Provided by: pmake_1.111-3.2_amd64 bug

NAME

     pmake — maintain program dependencies

SYNOPSIS

     pmake [-BeikNnqrstWX] [-D variable] [-d flags] [-f makefile] [-I directory] [-J private]
           [-j max_jobs] [-m directory] [-T file] [-V variable] [variable=value] [target ...]

DESCRIPTION

     pmake is a program designed to simplify the maintenance of other programs.  Its input is a
     list of specifications as to the files upon which programs and other files depend.  If the
     file ‘makefile’ exists, it is read for this list of specifications.  If it does not exist,
     the file ‘Makefile’ is read.  If the file ‘.depend’ exists, it is read (see mkdep(1)).

     This manual page is intended as a reference document only.  For a more thorough description
     of pmake and makefiles, please refer to Make - A Tutorial.

     The options are as follows:

     -B      Try to be backwards compatible by executing a single shell per command and by
             executing the commands to make the sources of a dependency line in sequence.

     -D variable
             Define variable to be 1, in the global context.

     -d flags
             Turn on debugging, and specify which portions of pmake are to print debugging
             information.  Flags is one or more of the following:

             A       Print all possible debugging information; equivalent to specifying all of
                     the debugging flags.

             a       Print debugging information about archive searching and caching.

             c       Print debugging information about conditional evaluation.

             d       Print debugging information about directory searching and caching.

             e       Print debugging information about failed commands and targets.

             f       Print debugging information about loop evaluation.

             g1      Print the input graph before making anything.

             g2      Print the input graph after making everything, or before exiting on error.

             g3      Print the input graph before exiting on error.

             j       Print debugging information about running multiple shells.

             m       Print debugging information about making targets, including modification
                     dates.

             n       Don't delete the temporary command scripts created in /tmp when running
                     commands.  These are created via mkstemp(3) and have names of the form
                     /tmp/makeXXXXX.  NOTE: This can create many file in /tmp so use with care.

             s       Print debugging information about suffix-transformation rules.

             t       Print debugging information about target list maintenance.

             v       Print debugging information about variable assignment.

             x       Run shell commands with -x so the actual commands are printed as they are
                     executed.

     -e      Specify that environment variables override macro assignments within makefiles.

     -f makefile
             Specify a makefile to read instead of the default ‘makefile’.  If makefile is ‘-’,
             standard input is read.  Multiple makefiles may be specified, and are read in the
             order specified.

     -I directory
             Specify a directory in which to search for makefiles and included makefiles.  The
             system makefile directory (or directories, see the -m option) is automatically
             included as part of this list.

     -i      Ignore non-zero exit of shell commands in the makefile.  Equivalent to specifying
             ‘-’ before each command line in the makefile.

     -J private
             This option should not be specified by the user.

             When the j option is in use in a recursive build, this option is passed by a make to
             child makes to allow all the make processes in the build to cooperate to avoid
             overloading the system.

     -j max_jobs
             Specify the maximum number of jobs that pmake may have running at any one time.
             Turns compatibility mode off, unless the B flag is also specified.

     -k      Continue processing after errors are encountered, but only on those targets that do
             not depend on the target whose creation caused the error.

     -m directory
             Specify a directory in which to search for sys.mk and makefiles included via the
             ⟨file⟩-style include statement.  The -m option can be used multiple times to form a
             search path.  This path will override the default system include path:
             /usr/share/mk.  Furthermore the system include path will be appended to the search
             path used for "file"-style include statements (see the -I option).

             If a file or directory name in the -m argument (or the MAKESYSPATH environment
             variable) starts with the string ".../" then pmake will search for the specified
             file or directory named in the remaining part of the argument string.  The search
             starts with the current directory of the Makefile and then works upward towards the
             root of the filesystem.  If the search is successful, then the resulting directory
             replaces the ".../" specification in the -m argument.  If used, this feature allows
             pmake to easily search in the current source tree for customized sys.mk files (e.g.,
             by using ".../mk/sys.mk" as an argument).

     -n      Display the commands that would have been executed, but do not actually execute them
             unless the target depends on the .MAKE special source (see below).

