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rulparse.c
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/*
--
-- SYNOPSIS
-- Perform semantic analysis on input
--
-- DESCRIPTION
-- This code performs semantic analysis on the input, and builds
-- the complex internal datastructure that is used to represent
-- the user makefile.
--
-- AUTHOR
-- Dennis Vadura, dvadura@dmake.wticorp.com
--
-- WWW
-- http://dmake.wticorp.com/
--
-- COPYRIGHT
-- Copyright (c) 1996,1997 by WTI Corp. All rights reserved.
--
-- This program is NOT free software; you can redistribute it and/or
-- modify it under the terms of the Software License Agreement Provided
-- in the file <distribution-root>/COPYING.
--
-- LOG
-- Use cvs log to obtain detailed change logs.
*/
#include "extern.h"
/* prototypes for local functions */
static void _add_indirect_prereq ANSI((CELLPTR));
static int _add_root ANSI((CELLPTR));
static CELLPTR _build_graph ANSI((int, CELLPTR, CELLPTR));
static char* _build_meta ANSI((char*));
static int _do_magic ANSI((int, char*, CELLPTR, CELLPTR, t_attr, char*));
static void _do_special ANSI((int, int, t_attr,char*,CELLPTR,CELLPTR,int*));
static int _do_targets ANSI((int, t_attr, char*, CELLPTR, CELLPTR));
static t_attr _is_attribute ANSI((char*));
static int _is_special ANSI((char*));
static char* _is_magic ANSI((char*));
static int _is_percent ANSI((char*));
static CELLPTR _make_multi ANSI((CELLPTR));
static CELLPTR _replace_cell ANSI((CELLPTR,CELLPTR,CELLPTR));
static void _set_attributes ANSI((t_attr, char*, CELLPTR ));
static void _stick_at_head ANSI((CELLPTR, CELLPTR));
static void _set_global_attr ANSI((t_attr));
/* static variables that must persist across invocation of Parse_rule_def */
static CELLPTR _sv_targets = NIL(CELL);
static STRINGPTR _sv_rules = NIL(STRING); /* first recipe element. */
static STRINGPTR _sv_crule = NIL(STRING); /* current/last recipe element. */
static CELLPTR _sv_edgel = NIL(CELL);
static LINKPTR _sv_ind_prq = NIL(LINK); /* indirect prerequisites for % cell */
static int _sp_target = FALSE;
static t_attr _sv_attr;
static int _sv_flag;
static int _sv_op;
static char *_sv_setdir;
static char _sv_globprq_only = 0;
/* Define for global attribute mask (A_SWAP == A_WINPATH) */
#define A_GLOB (A_PRECIOUS | A_SILENT | A_IGNORE | A_EPILOG | A_SWAP |\
A_SHELL | A_PROLOG | A_NOINFER | A_SEQ | A_MKSARGS )
PUBLIC int
Parse_rule_def( state )/*
=========================
Parse the rule definition contained in Buffer, and modify the state
if appropriate. The function returns 0, if the definition is found to
be an illegal rule definition, and it returns 1 if it is a rule definition.
*/
int *state;
{
TKSTR input; /* input string struct for token search */
CELLPTR targets; /* list of targets if any */
CELLPTR prereq; /* list of prereq if any */
CELLPTR prereqtail; /* tail of prerequisite list */
CELLPTR cp; /* temporary cell pointer for list making */
char *result; /* temporary storage for result */
char *tok; /* temporary pointer for tokens */
char *set_dir; /* value of setdir attribute */
char *brk; /* break char list for Get_token */
char *firstrcp; /* first recipe line, from ; in rule line */
t_attr attr; /* sum of attribute flags for current tgts*/
t_attr at; /* temp place to keep an attribute code */
int op; /* rule operator */
int special; /* indicate special targets in rule */
int augmeta; /* indicate .<suffix> like target */
int percent; /* indicate percent rule target */
int percent_prq; /* indicate mixed %-rule prereq possible */
DB_ENTER( "Parse_rule_def" );
op = 0;
attr = 0;
special = 0;
augmeta = 0;
percent = 0;
set_dir = NIL( char );
targets = NIL(CELL);
prereq = NIL(CELL);
prereqtail = NIL(CELL);
percent_prq = 0;
/* Check to see if the line is of the form:
* targets : prerequisites; first recipe line
* If so remember the first_recipe part of the line. */
firstrcp = strchr( Buffer, ';' );
if( firstrcp != NIL( char ) ) {
*firstrcp++ = 0;
firstrcp = DmStrSpn( firstrcp, " \t" );
}
result = Expand( Buffer );
/* Remove CONTINUATION_CHAR, keep the <nl> */
for( brk=strchr(result,CONTINUATION_CHAR); brk != NIL(char); brk=strchr(brk,CONTINUATION_CHAR) )
if( brk[1] == '\n' )
*brk = ' ';
else
brk++;
DB_PRINT( "par", ("Scanning: [%s]", result) );
SET_TOKEN( &input, result );
brk = ":-^!|";
Def_targets = TRUE;
/* Scan the input rule line collecting targets, the operator, and any
* prerequisites. Stop when we run out of targets and prerequisites. */
while( *(tok = Get_token( &input, brk, TRUE )) != '\0' )
if( !op ) {
/* we are scanning targets and attributes
* check to see if token is an operator. */
op = Rule_op( tok );
if( !op ) {
/* Define a new cell, or get pointer to pre-existing cell. */
/* Do we need cells for attributes? If not move the definition
* to the target part. */
cp = Def_cell( tok );
/* A $ character indicates either a literal $ in the pathname (this
* was broken before) or a dynamic macro (this is a syntax error).
