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Annotation of src/share/mk/bsd.README, Revision 1.45

1.45    ! lukem       1: #      $NetBSD: bsd.README,v 1.44 1998/11/07 09:40:35 erh Exp $
1.24      mikel       2: #      @(#)bsd.README  8.2 (Berkeley) 4/2/94
1.1       cgd         3:
                      4: This is the README file for the new make "include" files for the BSD
                      5: source tree.  The files are installed in /usr/share/mk, and are, by
1.11      jtc         6: convention, named with the suffix ".mk".
1.1       cgd         7:
                      8: Note, this file is not intended to replace reading through the .mk
                      9: files for anything tricky.
                     10:
                     11: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                     12:
                     13: RANDOM THINGS WORTH KNOWING:
                     14:
                     15: The files are simply C-style #include files, and pretty much behave like
                     16: you'd expect.  The syntax is slightly different in that a single '.' is
                     17: used instead of the hash mark, i.e. ".include <bsd.prog.mk>".
                     18:
                     19: One difference that will save you lots of debugging time is that inclusion
                     20: of the file is normally done at the *end* of the Makefile.  The reason for
                     21: this is because .mk files often modify variables and behavior based on the
                     22: values of variables set in the Makefile.  To make this work, remember that
                     23: the FIRST target found is the target that is used, i.e. if the Makefile has:
                     24:
                     25:        a:
                     26:                echo a
                     27:        a:
                     28:                echo a number two
                     29:
                     30: the command "make a" will echo "a".  To make things confusing, the SECOND
                     31: variable assignment is the overriding one, i.e. if the Makefile has:
                     32:
                     33:        a=      foo
                     34:        a=      bar
                     35:
                     36:        b:
                     37:                echo ${a}
                     38:
                     39: the command "make b" will echo "bar".  This is for compatibility with the
                     40: way the V7 make behaved.
                     41:
                     42: It's fairly difficult to make the BSD .mk files work when you're building
                     43: multiple programs in a single directory.  It's a lot easier split up the
                     44: programs than to deal with the problem.  Most of the agony comes from making
1.36      ross       45: the "obj" directory stuff work right, not because we switched to a new version
1.1       cgd        46: of make.  So, don't get mad at us, figure out a better way to handle multiple
                     47: architectures so we can quit using the symbolic link stuff.  (Imake doesn't
                     48: count.)
                     49:
                     50: The file .depend in the source directory is expected to contain dependencies
                     51: for the source files.  This file is read automatically by make after reading
                     52: the Makefile.
                     53:
                     54: The variable DESTDIR works as before.  It's not set anywhere but will change
                     55: the tree where the file gets installed.
                     56:
                     57: The profiled libraries are no longer built in a different directory than
                     58: the regular libraries.  A new suffix, ".po", is used to denote a profiled
1.21      christos   59: object, and ".so" denotes a shared (position-independent) object.
                     60:
1.45    ! lukem      61: The following variables that control how things are made/installed that
        !            62: are not set by default. These should not be set by Makefiles; they're
        !            63: for the user to define in /etc/mk.conf or on the make(1) command line:
1.21      christos   64:
1.45    ! lukem      65: BUILD          If defined, 'make install' checks that the targets in the
        !            66:                source directories are up-to-date and remakes them if they
1.21      christos   67:                 are out of date, instead of blindly trying to install
                     68:                 out of date or non-existant targets.
                     69:
1.45    ! lukem      70: UPDATE                 If defined, 'make install' only installs targets that are
        !            71:                more recently modified in the source directories that their
        !            72:                installed counterparts.
        !            73:
        !            74: MKCATPAGES     If "no", don't build or install the catman pages.
        !            75:
        !            76: MKDOC          If "no", don't build or install the documentation.
        !            77:
        !            78: MKLINKLIB      If "no", act as "MKPICINSTALL=no MKPROFILE=no".
        !            79:                Also:
        !            80:                        - don't install the .a libraries
        !            81:                        - don't install _pic.a libraries on PIC systems
        !            82:                        - don't build .a libraries on PIC systems
        !            83:                        - don't install the .so symlink on ELF systems
        !            84:                I.e, only install the shared library (and the .so.major
        !            85:                symlink on ELF).
