Usenet 1994 January/usenetsourcesnewsgroupsinfomagicjanuary1994.iso/sources/misc/volume14/dmake/part10

Text File | 1990-07-26 | 39.0 KB | 962 lines

Newsgroups: comp.sources.misc
subject: v14i020: dmake version 3.5 part 10/21
From: [e-mail] (Dennis Vadura)
Sender: [e-mail] (Brandon S. Allbery - comp.sources.misc)

Posting-number: Volume 14, Issue 20
Submitted-by: [e-mail] (Dennis Vadura)
Archive-name: dmake/part10

#!/bin/sh
# this is part 10 of a multipart archive
# do not concatenate these parts, unpack them in order with /bin/sh
# file man/dmake.p continued
#
CurArch=10
if test ! -r s2_seq_.tmp
then echo "Please unpack part 1 first!"
     exit 1; fi
( read Scheck
  if test "$Scheck" != $CurArch
  then echo "Please unpack part $Scheck next!"
       exit 1;
  else exit 0; fi
) < s2_seq_.tmp || exit 1
echo "x - Continuing file man/dmake.p"
sed 's/^X//' << 'SHAR_EOF' >> man/dmake.p
X
X
X
XVersion 3.50                    UW                             10
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X     assignment allows macro values to grow:
X
X          MACRO += LINE
X
X     adds the value of LINE to the previous value of MACRO
X     separating the two by a single space (LINE is not expanded).
X     The final form:
X
X          MACRO +:= LINE
X
X     is similar to ++==, with the difference that the value of LINE
X     is expanded before being added to the previous value of
X     MACRO.
X
X     When ddmmaakkee defines a non-environment macro it strips leading
X     and trailing white space from the macro value.  Macros
X     imported from the environment via either the .IMPORT special
X     target (see the SPECIAL TARGETS section), or the --ee, or --EE
X     flags are an exception to this rule.  Their values are
X     always taken literally and white space is never stripped.
X     In addition, macros defined using the .IMPORT special target
X     do not have their values expanded when they are used within
X     a makefile.  In contrast, environment macros that are
X     imported due to the specification of the --ee or --EE flags are
X     subject to expansion when used.
X
X     To specify a macro expansion enclose the name in () or {}
X     and precede it with a dollar sign $.  Thus $(TEST)
X     represents an expansion of the macro variable named TEST.
X     If TEST is defined then $(TEST) is replaced by its expanded
X     value.  If TEST is not defined then $(TEST) expands to the
X     NULL string (this is equivalent to defining a macro as
X     'TEST=' ).  A short form may be used for single character
X     named macros.  In this case the parentheses are optional,
X     and $(I) is equivalent to $I.  Macro expansion is recursive,
X     hence if the value string contains an expression represent-
X     ing a macro expansion, the expansion is performed.  Circular
X     macro expansions are detected and cause an error to be
X     issued.
X
X     When defining a macro the given macro name is first expanded
X     before being used to define the macro.  Thus it is possible
X     to define macros whose names depend on values of other mac-
X     ros.  For example, suppose
X
X          CWD = $(PWD:b)
X
X     is defined, then the value of $(CWD) is the name of the
X     current directory.  This can be used to define macros
X     specific to this directory, for example:
X
X          _$(CWD).prt = list of files to print...
X
X
X
XVersion 3.50                    UW                             11
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X     The actual name of the defined macro is a function of the
X     current directory.  A construct such as this is useful when
X     processing a hierarchy of directories using .SETDIR attri-
X     buted targets and a collection of small distributed makefile
X     stubs.
X
X     Macro variables may be defined within the makefile, on the
X     command line, or imported from the environment.
X
X     ddmmaakkee supports several non-standard macro expansions: The
X     first is of the form:
X
X          _$_(_m_a_c_r_o___n_a_m_e_:_m_o_d_i_f_i_e_r___l_i_s_t_:_m_o_d_i_f_i_e_r___l_i_s_t_:_._._._)
X
X     where _m_o_d_i_f_i_e_r___l_i_s_t is chosen from the set { D or d, F or f,
X     B or b, S or s, T or t } and
X
X          d - directory portion of all path names
X          f - file (including suffix) portion of path names
X          b - file (not including suffix) portion of path names
X          s - simple pattern substitution
X          t - tokenization.
