872 4. % ./build.sh [options] -U -u release 873 874 Using unprivileged mode, build a complete release to DESTDIR and 875 RELEASEDIR directories that build.sh selects (and will display). 876 MKUPDATE=yes (-u) is set to prevent the ``make cleandir'', so that 877 if this is run after example 2, it doesn't need to redo that portion 878 of the release build. 879 880 OBSOLETE VARIABLES 881 NBUILDJOBS Use the make(1) option -j instead. 882 883 USE_NEW_TOOLCHAIN 884 The new toolchain is now the default. To disable, use 885 TOOLCHAIN_MISSING=yes. 886 887 SEE ALSO 888 make(1), hier(7), release(7), etcupdate(8), postinstall(8), sysinst(8), 889 pkgsrc/sysutils/cdrtools 890 891 HISTORY 892 The build.sh based build scheme was introduced for NetBSD 1.6 as 893 USE_NEW_TOOLCHAIN, and re-worked to TOOLCHAIN_MISSING after that. 894 895 NetBSD May 1, 2009 NetBSD 896
Indexes created Fri Oct 10 14:10:03 GMT 2025