        !            86:
        !            87: MKLINT         If "no", don't build or install the lint libraries.
        !            88:
        !            89: MKMAN          If "no", don't build or install the man or catman pages.
        !            90:
        !            91: MKNLS          If "no", don't build or install the NLS files.
        !            92:
        !            93: MKOBJ          If "no", don't create objdirs.
        !            94:
        !            95: MKPIC          If "no", don't build or install shared libraries.
        !            96:
        !            97: MKPICINSTALL   If "no", don't install the *_pic.a libraries.
        !            98:
        !            99: MKPROFILE      If "no", don't build or install the profiling libraries.
        !           100:
        !           101: MKSHARE                If "no", act as "MKDOC=no MKMAN=no MKNLS=no".
        !           102:                I.e, don't build documentation, info pages, man pages,
        !           103:                NLS files, etc.
1.1       cgd       104:
                    105: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    106:
                    107: The include file <sys.mk> has the default rules for all makes, in the BSD
                    108: environment or otherwise.  You probably don't want to touch this file.
                    109:
                    110: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    111:
                    112: The include file <bsd.man.mk> handles installing manual pages and their
                    113: links.
                    114:
1.21      christos  115: It has a two targets:
1.1       cgd       116:
                    117:        maninstall:
1.21      christos  118:                Install the manual page sources and their links.
                    119:        catinstall:
                    120:                Install the preformatted manual pages and their links.
1.1       cgd       121:
                    122: It sets/uses the following variables:
                    123:
                    124: MANDIR         Base path for manual installation.
                    125:
                    126: MANGRP         Manual group.
                    127:
                    128: MANOWN         Manual owner.
                    129:
                    130: MANMODE                Manual mode.
                    131:
                    132: MANSUBDIR      Subdirectory under the manual page section, i.e. "/vax"
                    133:                or "/tahoe" for machine specific manual pages.
                    134:
1.15      cgd       135: MAN            The manual pages to be installed (use a .1 - .9 suffix).
1.1       cgd       136:
1.15      cgd       137: MLINKS         List of manual page links (using a .1 - .9 suffix).  The
1.1       cgd       138:                linked-to file must come first, the linked file second,
                    139:                and there may be multiple pairs.  The files are soft-linked.
                    140:
                    141: The include file <bsd.man.mk> includes a file named "../Makefile.inc" if
                    142: it exists.
                    143:
                    144: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    145:
1.17      thorpej   146: The include file <bsd.own.mk> contains source tree configuration parameters,
                    147: such as the owners, groups, etc. for both manual pages and binaries, and
                    148: a few global "feature configuration" parameters.
1.1       cgd       149:
                    150: It has no targets.
                    151:
1.29      cjs       152: To get system-specific configuration parameters, bsd.own.mk will try to
                    153: include the file specified by the "MAKECONF" variable.  If MAKECONF is not
                    154: set, or no such file exists, the system make configuration file, /etc/mk.conf
                    155: is included.  These files may define any of the variables described below.
1.17      thorpej   156:
                    157: bsd.own.mk sets the following variables, if they are not already defined
                    158: (defaults are in brackets):
1.15      cgd       159:
1.21      christos  160:
                    161:
1.15      cgd       162: BSDSRCDIR      The real path to the system sources, so that 'make obj'
                    163:                will work correctly. [/usr/src]
                    164:
                    165: BSDOBJDIR      The real path to the system 'obj' tree, so that 'make obj'
                    166:                will work correctly. [/usr/obj]
                    167:
1.34      lukem     168: BINGRP         Binary group. [wheel]
1.15      cgd       169:
1.34      lukem     170: BINOWN         Binary owner. [root]
1.15      cgd       171:
                    172: BINMODE                Binary mode. [555]
                    173:
                    174: NONBINMODE     Mode for non-executable files. [444]
                    175:
                    176: MANDIR         Base path for manual installation. [/usr/share/man/cat]
                    177:
1.34      lukem     178: MANGRP         Manual group. [wheel]
1.15      cgd       179:
1.34      lukem     180: MANOWN         Manual owner. [root]
1.15      cgd       181:
                    182: MANMODE                Manual mode. [${NONBINMODE}]
                    183:
1.21      christos  184: MANINSTALL     Manual installation type: maninstall, catinstall, or both
                    185:
1.15      cgd       186: LIBDIR         Base path for library installation. [/usr/lib]
                    187:
                    188: LINTLIBDIR     Base path for lint(1) library installation. [/usr/libdata/lint]
                    189:
                    190: LIBGRP         Library group. [${BINGRP}]
                    191:
                    192: LIBOWN         Library owner. [${BINOWN}]
                    193:
                    194: LIBMODE                Library mode. [${NONBINMODE}]
                    195:
                    196: DOCDIR         Base path for system documentation (e.g. PSD, USD, etc.)
