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
status = counts->cantfind || counts->cantmake;
for( i = 0; i < n_targets; i++ )
status |= make1( bindtarget( targets[i] ) );
return status;
}
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;
#ifdef OPT_GRAPH_DEBUG_EXT
int savedFate, oldTimeStamp;
#endif
if( DEBUG_MAKEPROG )
printf( "make\t--\t%s%s\n", spaces( depth ), t->name );
/*
* 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 ) )
{
char* another_target;
t->boundname = search( t->name, &t->time, &another_target );
/* If it was detected that this target refers to an already
existing and bound one, we add include dependency, so that
every target which depends on us will depend on that other
target. */
if( another_target )
{
TARGET* includes;
if (!t->includes) {
t->includes = copytarget(t);
t->includes->original_target = t;
}
includes = t->includes;
includes->depends = targetlist( includes->depends,
list_new( L0, another_target ) );
}
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;
}
#ifdef OPT_SEMAPHORE
{
LIST *var = var_get( "JAM_SEMAPHORE" );
if( var )
{
TARGET *semaphore = bindtarget( var->string );
semaphore->progress = T_MAKE_SEMAPHORE;
t->semaphore = semaphore;
}
}
#endif
/* 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_BIND )
{
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;
/* Seems like it's not relevant for us....
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 );
#ifdef OPT_GRAPH_DEBUG_EXT
if( DEBUG_FATE )
if( fate < c->target->fate )
printf( "fate change %s from %s to %s by dependency %s\n",
t->name,
target_fate[fate], target_fate[c->target->fate],
c->target->name);
#endif
}
/* 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 )
{
#ifdef OPT_GRAPH_DEBUG_EXT
if( DEBUG_FATE )
if( fate != T_FATE_STABLE )
printf( "fate change %s back to stable, NOUPDATE.\n",
t->name);
#endif
last = 0;
t->time = 0;
/*
* Don't inherit our fate from our dependents. Decide fate
* based only upon other flags and our binding (done later).
*/
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.
*/
#ifdef OPT_GRAPH_DEBUG_EXT
savedFate = fate;
oldTimeStamp = 0;
#endif
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 )
{
#ifdef OPT_GRAPH_DEBUG_EXT
oldTimeStamp = 1;
#endif
fate = T_FATE_OUTDATED;
}
else if( t->binding == T_BIND_PARENTS && last > p->time )
{
#ifdef OPT_GRAPH_DEBUG_EXT
oldTimeStamp = 1;
#endif
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 )
{
#ifdef OPT_GRAPH_DEBUG_EXT
oldTimeStamp = 1;
#endif
fate = T_FATE_NEWER;
}
else
{
fate = T_FATE_STABLE;
}
#ifdef OPT_GRAPH_DEBUG_EXT
if( DEBUG_FATE && fate != savedFate )
if( savedFate == T_FATE_STABLE )
printf( "fate change %s set to %s%s\n",
t->name, target_fate[fate],
oldTimeStamp ? " (by timestamp)" : "" );
else
printf( "fate change %s from %s to %s%s\n",
t->name, target_fate[savedFate], target_fate[fate],
oldTimeStamp ? " (by timestamp)" : "" );
#endif
/* 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 )
{
#ifdef OPT_GRAPH_DEBUG_EXT
if( DEBUG_FATE )
printf( "fate change %s to STABLE from %s, "
"no actions, no dependents and don't care\n",
t->name, target_fate[fate]);
#endif
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 ;
/* This target's fate may have been updated by virtue of following
* some target's rebuilds list, so only allow it to be increased
* to the fate we've calculated. Otherwise, grab its new fate.
*/
if (fate > t->fate)
t->fate = fate;
else
fate = t->fate;
/* Step 4g: if this target needs to be built, force rebuild
* everything in this target's rebuilds list */
if (fate >= T_FATE_BUILD && fate < T_FATE_BROKEN)
force_rebuilds(t);
/*
* 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;
if (counts) {
#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 );
/* We don't have DEBUG_CAUSES.
if( DEBUG_CAUSES &&
t->fate >= T_FATE_NEWER &&
t->fate <= T_FATE_MISSING )
printf( "%s %s\n", target_fate[ t->fate ], t->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 ) );
/* First bind all targets with LOCATE_TARGET setting. This is
needed to correctly handle dependencies to generated headers.