* FIXME: Here would be the place to add a sanity check. */
DB_PRINT( "par", ("tg_cell [%s]", tok) );
if( (at = _is_attribute(tok)) != 0 ) {
/* Ignore .SILENT when -vr is active. */
if( (Verbose & V_FORCEECHO) && (at == A_SILENT) )
at = 0;
/* Logically OR the attributes specified into one main
* ATTRIBUTE mask. */
if( at == A_SETDIR ) {
if( set_dir != NIL( char ) )
Warning( "Multiple .SETDIR attribute ignored" );
else
set_dir = DmStrDup( tok );
}
attr |= at;
}
else {
/* Not an attribute, this must be a target. */
int tmp;
tmp = _is_special( tok );
if( _is_percent( tok ) ) {
/* First %-target checks if there were non-%-targets before. */
if( !percent && targets != NIL(CELL) )
Fatal( "A %%-target must not be mixed with non-%%-targets, offending target [%s]", tok );
percent++;
cp->ce_flag |= F_PERCENT;
} else {
if( percent )
Fatal( "A non-%%-target must not be mixed with %%-targets, offending target [%s]", tok );
}
if( _is_magic( tok ) ) {
/* Check that AUGMAKE targets are not mixed with other
* targets. The return value of _is_magic() is discarded and
* calculated again in _do_targets() if this rule definition
* really is a .<suffix> like target.
* If we would allow only one target per line we could easily
* store the result for later, but for multiple .<suffix>
* targets this creates too much overhead.
* These targets should be rare (obsolete?) anyway. */
if( !augmeta && targets != NIL(CELL) )
Fatal( "An AUGMAKE meta target must not be mixed with non AUGMAKE meta targets, offending target [%s]", tok );
augmeta++;
cp->ce_flag |= F_MAGIC; /* do_magic will also add F_PERCENT later. */
} else {
if( augmeta )
Fatal( "A non AUGMAKE meta target must not be mixed with AUGMAKE meta targets, offending target [%s]", tok );
}
if( special )
Fatal( "Special target must appear alone, found [%s]", tok );
else if( !(cp->ce_flag & F_MARK) ) {
/* Targets are kept in this list in lexically sorted order.