X
X     Thus if we have the example:
X
X          test = d1/d2/d3/a.out f.out d1/k.out
X
X     The following macro expansions produce the values on the
X     right of '-->' after expansion.
X
X          $(test:d)            --> d1/d2/d3/ d1/
X          $(test:b)            --> a f k
X          $(test:f)            --> a.out f.out k.out
X          ${test:db}           --> d1/d2/d3/a f d1/k
X          ${test:s/out/in/:f}  --> a.in f.in k.in
X          $(test:f:t"+")       --> a.out+f.out+k.out
X
X     If a token ends in a string composed from the value of the
X     macro DIRBRKSTR (ie. ends in a directory separator string,
X     e.g. '/' in UNIX) and you use the ::dd modifier then the
X     expansion returns the directory name less the final direc-
X     tory separator string.  Thus successive pairs of :d modif-
X     iers each remove a level of directory in the token string.
X
X     The tokenization modifier takes all white space separated
X     tokens from the macro value and separates them by the quoted
X     separator string.  The separator string may contain the fol-
X     lowing escape codes \a => <bel>, \b => <backspace>, \f =>
X     <formfeed>, \n => <nl>, \r => <cr>, \t => <tab>, \v =>
X     <vertical tab>, \" => ", and \xxx => <xxx> where xxx is the
X     octal representation of a character.  Thus the expansion:
X
X
X
X
XVersion 3.50                    UW                             12
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X          $(test:f:t"+\n")
X
X     gives:
X
X          a.out+
X          f.out+
X          k.out
X
X     The second non-standard form of macro expansion allows for
X     recursive macros.  It is possible to specify a $(_m_a_c_r_o___n_a_m_e)
X     or ${_m_a_c_r_o___n_a_m_e} expansion where _m_a_c_r_o___n_a_m_e contains more $(
X     ... ) or ${ ... } macro expansions itself.
X
X     For example $(CC$(_HOST)$(_COMPILER)) will first expand
X     CC$(_HOST)$(_COMPILER) to get a result and use that result
X     as the name of the macro to expand.  This is useful for
X     writing a makefile for more than one target environment.  As
X     an example consider the following hypothetical case. Suppose
X     that _HOST and _COMPILER are imported from the environment
X     and are set to represent the host machine type and the host
X     compiler respectively.
X
X          CFLAGS_VAX_CC = -c -O    # _HOST == "_VAX", _COMPILER == "_CC"
X          CFLAGS_PC_MSC = -c -ML   # _HOST == "_PC",  _COMPILER == "_MSC"
X
X          # redefine CFLAGS macro as:
X
X          CFLAGS := $(CFLAGS$(_HOST)$(_COMPILER))
X
X     This causes CFLAGS to take on a value that corresponds to
X     the environment in which the make is being invoked.
X
X     The final non-standard macro expansion is of the form:
X
X          string1{token_list}string2
X
X     where string1, string2 and token_list are expanded.  After
X     expansion, string1 is prepended to each token found in
X     token_list and string2 is appended to each resulting token
X     from the previous prepend.  string1 and string2 are not del-
X     imited by white space whereas the tokens in token_list are.
X     A null token in the token list is specified using "".  Thus
X     using another example we have:
X
X          test/{f1 f2}.o            --> test/f1.o test/f2.o
X          test/ {f1 f2}.o           --> test/ f1.o f2.o
X          test/{f1 f2} .o           --> test/f1 test/f2 .o
X          test/{ f1  "f2" "" }.o    --> test/f1.o test/f2.o
X                                    test/.o
X
X          and
X
X
X
X
XVersion 3.50                    UW                             13
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X          test/{ d1 d2 }/{ f1 f2 }.o --> test/d1/f1.o
X                                         test/d1/f2.o
X                                         test/d2/f1.o
X                                         test/d2/f2.o
X
X     See the SPECIAL MACROS section for a description of the spe-
X     cial macros that ddmmaakkee defines and understands.
