BUILDING revision 1.80
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 (For building from out-of-date systems or 33 on a non-native host, see the build.sh shell script.) 34 35 UPDATING Special notes for updating from an earlier revision of 36 NetBSD.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 or commands executed by make(1) 169 are shown. 170 171 1 Brief messages are shown describing what is being done, 172 but the actual commands executed by make(1) are not dis- 173 played. 174 175 2 Descriptive messages are shown as above (prefixed with a 176 `#'), and ordinary commands performed by make(1) are 177 displayed. 178 179 3 In addition to the above, all commands performed by 180 make(1) are displayed, even if they would ordinarily 181 have been hidden through use of the ``@'' prefix in the 182 relevant makefile. 183 184 4 In addition to the above, commands executed by make(1) 185 are traced through use of the sh(1) ``-x'' flag. 186 187 Default: 2 188 189 MKCATPAGES Can be set to ``yes'' or ``no''. Indicates whether prefor- 190 matted plaintext manual pages will be created during a build. 191 192 Default: ``yes'' 193 194 MKCRYPTO Can be set to ``yes'' or ``no''. Indicates whether crypto- 195 graphic code will be included in a build; provided for the 196 benefit of countries that do not allow strong cryptography. 197 Will not affect use of the standard low-security password 198 encryption system, crypt(3). 199 200 Default: ``yes'' 201 202 MKDOC Can be set to ``yes'' or ``no''. Indicates whether system 203 documentation destined for DESTDIR/usr/share/doc will be 204 installed during a build. 205 206 Default: ``yes'' 207 208 MKHTML Can be set to ``yes'' or ``no''. Indicates whether prefor- 209 matted HTML manual pages will be built and installed 210 211 Default: ``yes'' 212 213 MKHOSTOBJ Can be set to ``yes'' or ``no''. If set to ``yes'', then for 214 programs intended to be run on the compile host, the name, 215 release, and architecture of the host operating system will 216 be suffixed to the name of the object directory created by 217 ``make obj''. (This allows multiple host systems to compile 218 NetBSD for a single target.) If set to ``no'', then programs 219 built to be run on the compile host will use the same object 220 directory names as programs built to be run on the target. 221 222 Default: ``no'' 223 224 MKINFO Can be set to ``yes'' or ``no''. Indicates whether GNU Info 225 files, used for the documentation for most of the compilation 226 tools, will be created and installed during a build. 227 228 Default: ``yes'' 229 230 MKLINT Can be set to ``yes'' or ``no''. Indicates whether lint(1) 231 will be run against portions of the NetBSD source code during 232 the build, and whether lint libraries will be installed into 233 DESTDIR/usr/libdata/lint. 234 235 Default: ``yes'' 236 237 MKMAN Can be set to ``yes'' or ``no''. Indicates whether manual 238 pages will be installed during a build. 239 240 Default: ``yes'' 241 242 MKNLS Can be set to ``yes'' or ``no''. Indicates whether Native 243 Language System locale zone files will be compiled and 244 installed during a build. 245 246 Default: ``yes'' 247 248 MKOBJ Can be set to ``yes'' or ``no''. Indicates whether object 249 directories will be created when running ``make obj''. If 250 set to ``no'', then all built files will be located inside 251 the regular source tree. 252 253 Default: ``yes'' 254 255 Note that setting MKOBJ to ``no'' is not recommended and may 256 cause problems when updating the tree with cvs(1). 257 258 MKPIC Can be set to ``yes'' or ``no''. Indicates whether shared 259 objects and libraries will be created and installed during a 260 build. If set to ``no'', the entire built system will be 261 statically linked. 262 263 Default: Platform dependent. As of this writing, all plat- 264 forms except sh3 default to ``yes''. 265 266 MKPICINSTALL 267 Can be set to ``yes'' or ``no''. Indicates whether the ar(1) 268 format libraries (lib*_pic.a), used to generate shared 269 libraries, are installed during a build. 270 271 Default: ``yes'' 272 273 MKPROFILE Can be set to ``yes'' or ``no''. Indicates whether profiled 274 libraries (lib*_p.a) will be built and installed during a 275 build. 