* This allows for easy equality comparison of target
* sets.*/
CELLPTR prev,cur;
for(prev=NIL(CELL),cur=targets;cur;prev=cur,cur=cur->ce_link)
if(strcmp(cur->CE_NAME,cp->CE_NAME) > 0)
break;
cp->ce_link = cur;
if (!prev)
targets = cp;
else
prev->ce_link = cp;
cp->ce_flag |= F_MARK | F_EXPLICIT;
special = tmp;
}
else
Warning( "Duplicate target [%s]", cp->CE_NAME );
}
}
else {
/* found an operator so empty out break list and clear mark
* bits on target list, setting them all to F_VISITED*/
brk = "";
for( cp=targets; cp != NIL(CELL); cp=cp->ce_link ) {
cp->ce_flag ^= F_MARK;
cp->ce_flag |= F_VISITED;
}
Def_targets = FALSE;
}
}
else {
/* Scanning prerequisites so build the prerequisite list. We use
* F_MARK flag to make certain we have only a single copy of the
* prerequisite in the list */
cp = Def_cell( tok );
/* %-prerequisits require eiter a %-target or this might be a rule of
* the "ATTRIBUTE_LIST : targets" form. */
if( _is_percent( tok ) ) {
if( percent || ((targets == NIL(CELL)) && attr) )
percent_prq = 1;
else
Fatal( "Syntax error in %% rule, missing %% target");
}
if( cp->ce_flag & F_VISITED ) {
if( cp->ce_attr & A_COMPOSITE )
continue;
else
Fatal( "Detected circular dependency in graph at [%s]",
cp->CE_NAME );
}
else if( !(cp->ce_flag & F_MARK) ) {
DB_PRINT( "par", ("pq_cell [%s]", tok) );
cp->ce_flag |= F_MARK;
if( prereqtail == NIL(CELL) ) /* keep prereq's in order */
prereq = cp;
else
prereqtail->ce_link = cp;
prereqtail = cp;
cp->ce_link = NIL(CELL);
}
else if( !(cp->ce_attr & A_LIBRARY) && (Verbose & V_WARNALL))
Warning("Duplicate entry [%s] in prerequisite list",cp->CE_NAME);
}
/* Check to see if we have a percent rule that has only global
* prerequisites, i.e. they are of the form: "%.a : foo".
* If so then set the flag so that later on, we don't issue
* an error if such targets supply an empty set of rules. */
if( percent && !percent_prq && (prereq != NIL(CELL)) )
_sv_globprq_only = 1;
/* It's ok to have targets with attributes, and no prerequisites, but it's
* not ok to have no targets and no attributes, or no operator */
CLEAR_TOKEN( &input ); FREE(result); result = NIL(char);
if( !op ) {
DB_PRINT( "par", ("Not a rule [%s]", Buffer) );
DB_RETURN( 0 );
}
/* More than one percent target didn't work with prior versions. */
if( (percent > 1) && !(op & R_OP_OR) )
Warning( "Prior to dmake 4.5 only one\n"
"%%-target per target-definition worked reliably. Check your makefiles.\n" );
if( !attr && targets == NIL(CELL) ) {
Fatal( "Missing targets or attributes in rule" );
if( set_dir != NIL( char )) FREE( set_dir );
DB_RETURN( 0 );
}
/* We have established we have a legal rules line, so we must process it.
* In doing so we must handle any special targets. Special targets must
* appear alone possibly accompanied by attributes.
* NOTE: special != 0 ==> targets != NIL(CELL) */
if( prereqtail != NIL(CELL) ) prereqtail->ce_link = NIL(CELL);
/* Clear out MARK bits used in duplicate checking. I originally wanted
* to do this as the lists get processed but that got too error prone
* so I bit the bullit and added these two loops. */
for( cp=prereq; cp != NIL(CELL); cp=cp->ce_link ) cp->ce_flag &= ~F_MARK;
for( cp=targets; cp != NIL(CELL); cp=cp->ce_link ) cp->ce_flag &= ~F_VISITED;
/* Check to see if the previous recipe was bound, if not the call
* Bind_rules_to_targets() to bind the recipe (_sv_rules) to the
* target(s) (_sv_targets). */
/* was: if( _sv_rules != NIL(STRING) ) Bind_rules_to_targets( F_DEFAULT );*/
/* Only Add_recipe_to_list() sets _sv_rules and Bind_rules_to_targets()
* clears the (static) variables again. Bind_rules_to_targets() is
* (should be) called after State is leaving RULE_SCAN in Parse().