                    197:                installation. [/usr/share/doc]
                    198:
1.34      lukem     199: DOCGRP         Documentation group. [wheel]
1.15      cgd       200:
1.34      lukem     201: DOCOWN         Documentation owner. [root]
1.15      cgd       202:
                    203: DOCMODE                Documentation mode. [${NONBINMODE}]
                    204:
                    205: NLSDIR         Base path for National Language Support files installation.
                    206:                [/usr/share/nls]
1.1       cgd       207:
1.34      lukem     208: NLSGRP         National Language Support files group. [wheel]
1.1       cgd       209:
1.34      lukem     210: NLSOWN         National Language Support files owner. [root]
1.1       cgd       211:
1.15      cgd       212: NLSMODE                National Language Support files mode. [${NONBINMODE}]
1.1       cgd       213:
1.32      mikel     214: STRIPFLAG      The flag passed to the install program to cause the binary
1.1       cgd       215:                to be stripped.  This is to be used when building your
                    216:                own install script so that the entire system can be made
1.15      cgd       217:                stripped/not-stripped using a single knob. [-s]
1.1       cgd       218:
1.2       cgd       219: COPY           The flag passed to the install program to cause the binary
                    220:                to be copied rather than moved.  This is to be used when
                    221:                building our own install script so that the entire system
                    222:                can either be installed with copies, or with moves using
1.15      cgd       223:                a single knob. [-c]
                    224:
1.17      thorpej   225: Additionally, the following variables may be set by bsd.own.mk or in a
                    226: make configuration file to modify the behaviour of the system build
                    227: process (default values are in brackets along with comments, if set by
                    228: bsd.own.mk):
1.15      cgd       229:
                    230: EXPORTABLE_SYSTEM
                    231:                Do not build /usr/src/domestic, even if it is present.
1.2       cgd       232:
1.15      cgd       233: SKEY           Compile in support for S/key authentication. [yes, set
                    234:                unconditionally]
                    235:
                    236: KERBEROS       Compile in support for Kerberos 4 authentication.
                    237:
                    238: KERBEROS5      Compile in support for Kerberos 5 authentication.
                    239:
                    240: MANZ           Compress manual pages at installation time.
                    241:
                    242: SYS_INCLUDE    Copy or symlink kernel include files into /usr/include.
                    243:                Possible values are "symlinks" or "copies" (which is
                    244:                the same as the variable being unset).
1.1       cgd       245:
1.15      cgd       246: NOPROFILE      Do not build profiled versions of system libraries
1.1       cgd       247:
1.15      cgd       248: NOPIC          Do not build PIC versions of system libraries, and
                    249:                do not build shared libraries.  [set if ${MACHINE_ARCH}
1.45    ! lukem     250:                is "sparc64", unset otherwise.]
1.1       cgd       251:
1.40      perry     252: NOLINT         Do not build lint libraries.
1.33      jonathan  253:
1.38      simonb    254: OBJECT_FMT     Object file format. [set to "ELF" on  ports that use
1.33      jonathan  255:                ELF -- currently if ${MACHINE_ARCH} is "alpha", "mips"
                    256:                or "powerpc" or  set to "a.out" on other ports].
                    257:
1.1       cgd       258:
1.17      thorpej   259: bsd.own.mk is generally useful when building your own Makefiles so that
1.1       cgd       260: they use the same default owners etc. as the rest of the tree.
                    261:
                    262: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    263:
                    264: The include file <bsd.prog.mk> handles building programs from one or
                    265: more source files, along with their manual pages.  It has a limited number
                    266: of suffixes, consistent with the current needs of the BSD tree.