276 277 Default: ``yes''; however, some platforms turn off MKPROFILE 278 by default at times due to toolchain problems with profiled 279 code. 280 281 MKSHARE Can be set to ``yes'' or ``no''. Indicates whether files 282 destined to reside in DESTDIR/usr/share will be built and 283 installed during a build. If set to ``no'', then all of 284 MKCATPAGES, MKDOC, MKINFO, MKMAN, and MKNLS will be set to 285 ``no'' unconditionally. 286 287 Default: ``yes'' 288 289 MKSTRIPIDENT 290 Can be set to ``yes'' or ``no''. Indicates whether program 291 binaries and shared libraries should be built to include RCS 292 IDs for use with ident(1). 293 294 Default: ``no'' 295 296 MKTTINTERP Can be set to ``yes'' or ``no''. For X builds, decides if 297 the TrueType bytecode interpreter is turned on. See 298 http://www.freetype.org/patents.html for details. 299 300 Default: ``no'' 301 302 MKUNPRIVED Can be set to ``yes'' or ``no''. Indicates whether an 303 unprivileged install will occur. The user, group, permis- 304 sions, and file flags, will not be set on the installed 305 items; instead the information will be appended to a file 306 called METALOG in DESTDIR. The contents of METALOG are used 307 during the generation of the distribution tar files to ensure 308 that the appropriate file ownership is stored. 309 310 Default: ``no'' 311 312 MKUPDATE Can be set to ``yes'' or ``no''. Indicates whether all 313 install operations intended to write to DESTDIR will compare 314 file timestamps before installing, and skip the install phase 315 if the destination files are up-to-date. This also has 316 implications on full builds (see next subsection). 317 318 Default: ``no'' 319 320 MKX11 Can be set to ``yes'' or ``no''. Indicates whether X11 is 321 built from X11SRCDIR. 322 323 Default: ``no'' 324 325 TOOLDIR Directory to hold the host tools, once built. If specified, 326 must be an absolute path. This directory should be unique to 327 a given host system and NetBSD source tree. (However, multi- 328 ple targets may share the same TOOLDIR; the target-dependent 329 files have unique names.) If unset, a default based on the 330 uname(1) information of the host platform will be created in 331 the .OBJDIR of src. 332 333 Default: Unset. 334 335 USETOOLS Indicates whether the tools specified by TOOLDIR should be 336 used as part of a build in progress. Must be set to ``yes'' 337 if cross-compiling. 338 339 yes Use the tools from TOOLDIR. 340 341 no Do not use the tools from TOOLDIR, but refuse to build 342 native compilation tool components that are version- 343 specific for that tool. 344 345 never Do not use the tools from TOOLDIR, even when building 346 native tool components. This is similar to the tradi- 347 tional NetBSD build method, but does not verify that 348 the compilation tools in use are up-to-date enough in 349 order to build the tree successfully. This may cause 350 build or runtime problems when building the whole 351 NetBSD source tree. 352 353 Default: ``yes'', unless TOOLCHAIN_MISSING is set to ``yes''. 354 355 USETOOLS is also set to ``no'' when using <bsd.*.mk> outside 356 the NetBSD source tree. 357 358 X11SRCDIR Directory containing the X11R6 source. If specified, must be 359 an absolute path. The main X11R6 source is found in 360 X11SRCDIR/xfree/xc. 361 362 Default: ``/usr/xsrc'' 363 364 X11FLAVOUR The style of X11 cross-built, set to either ``Xorg'' or 365 ``XFree86''. 366 367 Default: ``Xorg'' on amd64, i386, macppc, shark, sparc and 368 sparc64 platforms, ``XFree86'' on everything else. 369 370 "make" variables for full builds 371 These variables only affect the top level ``Makefile'' and do not affect 372 manually building subtrees of the NetBSD source code. 373 374 INSTALLWORLDDIR Location for the ``make installworld'' target to install 375 to. If specified, must be an absolute path. 376 377 Default: ``/'' 378 379 MKOBJDIRS Can be set to ``yes'' or ``no''. Indicates whether 380 object directories will be created automatically (via a 381 ``make obj'' pass) at the start of a build. 382 383 Default: ``no'' 384 385 If using build.sh, the default is ``yes''. This may be 386 set back to ``no'' by giving build.sh the -o option. 