* Abort if there are unbound recipes. FIXME: Remove this paragraph
* if this never occurs. */
if( _sv_rules != NIL(STRING) )
Fatal( "Internal Error: _sv_rules not empty." );
/* Add the first recipe line to the list */
if( firstrcp != NIL( char ) )
Add_recipe_to_list( firstrcp, TRUE, FALSE );
/* Save these prior to calling _do_targets, since _build_graph needs the
* _sv_setdir value for matching edges. */
_sv_op = op;
_sv_setdir = set_dir;
if( special )
/* _do_special() can alter *state */
_do_special( special, op, attr, set_dir, targets, prereq, state );
else
*state = _do_targets( op, attr, set_dir, targets, prereq );
if( (*state != RULE_SCAN) && (_sv_rules != NIL(STRING)) )
Fatal( "Unexpected recipe found." );
DB_RETURN( 1 );
}
PUBLIC int
Rule_op( op )/*
================
Check the passed in op string and map it to one of the rule operators */
char *op;
{
int ret = 0;
DB_ENTER( "rule_op" );
if( *op == TGT_DEP_SEP ) {
ret = R_OP_CL;
op++;
/* All rule operations begin with a :, but may include any one of the
* four modifiers. In order for the rule to be properly mapped we must
* check for each of the modifiers in turn, building up our return bit
* string. */
while( *op && ret )
switch( *op ) {
case ':': ret |= R_OP_DCL; op++; break;
case '!': ret |= R_OP_BG; op++; break;
case '^': ret |= R_OP_UP; op++; break;
case '-': ret |= R_OP_MI; op++; break;
case '|': ret |= R_OP_OR; op++; break;
default : ret = 0; /* an invalid modifier, chuck whole string */
}
if( *op != '\0' ) ret = 0;
}
DB_RETURN( ret );
}
PUBLIC void
Add_recipe_to_list( rule, white_too, no_check )/*
=================================================
Take the provided string and add it to the list of recipe lines
we are saving to be added to the list of targets we have built
previously. If white_too == TRUE add the rule EVEN IF it contains only
an empty string (whitespace is handled by Def_recipe()). */
char *rule;
int white_too;
int no_check;
{
DB_ENTER( "Add_recipe_to_list" );
if( rule != NIL( char ) && (*rule != '\0' || white_too) ) {
DB_PRINT( "par", ("Adding recipe [%s]", rule) );
_sv_crule = Def_recipe( rule, _sv_crule, white_too, no_check );
/* If _sv_rules is not yet set this must be the first recipe line,
* remember it. */
if( _sv_rules == NIL(STRING) )
_sv_rules = _sv_crule;
}
DB_VOID_RETURN;
}
PUBLIC void
Bind_rules_to_targets( flag )/*
===============================
Take the recipe lines we have defined and bind them with proper attributes
to the targets that were previously defined in the parse. The
attributes that get passed here are merged with those that are were
previously defined. (namely attribute F_SINGLE) */
int flag;
{
CELLPTR tg; /* pointer to current target in list */
LINKPTR lp; /* pointer to link cell */
int magic; /* TRUE if target of % or .xxx.yyy form */
int tflag; /* TRUE if we assigned targets here */
DB_ENTER( "Bind_rules_to_targets" );
/* This line is needed since Parse may call us twice when the last
* GROUP rule appears at the end of file. In this case the rules
* have already been bound and we want to ignore them. */
if( _sv_targets == NIL(CELL) ) { DB_VOID_RETURN; }
tflag = FALSE;
flag |= (_sv_flag & F_SINGLE);
flag |= ((_sv_attr & A_GROUP) ? F_GROUP : 0);
for( tg = _sv_targets; tg != NIL(CELL); tg = tg->ce_link ) {
DB_PRINT( "par", ("Binding to %s, %04x", tg->CE_NAME, tg->ce_flag) );
magic = tg->ce_flag & F_PERCENT;
#if 0
/* Check to see if we had a rule of the form '%.o : a.h b.h ; xxx'
* In which case we must build a NULL prq node to hold the recipe */
if( _sv_globprq_only && (_sv_rules != NIL(STRING)) )
_build_graph( _sv_op, tg, NIL(CELL) );
#endif
/* NOTE: For targets that are magic or special we ignore any
* previously defined rules, ie. We throw away the old definition