     -N      Display the commands which would have been executed, but do not actually execute any
             of them; useful for debugging top-level makefiles without descending into
             subdirectories.

     -q      Do not execute any commands, but exit 0 if the specified targets are up-to-date and
             1, otherwise.

     -r      Do not use the built-in rules specified in the system makefile.

     -s      Do not echo any commands as they are executed.  Equivalent to specifying ‘@’ before
             each command line in the makefile.

     -T tracefile
             When used with the -j flag, append a trace record to tracefile for each job started
             and completed.

     -t      Rather than re-building a target as specified in the makefile, create it or update
             its modification time to make it appear up-to-date.

     -V variable
             Print pmake's idea of the value of variable, in the global context.  Do not build
             any targets.  Multiple instances of this option may be specified; the variables will
             be printed one per line, with a blank line for each null or undefined variable.  If
             variable contains a ‘$’ then the value will be expanded before printing.

     -W      Treat any warnings during makefile parsing as errors.

     -X      Don't export variables passed on the command line to the environment individually.
             Variables passed on the command line are still exported via the MAKEFLAGS
             environment variable.  This option may be useful on systems which have a small limit
             on the size of command arguments.

     variable=value
             Set the value of the variable variable to value.  Normally, all values passed on the
             command line are also exported to sub-makes in the environment.  The -X flag
             disables this behavior.  Variable assignments should follow options for POSIX
             compatibility but no ordering is enforced.

     There are seven different types of lines in a makefile: file dependency specifications,
     shell commands, variable assignments, include statements, conditional directives, for loops,
     and comments.

     In general, lines may be continued from one line to the next by ending them with a backslash
     (‘\’).  The trailing newline character and initial whitespace on the following line are
     compressed into a single space.

FILE DEPENDENCY SPECIFICATIONS

     Dependency lines consist of one or more targets, an operator, and zero or more sources.
     This creates a relationship where the targets ``depend'' on the sources and are usually
     created from them.  The exact relationship between the target and the source is determined
     by the operator that separates them.  The three operators are as follows:

     :     A target is considered out-of-date if its modification time is less than those of any
           of its sources.  Sources for a target accumulate over dependency lines when this
           operator is used.  The target is removed if pmake is interrupted.

     !     Targets are always re-created, but not until all sources have been examined and re-
           created as necessary.  Sources for a target accumulate over dependency lines when this
           operator is used.  The target is removed if pmake is interrupted.

     ::    If no sources are specified, the target is always re-created.  Otherwise, a target is
           considered out-of-date if any of its sources has been modified more recently than the
           target.  Sources for a target do not accumulate over dependency lines when this
           operator is used.  The target will not be removed if pmake is interrupted.

     Targets and sources may contain the shell wildcard values ‘?’, ‘*’, ‘[]’, and ‘{}’.  The
     values ‘?’, ‘*’, and ‘[]’ may only be used as part of the final component of the target or
     source, and must be used to describe existing files.  The value ‘{}’ need not necessarily be
     used to describe existing files.  Expansion is in directory order, not alphabetically as
     done in the shell.

SHELL COMMANDS

     Each target may have associated with it a series of shell commands, normally used to create
     the target.  Each of the commands in this script must be preceded by a tab.  While any
     target may appear on a dependency line, only one of these dependencies may be followed by a
     creation script, unless the ‘::’ operator is used.

     If the first characters of the command line are any combination of ‘@’, ‘+’, or ‘-’, the
     command is treated specially.  A ‘@’ causes the command not to be echoed before it is
     executed.  A ‘+’ causes the command to be executed even when -n is given.  This is similar
     to the effect of the .MAKE special source, except that the effect can be limited to a single
     line of a script.  A ‘-’ causes any non-zero exit status of the command line to be ignored.

VARIABLE ASSIGNMENTS

     Variables in make are much like variables in the shell, and, by tradition, consist of all
     upper-case letters.

   Variable assignment modifiers
     The five operators that can be used to assign values to variables are as follows:

     =       Assign the value to the variable.  Any previous value is overridden.

     +=      Append the value to the current value of the variable.

     ?=      Assign the value to the variable if it is not already defined.