387 388 MKUPDATE Can be set to ``yes'' or ``no''. If set, then in addi- 389 tion to the effects described for MKUPDATE=yes above, 390 this implies the effects of NOCLEANDIR (i.e., ``make 391 cleandir'' is avoided). 392 393 Default: ``no'' 394 395 If using build.sh, this may be set by giving the -u 396 option. 397 398 NBUILDJOBS Now obsolete. Use the make(1) option -j, instead. See 399 below. 400 401 Default: Unset. 402 403 NOCLEANDIR If set, avoids the ``make cleandir'' phase of a full 404 build. This has the effect of allowing only changed 405 files in a source tree to be recompiled. This can speed 406 up builds when updating only a few files in the tree. 407 408 Default: Unset. 409 410 See also MKUPDATE. 411 412 NODISTRIBDIRS If set, avoids the ``make distrib-dirs'' phase of a full 413 build. This skips running mtree(8) on DESTDIR, useful 414 on systems where building as an unprivileged user, or 415 where it is known that the system-wide mtree files have 416 not changed. 417 418 Default: Unset. 419 420 NOINCLUDES If set, avoids the ``make includes'' phase of a full 421 build. This has the effect of preventing make(1) from 422 thinking that some programs are out-of-date simply 423 because the system include files have changed. However, 424 this option should not be used when updating the entire 425 NetBSD source tree arbitrarily; it is suggested to use 426 MKUPDATE=yes instead in that case. 427 428 Default: Unset. 429 430 RELEASEDIR If set, specifies the directory to which a release(7) 431 layout will be written at the end of a ``make release''. 432 If specified, must be an absolute path. 433 434 Default: Unset. 435 436 Note: build.sh will provide a default of releasedir (in 437 the top-level .OBJDIR) unless run in `expert' mode. 438 439 BUILDING 440 "make" command line options 441 This is not a summary of all the options available to make(1); only the 442 options used most frequently with NetBSD builds are listed here. 443 444 -j njob Run up to njob make(1) subjobs in parallel. Makefiles should 445 use .WAIT or have explicit dependencies as necessary to 446 enforce build ordering. 447 448 -m dir Specify the default directory for searching for system Make- 449 file segments, mainly the <bsd.*.mk> files. When building any 450 full NetBSD source tree, this should be set to the 451 ``share/mk'' directory in the source tree. This is set auto- 452 matically when building from the top level, or when using 453 build.sh. 454 455 -n Display the commands that would have been executed, but do not 456 actually execute them. This will still cause recursion to 457 take place. 458 459 -V var Print make(1)'s idea of the value of var. Does not build any 460 targets. 461 462 var=value Set the variable var to value, overriding any setting speci- 463 fied by the process environment, the MAKECONF configuration 464 file, or the system Makefile segments. 465 466 "make" targets 467 These default targets may be built by running make(1) in any subtree of 468 the NetBSD source code. It is recommended that none of these be used 469 from the top level Makefile; as a specific exception, ``make obj'' and 470 ``make cleandir'' are useful in that context. 471 472 all Build programs, libraries, and preformatted documentation. 473 474 clean Remove program and library object code files. 475 476 cleandir Same as clean, but also remove preformatted documentation, 477 dependency files generated by ``make depend'', and any other 478 files known to be created at build time. 479 480 depend Create dependency files (.depend) containing more detailed 481 information about the dependencies of source code on header 482 files. Allows programs to be recompiled automatically when a 483 dependency changes. 484 485 dependall Does a ``make depend'' immediately followed by a ``make all''. 486 This improves cache locality of the build since both passes 487 read the source files in their entirety. 488 489 distclean Synonym for cleandir. 490 491 includes Build and install system header files. Typically needed 492 before any system libraries or programs can be built. 493 494 install Install programs, libraries, and documentation into DESTDIR. 495 Few files will be installed to DESTDIR/dev, DESTDIR/etc, 496 DESTDIR/root or DESTDIR/var in order to prevent user supplied 497 configuration data from being overwritten. 