X
XRRUULLEESS AANNDD TTAARRGGEETTSS
X     A makefile contains a series of entries that specify depen-
X     dencies.  Such entries are called _t_a_r_g_e_t_/_p_r_e_r_e_q_u_i_s_i_t_e or
X     _r_u_l_e definitions.  Each rule definition is optionally fol-
X     lowed by a set of lines that provide a recipe for updating
X     any targets defined by the rule.  Whenever ddmmaakkee attempts to
X     bring a target up to date and an explicit recipe is provided
X     with a rule defining the target, that recipe is used to
X     update the target.  A rule definition begins with a line
X     having the following syntax:
X
X          _<_t_a_r_g_e_t_s_> [_<_a_t_t_r_i_b_u_t_e_s_>] _<_r_u_l_e_o_p_> [_<_p_r_e_r_e_q_u_i_s_i_t_e_s_>] [;_<_r_e_c_i_p_e_>]
X
X     _t_a_r_g_e_t_s is a non-empty list of targets.  If the target is a
X     special target (see SPECIAL TARGETS section below) then it
X     must appear alone on the rule line.  For example:
X
X          .IMPORT .ERROR : ...
X
X     is not allowed since both .IMPORT and .ERROR are special
X     targets.  Special targets are not used in the construction
X     of the dependency graph and will not be made.
X
X     _a_t_t_r_i_b_u_t_e_s is a possibly empty list of attributes.  Any
X     attribute defined in the ATTRIBUTES section above may be
X     specified.  All attributes will be applied to the list of
X     named targets in the rule definition.  No other targets will
X     be affected.
X
X
X     NOTE:   As stated earlier, if both the target list and
X             prerequisite list are empty but the attributes list
X             is not, then the specified attributes affect all
X             targets in the makefile.
X
X
X     _r_u_l_e_o_p is a separator which is used to identify the targets
X     from the prerequisites.  Optionally it also provides a
X     facility for modifying the way in which ddmmaakkee handles the
X     making of the associated targets.  In its simplest form the
X     operator is a single ':', and need not be separated by white
X     space from its neighboring tokens.  It may additionally be
X     followed by any of the modifiers { !, ^, -, : }, where:
X
X
X
X
XVersion 3.50                    UW                             14
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X     !!    says execute the recipe for the associated targets once
X          for each out of date prerequisite.  Ordinarily the
X          recipe is executed once for all out of date prere-
X          quisites at the same time.
X
X     ^^    says to insert the specified prerequisites, if any,
X          before any other prerequisites already associated with
X          the specified targets.  In general, it is not useful to
X          specify ^ with an empty list of prerequisites.
X
X     --    says to clear the previous list of prerequisites before
X          adding the new prerequisites.  Thus,
X
X               .SUFFIXES :
X               .SUFFIXES : .a .b
X
X          can be replaced by
X
X               .SUFFIXES :- .a .b
X
X          however the old form still works as expected.  NOTE:
X          .SUFFIXES is ignored by ddmmaakkee it is used here simply as
X          an example.
X
X     ::    When the rule operator is not modified by a second ':'
X          only one set of rules may be specified for making a
X          target.  Multiple definitions may be used to add to the
X          list of prerequisites that a target depends on.  How-
X          ever, if a target is multiply defined only one defini-
X          tion may specify a recipe for making the target.
X
X          When a target's rule operator is modified by a second
X          ':' (:: for example) then this definition may not be
X          the only definition with a recipe for the target.
X          There may be other :: target definition lines that
X          specify a different set of prerequisites with a dif-
X          ferent recipe for updating the target. Any such target
X          is made if any of the definitions find it to be out of
X          date with respect to the related prerequisites and uses
X          the corresponding recipe to update the target.
X
X          In the following simple example, each rule has a `::'
X          _r_u_l_e_o_p.  In such an operator we call the first `:' the
X          operator, and the second `:' the modifier.
