/* * Copyright 1993, 1995 Christopher Seiwald. * * This file is part of Jam - see jam.c for Copyright information. */ /* * make.c - bring a target up to date, once rules are in place * * This modules controls the execution of rules to bring a target and * its dependencies up to date. It is invoked after the targets, rules, * et. al. described in rules.h are created by the interpreting of the * jam files. * * This file contains the main make() entry point and the first pass * make0(). The second pass, make1(), which actually does the command * execution, is in make1.c. * * External routines: * make() - make a target, given its name * * Internal routines: * make0() - bind and scan everything to make a TARGET * make0sort() - reorder TARGETS chain by their time (newest to oldest) * * 12/26/93 (seiwald) - allow NOTIME targets to be expanded via $(<), $(>) * 01/04/94 (seiwald) - print all targets, bounded, when tracing commands * 04/08/94 (seiwald) - progress report now reflects only targets with actions * 04/11/94 (seiwald) - Combined deps & headers into deps[2] in TARGET. * 12/20/94 (seiwald) - NOTIME renamed NOTFILE. * 12/20/94 (seiwald) - make0() headers after determining fate of target, so * that headers aren't seen as dependents on themselves. * 01/19/95 (seiwald) - distinguish between CANTFIND/CANTMAKE targets. * 02/02/95 (seiwald) - propagate leaf source time for new LEAVES rule. * 02/14/95 (seiwald) - NOUPDATE rule means don't update existing target. * 08/22/95 (seiwald) - NOUPDATE targets immune to anyhow (-a) flag. * 09/06/00 (seiwald) - NOCARE affects targets with sources/actions. * 03/02/01 (seiwald) - reverse NOCARE change. * 03/14/02 (seiwald) - TEMPORARY targets no longer take on parents age * 03/16/02 (seiwald) - support for -g (reorder builds by source time) * 07/17/02 (seiwald) - TEMPORARY sources for headers now get built * 09/19/02 (seiwald) - new -d displays * 09/23/02 (seiwald) - suppress "...using temp..." in default output * 09/28/02 (seiwald) - make0() takes parent pointer; new -dc display * 11/04/02 (seiwald) - const-ing for string literals * 12/03/02 (seiwald) - fix odd includes support by grafting them onto depends * 12/17/02 (seiwald) - new copysettings() to protect target-specific vars * 01/03/03 (seiwald) - T_FATE_NEWER once again gets set with missing parent * 01/14/03 (seiwald) - fix includes fix with new internal includes TARGET * 04/04/03 (seiwald) - fix INTERNAL node binding to avoid T_BIND_PARENTS */ # include "jam.h" # include "lists.h" # include "parse.h" # include "variable.h" # include "rules.h" # include "search.h" # include "newstr.h" # include "make.h" # include "headers.h" # include "command.h" #ifdef OPT_HEADER_CACHE_EXT #include "hcache.h" #endif # ifndef max # define max( a,b ) ((a)>(b)?(a):(b)) # endif typedef struct { int temp; int updating; int cantfind; int cantmake; int targets; int made; } COUNTS ; static void make0( TARGET *t, TARGET *p, int depth, COUNTS *counts, int anyhow ); static TARGETS *make0sort( TARGETS *c ); static const char *target_fate[] = { "init", /* T_FATE_INIT */ "making", /* T_FATE_MAKING */ "stable", /* T_FATE_STABLE */ "newer", /* T_FATE_NEWER */ "temp", /* T_FATE_ISTMP */ "touched", /* T_FATE_TOUCHED */ "missing", /* T_FATE_MISSING */ "needtmp", /* T_FATE_NEEDTMP */ "old", /* T_FATE_OUTDATED */ "update", /* T_FATE_UPDATE */ "nofind", /* T_FATE_CANTFIND */ "nomake" /* T_FATE_CANTMAKE */ } ; static const char *target_bind[] = { "unbound", "missing", "parents", "exists", } ; # define spaces(x) ( " " + 16 - ( x > 16 ? 