     :=      Assign with expansion, i.e. expand the value before assigning it to the variable.
             Normally, expansion is not done until the variable is referenced.

     !=      Expand the value and pass it to the shell for execution and assign the result to the
             variable.  Any newlines in the result are replaced with spaces.

     Any white-space before the assigned value is removed; if the value is being appended, a
     single space is inserted between the previous contents of the variable and the appended
     value.

     Variables are expanded by surrounding the variable name with either curly braces (‘{}’) or
     parentheses (‘()’) and preceding it with a dollar sign (‘$’).  If the variable name contains
     only a single letter, the surrounding braces or parentheses are not required.  This shorter
     form is not recommended.

     Variable substitution occurs at two distinct times, depending on where the variable is being
     used.  Variables in dependency lines are expanded as the line is read.  Variables in shell
     commands are expanded when the shell command is executed.

   Variable classes
     The four different classes of variables (in order of increasing precedence) are:

     Environment variables
             Variables defined as part of pmake's environment.

     Global variables
             Variables defined in the makefile or in included makefiles.

     Command line variables
             Variables defined as part of the command line.

     Local variables
             Variables that are defined specific to a certain target.  The seven local variables
             are as follows:

             .ALLSRC   The list of all sources for this target; also known as ‘>’.

             .ARCHIVE  The name of the archive file.

             .IMPSRC   The name/path of the source from which the target is to be transformed
                       (the ``implied'' source); also known as ‘<’.

             .MEMBER   The name of the archive member.

             .OODATE   The list of sources for this target that were deemed out-of-date; also
                       known as ‘?’.

             .PREFIX   The file prefix of the file, containing only the file portion, no suffix
                       or preceding directory components; also known as ‘*’.

             .TARGET   The name of the target; also known as ‘@’.

             The shorter forms ‘@’, ‘?’, ‘<’, ‘>’, and ‘*’ are permitted for backward
             compatibility with historical makefiles and are not recommended.  The six variables
             ‘@F’, ‘@D’, ‘<F’, ‘<D’, ‘*F’, and ‘*D’ are permitted for compatibility with AT&T
             System V UNIX makefiles and are not recommended.

             Four of the local variables may be used in sources on dependency lines because they
             expand to the proper value for each target on the line.  These variables are
             ‘.TARGET’, ‘.PREFIX’, ‘.ARCHIVE’, and ‘.MEMBER’.

   Additional inbuilt variables
     In addition, pmake sets or knows about the following variables:

     $               A single dollar sign ‘$’, i.e.  ‘$$’ expands to a single dollar sign.

     .ALLTARGETS     The list of all targets encountered in the Makefile.  If evaluated during
                     Makefile parsing, lists only those targets encountered thus far.

     .CURDIR         A path to the directory where pmake was executed.  Refer to the description
                     of ‘PWD’ for more details.

     MAKE            The name that pmake was executed with (argv[0]).  For compatibily pmake also
                     sets .MAKE with the same value.  The preferred variable to use is the
                     environment variable MAKE because it is more compatible with other versions
                     of pmake and cannot be confused with the special target with the same name.

     MAKEFLAGS       The environment variable ‘MAKEFLAGS’ may contain anything that may be
                     specified on pmake's command line.  Anything specified on pmake's command
                     line is appended to the ‘MAKEFLAGS’ variable which is then entered into the
                     environment for all programs which pmake executes.

     .MAKEOVERRIDES  This variable is used to record the names of variables assigned to on the
                     command line, so that they may be exported as part of ‘MAKEFLAGS’.  This
                     behaviour can be disabled by assigning an empty value to ‘.MAKEOVERRIDES’
                     within a makefile.  Extra variables can be exported from a makefile by
                     appending their names to ‘.MAKEOVERRIDES’.  ‘MAKEFLAGS’ is re-exported
                     whenever ‘.MAKEOVERRIDES’ is modified.

     MAKE_PRINT_VAR_ON_ERROR
                     When pmake stops due to an error, it prints its name and the value of
                     ‘.CURDIR’ as well as the value of any variables named in
                     ‘MAKE_PRINT_VAR_ON_ERROR’.