X
X          a.o :: a.c b.h
X             first recipe for making a.o
X
X          a.o :: a.y b.h
X             second recipe for making a.o
X
X          If a.o is found to be out of date with respect to a.c
X
X
X
XVersion 3.50                    UW                             15
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X          then the first recipe is used to make a.o.  If it is
X          found out of date with respect to a.y then the second
X          recipe is used.  If a.o is out of date with respect to
X          b.h then both recipes are invoked to make a.o.  In the
X          last case the order of invocation corresponds to the
X          order in which the rule definitions appear in the
X          makefile.
X
X     Targets defined using a single `:' operator with a recipe
X     may be redefined again with a new recipe by using a `:'
X     operator with a `:' modifier.  This is equivalent to a tar-
X     get having been initially defined with a rule using a `:'
X     modifier.  Once a target is defined using a `:' modifier it
X     may not be defined again with a recipe using only the `:'
X     operator with no `:' modifier.  In both cases the use of a
X     `:' modifier creates a new list of prerequisites and makes
X     it the current prerequisite list for the target.  The `:'
X     operator with no recipe always modifies the current list of
X     prerequisites.  Thus assuming each of the following defini-
X     tions has a recipe attached, then:
X
X          joe :  fred ...     (1)
X          joe :: more ...     (2)
X
X          and
X
X          joe :: fred ...     (3)
X          joe :: more ...     (4)
X
X     are legal and mean:  add the recipe associated with (2), or
X     (4) to the set of recipes for joe, placing them after exist-
X     ing recipes for making joe.  The construct:
X
X          joe :: fred ...     (5)
X          joe : more ... (6)
X
X          and
X
X          joe : fred ... (7)
X          joe : more ... (8)
X
X     are errors since we have two sets of perfectly good recipes
X     for making the target.
X
X     _p_r_e_r_e_q_u_i_s_i_t_e_s is a possibly empty list of targets that must
X     be brought up to date before making the current target.
X
X     _r_e_c_i_p_e is a short form and allows the user to specify short
X     rule definitions on a single line.  It is taken to be the
X     first recipe line in a larger recipe if additional lines
X     follow the rule definition.  If the semi-colon is present
X     but the recipe line is empty (ie. null string) then it is
X
X
X
XVersion 3.50                    UW                             16
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X     taken to be an empty rule.  Any target so defined causes the
X     _D_o_n_'_t _k_n_o_w _h_o_w _t_o _m_a_k_e _._._. error message to be suppressed
X     when ddmmaakkee tries to make the target and fails.  This silence
X     is maintained for rules that are terminated by a semicolon
X     and have no following recipe lines, for targets listed on
X     the command line, and for the first target found in the
X     makefile.
X
XRREECCIIPPEESS
X     The traditional format used by most versions of Make defines
X     the recipe lines as arbitrary strings that may contain macro
X     expansions.  They follow a rule definition line and may be
X     spaced apart by comment or blank lines.  The list of recipe
X     lines defining the recipe is terminated by a new target
X     definition, a macro definition, or end-of-file.  Each recipe
X     line MMUUSSTT begin with a <<TTAABB>> character which may optionally
X     be followed with one or both of the characters _'_-_@_'.  The
X     _'_-_' indicates that non-zero exit values (ie. errors) are to
X     be ignored when this recipe line is executed, and the _'_@_'
X     indicates that the recipe line should NOT be echoed to the
X     terminal prior to being executed.  Both switches are off by
X     default (ie. by default, errors are significant and commands
X     are echoed).  Global settings activated via command line
X     options or special attribute or target names may also affect
X     these settings.  An example recipe:
X
X          target :
X               first recipe line
X               second recipe line, executed independently of the first.
X               @a recipe line that is not echoed
X               -and one that has errors ignored.
X
X     The second and new format of the recipe block begins the
X     block with the character '[' (the open group character) in
X     the last non-white space position of a line, and terminates
X     the block with the character ']' (the close group character)
X     in the first non-white space position of a line.  In this
X     form each recipe line need not have a leading TAB.  This is
X     called a recipe group.  Groups so defined are fed intact as
X     a single unit to a shell for execution whenever the
X     corresponding target needs to be updated.  If the open group
X     character '[' is preceded by one or both of - or @ then they
X     apply to the entire group in the same way that the - and @
X     apply to single recipe lines.  See the MAKING TARGETS sec-
X     tion for a description of how ddmmaakkee invokes recipes.  Here
X     is an example of a group recipe:
X
X          target :
X          [
X               first recipe line
X               second recipe line
X               all of these recipe lines are fed to a
X
X
X
XVersion 3.50                    UW                             17
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X               single copy of a shell for execution.
