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 .include 〈file〉 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, 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.