     .newline        This variable is simply assigned a newline character as its value.  This
                     allows expansions using the :@ modifier to put a newline between iterations
                     of the loop rather than a space.  For example, the printing of
                     ‘MAKE_PRINT_VAR_ON_ERROR’ could be done as
                     ${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'${.newline}@}.

     .OBJDIR         A path to the directory where the targets are built.  Its value is
                     determined by trying to chdir(2) to the following directories in order and
                     using the first match:

                     1.   ${MAKEOBJDIRPREFIX}${.CURDIR}

                          (Only if ‘MAKEOBJDIRPREFIX’ is set in the environment or on the command
                          line.)

                     2.   ${MAKEOBJDIR}

                          (Only if ‘MAKEOBJDIR’ is set in the environment or on the command
                          line.)

                     3.   ${.CURDIR}/obj.${MACHINE}

                     4.   ${.CURDIR}/obj

                     5.   /usr/obj/${.CURDIR}

                     6.   ${.CURDIR}

                     Variable expansion is performed on the value before it's used, so
                     expressions such as
                           ${.CURDIR:C,^/usr/src,/var/obj,}
                     may be used.

                     ‘.OBJDIR’ may be modified in the makefile as a global variable.  In all
                     cases, pmake will chdir(2) to ‘.OBJDIR’ and set ‘PWD’ to that directory
                     before executing any targets.

     .PARSEDIR       A path to the directory of the current ‘Makefile’ being parsed.

     .PARSEFILE      The basename of the current ‘Makefile’ being parsed.  This variable and
                     ‘.PARSEDIR’ are both set only while the ‘Makefiles’ are being parsed.

     .PATH           A variable that represents the list of directories that pmake will search
                     for files.  The search list should be updated using the target ‘.PATH’
                     rather than the variable.

     PWD             Alternate path to the current directory.  pmake normally sets ‘.CURDIR’ to
                     the canonical path given by getcwd(3).  However, if the environment variable
                     ‘PWD’ is set and gives a path to the current directory, then pmake sets
                     ‘.CURDIR’ to the value of ‘PWD’ instead.  This behaviour is disabled if
                     ‘MAKEOBJDIRPREFIX’ is set or ‘MAKEOBJDIR’ contains a variable transform.
                     ‘PWD’ is set to the value of ‘.OBJDIR’ for all programs which pmake
                     executes.

   Variable modifiers
     Variable expansion may be modified to select or modify each word of the variable (where a
     ``word'' is white-space delimited sequence of characters).  The general format of a variable
     expansion is as follows:

           {variable[:modifier[:...]]}

     Each modifier begins with a colon, which may be escaped with a backslash (‘\’).  The
     supported modifiers are:

     :E   Replaces each word in the variable with its suffix.

     :H   Replaces each word in the variable with everything but the last component.

     :Mpattern
          Select only those words that match pattern.  The standard shell wildcard characters
          (‘*’, ‘?’, and ‘[]’) may be used.  The wildcard characters may be escaped with a
          backslash (‘\’).

     :Npattern
          This is identical to ‘:M’, but selects all words which do not match pattern.

     :O   Order every word in variable alphabetically.  To sort words in reverse order use the
          ‘:O:[-1..1]’ combination of modifiers.

     :Ox  Randomize words in variable.  The results will be different each time you are referring
          to the modified variable; use the assignment with expansion (‘:=’) to prevent such
          behaviour.  For example,

                LIST=                   uno due tre quattro
                RANDOM_LIST=            ${LIST:Ox}
                STATIC_RANDOM_LIST:=    ${LIST:Ox}

                all:
                        @echo "${RANDOM_LIST}"
                        @echo "${RANDOM_LIST}"
                        @echo "${STATIC_RANDOM_LIST}"
                        @echo "${STATIC_RANDOM_LIST}"
          may produce output similar to:

                quattro due tre uno
                tre due quattro uno
                due uno quattro tre
                due uno quattro tre

     :Q   Quotes every shell meta-character in the variable, so that it can be passed safely
          through recursive invocations of pmake.

     :R   Replaces each word in the variable with everything but its suffix.

     :tl  Converts variable to lower-case letters.