X          ]
X
X
XTTEEXXTT DDIIVVEERRSSIIOONNSS
X     ddmmaakkee supports the notion of text diversions in recipes.  If
X     a recipe line contains the character sequence <<++ it is
X     recognized and a text diversion is started.  This causes
X     ddmmaakkee to open a temporary file and to copy into that file
X     all text that is found up to but not including the text
X     diversion termination sequence ++>>.  Any diversions started
X     with a <<++ must be terminated with a corresponding ++>>; the
X     terminating ++>> may appear on the same or on a subsequent
X     recipe line.  Nesting of diversions is not supported.
X     New-lines provided in the recipe that forms the text of a
X     diversion are inserted into the resulting temporary file at
X     the appropriate locations.  The diversion text may contain
X     the same escape codes as those described in the MACROS sec-
X     tion.
X
X     The primary use of diversions is on systems (like MSDOS)
X     that do not support long command lines.  The diversion makes
X     it possible to produce a temporary file containing the argu-
X     ments which can then be supplied to a utility via the tem-
X     porary file.
X
X     Here are some examples:
X
X          all:
X               cat <+this is a
X               test of the text diversion+>
X
X     The above will cause ddmmaakkee to execute the command:
X
X          cat /tmp/mk12294AA
X
X     and the contents of the temporary file will be the text
X     found between the <<++ and ++>> strings of the above recipe.
X
X          OBJ = fred.obj mary.obj joe.obj
X          all : $(OBJ)
X               link @<+$(^:t"+\n")\n+>
X
X     The result of making `all' in the second example is the com-
X     mand:
X
X          link @/tmp/mk02394AA
X
X     where the temporary file contains:
X
X          fred.obj+
X          mary.obj+
X
X
X
XVersion 3.50                    UW                             18
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X          joe.obj
X
X     The last line of the file is terminated by a new-line which
X     is inserted due to the \n placed immediately before the ++>>
X     text diversion terminator.
X
X     If the environment variable TMPDIR is defined then the tem-
X     porary file is created in the directory specified by that
X     variable.  A makefile can change where temporary files are
X     created by defining a macro named TMPDIR and exporting it
X     using the .EXPORT special target.
X
XSSPPEECCIIAALL TTAARRGGEETTSS
X     This section describes the special targets that are recog-
X     nized by ddmmaakkee.  Some are affected by attributes and others
X     are not.
X
X     ..EERRRROORR        If defined then the recipe associated with
X                   this target is executed whenever an error con-
X                   dition is detected by ddmmaakkee.  All attributes
X                   that can be used with any other target may be
X                   used with this target.  Any prerequisites of
X                   this target will be brought up to date during
X                   it's processing.  NOTE:  errors will be
X                   ignored while making this target, in extreme
X                   cases this may cause some problems.
X
X     ..EEXXPPOORRTT       All prerequisites associated with this target
X                   are assumed to correspond to macro names and
X                   they and their values are exported to the
X                   environment as environment strings at the
X                   point in the makefile at which this target
X                   appears.  Any attributes specified with this
X                   target are ignored.  Only macros which have
X                   been assigned a value in the makefile prior to
X                   the export directive are exported, macros as
X                   yet undefined are not exported.
X
X     ..IIMMPPOORRTT       Prerequisite names specified for this target
X                   are searched for in the environment and
X                   defined as macros with their value taken from
X                   the environment.  If the name cannot be found
X                   in the environment an error message is issued.
X                   .IMPORT accepts the .IGNORE attribute.  When
X                   given, it causes ddmmaakkee to ignore the above
X                   error.  See the MACROS section for a descrip-
X                   tion of the processing of imported macro
X                   values.
X
X     ..IINNCCLLUUDDEE      Parse another makefile just as if it had been
X                   located at the point of the .INCLUDE in the
X                   current makefile.  The list of prerequisites
X
X
X
XVersion 3.50                    UW                             19
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X                   gives the list of makefiles to try to read.