498 499 lint Run lint(1) against the C source code, where appropriate, and 500 generate system-installed lint libraries. 501 502 obj Create object directories to be used for built files, instead 503 of building directly in the source tree. 504 505 tags Create ctags(1) searchable function lists usable by the ex(1) 506 and vi(1) text editors. 507 508 "make" targets for the top level 509 Additional make(1) targets are usable specifically from the top source 510 level to facilitate building the entire NetBSD source tree. 511 512 build Build the entire NetBSD system (except the kernel). This 513 orders portions of the source tree such that prerequisites 514 will be built in the proper order. 515 516 distribution Do a ``make build'', and then install a full distribution 517 (which does not include a kernel) into DESTDIR, including 518 files in DESTDIR/dev, DESTDIR/etc, DESTDIR/root and 519 DESTDIR/var. 520 521 buildworld As per ``make distribution'', except that it ensures that 522 DESTDIR is not the root directory. 523 524 installworld Install the distribution from DESTDIR to INSTALLWORLDDIR, 525 which defaults to the root directory. Ensures that 526 INSTALLWORLDDIR is not the root directory if cross compil- 527 ing. 528 529 The INSTALLSETS environment variable may be set to a list 530 of distribution sets to be installed. By default, all sets 531 except ``etc'' and ``xetc'' are installed, so most files in 532 INSTALLWORLDDIR/etc will not be installed or modified. 533 534 Note: Before performing this operation with 535 INSTALLWORLDDIR=/, it is highly recommended that you 536 upgrade your kernel and reboot. After performing this 537 operation, it is recommended that you use etcupdate(8) to 538 update files in INSTALLWORLDDIR/etc and that you use 539 postinstall(8) to check for inconsistencies (and possibly 540 to fix them). 541 542 sets Create distribution sets from DESTDIR into 543 RELEASEDIR/RELEASEMACHINEDIR/binary/sets. Should be run 544 after ``make distribution'', as ``make build'' alone does 545 not install all of the required files. 546 547 sourcesets Create source sets of the source tree into 548 RELEASEDIR/source/sets. 549 550 syspkgs Create syspkgs from DESTDIR into 551 RELEASEDIR/RELEASEMACHINEDIR/binary/syspkgs. Should be run 552 after ``make distribution'', as ``make build'' alone does 553 not install all of the required files. 554 555 release Do a ``make distribution'', build kernels, distribution 556 media, and install sets (this as per ``make sets''), and 557 then package the system into a standard release layout as 558 described by release(7). This requires that RELEASEDIR be 559 set (see above). 560 561 iso-image Create a NetBSD installation CD-ROM image in the 562 RELEASEDIR/iso directory. The CD-ROM file system will have 563 a layout as described in release(7). 564 565 For most machine types, the CD-ROM will be bootable, and 566 will automatically run the sysinst(8) menu-based installa- 567 tion program, which can be used to install or upgrade a 568 NetBSD system. Bootable CD-ROMs also contain tools that 569 may be useful in repairing a damaged NetBSD installation. 570 571 Before ``make iso-image'' is attempted, RELEASEDIR must be 572 populated by ``make release'' or equivalent. 573 574 Note that other, smaller, CD-ROM images may be created in 575 the RELEASEDIR/RELEASEMACHINEDIR/installation/cdrom direc- 576 tory by ``make release''. These smaller images usually 577 contain the same tools as the larger images in 578 RELEASEDIR/iso, but do not contain additional content such 579 as the distribution sets. 580 581 Note that the mac68k port still uses an older method of 582 creating CD-ROM images. This requires the mkisofs(1) util- 583 ity, which is not part of NetBSD, but which can be 584 installed from pkgsrc/sysutils/cdrtools. 585 586 iso-image-source 587 Create a NetBSD installation CD-ROM image in the 588 RELEASEDIR/iso directory. The CD-ROM file system will have 589 a layout as described in release(7). It will have top 590 level directories for the machine type and source. 