* and use the new, otherwise we complain. */
if( !(tg->ce_flag & F_MULTI) && !magic && (tg->CE_RECIPE != NIL(STRING))
&& !_sp_target && (_sv_rules != NIL(STRING)) )
Fatal( "Multiply defined recipe for target %s", tg->CE_NAME );
if( (magic || _sp_target) && (_sv_rules == NIL(STRING)) &&
!(tg->ce_flag & F_SPECIAL) && !_sv_globprq_only )
Warning( "Empty recipe for special or meta target %s", tg->CE_NAME );
if( magic ) {
CELLPTR ep;
for( ep=_sv_edgel; ep != NIL(CELL); ep=ep->ce_link ) {
DB_PRINT( "par", ("ep address: %#x", ep) );
/* %.xx :| '%.yy' abc xx '%.tt' ; touch $@
* loops here ... */
_set_attributes( _sv_attr, _sv_setdir, ep );
ep->ce_flag |= (F_TARGET|flag);
if( _sv_rules != NIL(STRING) ) {
ep->ce_recipe = _sv_rules;
ep->ce_indprq = _sv_ind_prq;
}
}
}
else {
tg->ce_attr |= _sv_attr;
tg->ce_flag |= flag;
if( _sv_rules != NIL(STRING) ) {
tg->ce_recipe = _sv_rules;
tg->ce_flag |= F_RULES | F_TARGET;
/* Bind the current set of prerequisites as belonging to the
* original recipe given for the target */
for( lp=tg->ce_prq; lp != NIL(LINK); lp = lp->cl_next )
if( !(lp->cl_flag & F_VISITED) ) lp->cl_flag |= F_TARGET;
}
else for( lp=tg->ce_prq; lp != NIL(LINK); lp = lp->cl_next )
lp->cl_flag |= F_VISITED;
}
tflag |= _add_root(tg);
}
if( tflag ) Target = TRUE;
if( _sv_setdir ) FREE(_sv_setdir);
_sv_rules = NIL(STRING);
_sv_crule = NIL(STRING);
_sv_targets = NIL(CELL);
_sv_ind_prq = NIL(LINK);
_sv_edgel = NIL(CELL);
_sp_target = FALSE;
_sv_globprq_only = 0;
DB_VOID_RETURN;
}
PUBLIC int
Set_group_attributes( list )/*
==============================
Scan list looking for the standard @,-,% and + (as in recipe line
defs) (+ is set but ignored for group recipes)
and set the flags accordingly so that they apply when we bind the
rules to the appropriate targets.
Return TRUE if group recipe start '[' was found, otherwise FALSE. */
char *list;
{
int res = FALSE;
char *s;
if ( !((_sv_attr|Glob_attr)&A_IGNOREGROUP) ) {
s = DmStrSpn(list,"@-%+ \t");
res = (*s == '[');
if( res ) {
/* Check for non-white space characters after the [. */
for( s++; *s && iswhite(*s) ; s++ )
;
if( *s )
Warning("Found non-white space character after '[' in [%s].", list);
_sv_attr |= Rcp_attribute(list);
}
}
return(res);
}
static void
_do_special( special, op, attr, set_dir, target, prereq, state )/*
==================================================================
Process a special target (always only a single target). So far the only
special targets we have are those recognized by the _is_special function.
Some of the special targets can take recipes, they call _do_targets()
and (implicitly) set *state to to RULE_SCAN. Otherwise *state remains
unaffected, i.e. NORMAL_SCAN.
target is always only a single special target.
NOTE: For the cases of .IMPORT, and .INCLUDE, the cells created by the
parser are never freed. This is due to the fact that it is too much
trouble to get them out of the hash table once they are defined, and
if they are per chance used again it will be ok, anyway, since the
cell is not really used by the code below. */
int special;
int op;
t_attr attr;
char *set_dir;
CELLPTR target;
CELLPTR prereq;
int *state;
{
HASHPTR hp; /* pointer to macro def cell */
CELLPTR cp; /* temporary pointer into cells list */
CELLPTR dp; /* pointer to directory dir cell */
LINKPTR lp; /* pointer at prerequisite list */
char *dir; /* current dir to prepend */
char *path; /* resulting path to try to read */
char *name; /* File name for processing a .INCLUDE */
char *tmp; /* temporary string pointer */
FILE *fil; /* File descriptor returned by Openfile */
DB_ENTER( "_do_special" );
target->ce_flag = F_SPECIAL; /* mark the target as special */
switch( special ) {
case ST_EXPORT:
for( ; prereq != NIL(CELL); prereq = prereq->ce_link ) {
DB_PRINT( "par", ("Exporting [%s]", prereq->CE_NAME) );
hp = GET_MACRO( prereq->CE_NAME );
if( hp != NIL(HASH) ) {
char *tmpstr = hp->ht_value;
if( tmpstr == NIL(char) ) tmpstr = "";
if( Write_env_string( prereq->CE_NAME, tmpstr ) != 0 )
Warning( "Could not export %s", prereq->CE_NAME );
}
}
break;
/* Simply cause the parser to fail on the next input read */
case ST_EXIT:
Skip_to_eof = TRUE;
break;
case ST_IMPORT:
for( ; prereq != NIL(CELL); prereq = prereq->ce_link ) {
char *tmpstr;
DB_PRINT( "par", ("Importing [%s]", prereq->CE_NAME) );
if( strcmp(prereq->CE_NAME, ".EVERYTHING") == 0 ) {
t_attr sattr = Glob_attr;
Glob_attr |= A_SILENT;
ReadEnvironment();
Glob_attr = sattr;
}
else {
tmpstr = Read_env_string( prereq->CE_NAME );
if( tmpstr != NIL(char) )
Def_macro(prereq->CE_NAME, tmpstr, M_EXPANDED|M_LITERAL);
else
if( !((Glob_attr | attr) & A_IGNORE) )
Fatal("Imported macro `%s' not found",prereq->CE_NAME);
}
}
attr &= ~A_IGNORE;
break;
case ST_INCLUDE:
{
int pushed = FALSE;
int first = (attr & A_FIRST);
int ignore = (((Glob_attr | attr) & A_IGNORE) != 0);
int found = FALSE;
int noinf = (attr & A_NOINFER);
LINKPTR prqlnk = NIL(LINK);
LINKPTR prqlst = NIL(LINK);
if( prereq == NIL(CELL) ) Fatal( "No .INCLUDE file(s) specified" );
dp = Def_cell( ".INCLUDEDIRS" );
if( (attr & A_SETDIR) && *(dir = strchr(set_dir, '=')+1) )
pushed = Push_dir( dir, ".INCLUDE", ignore );
for( cp=prereq; cp != NIL(CELL); cp = cp->ce_link ) {
LINKPTR ltmp;
TALLOC(ltmp, 1, LINK);
ltmp->cl_prq = cp;
if( prqlnk == NIL(LINK) )
prqlst = ltmp;
else
prqlnk->cl_next = ltmp;
prqlnk = ltmp;
}
for( ; prqlst != NIL(LINK); FREE(prqlst), prqlst=prqlnk ) {
prqlnk = prqlst->cl_next;
cp = prqlst->cl_prq;
name = cp->CE_NAME;
/* Leave this here, it ensures that prqlst gets propely free'd */
if ( first && found )
continue;
if( *name == '<' ) {
/* We have a file name enclosed in <....>
* so get rid of the <> arround the file name */
name++;
if( (tmp = strrchr( name, '>' )) != NIL( char ) )
*tmp = 0;
if( If_root_path( name ) )
fil = Openfile( name, FALSE, FALSE );
else
fil = NIL(FILE);
}
else
fil = Openfile( name, FALSE, FALSE );
if( fil == NIL(FILE) && !If_root_path( name ) ) { /*if true ==> not found in current dir*/
/* Now we must scan the list of prerequisites for .INCLUDEDIRS
* looking for the file in each of the specified directories.
* if we don't find it then we issue an error. The error
* message is suppressed if the .IGNORE attribute of attr is
* set. If a file is found we call Parse on the file to
* perform the parse and then continue on from where we left
* off. */
for(lp=dp->CE_PRQ; lp && fil == NIL(FILE); lp=lp->cl_next) {
dir = lp->cl_prq->CE_NAME;
if( strchr(dir, '$') ) dir = Expand(dir);
path = Build_path( dir, name );
DB_PRINT( "par", ("Trying to include [%s]", path) );
fil = Openfile( path, FALSE, FALSE );
if( dir != lp->cl_prq->CE_NAME ) FREE(dir);
}
}
if (!noinf && fil == NIL(FILE)) {
t_attr glob = Glob_attr;
t_attr cattr = prqlst->cl_prq->ce_attr;
prqlst->cl_next = NIL(LINK);
Glob_attr |= (attr&A_IGNORE);
prqlst->cl_prq->ce_attr &= ~A_FRINGE;
if( Verbose & V_FILE_IO )
printf( "%s: Inferring include file [%s].\n",
Pname, name );
fil = TryFiles(prqlst);
Glob_attr = glob;
prqlst->cl_prq->ce_attr |= (cattr & A_FRINGE);
}
if( fil != NIL(FILE) ) {
if( Verbose & V_FILE_IO )
printf( "%s: Parsing include file [%s].\n",
Pname, name );
Parse( fil );
found = TRUE;
}
else if( !(ignore || first) )
Fatal( "Include file %s, not found", name );
else if( Verbose & V_FILE_IO )
printf( "%s: Include file [%s] was not found.\n",
Pname, name );
}
if ( !ignore && first && !found )
Fatal( "No include file was found" );
if( pushed ) Pop_dir(FALSE);