                    267:
1.16      jtc       268: It has eight targets:
1.1       cgd       269:
                    270:        all:
                    271:                build the program and its manual page
                    272:        clean:
                    273:                remove the program, any object files and the files a.out,
1.24      mikel     274:                Errs, errs, mklog, and ${PROG}.core.
1.1       cgd       275:        cleandir:
                    276:                remove all of the files removed by the target clean, as
                    277:                well as .depend, tags, and any manual pages.
1.42      lukem     278:                `distclean' is a synonym for `cleandir'.
1.1       cgd       279:        depend:
                    280:                make the dependencies for the source files, and store
                    281:                them in the file .depend.
1.16      jtc       282:        includes:
                    283:                install any header files.
1.1       cgd       284:        install:
                    285:                install the program and its manual pages; if the Makefile
                    286:                does not itself define the target install, the targets
                    287:                beforeinstall and afterinstall may also be used to cause
                    288:                actions immediately before and after the install target
                    289:                is executed.
                    290:        lint:
                    291:                run lint on the source files
                    292:        tags:
                    293:                create a tags file for the source files.
                    294:
                    295: It sets/uses the following variables:
                    296:
                    297: BINGRP         Binary group.
                    298:
                    299: BINOWN         Binary owner.
                    300:
                    301: BINMODE                Binary mode.
                    302:
                    303: CLEANFILES     Additional files to remove for the clean and cleandir targets.
                    304:
                    305: COPTS          Additional flags to the compiler when creating C objects.
1.35      lukem     306:
                    307: CPPFLAGS       Additional flags to the C pre-processor
1.1       cgd       308:
                    309: LDADD          Additional loader objects.  Usually used for libraries.
                    310:                For example, to load with the compatibility and utility
                    311:                libraries, use:
                    312:
1.5       jtc       313:                        LDADD+=-lutil -lcompat
1.1       cgd       314:
                    315: LDFLAGS                Additional loader flags.
                    316:
                    317: LINKS          The list of binary links; should be full pathnames, the
                    318:                linked-to file coming first, followed by the linked
                    319:                file.  The files are hard-linked.  For example, to link
                    320:                /bin/test and /bin/[, use:
                    321:
                    322:                        LINKS=  ${DESTDIR}/bin/test ${DESTDIR}/bin/[
1.19      perry     323:
                    324: SYMLINKS       The list of symbolic links; should be full pathnames.
1.20      perry     325:                 Syntax is identical to LINKS. Note that DESTDIR is not
                    326:                automatically included in the link.
1.1       cgd       327:
1.15      cgd       328: MAN            Manual pages (should end in .1 - .9).  If no MAN variable is
1.8       cgd       329:                defined, "MAN=${PROG}.1" is assumed.
1.1       cgd       330:
                    331: PROG           The name of the program to build.  If not supplied, nothing
                    332:                is built.
                    333:
1.21      christos  334: PROGNAME       The name that the above program will be installed as, if
                    335:                different from ${PROG}.
                    336:
1.37      tv        337: SRCS           List of source files to build the program.  If SRCS is not
1.1       cgd       338:                defined, it's assumed to be ${PROG}.c.