16 : x ) ) /* * make() - make a target, given its name */ int make( int n_targets, const char **targets, int anyhow ) { int i; COUNTS counts[1]; int status = 0; /* 1 if anything fails */ #ifdef OPT_HEADER_CACHE_EXT hcache_init(); #endif memset( (char *)counts, 0, sizeof( *counts ) ); for( i = 0; i < n_targets; i++ ) { TARGET *t = bindtarget( targets[i] ); make0( t, 0, 0, counts, anyhow ); } if( DEBUG_MAKE ) { if( counts->targets ) printf( "...found %d target(s)...\n", counts->targets ); if( counts->temp ) printf( "...using %d temp target(s)...\n", counts->temp ); if( counts->updating ) printf( "...updating %d target(s)...\n", counts->updating ); if( counts->cantfind ) printf( "...can't find %d target(s)...\n", counts->cantfind ); if( counts->cantmake ) printf( "...can't make %d target(s)...\n", counts->cantmake ); } #ifdef OPT_HEADER_CACHE_EXT hcache_done(); #endif #ifdef OPT_IMPROVED_PROGRESS_EXT globs.updating = counts->updating; time( &globs.start ); #endif status = counts->cantfind || counts->cantmake; for( i = 0; i < n_targets; i++ ) status |= make1( bindtarget( targets[i] ) ); return status; } /* * make0() - bind and scan everything to make a TARGET * * Make0() recursively binds a target, searches for #included headers, * calls itself on those headers, and calls itself on any dependents. */ static void make0( TARGET *t, TARGET *p, /* parent */ int depth, /* for display purposes */ COUNTS *counts, /* for reporting */ int anyhow ) /* forcibly touch all (real) targets */ { TARGETS *c, *d, *incs; TARGET *ptime = t; time_t last, leaf, hlast; int fate; const char *flag = ""; SETTINGS *s; /* * Step 1: initialize */ if( DEBUG_MAKEPROG ) printf( "make\t--\t%s%s\n", spaces( depth ), t->name ); t->fate = T_FATE_MAKING; /* * Step 2: under the influence of "on target" variables, * bind the target and search for headers. */ /* Step 2a: set "on target" variables. */ s = copysettings( t->settings ); pushsettings( s ); /* Step 2b: find and timestamp the target file (if it's a file). */ if( t->binding == T_BIND_UNBOUND && !( t->flags & T_FLAG_NOTFILE ) ) { t->boundname = search( t->name, &t->time ); t->binding = t->time ? T_BIND_EXISTS : T_BIND_MISSING; } /* INTERNAL, NOTFILE header nodes have the time of their parents */ if( p && t->flags & T_FLAG_INTERNAL ) ptime = p; /* If temp file doesn't exist but parent does, use parent */ if( p && t->flags & T_FLAG_TEMP && t->binding == T_BIND_MISSING && p->binding != T_BIND_MISSING ) { t->binding = T_BIND_PARENTS; ptime = p; } /* Step 2c: If its a file, search for headers. */ if( t->binding == T_BIND_EXISTS ) headers( t ); /* Step 2d: reset "on target" variables */ popsettings( s ); freesettings( s ); /* * Pause for a little progress reporting */ if( DEBUG_MAKEPROG ) { if( strcmp( t->name, t->boundname ) ) { printf( "bind\t--\t%s%s: %s\n", spaces( depth ), t->name, t->boundname ); } switch( t->binding ) { case T_BIND_UNBOUND: case T_BIND_MISSING: case T_BIND_PARENTS: printf( "time\t--\t%s%s: %s\n", spaces( depth ), t->name, target_bind[ t->binding ] ); break; case T_BIND_EXISTS: printf( "time\t--\t%s%s: %s", spaces( depth ), t->name, ctime( &t->time ) ); break; } } /* * Step 3: recursively make0() dependents & headers */ /* Step 3a: recursively make0() dependents */ for( c = t->depends; c; c = c->next ) { int internal = t->flags & T_FLAG_INTERNAL; if( DEBUG_DEPENDS ) printf( "%s \"%s\" : \"%s\" ;\n", internal ? "Includes" : "Depends", t->name, c->target->name ); /* Warn about circular deps, except for includes, */ /* which include each other alot. */ if( c->target->fate == T_FATE_INIT ) make0( c->target, ptime, depth + 1, counts, anyhow ); else if( c->target->fate == T_FATE_MAKING && !internal ) printf( "warning: %s depends on itself\n", c->target->name ); } /* Step 3b: recursively make0() internal includes node */ if( t->includes ) make0( t->includes, p, depth + 1, counts, anyhow ); /* Step 3c: add dependents' includes to our direct dependencies */ incs = 0; for( c = t->depends; c; c = c->next ) if( c->target->includes ) incs = targetentry( incs, c->target->includes ); t->depends = targetchain( t->depends, incs ); /* * Step 4: compute time & fate */ /* Step 4a: pick up dependents' time and fate */ last = 0; leaf = 0; fate = T_FATE_STABLE; for( c = t->depends; c; c = c->next ) { /* If LEAVES has been applied, we only heed the timestamps of */ /* the leaf source nodes. */ leaf = max( leaf, c->target->leaf ); if( t->flags & T_FLAG_LEAVES ) { last = leaf; continue; } last = max( last, c->target->time ); fate = max( fate, c->target->fate ); } /* Step 4b: pick up included headers time */ /* * If a header is newer than a temp source that includes it, * the temp source will need building. */ hlast = t->includes ? t->includes->time : 0; /* Step 4c: handle NOUPDATE oddity */ /* * If a NOUPDATE file exists, make dependents eternally old. * Don't inherit our fate from our dependents. Decide fate * based only upon other flags and our binding (done later). */ if( t->flags & T_FLAG_NOUPDATE ) { last = 0; t->time = 0; fate = T_FATE_STABLE; } /* Step 4d: determine fate: rebuild target or what? */ /* In English: If can't find or make child, can't make target. If children changed, make target. If target missing, make it. If children newer, make target. If temp's children newer than parent, make temp. If temp's headers newer than parent, make temp. If deliberately touched, make it. If up-to-date temp file present, use it. If target newer than non-notfile parent, mark target newer. Otherwise, stable! Note this block runs from least to most stable: as we make it further down the list, the target's fate is getting stabler. */ if( fate >= T_FATE_BROKEN ) { fate = T_FATE_CANTMAKE; } else if( fate >= T_FATE_SPOIL ) { fate = T_FATE_UPDATE; } else if( t->binding == T_BIND_MISSING ) { fate = T_FATE_MISSING; } else if( t->binding == T_BIND_EXISTS && last > t->time ) { fate = T_FATE_OUTDATED; } else if( t->binding == T_BIND_PARENTS && last > p->time ) { fate = T_FATE_NEEDTMP; } else if( t->binding == T_BIND_PARENTS && hlast > p->time ) { fate = T_FATE_NEEDTMP; } else if( t->flags & T_FLAG_TOUCHED ) { fate = T_FATE_TOUCHED; } else if( anyhow && !( t->flags & T_FLAG_NOUPDATE ) ) { fate = T_FATE_TOUCHED; } else if( t->binding == T_BIND_EXISTS && t->flags & T_FLAG_TEMP ) { fate = T_FATE_ISTMP; } else if( t->binding == T_BIND_EXISTS && p && p->binding != T_BIND_UNBOUND && t->time > p->time ) { fate = T_FATE_NEWER; } else { fate = T_FATE_STABLE; } /* Step 4e: handle missing files */ /* If it's missing and there are no actions to create it, boom. */ /* If we can't make a target we don't care about, 'sokay */ /* We could insist that there are updating actions for all missing */ /* files, but if they have dependents we just pretend it's NOTFILE. */ if( fate == T_FATE_MISSING && !t->actions && !t->depends ) { if( t->flags & T_FLAG_NOCARE ) { fate = T_FATE_STABLE; } else { printf( "don't know how to make %s\n", t->name ); fate = T_FATE_CANTFIND; } } /* Step 4f: propagate dependents' time & fate. */ /* Set leaf time to be our time only if this is a leaf. */ t->time = max( t->time, last ); t->leaf = leaf ? leaf : t->time ; t->fate = fate; /* * Step 5: sort dependents by their update time. */ if( globs.newestfirst ) t->depends = make0sort( t->depends ); /* * Step 6: a little harmless tabulating for tracing purposes */ /* Don't count or report interal includes nodes. */ if( t->flags & T_FLAG_INTERNAL ) return; #ifdef OPT_IMPROVED_PATIENCE_EXT ++counts->targets; #else if( !( ++counts->targets % 1000 ) && DEBUG_MAKE ) printf( "...patience...\n" ); #endif if( fate == T_FATE_ISTMP ) counts->temp++; else if( fate == T_FATE_CANTFIND ) counts->cantfind++; else if( fate == T_FATE_CANTMAKE && t->actions ) counts->cantmake++; else if( fate >= T_FATE_BUILD && fate < T_FATE_BROKEN && t->actions ) counts->updating++; if( !( t->flags & T_FLAG_NOTFILE ) && fate >= T_FATE_SPOIL ) flag = "+"; else if( t->binding == T_BIND_EXISTS && p && t->time > p->time ) flag = "*"; if( DEBUG_MAKEPROG ) printf( "made%s\t%s\t%s%s\n", flag, target_fate[ t->fate ], spaces( depth ), t->name ); if( DEBUG_CAUSES && t->fate >= T_FATE_NEWER && t->fate <= T_FATE_MISSING ) printf( "%s %s\n", target_fate[ t->fate ], t->name ); } /* * make0sort() - reorder TARGETS chain by their time (newest to oldest) */ static TARGETS * make0sort( TARGETS *chain ) { TARGETS *result = 0; /* We walk chain, taking each item and inserting it on the */ /* sorted result, with newest items at the front. This involves */ /* updating each TARGETS' c->next and c->tail. Note that we */ /* make c->tail a valid prev pointer for every entry. Normally, */ /* it is only valid at the head, where prev == tail. Note also */ /* that while tail is a loop, next ends at the end of the chain. */ /* Walk current target list */ while( chain ) { TARGETS *c = chain; TARGETS *s = result; chain = chain->next; /* Find point s in result for c */ while( s && s->target->time > c->target->time ) s = s->next; /* Insert c in front of s (might be 0). */ /* Don't even think of deciphering this. */ c->next = s; /* good even if s = 0 */ if( result == s ) result = c; /* new head of chain? */ if( !s ) s = result; /* wrap to ensure a next */ if( result != c ) s->tail->next = c; /* not head? be prev's next */ c->tail = s->tail; /* take on next's prev */ s->tail = c; /* make next's prev us */ } return result; }
# | Change | User | Description | Committed | |
---|---|---|---|---|---|
#20 | 4632 | Matt Armstrong | An OPT_SEMAPHORE feature stolen from Craig McPheeters. | ||
#19 | 4336 | Matt Armstrong |
Fix bug for strange make.c and RULE_UPDATED interaction. If you have a rule with flag RULE_UPDATED, then any dependents must have fate greater than T_FATE_STABLE to be included. However, make.c can get confused for dependency trees like this: a --> b --> d \-> c --> d In this case, make.c can set the fate of "d" before it ever gets to "c". So you will end up with a T_FATE_MISSING target "c" with dependents with T_FATE_STABLE. If "c" happens to have a RULE_UPDATED action, RULE_UPDATED, make1list() will refrain from including it in the list of targets. We hack around this here by explicitly checking for this case and manually tweaking the dependents fate to at least T_FATE_NEWER. An alternate fix is to modify make1cmds() to take a TARGET* instead of an ACTIONS* and, when the target is T_FATE_MISSING, have it mask off the RULE_UPDATED flag when calling make1list(). |