591 592 For most machine types, the CD-ROM will be bootable, and 593 will automatically run the sysinst(8) menu-based installa- 594 tion program, which can be used to install or upgrade a 595 NetBSD system. Bootable CD-ROMs also contain tools that 596 may be useful in repairing a damaged NetBSD installation. 597 598 Before ``make iso-image-source'' is attempted, RELEASEDIR 599 must be populated by ``make sourcesets release'' or equiva- 600 lent. 601 602 Note that other, smaller, CD-ROM images may be created in 603 the RELEASEDIR/RELEASEMACHINEDIR/installation/cdrom direc- 604 tory by ``make release''. These smaller images usually 605 contain the same tools as the larger images in 606 RELEASEDIR/iso, but do not contain additional content such 607 as the distribution sets. 608 609 Note that the mac68k port still uses an older method of 610 creating CD-ROM images. This requires the mkisofs(1) util- 611 ity, which is not part of NetBSD, but which can be 612 installed from pkgsrc/sysutils/cdrtools. 613 614 regression-tests 615 Can only be run after building the regression tests in the 616 directory ``regress''. Runs those compiled regression 617 tests on the local host. Note that most tests are now man- 618 aged instead using atf(7); this target should probably run 619 those as well but currently does not. 620 621 The "build.sh" script 622 This script file is a Bourne shell script designed to build the entire 623 NetBSD system on any host with a Bourne shell in /bin/sh, including many 624 that are not POSIX compliant. Note that if a host system's /bin/sh is 625 unusually old and broken, the Korn Shell (/bin/ksh), if available, may be 626 a usable alternative. 627 628 All cross-compile builds, and most native builds, of the entire system 629 should make use of build.sh rather than just running ``make''. This way, 630 the make(1) program will be bootstrapped properly, in case the host sys- 631 tem has an older or incompatible ``make'' program. 632 633 When compiling the entire system via build.sh, many make(1) variables are 634 set for you in order to help encapsulate the build process. In the list 635 of options below, variables that are automatically set by build.sh are 636 noted where applicable. 637 638 The following operations are supported by build.sh: 639 640 build Build the system as per ``make build''. Before the main 641 part of the build commences, this command runs the obj 642 operation (unless the -o option is given), ``make 643 cleandir'' (unless the -u option is given), and the tools 644 operation. 645 646 distribution Build a full distribution as per ``make distribution''. 647 This command first runs the build operation. 648 649 release Build a full release as per ``make release''. This command 650 first runs the distribution operation. 651 652 makewrapper Create the nbmake-MACHINE wrapper. This operation is auto- 653 matically performed for any of the other operations. 654 655 cleandir Perform ``make cleandir''. 656 657 obj Perform ``make obj''. 658 659 tools Build and install the host tools from src/tools. This com- 660 mand will first run ``make obj'' and ``make cleandir'' in 661 the tools subdirectory unless the -o or -u options (respec- 662 tively) are given. 663 664 install=idir Install the contents of DESTDIR to idir, using ``make 665 installworld''. Note that files that are part of the 666 ``etc'' or ``xetc'' sets will not be installed. 667 668 kernel=kconf Build a new kernel. The kconf argument is the name of a 669 configuration file suitable for use by config(1). If kconf 670 does not contain any `/' characters, the configuration file 671 is expected to be found in the KERNCONFDIR directory, which 672 is typically sys/arch/MACHINE/conf. The new kernel will be 673 built in a subdirectory of KERNOBJDIR, which is typically 674 sys/arch/MACHINE/compile or an associated object directory. 675 676 This command does not imply the tools command; run the 677 tools command first unless it is certain that the tools 678 already exist and are up to date. 679 680 This command will run ``make cleandir'' on the kernel in 681 question first unless the -u option is given. 682 683 releasekernel=kconf 684 Install a gzip(1)ed copy of the kernel previously built by 685 kernel=kconf into 686 RELEASEDIR/RELEASEMACHINEDIR/binary/kernel, usually as 687 netbsd-kconf.gz, although the ``netbsd'' prefix is deter- 688 mined from the ``config'' directives in kconf. 