jdk8-mips64-public: make/README.pre-components@55b2666e52e1

6728161: Add SKIP_BOOT_CYCLE feature to create boot jdk and use it during build
Reviewed-by: tbell

     1 README-pre-components:

     2 ---------------------

     3 Current pre-components are langtools, jaxws, jaxp, and corba.

     5 Pre-components can use ant to build but must have a make/Makefile for

     6 building (a GNU make Makefile).

     7 All ant knowledge is being isolated in the workspaces that use it.

     9 Also for various reasons it is nice to have a Makefile wrapper over the

    10 running of ant, but in general having to do

    11 anything with shell commands is much easier to do in a Makefile

    12 than in an ant script.

    14 The make/makefile rules are:

    16  Variables:

    17   ALT_BOOTDIR           The jdk home to use to build, if provided

    18   ALT_LANGTOOLS_DIST    The dist area from a langtools build to use, if provided

    19   ALT_OUTPUTDIR         Parent dir of build and dist directories, if provided

    20   VARIANT               If DBG, debug build, if OPT, optimized build

    21   TARGET_CLASS_VERSION  The classfile version number (currently 5)

    22   ANT_HOME              Home of ant to use, if provided

    23   FINDBUGS_HOME         Home of findbugs to use, if provided

    24   QUIET                 If defined, be quiet

    25   VERBOSE               If defined, be verbose

    26   JDK_VERSION           Version being built

    27   FULL_VERSION          Full version string for this jdk build

    28   MILESTONE             fcs, beta, internal or empty

    29   BUILD_NUMBER          Number of the jdk build

    30   JPRT_ARCHIVE_BUNDLE   Path to zip bundle to create for JPRT

    32  Targets:

    33   all                   Build everything, including dist

    34   build                 Build build area

    35   clean                 Clean up

    36   clobber               Same as clean (don't ask)

    37   sanity                Perform any sanity checks, exit non-zero if errors

    38   jprt_build_product    JPRT product build, zip results into JPRT_ARCHIVE_BUNDLE

    39   jprt_build_debug      JPRT debug build, zip results into JPRT_ARCHIVE_BUNDLE

    40   jprt_build_fastdebug  JPRT fastdebug build, zip results into JPRT_ARCHIVE_BUNDLE

    42 Then of course we expect a dist/lib/classes.jar, dist/lib/src.zip and dist/lib/bin.zip.

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