make¶

build targets from a Makefile in the current directory
NAME
    make - build targets from a Makefile in the current directory

SYNOPSIS
    make [target]

DESCRIPTION
    Reads a file named `Makefile` in the current directory, builds `target`
    (or the first target in the file if none is given), and runs its recipe.
    make is a shell built-in, not a /bin program.

    A Makefile is a sequence of rules:

        target: prereq1 prereq2
        <TAB>recipe line 1
        <TAB>recipe line 2

    A rule starts in column 0 with the target name, a colon, then zero or more
    space-separated prerequisites. The lines below it that begin with a TAB are
    the recipe -- ordinary shell command lines (built-ins, /bin programs,
    redirection, pipes). Blank lines and lines starting with `#` are ignored.

    make resolves prerequisites depth-first: every prerequisite is built before
    the target that needs it, and a prerequisite shared by several targets is
    built only once. A prerequisite that has no rule of its own is assumed to
    exist already (e.g. a source file). A prerequisite cycle, or nesting deeper
    than 15, is reported as an error.

    There are no timestamps (P8XFS has no mtimes), so make ALWAYS rebuilds --
    there is no up-to-date check. Recipes run in the current directory, so their
    paths are directory-relative.

    Conventionally each source directory under /src carries a Makefile with an
    `all` target (build everything), a `clean` target (delete the build
    outputs), and an `install` target (publish the built binaries to /bin).

EXAMPLES
    make                 build the first target (usually `all`)
    make pwd             build just the `pwd` target
    make clean           run the `clean` target

    Rebuild a command on the machine and put it on PATH:

        cd /src/commands/c
        make pwd             cc pwd.c >T.ASM ; asm T.ASM bin/pwd.bin
        make install         cp the built bin/*.bin to /bin

DIAGNOSTICS
    make: no Makefile                        no Makefile in the current directory
    make: no rule to make target NAME        NAME is not a target and has no file
    make: prerequisite cycle (or too deep)   a rule depends on itself (directly
                                             or through a chain), or nesting > 15

SEE ALSO
    sh, cc, asm, cd, run