689 690 sets Perform ``make sets''. 691 692 sourcesets Perform ``make sourcesets''. 693 694 syspkgs Perform ``make syspkgs''. 695 696 iso-image Perform ``make iso-image''. 697 698 iso-image-source 699 Perform ``make iso-image-source''. 700 701 The following command line options alter the behaviour of the build.sh 702 operations described above: 703 704 -a arch Set the value of MACHINE_ARCH to arch. 705 706 -B buildid 707 Set the value of BUILDID to buildid. This will also append the 708 build identifier to the name of the ``make'' wrapper script so 709 that the resulting name is of the form 710 ``nbmake-MACHINE-BUILDID''. 711 712 -C cdextras 713 Set the value of CDEXTRA to cdextras which is a space-separated 714 list of files or directories which will be added in order to 715 the CD-ROM image when used in conjunction with ``iso-image'' or 716 ``iso-image-source''. Files will be added to the root of the 717 CD-ROM image, whereas directories will be copied recursively. 718 If relative paths are specified, they will be converted to 719 absolute paths before being used. 720 721 -D dest Set the value of DESTDIR to dest. If a relative path is speci- 722 fied, it will be converted to an absolute path before being 723 used. 724 725 -E Set `expert' mode. This overrides various sanity checks, and 726 allows: DESTDIR does not have to be set to a non-root path for 727 builds, and MKUNPRIVED=yes does not have to be set when build- 728 ing as a non-root user. 729 730 Note: It is highly recommended that you know what you are doing 731 when you use this option. 732 733 -h Print a help message. 734 735 -j njob Run up to njob make(1) subjobs in parallel; passed through to 736 make(1). If you see failures for reasons other than running 737 out of memory while using build.sh with -j, please save com- 738 plete build logs so the failures can be analyzed. 739 740 To achieve the fastest builds, -j values between (1 + the num- 741 ber of CPUs) and (2 * the number of CPUs) are recommended. Use 742 lower values on machines with limited memory or I/O bandwidth. 743 744 -M obj Set MAKEOBJDIRPREFIX to obj. For instance, if the source 745 directory is /usr/src, a setting of ``-M /usr/obj'' will place 746 build-time files under /usr/obj/usr/src/bin, 747 /usr/obj/usr/src/lib, /usr/obj/usr/src/usr.bin, and so forth. 748 If a relative path is specified, it will be converted to an 749 absolute path before being used. Unsets MAKEOBJDIR. See ``-O 750 -obj'' for more information. 751 752 -m mach Set the value of MACHINE to mach, except in some special cases 753 listed below. This will also override any value of 754 MACHINE_ARCH in the process environment with a value deduced 755 from mach, unless -a is specified. All cross builds require 756 -m, but if unset on a NetBSD host, the host's value of MACHINE 757 will be detected and used automatically. 758 759 Some machines support multiple values for MACHINE_ARCH. The 760 following special cases for the mach argument are defined to 761 set the listed values of MACHINE and MACHINE_ARCH: 762 763 mach MACHINE MACHINE_ARCH 764 evbarm evbarm (not set) 765 evbarm-eb evbarm armeb 766 evbarm-el evbarm arm 767 evbmips evbmips (not set) 768 evbmips-eb evbmips mipseb 769 evbmips-el evbmips mipsel 770 evbsh3 evbsh3 (not set) 771 evbsh3-eb evbsh3 sh3eb 772 evbsh3-el evbsh3 sh3el 773 sbmips sbmips (not set) 774 sbmips-eb sbmips mipseb 775 sbmips-el sbmips mipsel 776 777 -N noiselevel 778 Set the ``noisyness'' level of the build, by setting 779 MAKEVERBOSE to noiselevel. 780 781 -n Show the commands that would be executed by build.sh, but do 782 not make any changes. This is similar in concept to ``make 783 -n''. 784 785 -O obj Create an appropriate transform macro for MAKEOBJDIR that will 786 place the built object files under obj. For instance, a set- 787 ting of ``-O /usr/obj'' will place build-time files under 788 /usr/obj/bin, /usr/obj/lib, /usr/obj/usr.bin, and so forth. If 789 a relative path is specified, it will be converted to an abso- 790 lute path before being used. Unsets MAKEOBJDIRPREFIX. 