     :tsc
          Words in the variable are normally separated by a space on expansion.  This modifier
          sets the separator to the character c.  If c is omitted, then no separator is used.

     :tu  Converts variable to upper-case letters.

     :tW  Causes the value to be treated as a single word (possibly containing embedded white
          space).  See also ‘:[*]’.

     :tw  Causes the value to be treated as a sequence of words delimited by white space.  See
          also ‘:[@]’.

     :S/old_string/new_string/[1gW]
          Modify the first occurrence of old_string in the variable's value, replacing it with
          new_string.  If a ‘g’ is appended to the last slash of the pattern, all occurrences in
          each word are replaced.  If a ‘1’ is appended to the last slash of the pattern, only
          the first word is affected.  If a ‘W’ is appended to the last slash of the pattern,
          then the value is treated as a single word (possibly containing embedded white space).
          If old_string begins with a caret (‘^’), old_string is anchored at the beginning of
          each word.  If old_string ends with a dollar sign (‘$’), it is anchored at the end of
          each word.  Inside new_string, an ampersand (‘&’) is replaced by old_string (without
          any ‘^’ or ‘$’).  Any character may be used as a delimiter for the parts of the
          modifier string.  The anchoring, ampersand and delimiter characters may be escaped with
          a backslash (‘\’).

          Variable expansion occurs in the normal fashion inside both old_string and new_string
          with the single exception that a backslash is used to prevent the expansion of a dollar
          sign (‘$’), not a preceding dollar sign as is usual.

     :C/pattern/replacement/[1gW]
          The :C modifier is just like the :S modifier except that the old and new strings,
          instead of being simple strings, are a regular expression (see regex(3)) string pattern
          and an ed(1)-style string replacement.  Normally, the first occurrence of the pattern
          pattern in each word of the value is substituted with replacement.  The ‘1’ modifier
          causes the substitution to apply to at most one word; the ‘g’ modifier causes the
          substitution to apply to as many instances of the search pattern pattern as occur in
          the word or words it is found in; the ‘W’ modifier causes the value to be treated as a
          single word (possibly containing embedded white space).  Note that ‘1’ and ‘g’ are
          orthogonal; the former specifies whether multiple words are potentially affected, the
          latter whether multiple substitutions can potentially occur within each affected word.

     :T   Replaces each word in the variable with its last component.

     :u   Remove adjacent duplicate words (like uniq(1)).

     :?true_string:false_string
          If the variable (actually an expression; see below) evaluates to true, return as its
          value the true_string, otherwise return the false_string.

     :old_string=new_string
          This is the AT&T System V UNIX style variable substitution.  It must be the last
          modifier specified.  If old_string or new_string do not contain the pattern matching
          character % then it is assumed that they are anchored at the end of each word, so only
          suffixes or entire words may be replaced.  Otherwise % is the substring of old_string
          to be replaced in new_string.

          Variable expansion occurs in the normal fashion inside both old_string and new_string
          with the single exception that a backslash is used to prevent the expansion of a dollar
          sign (‘$’), not a preceding dollar sign as is usual.

     :@temp@string@
          This is the loop expansion mechanism from the OSF Development Environment (ODE) make.
          Unlike .for loops expansion occurs at the time of reference.  Assign temp to each word
          in the variable and evaluate string.  The ODE convention is that temp should start and
          end with a period.  For example.
                ${LINKS:@.LINK.@${LN} ${TARGET} ${.LINK.}@}

     :Unewval
          If the variable is undefined newval is the value.  If the variable is defined, the
          existing value is returned.  This is another ODE make feature.  It is handy for setting
          per-target CFLAGS for instance:
                ${_${.TARGET:T}_CFLAGS:U${DEF_CFLAGS}}
          If a value is only required if the variable is undefined, use:
                ${VAR:D:Unewval}

     :Dnewval
          If the variable is defined newval is the value.

     :L   The name of the variable is the value.

     :P   The path of the node which has the same name as the variable is the value.  If no such
          node exists or its path is null, then the name of the variable is used.

     :!cmd!
          The output of running cmd is the value.

     :sh  If the variable is non-empty it is run as a command and the output becomes the new
          value.