attr &= ~(A_IGNORE|A_SETDIR|A_FIRST|A_NOINFER);
}
break;
case ST_SOURCE:
if( prereq != NIL(CELL) )
_do_targets( op & (R_OP_CL | R_OP_MI | R_OP_UP), attr, set_dir,
target, prereq );
else {
/* The old semantics of .SOURCE were that an empty list of
* prerequisites clears the .SOURCE list. So we must implement
* that here as a clearout prerequisite operation. Since this is
* a standard operation with the :- opcode we can simply call the
* proper routine with the target cell and it should do the trick
*/
if( op == R_OP_CL || (op & R_OP_MI) )
Clear_prerequisites( target );
}
op &= ~(R_OP_MI | R_OP_UP);
break;
case ST_KEEP:
if( Keep_state != NIL(char) ) break;
Def_macro( ".KEEP_STATE", "_state.mk", M_EXPANDED );
break;
case ST_REST:
/* The rest of the special targets can all take recipes, as such they
* must be able to affect the state of the parser. */
{
int s_targ = Target;
Target = TRUE;
_sp_target = TRUE;
*state = _do_targets( op, attr, set_dir, target, prereq );
Target = s_targ;
target->ce_flag |= F_TARGET;
attr = A_DEFAULT;
op = R_OP_CL;
}
break;
default:break;
}
if( op != R_OP_CL ) Warning( "Modifier(s) for operator ignored" );
if( attr != A_DEFAULT ) Warning( "Extra attributes ignored" );
DB_VOID_RETURN;
}
static int
_do_targets( op, attr, set_dir, targets, prereq )/*
===================================================
Evaluate the values derived from the current target definition
line. Helper functions _build_graph(), _do_magic(), _make_multi(),
_add_root(), _replace_cell(), _set_attributes(), Clear_prerequisites()
_stick_at_head(), Add_prerequisite() and _set_global_attr() are used.
If successfull "_sv_targets" is set to "targets".
Return RULE_SCAN if a recipe is expected to follow, otherwise
NORMAL_SCAN. */
int op; /* rule operator */
t_attr attr; /* attribute flags for current targets */
char *set_dir; /* value of setdir attribute */
CELLPTR targets; /* list of targets (each cell maybe already
* defined by a previous target definition
* line. */
CELLPTR prereq; /* list of prerequisites */
{
CELLPTR tg1; /* temporary target pointer */
CELLPTR tp1; /* temporary prerequisite pointer */
LINKPTR prev_cell; /* pointer for .UPDATEALL processing */
char *p; /* temporary char pointer */
int tflag = FALSE; /* set to TRUE if we add target to root */
int ret_state = RULE_SCAN; /* Return state */
DB_ENTER( "_do_targets" );
/* If .UPDATEALL is set sort the target list that was temporary linked
* with ce_link into a list using ce_link with ce_set pointing to the first
* element. */
/* FIXME: Check that .UPDATEALL and %-targets on one line work together. */
if( attr & A_UPDATEALL ) {
if( targets == NIL(CELL) )
Fatal( ".UPDATEALL attribute requires non-empty list of targets" );
if (targets->ce_set == NIL(CELL)) {
for(
prev_cell=CeMeToo(targets),tg1=targets->ce_link;
tg1 != NIL(CELL);
tg1=tg1->ce_link
) {
if (tg1->ce_set)
Fatal( "Target [%s] appears on multiple .UPDATEALL lists",
tg1->CE_NAME);
tg1->ce_set = targets;
TALLOC(prev_cell->cl_next, 1, LINK);
prev_cell = prev_cell->cl_next;
prev_cell->cl_prq = tg1;
}
targets->ce_set = targets;
}
else {
LINKPTR ap;
CELLPTR tp;
tp = targets;
ap = CeMeToo(targets);
while (ap && tp && ap->cl_prq == tp && tp->ce_set == targets) {
ap = ap->cl_next;
tp = tp->ce_link;
}
if (ap || tp)
Fatal("Inconsistent .UPDATEALL lists for target [%s]",
targets->CE_NAME);
}
targets->ce_link = NIL(CELL);
}
for( tg1 = targets; tg1 != NIL(CELL); tg1 = tg1->ce_link ) {
/* Check if tg1 is already marked as a %-target, but not a magic
* (.xxx.yyy) target. */
int purepercent = (tg1->ce_flag & F_PERCENT) && !(tg1->ce_flag & F_MAGIC);
/* Check each target. Check for inconsistencies between :: and : rule
* sets. :: may follow either : or :: but not the reverse.