X                   If the list contains multiple makefiles then
X                   they are read in order from left to right.
X                   The following search rules are used when try-
X                   ing to locate the file.  If the filename is
X                   surrounded by " or just by itself then it is
X                   searched for in the current directory.  If it
X                   is not found it is then searched for in each
X                   of the directories specified for the .INCLU-
X                   DEDIRS special target.  If the file name is
X                   surrounded by < and >, (ie.
X                   <my_spiffy_new_makefile>) then it is searched
X                   for only in the directories given by the
X                   .INCLUDEDIRS special target.  In both cases if
X                   the file name is a fully qualified name start-
X                   ing at the root of the file system then it is
X                   only searched for once, and the .INCLUDEDIRS
X                   list is ignored.  .INCLUDE accepts the .IGNORE
X                   and .SETDIR attributes.  If .IGNORE attribute
X                   is given and the file cannot be found then
X                   ddmmaakkee continues processing, otherwise an error
X                   message is generated.  The .SETDIR attribute
X                   causes ddmmaakkee to change directories to the
X                   specified directory prior to attempting the
X                   include operation.
X
X     ..IINNCCLLUUDDEEDDIIRRSS  The list of prerequisites specified for this
X                   target defines the set of directories to
X                   search when trying to include a makefile.
X
X     ..MMAAKKEEFFIILLEESS    The list of prerequisites is the set of files
X                   to try to read as the default makefile.  By
X                   default this target is defined as:
X
X                        .MAKEFILES : makefile.mk Makefile
X                   makefile
X
X
X     ..SSOOUURRCCEE       The prerequisite list of this target defines a
X                   set of directories to check when trying to
X                   locate a target file name.  See the section on
X                   BINDING of targets for more information.
X
X     ..SSOOUURRCCEE..ssuuffff  The same as .SOURCE, except that the
X                   .SOURCE.suff list is searched first when try-
X                   ing to locate a file matching the a target
X                   whose name ends in the suffix .suff.
X
X     ..RREEMMOOVVEE       The recipe of this target is used whenever
X                   ddmmaakkee needs to remove intermediate targets
X                   that were made but do not need to be kept
X                   around.  Such targets result from the
X
X
X
XVersion 3.50                    UW                             20
X
X
X
X
XDMAKE(p)               Unsupported Software               DMAKE(p)
X
X
X
X                   application of transitive closure on the
X                   dependency graph.
X
X     In addition to the special targets above, several other
X     forms of targets are recognized and are considered special,
X     their exact form and use is defined in the sections that
X     follow.
X
XSSPPEECCIIAALL MMAACCRROOSS
X     ddmmaakkee defines a number of special macros.  They are divided
X     into two classes: control macros and run-time macros.  The
X     control macros are used by ddmmaakkee to configure it's actions,
X     and are the preferred method of doing so.  In the case when
X     a control macro has the same function as a special target or
X     attribute they share the same name as the special target or
X     attribute.  The run-time macros are defined when ddmmaakkee makes
X     targets and may be used by the user inside recipes.  We
X     first give the control macros and their meanings.
X
X     To use the control macros simply assign them a value just
X     like any other macro.  The control macros are divided into
X     three groups: string valued macros, character valued macros,
X     and boolean valued macros.
X
X     The following are all of the string valued macros.  This
X     list is also divided into three groups.  The first group
X     gives the string valued macros that are defined internally
X     and cannot be directly set by the user.
X
X     DDIIRRBBRRKKSSTTRR     Contains the string of chars used to terminate
X                   the name of a directory in a pathname.  Under
X                   UNIX it's value is "/", under MSDOS it's value
X                   is "/\:".
X
X     IINNCCDDEEPPTTHH      This macro's value is a string of digits
X                   representing the current depth of makefile
X                   inclusion.  In the first makefile level this
X                   value is zero.
X
X     MMFFLLAAGGSS        Is the list of flags that were given on the
X                   command line including a leading switch char-
X                   acter.  The -f flag is not included in this
X                   list.