     ::=str
          The variable is assigned the value str after substitution.  This modifier and its
          variations are useful in obscure situations such as wanting to apply modifiers to .for
          loop iteration variables which won't work due to the way .for loops are implemented.
          These assignment modifiers always expand to nothing, so if appearing in a rule line by
          themselves should be preceded with something to keep pmake happy.  As in:

          use_foo: .USE
          .for i in ${.TARGET} ${.TARGET:R}.gz
                  @: ${t::=$i}
                  @echo t:R:T=${t:R:T}
          .endfor

          The ‘::’ helps avoid false matches with the AT&T System V UNIX style := modifier and
          since substitution always occurs the ::= form is vaguely appropriate.

     ::?=str
          As for ::= but only if the variable does not already have a value.

     ::+=str
          Append str to the variable.

     ::!=cmd
          Assign the output of cmd to the variable.

     :[range]
          Selects one or more words from the value, or performs other operations related to the
          way in which the value is divided into words.

          Ordinarily, a value is treated as a sequence of words delimited by white space.  Some
          modifiers suppress this behaviour, causing a value to be treated as a single word
          (possibly containing embedded white space).  An empty value, or a value that consists
          entirely of white-space, is treated as a single word.  For the purposes of the ‘:[]’
          modifier, the words are indexed both forwards using positive integers (where index 1
          represents the first word), and backwards using negative integers (where index -1
          represents the last word).

          The range is subjected to variable expansion, and the expanded result is then
          interpreted as follows:

          index  Selects a single word from the value.

          start..end
                 Selects all words from start to end, inclusive.  For example, ‘:[2..-1]’ selects
                 all words from the second word to the last word.  If start is greater than end,
                 then the words are output in reverse order.  For example, ‘:[-1..1]’ selects all
                 the words from last to first.

          *      Causes subsequent modifiers to treat the value as a single word (possibly
                 containing embedded white space).  Analogous to the effect of "$*" in Bourne
                 shell.

          0      Means the same as ‘:[*]’.

          @      Causes subsequent modifiers to treat the value as a sequence of words delimited
                 by white space.  Analogous to the effect of "$@" in Bourne shell.

          #      Returns the number of words in the value.

INCLUDE STATEMENTS, CONDITIONALS AND FOR LOOPS

     Makefile inclusion, conditional structures and for loops  reminiscent of the C programming
     language are provided in pmake.  All such structures are identified by a line beginning with
     a single dot (‘.’) character.  Files are included with either .includefile⟩ or .include
     "file".  Variables between the angle brackets or double quotes are expanded to form the file
     name.  If angle brackets are used, the included makefile is expected to be in the system
     makefile directory.  If double quotes are used, the including makefile's directory and any
     directories specified using the -I option are searched before the system makefile directory.
     For compatibility with other versions of pmake ‘include file ...’ is also accepted.  If the
     include statement is written as .-include or as .sinclude then errors locating and/or
     opening include files are ignored.

     Conditional expressions are also preceded by a single dot as the first character of a line.
     The possible conditionals are as follows:

     .undef variable
             Un-define the specified global variable.  Only global variables may be un-defined.

     .if [!]expression [operator expression ...]
             Test the value of an expression.

     .ifdef [!]variable [operator variable ...]
             Test the value of a variable.

     .ifndef [!]variable [operator variable ...]
             Test the value of a variable.

     .ifmake [!]target [operator target ...]
             Test the target being built.

     .ifnmake [!] target [operator target ...]
             Test the target being built.

     .else   Reverse the sense of the last conditional.

     .elif [!] expression [operator expression ...]
             A combination of ‘.else’ followed by ‘.if’.

     .elifdef [!]variable [operator variable ...]
             A combination of ‘.else’ followed by ‘.ifdef’.

     .elifndef [!]variable [operator variable ...]
             A combination of ‘.else’ followed by ‘.ifndef’.

     .elifmake [!]target [operator target ...]
             A combination of ‘.else’ followed by ‘.ifmake’.

     .elifnmake [!]target [operator target ...]
             A combination of ‘.else’ followed by ‘.ifnmake’.

     .endif  End the body of the conditional.

     The operator may be any one of the following:

     ||     Logical OR.