                    339:
                    340: DPADD          Additional dependencies for the program.  Usually used for
                    341:                libraries.  For example, to depend on the compatibility and
                    342:                utility libraries use:
                    343:
1.5       jtc       344:                        DPADD+=${LIBCOMPAT} ${LIBUTIL}
1.1       cgd       345:
                    346:                The following libraries are predefined for DPADD:
                    347:
1.21      christos  348:                LIBCRT0?=       ${DESTDIR}/usr/lib/crt0.o
                    349:                LIBC?=          ${DESTDIR}/usr/lib/libc.a
                    350:                LIBC_PIC?=      ${DESTDIR}/usr/lib/libc_pic.a
                    351:                LIBCOMPAT?=     ${DESTDIR}/usr/lib/libcompat.a
                    352:                LIBCRYPT?=      ${DESTDIR}/usr/lib/libcrypt.a
                    353:                LIBCURSES?=     ${DESTDIR}/usr/lib/libcurses.a
                    354:                LIBDBM?=        ${DESTDIR}/usr/lib/libdbm.a
                    355:                LIBDES?=        ${DESTDIR}/usr/lib/libdes.a
                    356:                LIBEDIT?=       ${DESTDIR}/usr/lib/libedit.a
                    357:                LIBGCC?=        ${DESTDIR}/usr/lib/libgcc.a
                    358:                LIBGNUMALLOC?=  ${DESTDIR}/usr/lib/libgnumalloc.a
                    359:                LIBKDB?=        ${DESTDIR}/usr/lib/libkdb.a
                    360:                LIBKRB?=        ${DESTDIR}/usr/lib/libkrb.a
                    361:                LIBKVM?=        ${DESTDIR}/usr/lib/libkvm.a
                    362:                LIBL?=          ${DESTDIR}/usr/lib/libl.a
                    363:                LIBM?=          ${DESTDIR}/usr/lib/libm.a
                    364:                LIBMP?=         ${DESTDIR}/usr/lib/libmp.a
1.25      christos  365:                LIBNTP?=        ${DESTDIR}/usr/lib/libntp.a
1.21      christos  366:                LIBPC?=         ${DESTDIR}/usr/lib/libpc.a
                    367:                LIBPCAP?=       ${DESTDIR}/usr/lib/libpcap.a
                    368:                LIBPLOT?=       ${DESTDIR}/usr/lib/libplot.a
1.26      kleink    369:                LIBPOSIX?=      ${DESTDIR}/usr/lib/libposix.a
1.21      christos  370:                LIBRESOLV?=     ${DESTDIR}/usr/lib/libresolv.a
                    371:                LIBRPCSVC?=     ${DESTDIR}/usr/lib/librpcsvc.a
                    372:                LIBSKEY?=       ${DESTDIR}/usr/lib/libskey.a
                    373:                LIBTERMCAP?=    ${DESTDIR}/usr/lib/libtermcap.a
                    374:                LIBTELNET?=     ${DESTDIR}/usr/lib/libtelnet.a
                    375:                LIBUTIL?=       ${DESTDIR}/usr/lib/libutil.a
                    376:                LIBWRAP?=       ${DESTDIR}/usr/lib/libwrap.a
                    377:                LIBY?=          ${DESTDIR}/usr/lib/liby.a
                    378:                LIBZ?=          ${DESTDIR}/usr/lib/libz.a
                    379:
1.1       cgd       380:
                    381: SHAREDSTRINGS  If defined, a new .c.o rule is used that results in shared
1.12      christos  382:                strings, using xstr(1). Note that this will not work with
                    383:                parallel makes.
1.1       cgd       384:
                    385: STRIP          The flag passed to the install program to cause the binary
                    386:                to be stripped.
                    387:
                    388: SUBDIR         A list of subdirectories that should be built as well.
                    389:                Each of the targets will execute the same target in the
                    390:                subdirectories.
                    391:
1.21      christos  392: SCRIPTS                A list of interpreter scripts [file.{sh,csh,pl,awk,...}].
                    393:                These are installed exactly like programs.
                    394:
                    395: SCRIPTSNAME    The name that the above program will be installed as, if
                    396:                different from ${SCRIPTS}. These can be further specialized
                    397:                by setting SCRIPTSNAME_<script>.
                    398:
                    399: FILES          A list of files to install. The installation is controlled
                    400:                by the FILESNAME, FILESOWN, FILESGRP, FILESMODE, FILESDIR
                    401:                variables that can be further specialized by FILES<VAR>_<file>
                    402:
1.1       cgd       403: The include file <bsd.prog.mk> includes the file named "../Makefile.inc"
                    404: if it exists, as well as the include file <bsd.man.mk>.
                    405:
                    406: Some simple examples:
                    407:
                    408: To build foo from foo.c with a manual page foo.1, use:
                    409:
                    410:        PROG=   foo
                    411:
                    412:        .include <bsd.prog.mk>
                    413:
                    414: To build foo from foo.c with a manual page foo.2, add the line:
                    415:
1.9       cgd       416:        MAN=    foo.2
1.1       cgd       417:
                    418: If foo does not have a manual page at all, add the line:
                    419:
                    420:        NOMAN=  noman
                    421:
                    422: If foo has multiple source files, add the line:
                    423:
                    424:        SRCS=   a.c b.c c.c d.c
                    425:
                    426: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    427:
                    428: The include file <bsd.subdir.mk> contains the default targets for building
1.16      jtc       429: subdirectories.  It has the same eight targets as <bsd.prog.mk>: all,
                    430: clean, cleandir, depend, includes, install, lint, and tags.  For all of
                    431: the directories listed in the variable SUBDIRS, the specified directory
                    432: will be visited and the target made.  There is also a default target which
                    433: allows the command "make subdir" where subdir is any directory listed in
                    434: the variable SUBDIRS.