||
#18 | 4045 | Matt Armstrong |
patchlevel a.t - take the public perfoce depot's change 4044. Change 4044 by matt_armstrong@matt_armstrong-jrukman-jam on 2003/12/23 17:03:13 Fix //guest/matt_armstrong/jam/bug/3/... (as well as 2/... and 1/...). Introduce a pass *before* make0() that propagates INCLUDES relationships fully thruout the dependency graph. bug/3 was caused by make0 trying to do too much at once. You can't properly deal with cycles in the INCLUDES graph and correctly determine dependencies in one pass. We now have three passes through the dependency graph in make.c 1) make0bscan() - bind and scan all targets in the tree 2) make0includes() - gather all INCLUDES from sub-INCLUDES in a way that is safe from cycles in the INCLUDES graph. 3) make0() - fate determination TODO: verify correct bindtarget() use in make0bscan() and make0includes() Affected files ... ... //guest/matt_armstrong/jam/fix/2/make.c#7 edit ... //guest/matt_armstrong/jam/fix/2/rules.h#6 edit |
||
#17 | 4018 | Matt Armstrong |
Take //guest/matt_armstrong/jam/fix/2/... changes (again). |
||
#16 | 4004 | Matt Armstrong |
Back out changes 3969, 3971, 3972 -- they didn't really fix anything. |
||
#15 | 3972 | Matt Armstrong |
bootstrap integrations from //guest/matt_armstrong/jam/fix/2/... (no code change) |
||
#14 | 3971 | Matt Armstrong |
Take //guest/matt_armstrong/jam/fix/2/... changes. |
||
#13 | 3969 | Matt Armstrong |
Integrate from //guest/matt_armstrong/jam/fix/2/...@3963 -- no real changes. |
||
#12 | 3950 | Matt Armstrong |
Integrate from //guest/matt_armstrong/jam/fix/1/... thru change 3948 and make no changes. |
||
#11 | 3661 | Matt Armstrong | improve progress indication | ||
#10 | 3516 | Matt Armstrong |
Steal OPT_INTERRUPT_FIX and re-steal OPT_GRAPH_DEBUG_EXT from Craig. |
||
#9 | 3323 | Matt Armstrong |
Attempt to fix the -g bug's interaction with the "first" pseudotarget by not sorting the children of NOTFILE targets. |
||
#8 | 3311 | Matt Armstrong | Update from mainline. | ||
#7 | 2860 | Matt Armstrong | Integrate from mainline. | ||
#6 | 2817 | Matt Armstrong | Update with current known working version. | ||
#5 | 2816 | Matt Armstrong |
Integrate from mainline. This does not compile. |
||
#4 | 2507 | Matt Armstrong | update from the mainline | ||
#3 | 2089 | Matt Armstrong | More integrations from upstream. | ||
#2 | 1271 | Matt Armstrong |
This is "my" custom version of Jam. See the LOCAL_DIFFERENCES.txt file for a description of differences from the upstream jam. |
||
#1 | 1270 | Matt Armstrong | In prep for publishing all my patches to jam. | ||
//guest/perforce_software/jam/src/make.c | |||||
#4 | 556 | Perforce staff |
Patch release jam 2.3.2: reverse NOCARE change. NOCARE once again applies to targets with source and/or actions, so that buildable header files get built. |
||
#3 | 486 | Perforce staff |
Jam 2.3. See RELNOTES for a list of changes from 2.2.x. Just about every source file was touched when jam got ANSI-fied. |
||
#2 | 214 | Perforce staff |
Peter Glasscock's NOUPDATE fix, so that a missing dependency doesn't force the update of a NOUPDATE target. NOUPDATE targets should only be updated if they don't exist. |
||
#1 | 2 | laura | Add Jam/MR 2.2 source |