11 nproc(); /* it can be updated dynamically */
12 nrep(); /* it can be updated dynamically */
16 dumpn("new target\n", node);
20 while(node->flags&NOTMADE){
21 if(work(node, (Node *)0, (Arc *)0))
22 did = 1; /* found something to do */
24 if(waitup(1, (int *)0) > 0){
25 if(node->flags&(NOTMADE|BEINGMADE)){
26 assert(/*must be run errors*/ runerrs);
27 break; /* nothing more waiting */
32 if(node->flags&BEINGMADE)
36 assert(/*target didnt get done*/ runerrs || (node->flags&MADE));
38 Bprint(&bout, "mk: '%s' is up to date\n", node->name);
46 n->flags &= ~(CANPRETEND|PRETENDING);
47 if(strchr(n->name, '(') ==0 || n->time)
48 n->flags |= CANPRETEND;
50 for(a = n->prereqs; a; a = a->next)
59 n->flags &= ~(CANPRETEND|PRETENDING);
64 work(Node *node, Node *p, Arc *parc)
72 /*print("work(%s) flags=0x%x time=%ld\n", node->name, node->flags, node->time);/**/
73 if(node->flags&BEINGMADE)
75 if((node->flags&MADE) && (node->flags&PRETENDING) && p && outofdate(p, parc, 0)){
77 fprint(1, "unpretending %s(%ld) because %s is out of date(%ld)\n",
78 node->name, node->time, p->name, p->time);
82 have a look if we are pretending in case
83 someone has been unpretended out from underneath us
86 if(node->flags&PRETENDING){
91 /* consider no prerequisite case */
92 if(node->prereqs == 0){
94 if(getwd(cwd, sizeof cwd))
95 fprint(2, "mk: don't know how to make '%s' in directory %s\n", node->name, cwd);
97 fprint(2, "mk: don't know how to make '%s'\n", node->name);
99 node->flags |= BEINGMADE;
108 now see if we are out of date or what
113 for(a = node->prereqs; a; a = a->next)
115 did = work(a->n, node, a) || did;
116 if(a->n->flags&(NOTMADE|BEINGMADE))
118 if(outofdate(node, a, 0)){
120 if((ra == 0) || (ra->n == 0)
121 || (ra->n->time < a->n->time))
131 if(ready == 0) /* can't do anything now */
133 if(weoutofdate == 0){
138 can we pretend to be made?
140 if((iflag == 0) && (node->time == 0) && (node->flags&(PRETENDING|CANPRETEND))
141 && p && ra->n && !outofdate(p, ra, 0)){
142 node->flags &= ~CANPRETEND;
144 if(explain && ((node->flags&PRETENDING) == 0))
145 fprint(1, "pretending %s has time %ld\n", node->name, node->time);
146 node->flags |= PRETENDING;
150 node is out of date and we REALLY do have to do something.
151 quickly rescan for pretenders
153 for(a = node->prereqs; a; a = a->next)
154 if(a->n && (a->n->flags&PRETENDING)){
156 Bprint(&bout, "unpretending %s because of %s because of %s\n",
157 a->n->name, node->name, ra->n? ra->n->name : "rule with no prerequisites");
160 did = work(a->n, node, a) || did;
163 if(ready == 0) /* try later unless nothing has happened for -k's sake */
164 return(did || work(node, p, parc));
165 did = dorecipe(node) || did;
170 update(int fake, Node *node)
174 MADESET(node, fake? BEINGMADE : MADE);
175 if(((node->flags&VIRTUAL) == 0) && (access(node->name, 0) == 0)){
176 node->time = timeof(node->name, 1);
177 node->flags &= ~(CANPRETEND|PRETENDING);
178 for(a = node->prereqs; a; a = a->next)
180 outofdate(node, a, 1);
183 for(a = node->prereqs; a; a = a->next)
184 if(a->n && outofdate(node, a, 1))
185 node->time = a->n->time;
187 /* print("----node %s time=%ld flags=0x%x\n", node->name, node->time, node->flags);/**/
191 pcmp(char *prog, char *p, char *q)
193 char buf[3*NAMEBLOCK];
197 snprint(buf, sizeof buf, "%s '%s' '%s'\n", prog, p, q);
198 pid = pipecmd(buf, 0, 0);
199 while(waitup(-3, &pid) >= 0)
205 outofdate(Node *node, Arc *arc, int eval)
207 char buf[3*NAMEBLOCK], *str;
213 snprint(buf, sizeof buf, "%s%c%s", node->name, 0377,
215 sym = symlook(buf, S_OUTOFDATE, 0);
216 if(sym == 0 || eval){
219 ret = pcmp(arc->prog, node->name, arc->n->name);
223 symlook(str, S_OUTOFDATE, (void *)ret);
227 } else if(strchr(arc->n->name, '(') && arc->n->time == 0) /* missing archive member */
231 * Treat equal times as out-of-date.
232 * It's a race, and the safer option is to do
233 * extra building rather than not enough.
235 return node->time <= arc->n->time;