1.21      christos  435:
                    436: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    437:
1.23      christos  438: The include file <bsd.links.mk> handles the LINKS and SYMLINKS variables
                    439: and is included from from bsd.lib.mk and bsd.prog.mk.
                    440:
                    441: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    442:
                    443: The include file <bsd.files.mk> handles the FILES variables and is included
                    444: from bsd.lib.mk and bsd.prog.mk.
1.21      christos  445:
                    446: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    447:
1.29      cjs       448: The include file <bsd.inc.mk> defines the includes target and uses two
                    449: variables:
1.21      christos  450:
1.29      cjs       451: INCS   The list of include files
1.21      christos  452:
1.29      cjs       453: INCSDIR        The location to install the include files.
1.39      cgd       454:
                    455: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    456:
                    457: The include file <bsd.kinc.mk> defines the many targets (includes,
                    458: subdirectories, etc.), and is used by kernel makefiles to handle
                    459: include file installation.  It is intended to be included alone, by
                    460: kernel Makefiles.  Please see bsd.kinc.mk for more details, and keep
                    461: the documentation in that file up to date.
1.13      christos  462:
                    463: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    464:
                    465: The include file <bsd.sys.mk> is used by <bsd.prog.mk> and
1.14      cgd       466: <bsd.lib.mk>.  It contains overrides that are used when building
                    467: the NetBSD source tree.  For instance, if "PARALLEL" is defined by
                    468: the program/library Makefile, it includes a set of rules for lex and
                    469: yacc that allow multiple lex and yacc targets to be built in parallel.
1.1       cgd       470:
                    471: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                    472:
                    473: The include file <bsd.lib.mk> has support for building libraries.  It has
1.16      jtc       474: the same eight targets as <bsd.prog.mk>: all, clean, cleandir, depend,
1.44      erh       475: includes, install, lint, and tags.  Additionally, it has a checkver target
                    476: which checks for installed shared object libraries whose version is greater
                    477: that the version of the source. It has a limited number of suffixes,
1.16      jtc       478: consistent with the current needs of the BSD tree.
1.1       cgd       479:
                    480: It sets/uses the following variables:
1.10      cgd       481:
                    482: LIB            The name of the library to build.
1.1       cgd       483:
                    484: LIBDIR         Target directory for libraries.
                    485:
                    486: LINTLIBDIR     Target directory for lint libraries.
                    487:
                    488: LIBGRP         Library group.
                    489:
                    490: LIBOWN         Library owner.
                    491:
                    492: LIBMODE                Library mode.
                    493:
                    494: LDADD          Additional loader objects.
                    495:
1.15      cgd       496: MAN            The manual pages to be installed (use a .1 - .9 suffix).
1.44      erh       497:
                    498: NOCHECKVER_<library>
                    499: NOCHECKVER     If set, disables checking for installed shared object
                    500:                libraries with versions greater than the source.  A
                    501:                particular library name, without the "lib" prefix, may
                    502:                be appended to the variable name to disable the check for
                    503:                only that library.
1.1       cgd       504:
                    505: SRCS           List of source files to build the library.  Suffix types
                    506:                .s, .c, and .f are supported.  Note, .s files are preferred
                    507:                to .c files of the same name.  (This is not the default for
                    508:                versions of make.)
                    509:
                    510: The include file <bsd.lib.mk> includes the file named "../Makefile.inc"
                    511: if it exists, as well as the include file <bsd.man.mk>.
                    512:
                    513: It has rules for building profiled objects; profiled libraries are
                    514: built by default.
                    515:
1.4       cgd       516: Libraries are ranlib'd when made.
1.30      agc       517:
                    518: =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

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