     &&     Logical AND; of higher precedence than “||”.

     As in C, pmake will only evaluate a conditional as far as is necessary to determine its
     value.  Parentheses may be used to change the order of evaluation.  The boolean operator ‘!’
     may be used to logically negate an entire conditional.  It is of higher precedence than
     ‘&&’.

     The value of expression may be any of the following:

     defined  Takes a variable name as an argument and evaluates to true if the variable has been
              defined.

     pmake    Takes a target name as an argument and evaluates to true if the target was
              specified as part of pmake's command line or was declared the default target
              (either implicitly or explicitly, see .MAIN) before the line containing the
              conditional.

     empty    Takes a variable, with possible modifiers, and evaluates to true if the expansion
              of the variable would result in an empty string.

     exists   Takes a file name as an argument and evaluates to true if the file exists.  The
              file is searched for on the system search path (see .PATH).

     target   Takes a target name as an argument and evaluates to true if the target has been
              defined.

     commands
              Takes a target name as an argument and evaluates to true if the target has been
              defined and has commands associated with it.

     Expression may also be an arithmetic or string comparison.  Variable expansion is performed
     on both sides of the comparison, after which the integral values are compared.  A value is
     interpreted as hexadecimal if it is preceded by 0x, otherwise it is decimal; octal numbers
     are not supported.  The standard C relational operators are all supported.  If after
     variable expansion, either the left or right hand side of a ‘==’ or ‘!=’ operator is not an
     integral value, then string comparison is performed between the expanded variables.  If no
     relational operator is given, it is assumed that the expanded variable is being compared
     against 0 or an empty string in the case of a string comparison.

     When pmake is evaluating one of these conditional expression, and it encounters a word it
     doesn't recognize, either the ``make'' or ``defined'' expression is applied to it, depending
     on the form of the conditional.  If the form is ‘.ifdef’ or ‘.ifndef’, the ``defined''
     expression is applied.  Similarly, if the form is ‘.ifmake’ or ‘.ifnmake, the ``make''’
     expression is applied.

     If the conditional evaluates to true the parsing of the makefile continues as before.  If it
     evaluates to false, the following lines are skipped.  In both cases this continues until a
     ‘.else’ or ‘.endif’ is found.

     For loops are typically used to apply a set of rules to a list of files.  The syntax of a
     for loop is:

     .for variable [variable ...] in expression
     ⟨make-rules⟩
     .endfor

     After the for expression is evaluated, it is split into words.  On each iteration of the
     loop, one word is taken and assigned to each variable, in order, and these variables are
     substituted into the make-rules inside the body of the for loop.  The number of words must
     come out even; that is, if there are three iteration variables, the number of words provided
     must be a multiple of three.

COMMENTS

     Comments begin with a hash (‘#’) character, anywhere but in a shell command line, and
     continue to the end of an unescaped new line.

SPECIAL SOURCES (ATTRIBUTES)

     .EXEC     Target is never out of date, but always execute commands anyway.

     .IGNORE   Ignore any errors from the commands associated with this target, exactly as if
               they all were preceded by a dash (‘-’).

     .MADE     Mark all sources of this target as being up-to-date.

     .MAKE     Execute the commands associated with this target even if the -n or -t options were
               specified.  Normally used to mark recursive pmake's.

     .NOPATH   Do not search for the target in the directories specified by .PATH.

     .NOTMAIN  Normally pmake selects the first target it encounters as the default target to be
               built if no target was specified.  This source prevents this target from being
               selected.

     .OPTIONAL
               If a target is marked with this attribute and pmake can't figure out how to create
               it, it will ignore this fact and assume the file isn't needed or already exists.

     .PHONY    The target does not correspond to an actual file; it is always considered to be
               out of date, and will not be created with the -t option.

     .PRECIOUS
               When pmake is interrupted, it removes any partially made targets.  This source
               prevents the target from being removed.

     .RECURSIVE
               Synonym for .MAKE.

     .SILENT   Do not echo any of the commands associated with this target, exactly as if they
               all were preceded by an at sign (‘@’).