X
X     MMAAKKEECCMMDD       Is the name with which ddmmaakkee was invoked.
X
X     MMAAKKEEDDIIRR       Is the full path to the initial directory in
X                   which ddmmaakkee was invoked.
X
X     MMAAKKEEFFIILLEE      Contains the string "-f _m_a_k_e_f_i_l_e" where,
X                   _m_a_k_e_f_i_l_e is the name of initial user makefile
X                   that was first read.
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X     MMAAKKEEFFLLAAGGSS     Is the same as $(MFLAGS) but has no leading
X                   switch character. (ie. MFLAGS = -$(MAKEFLAGS))
X
X     MMAAKKEEMMAACCRROOSS    Contains the complete list of macro expres-
X                   sions that were specified on the command line.
X
X     MMAAXXPPRROOCCEESSSSLLIIMMIITT
X                   Is a numeric string representing the maximum
X                   number of processes that ddmmaakkee can use when
X                   making targets in the parallel mode.
X
X     NNUULLLL          Is permanently defined to be the NULL string.
X                   This is useful when comparing a conditional
X                   expression to an NULL value.
X
X     PPWWDD           Is the full path to the current directory in
X                   which make is executing.
X
X     TTMMDD           Stands for "To Make Dir", and is the path from
X                   the present directory (value of $(PWD)) to the
X                   directory that ddmmaakkee was started up in (value
X                   of $(MAKEDIR)).  This macro is modified when
X                   .SETDIR attributes are processed.
X
X
X     The second group of string valued macros control ddmmaakkee
X     behavior and may be set by the user.
X
X     ..SSEETTDDIIRR         If this macro is assigned a value then ddmmaakkee
X                     will change to the directory given by that
X                     value before making any targets.  This macro
X                     is equivalent to the .SETDIR attribute.
X                     Thus the two lines:
X
X                     .SETDIR=fred/hello :
X
X                     .SETDIR := fred/hello
X
X                     are completely equivalent.  The difference
X                     being that the first is processed as a rule
X                     definition and the other as a macro.
X
X     AAUUGGMMAAKKEE         If set to a non NULL value will enable the
X                     transformation of special meta targets to
X                     support special AUGMAKE inferences.
X
X     DDIIRRSSEEPPSSTTRR       Contains the string that is used to separate
X                     directory components when path names are
X                     constructed.  It is defined with a default
X                     value at startup.
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X     GGRROOUUPPFFLLAAGGSS      This macro gives the set of flags to pass to
X                     the shell when invoking it to execute a
X                     group recipe.  The value of the macro is the
X                     list of flags with a leading switch indica-
X                     tor.  (ie. `-' under UNIX)
X
X     GGRROOUUPPSSHHEELLLL      This macro defines the full path to the exe-
X                     cutable image to be used as the shell when
X                     processing group recipes.  This macro must
X                     be defined if group recipes are used.  It is
X                     assigned a default value in the startup
X                     makefile.  Under UNIX this value is /bin/sh.
X
X     GGRROOUUPPSSUUFFFFIIXX     If defined, this macro gives the string to
X                     use as a suffix when creating group recipe
X                     files to be handed to the command inter-
X                     preter.  For example, if it is defined as
X                     .sh, then all temporary files created by
X                     ddmmaakkee will end in the suffix .sh.  Under
X                     MSDOS if you are using command.com as your
X                     GROUPSHELL, then this suffix must be set to
X                     .bat in order for group recipes to work
X                     correctly.
X
X     MMAAKKEE            It is defined in the startup file by
X                     default.  The string $(MAKE) is recognized
X                     when using the -n option for single line
X                     recipes.  Initially this macro is defined to
X                     have the value "$(MAKECMD) $(MFLAGS)".
X
X     MMAAKKEESSTTAARRTTUUPP     This macro defines the full path to the ini-
X                     tial startup makefile.  Use the --VV command
X                     line option to discover it's initial value.