791 792 In normal use, exactly one of the -M or -O options should be 793 specified. If neither -M nor -O is specified, then a default 794 object directory will be chosen according to rules in 795 <bsd.obj.mk>. Relying on this default is not recommended 796 because it is determined by complex rules that are influenced 797 by the values of several variables and by the location of the 798 source directory. 799 800 -o Set the value of MKOBJDIRS to ``no''. Otherwise, it will be 801 automatically set to ``yes''. This default is opposite to the 802 behaviour when not using build.sh. 803 804 -R rel Set the value of RELEASEDIR to rel. If a relative path is 805 specified, it will be converted to an absolute path before 806 being used. 807 808 -r Remove the contents of DESTDIR and TOOLDIR before building 809 (provides a clean starting point). This will skip deleting 810 DESTDIR if building on a native system to the root directory. 811 812 -S seed Change the value of BUILDSEED to seed. This should rarely be 813 necessary. 814 815 -T tools Set the value of TOOLDIR to tools. If a relative path is spec- 816 ified, it will be converted to an absolute path before being 817 used. If set, the bootstrap ``make'' will only be rebuilt if 818 the source files for make(1) have changed. 819 820 -U Set MKUNPRIVED=yes. 821 822 -u Set MKUPDATE=yes. 823 824 -V var=[value] 825 Set the environment variable var to an optional value. This is 826 propagated to the nbmake wrapper. 827 828 -w wrapper 829 Create the nbmake wrapper script (see below) in a custom loca- 830 tion, specified by wrapper. This allows, for instance, to 831 place the wrapper in PATH automatically. Note that wrapper is 832 the full name of the file, not just a directory name. If a 833 relative path is specified, it will be converted to an absolute 834 path before being used. 835 836 -X x11src 837 Set the value of X11SRCDIR to x11src. If a relative path is 838 specified, it will be converted to an absolute path before 839 being used. 840 841 -x Set MKX11=yes. 842 843 -Z var Unset ("zap") the environment variable var. This is propagated 844 to the nbmake wrapper. 845 846 The "nbmake-MACHINE" wrapper script 847 If using the build.sh script to build NetBSD, a nbmake-MACHINE script 848 will be created in TOOLDIR/bin upon the first build to assist in building 849 subtrees on a cross-compile host. 850 851 nbmake-MACHINE can be invoked in lieu of make(1), and will instead call 852 the up-to-date version of ``nbmake'' installed into TOOLDIR/bin with sev- 853 eral key variables pre-set, including MACHINE, MACHINE_ARCH, and TOOLDIR. 854 nbmake-MACHINE will also set variables specified with -V, and unset vari- 855 ables specified with -Z. 856 857 This script can be symlinked into a directory listed in PATH, or called 858 with an absolute path. 859 860 EXAMPLES 861 1. % ./build.sh [options] tools kernel=GENERIC 862 863 Build a new toolchain, and use the new toolchain to configure and 864 build a new GENERIC kernel. 865 866 2. % ./build.sh [options] -U distribution 867 868 Using unprivileged mode, build a complete distribution to a DESTDIR 869 directory that build.sh selects (and will display). 870 871 3. # ./build.sh [options] -U install=/ 872 873 As root, install to / the distribution that was built by example 2. 874 Even though this is run as root, -U is required so that the permis- 875 sions stored in DESTDIR/METALOG are correctly applied to the files 876 as they're copied to /. 877 878 4. % ./build.sh [options] -U -u release 879 880 Using unprivileged mode, build a complete release to DESTDIR and 881 RELEASEDIR directories that build.sh selects (and will display). 882 MKUPDATE=yes (-u) is set to prevent the ``make cleandir'', so that 883 if this is run after example 2, it doesn't need to redo that portion 884 of the release build. 885 886 OBSOLETE VARIABLES 887 NBUILDJOBS Use the make(1) option -j instead. 888 889 USE_NEW_TOOLCHAIN 890 The new toolchain is now the default. To disable, use 891 TOOLCHAIN_MISSING=yes. 892 893 SEE ALSO 894 make(1), hier(7), release(7), etcupdate(8), postinstall(8), sysinst(8), 895 pkgsrc/sysutils/cdrtools 896 897 HISTORY 898 The build.sh based build scheme was introduced for NetBSD 1.6 as 899 USE_NEW_TOOLCHAIN, and re-worked to TOOLCHAIN_MISSING after that. 900 901 NetBSD September 10, 2008 NetBSD 902
Indexes created Fri Oct 10 14:10:03 GMT 2025