     .USE      Turn the target into pmake's version of a macro.  When the target is used as a
               source for another target, the other target acquires the commands, sources, and
               attributes (except for .USE) of the source.  If the target already has commands,
               the .USE target's commands are appended to them.

     .USEBEFORE
               Exactly like .USE, but prepend the .USEBEFORE target commands to the target.

     .WAIT     If .WAIT appears in a dependency line, the sources that precede it are made before
               the sources that succeed it in the line.  Loops are not detected and targets that
               form loops will be silently ignored.

SPECIAL TARGETS

     Special targets may not be included with other targets, i.e. they must be the only target
     specified.

     .BEGIN   Any command lines attached to this target are executed before anything else is
              done.

     .DEFAULT
              This is sort of a .USE rule for any target (that was used only as a source) that
              pmake can't figure out any other way to create.  Only the shell script is used.
              The .IMPSRC variable of a target that inherits .DEFAULT's commands is set to the
              target's own name.

     .END     Any command lines attached to this target are executed after everything else is
              done.

     .IGNORE  Mark each of the sources with the .IGNORE attribute.  If no sources are specified,
              this is the equivalent of specifying the -i option.

     .INTERRUPT
              If pmake is interrupted, the commands for this target will be executed.

     .MAIN    If no target is specified when pmake is invoked, this target will be built.

     .MAKEFLAGS
              This target provides a way to specify flags for pmake when the makefile is used.
              The flags are as if typed to the shell, though the -f option will have no effect.

     .NOPATH  Apply the .NOPATH attribute to any specified sources.

     .NOTPARALLEL
              Disable parallel mode.

     .NO_PARALLEL
              Synonym for .NOTPARALLEL, for compatibility with other pmake variants.

     .ORDER   The named targets are made in sequence.

     .PATH    The sources are directories which are to be searched for files not found in the
              current directory.  If no sources are specified, any previously specified
              directories are deleted.  If the source is the special .DOTLAST target, then the
              current working directory is searched last.

     .PHONY   Apply the .PHONY attribute to any specified sources.

     .PRECIOUS
              Apply the .PRECIOUS attribute to any specified sources.  If no sources are
              specified, the .PRECIOUS attribute is applied to every target in the file.

     .SHELL   Sets the shell that pmake will use to execute commands.  The sources are a set of
              field=value pairs.

              name        This is the minimal specification, used to select one of the builtin
                          shell specs; sh, ksh, and csh.

              path        Specifies the path to the shell.

              hasErrCtl   Indicates whether the shell supports exit on error.

              check       The command to turn on error checking.

              ignore      The command to disable error checking.

              echo        The command to turn on echoing of commands executed.

              quiet       The command to turn off echoing of commands executed.

              filter      The output to filter after issuing the quiet command.  It is typically
                          identical to quiet.

              errFlag     The flag to pass the shell to enable error checking.

              echoFlag    The flag to pass the shell to enable command echoing.
              Example:

              .SHELL: name=ksh path=/bin/ksh hasErrCtl=true \
                      check="set -e" ignore="set +e" \
                      echo="set -v" quiet="set +v" filter="set +v" \
                      echoFlag=v errFlag=e

     .SILENT  Apply the .SILENT attribute to any specified sources.  If no sources are specified,
              the .SILENT attribute is applied to every command in the file.

     .SUFFIXES
              Each source specifies a suffix to pmake.  If no sources are specified, any
              previously specified suffixes are deleted.

ENVIRONMENT

     pmake uses the following environment variables, if they exist: MACHINE, MACHINE_ARCH,
     MACHINE_MULTIARCH, MAKE, MAKEFLAGS, MAKEOBJDIR, MAKEOBJDIRPREFIX, MAKESYSPATH, and PWD.

     MAKEOBJDIRPREFIX and MAKEOBJDIR may only be set in the environment or on the command line to
     pmake and not as makefile variables; see the description of ‘.OBJDIR’ for more details.

FILES

     .depend        list of dependencies
     Makefile       list of dependencies
     makefile       list of dependencies
     sys.mk         system makefile
     /usr/share/mk  system makefile directory

SEE ALSO

     mkdep(1)

HISTORY

     A make command appeared in Version 7 AT&T UNIX.