*
* Any F_MULTI target (contains :: rules) is represented by a prerequisite
* list hanging off the main target cell where each of the prerequisites
* is a copy of the target cell but is not entered into the hash table.
*/
if( !(op & R_OP_DCL ) && (tg1->ce_flag & F_MULTI) && !purepercent )
Fatal( "':' vs '::' inconsistency in rules for %s", tg1->CE_NAME );
if( purepercent ) {
/* Handle %-targets. */
CELLPTR cur;
CELLPTR tpq = NIL(CELL);
CELLPTR nprq = NULL;
#ifdef DBUG
DB_PRINT( "%", ("Handling %%-target [%s : : <prerequisites follow, maybe empty>]",
tg1->CE_NAME) );
for(cur=prereq;cur;cur=cur->ce_link) {
DB_PRINT( "%", (" %%-prerequisites : %s ",
cur->CE_NAME ? cur->CE_NAME : "<empty>") );
}
#endif
/* Handle indirect (global) prerequisites first. */
for(cur=prereq;cur;cur=cur->ce_link) {
char *name = cur->CE_NAME;
int len = strlen(name);
if( *name == '\'' && name[len-1]=='\'' ){
name[len-1] = '\0';
len = strlen(name+1)+1;
memmove(name,name+1,len);
/* add indirect prerequisite */
_add_indirect_prereq( cur );
}
else {
/* Sort all "other" prerequisits into tpq, with nprq
* pointing to the first element. */
if (tpq)
tpq->ce_link = cur;
else
nprq = cur;
tpq = cur;
}
}
/* Mark the last element of nprq. */
if(tpq)
tpq->ce_link=NIL(CELL);
else
nprq = NIL(CELL);
/* Handle "normal" prerequisites now. */
if ( op & R_OP_OR ) {
/* for op == ':|' transform:
* <%-target> :| <prereq_1> ... <prereq_n> ; <recipe>
* into:
* <%-target> : <prereq_1> ; <recipe>
* ..
* <%-target> : <prereq_n> ; <recipe>
*/
for(tp1=nprq; tp1; tp1=tp1->ce_link) {
CELLPTR tmpcell = tp1->ce_link;
tp1->ce_link = NIL(CELL);
_build_graph(op,tg1,tp1);
tp1->ce_link = tmpcell;
}
}
else {
/* The inference mechanism for %-targets limits the number of
* (non-indirect) prerequisite to one, but an unlimited number
* of indirect prerequisites is possible. */
if ( nprq && nprq->ce_link && !(op & R_OP_OR))
Warning("More than one prerequisite\n"
"for %%-target. Use :| ruleop or indirect prerequisites.");
_build_graph(op,tg1,nprq);
}
}
else if( tg1->ce_flag & F_MAGIC &&
(p = _is_magic( tg1->CE_NAME )) != NIL(char) &&
_do_magic( op, p, tg1, prereq, attr, set_dir ) )
; /* _do_magic() does all that is needed (if return value is TRUE). */
else if( op & R_OP_DCL ) { /* op == :: */
CELLPTR tmp_cell = _make_multi(tg1);
/* Add the F_MULTI master to .TARGETS (If not set already).
* Do this here so that the member cell is not added instead
* when the recipies are bound in Bind_rules_to_targets(). */
tflag |= _add_root(tg1);
/* Replace the F_MULTI master with the member cell. */
targets = _replace_cell( targets, tg1, tmp_cell );
/* We have to set (add) the attributes also for the F_MULTI master
* target cell. As there is no recipe the setdir value is not
* needed. _set_attributes() that follows in approx. 8 lines
* will set the attributes for the F_MULTI member cell. */
tg1->ce_attr |= (attr & ~A_SETDIR);
/* Now switch tg1 to the current (F_MULTI prereq.) target.
* All recipes have to be added to that cell and not to the
* F_MULTI master. */
tg1 = tmp_cell;
}
if( !purepercent ) _set_attributes( attr, set_dir, tg1 );
/* Build the proper prerequisite list of the target. If the `-',
* modifier was used clear the prerequisite list before adding any
* new prerequisites. Else add them to the head/tail as appropriate.
*
* If the target has F_PERCENT set then no prerequisites are used. */
if( !(tg1->ce_flag & F_PERCENT) ) {
if( op & R_OP_MI ) Clear_prerequisites( tg1 ); /* op == :- */