Porting crib sheet for an imaginary port to FreeBSD 3.x:

Directories and files to create:

    libs/m3core/src/C/FreeBSD3
    libs/m3core/src/Csupport/FreeBSD3
    libs/m3core/src/runtime/FreeBSD3
    libs/m3core/src/unix/freebsd-3
    m3config/src/FreeBSD3

Files to edit:

    language/modula3/m3compiler/m3middle/src/Target.m3
    language/modula3/m3tools/m3gdb/gdb/ltconfig
    libs/libm3/src/random/m3makefile
    libs/m3core/src/float/m3makefile
    libs/m3core/src/runtime/m3makefile
    libs/m3core/src/time/POSIX/m3makefile
    libs/m3core/src/unix/m3makefile
    m3config/src/COMMON

To disable VM-synchronized GC:

    libs/m3core/src/runtime/FreeBSD3/RTMachine.i3
        Set VMHeap = FALSE

    libs/m3core/src/runtime/FreeBSD3/RTHeapDepC.c
        #ifdef out most of the file.

To add custom options for the bootstrap:

    language/modula3/m3compiler/m3bootstrap/src/m3makefile
        Search for ALPHA_OSF to see examples.

Special gcc config options:

    language/modula3/m3compiler/m3cc/src/m3makefile

GCC configure script:

    language/modula3/m3compiler/m3cc/gcc/configure

Other stuff:

    You must build and install the new m3middle, m3build, and m3ship
    before you can make a bootstrap.

    Use gmake.

    GCC build wants byacc.  Sometimes you can finesse this in the M3
    config file with something like M3CC_MAKE = ["gmake", "BISON=yacc"].

    May need to define NDEBUG when building m3cgc1 to avoid problems with
    "language/modula3/m3compiler/m3cc/gcc/assert.h".