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# @(#) $Revision: 4.17 $ $Source: /judy/make_includes/README $
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# This tree contains platform-specific and flavor-specific makefile fragments
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# for inclusion by the judy/src/makefile.
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# Quick build examples:
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# PLATFORM=linux_ia32 FLAVOR=product make # on Linux, no makelog.
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# PLATFORM=hpux_ipf FLAVOR=cov makelog
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platform..mk default platform; includes one of the other files
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platform.hpux_pa.mk PLATFORM=hpux_pa (on PA-RISC)
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platform.hpux_ipf.mk PLATFORM=hpux_ipf
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platform.linux_ia32.mk PLATFORM=linux_ia32
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platform.bsd_ia32.mk PLATFORM=*BSD_ia32
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platform.alpha_64.mk PLATFORM=alpha_64
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platform.linux_ipf.mk PLATFORM=linux_ipf
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platform.win_ia32.mk PLATFORM=win_ia32 # for building with MKS.
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platform.win_ipf.mk PLATFORM=win_ipf # for building with MKS.
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flavor..mk default flavor; includes one of the other files
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flavor.product.mk FLAVOR=product; no debug, no assertions, etc.
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flavor.cov.mk FLAVOR=cov; same as product, but with C-Cover turned on
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flavor.debug.mk FLAVOR=debug; debuggable, assertions, etc.
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# HOW TO BUILD JUDY FILES:
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# MAKEFILE: Judy uses a macro-driven global make(1) makefile. Macro-driven
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# means some variables are set according to the values of environment
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# parameters. Global means all sources and targets are known to a single
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# global makefile, although it might eventually grow large, for optimum
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# dependency management and the simplest makefile structure. (Ref: "Recursive
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# Make Considered Harmful", found 2/2000 at
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# <http://www.canb.auug.org.au/~millerp/rmch/recu-make-cons-harm.html>)
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# MACROS: The global top-level makefile includes files from this directory
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# $PLATFORM defaults if unset; values are in platform.*.mk above
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# $FLAVOR defaults if unset; values are in flavor.*.mk above
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# You can simply do a "make" with no settings, or for example:
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# ALL/SPECIFIC TARGETS: By default, make with no arguments does a "make all".
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# You can use the "lib" target ("make lib") to construct only libJudy.a and its
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# dependees. Other specific targets can be named, but you must know their
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# paths to name them; see below about "source-pure" and "constructed files
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# tree". In general, the makefile is as smart as possible about dependencies
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# and only rebuilds that which is out of date. Use "make clobber" for a fresh
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# start (specific to a given flavor).
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# LOGGING: Also consider the use of the local makelog command, a drop-in
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# wrapper replacement for make, that you invoke instead of make, that does nice
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# summarizing and detailed logging. The Judy makefile is arranged to work well
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# BE-PURE: The Judy build is "BE-pure" in that it writes nothing to the build
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# environment, that is, nothing above the top of the source tree.
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# SOURCE-PURE: The Judy build is "source-pure" in that it writes no
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# constructed files to the source tree except under flavor-specific
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# subdirectories. Hence you can build multiple flavors from the same source
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# tree. However, you cannot run parallel multi-flavor compilations because of
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# temporary files dropped in the source tree, say by cc(1).
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# CONSTRUCTED FILES TREE: For more on the structure of the flavor-specific
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# constructed files, do a full make and then study the tree, or look at the
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# definitions in the makefile.
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# BUILD ID: The Judy makefile contains support for always rebuilding a build
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# ID file that is used to insert a build ID whatstring/identstring into
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# constructed delivered objects. So don't worry about this being reconstructed
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# every time you run make.
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# UNBUILDING: The use of make(1) means "unbuilding" is not known explicitly by
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# the tool, so instead there are "clean" and "clobber" targets.
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# COMPILATION OPTIONS:
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# EXTCCOPTS: Add options to compilation commands via EXTCCOPTS, such as:
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# EXTCCOPTS='-DTRACEJP' make
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# CCPRE: Alter compilation commands produced by this makefile by putting
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# "CCPRE=<command>" on the make command line. This is supported by
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# make_includes/*.mk files. See tool/ccpre for an example.
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# Note: flavor.cov.mk forces the used of tool/ccpre; see that *mk file.
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# Warning: If you get a core dump from make when you do this, try something
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# like this: "CCPRE='echo;ccpre' ..." Apparently 10.20 make gets ill if the
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# first command in a script is lengthy (not sure).
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# * At least for now, the Judy makefile is no longer "top level", because it
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# lives in judy/src, which is now down one level. It delivers some files
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# drawn from a higher level in the Judy tree than the source directory.
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# * Nothing in the makefile explicitly depends on the makefile itself, though
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# anything might, but making everything depend on it is too coarse. Use
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# appropriate wisdom.
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# * For building object files from common source files, build directly using cc
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# -D, not by running unifdef first, to support clean source debugging. But
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# for calling lint, use unifdef first to create *.c files, and run lint on
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# those, so as to do single lint runs of multiple *.c files.
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# * On 010301 we decided not to ship JudyNL for the 11i release because we are
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# not sure the API is solid enough, and there was not much interest shown in
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# using it in the Judy III version, unlike JudySL. Also, Judy2L was of
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# course not documented yet. So both, along with the manual entries, are
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# commented out for now in this makefile, but only at the critical points
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# required to keep them from going into the libraries or docs.
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make_includes/README