X
X     MMAAXXLLIINNEELLEENNGGTTHH   This macro defines the maximum size of a
X                     single line of makefile input text.  The
X                     size is specified as a number, the default
X                     value is defined internally and is shown via
X                     the --VV option.  A buffer of this size plus 2
X                     is allocated for reading makefile text.  The
X                     buffer is freed before any targets are made,
X                     thereby allowing files containing long input
X                     lines to be processed without consuming
X                     memory during the actual make.
X
X     MMAAXXPPRROOCCEESSSS      Specify the maximum number of child
X                     processes to use when making targets.  The
X                     default value of this macro is "1" and it's
X                     value cannot exceed the value of the macro
X                     MAXPROCESSLIMIT.  Setting the value of MAX-
X                     PROCESS on the command line or in the
X                     makefile is equivalent to supplying a
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X                     corresponding value to the -P flag on the
X                     command line.
X
X     PPRREEPP            This macro defines the number of iterations
X                     to be expanded automatically when processing
X                     % rule definitions of the form:
X
X                     % : %.suff
X
X                     See the sections on PERCENT(%) RULES for
X                     details on how PREP is used.
X
X     SSHHEELLLL           This macro defines the full path to the exe-
X                     cutable image to be used as the shell when
X                     processing single line recipes.  This macro
X                     must be defined if recipes requiring the
X                     shell for execution are to be used.  It is
X                     assigned a default value in the startup
X                     makefile.  Under UNIX this value is /bin/sh.
X
X     SSHHEELLLLFFLLAAGGSS      This macro gives the set of flags to pass to
X                     the shell when invoking it to execute a sin-
X                     gle line recipe.  The value of the macro is
X                     the list of flags with a leading switch
X                     indicator.  (ie. `-' under UNIX)
X
X     SSHHEELLLLMMEETTAASS      Each time ddmmaakkee executes a single recipe
X                     line (not a group recipe) the line is
X                     searched for any occurrence of a character
X                     defined in the value of SHELLMETAS.  If such
X                     a character is found the recipe line is
X                     defined to require a shell to ensure it's
X                     correct execution.  In such instances a
X                     shell is used to invoke the recipe line.  If
X                     no match is found the recipe line is exe-
X                     cuted without the use of a shell.
X
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X     There is only one character valued macro defined by ddmmaakkee:
X     SSWWIITTCCHHAARR contains the switch character used to introduce
X     options on command lines.  On UNIX it's value is '-', on
X     MSDOS it's value may be '/' or '-'.  The macro is internally
X     defined and is not user setable.
X
X     All boolean macros currently understood by ddmmaakkee correspond
X     directly to the previously defined attributes.  These macros
X     provide a second way to apply global attributes, and
X     represent the preferred method of doing so.  They are used
X     by assigning them a value.  If the value is not a NULL
X     string then the boolean condition is set to on.  If the
X     value is a NULL string then the condition is set to off.
X     There are five conditions defined and they correspond
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X     directly to the attributes of the same name.  Their meanings
X     are defined in the ATTRIBUTES section above.  The macros
X     are: ..EEPPIILLOOGG, ..IIGGNNOORREE, ..PPRREECCIIOOUUSS, ..PPRROOLLOOGG, and ..SSIILLEENNTT.
X     Assigning any of these a non NULL value will turn on the
X     corresponding attribute on a global scale.
X
X     The second class of macros is the run-time macros.  These
X     macros are defined when ddmmaakkee is making targets, and may
X     take on different values for each target.  $$@@ is defined to
X     be the full target name, $$?? is the list of all out of date
X     prerequisites, $$&& is the list of all prerequisites, $$>> is
X     the name of the library if the current target is a library
X     member, $$<< is the list of prerequisites specified in the
X     current rule (this includes any inferred prerequisites), $$**
X     is defined as $$((@@::ddbb)) when making targets with explicit
X     recipes and is defined as the value of % when making targets
X     whose recipe is the result of an inference.  In the first
X     case $$** is the target name with no suffix, and in the latter
X     is the value of the matched % pattern from the associated
X     %-rule.  $$^^ expands to the set of out of date prerequisites
X     taken from the current value of $$<<.  In addition to these,
SHAR_EOF
echo "End of part 10"
echo "File man/dmake.p is continued in part 11"
echo "11" > s2_seq_.tmp
exit 0