*/
bind_explicitly_located_targets();
{ PROFILE_ENTER(MAKE_MAKE0);
for( i = 0; i < n_targets; i++ )
{
TARGET *t = bindtarget( targets[i] );
make0( t, 0, 0, counts, anyhow );
}
PROFILE_EXIT(MAKE_MAKE0); }
#ifdef OPT_GRAPH_DEBUG_EXT
if( DEBUG_GRAPH )
{
for( i = 0; i < n_targets; i++ )
{
TARGET *t = bindtarget( targets[i] );
dependGraphOutput( t, 0 );
}
}
#endif
if( DEBUG_MAKE )
{
if( counts->targets )
printf( "...found %d target%s...\n", counts->targets,
counts->targets > 1 ? "s" : "" );
if( counts->temp )
printf( "...using %d temp target%s...\n", counts->temp,
counts->temp > 1 ? "s" : "" );
if( counts->updating )
printf( "...updating %d target%s...\n", counts->updating,
counts->updating > 1 ? "s" : "" );
if( counts->cantfind )
printf( "...can't find %d target%s...\n", counts->cantfind,
counts->cantfind > 1 ? "s" : "" );
if( counts->cantmake )
printf( "...can't make %d target%s...\n", counts->cantmake,
counts->cantmake > 1 ? "s" : "" );
}
#ifdef OPT_HEADER_CACHE_EXT
hcache_done();
#endif
status = counts->cantfind || counts->cantmake;
{ PROFILE_ENTER(MAKE_MAKE1);
for( i = 0; i < n_targets; i++ )
status |= make1( bindtarget( targets[i] ) );
PROFILE_EXIT(MAKE_MAKE1); }
return status;
}
static void
make1c( state *pState )
{
CMD *cmd = (CMD *)pState->t->cmds;
/* If there are (more) commands to run to build this target */
/* (and we haven't hit an error running earlier comands) we */
/* launch the command with execcmd(). */
/* If there are no more commands to run, we collect the status */
/* from all the actions then report our completion to all the */
/* parents. */
if( cmd && pState->t->status == EXEC_CMD_OK )
{
if( DEBUG_MAKEQ ||
! ( cmd->rule->actions->flags & RULE_QUIETLY ) && DEBUG_MAKE)
{
printf( "%s ", cmd->rule->name );
list_print( lol_get( &cmd->args, 0 ) );
printf( "\n" );
}
if( DEBUG_EXEC )
printf( "%s\n", cmd->buf );
if( globs.cmdout )
fprintf( globs.cmdout, "%s", cmd->buf );
if( globs.noexec )
{
pState->curstate = T_STATE_MAKE1D;
pState->status = EXEC_CMD_OK;
}
else
{
TARGET *t = pState->t;
fflush( stdout );
pop_state(&state_stack); /* pop state first because execcmd could push state */
execcmd( cmd->buf, make_closure, t, cmd->shell );
}
}
else
{
TARGETS *c;
ACTIONS *actions;
/* Collect status from actions, and distribute it as well */
for( actions = pState->t->actions; actions; actions = actions->next )
if( actions->action->status > pState->t->status )
pState->t->status = actions->action->status;
for( actions = pState->t->actions; actions; actions = actions->next )
if( pState->t->status > actions->action->status )
actions->action->status = pState->t->status;
/* Tally success/failure for those we tried to update. */
if( pState->t->progress == T_MAKE_RUNNING )
switch( pState->t->status )
{
case EXEC_CMD_OK:
++counts->made;
break;
case EXEC_CMD_FAIL:
++counts->failed;
break;
}
/* Tell parents dependent has been built */
{
stack temp_stack = { NULL };
TARGET *t = pState->t;
TARGET* additional_includes = NULL;
t->progress = T_MAKE_DONE;
/* Target was updated. Rescan dependencies. */
if (t->fate >= T_FATE_MISSING &&
t->status == EXEC_CMD_OK &&
!t->rescanned) {
TARGET *target_to_rescan = t;
SETTINGS *s;
target_to_rescan->rescanned = 1;
if (target_to_rescan->flags & T_FLAG_INTERNAL) {
target_to_rescan = t->original_target;
}
/* Clean current includes */
if (target_to_rescan->includes) {
target_to_rescan->includes = 0;
}
s = copysettings( target_to_rescan->settings );
pushsettings( s );
headers(target_to_rescan);
popsettings( s );
freesettings( s );
if (target_to_rescan->includes) {
target_to_rescan->includes->rescanned = 1;
/* Tricky. The parents were already processed, but they
did not seen the internal node, because it was just
created. We need to make the calls to make1a that would
have been done by parents here, and also make sure all
unprocessed parents will pick up the includes. We must
make sure processing of the additional make1a invocations
is done before make1b which means this target is built,
otherwise the parent will be considered built before this
make1a processing is even started.
*/
make0(target_to_rescan->includes, target_to_rescan->parents->target, 0, 0, 0);
for( c = target_to_rescan->parents; c; c = c->next) {
c->target->depends = targetentry( c->target->depends,
target_to_rescan->includes );
}
/* Will be processed below. */
additional_includes = target_to_rescan->includes;
}
}
if (additional_includes)
for ( c = t->parents; c; c = c->next ) {
push_state(&temp_stack, additional_includes, c->target, T_STATE_MAKE1A);
}
for( c = t->parents; c; c = c->next ) {
push_state(&temp_stack, c->target, NULL, T_STATE_MAKE1B);
}
#ifdef OPT_SEMAPHORE
/* If there is a semaphore, its now free */
if( t->semaphore )
{
assert( t->semaphore->asynccnt == 1 );
--(t->semaphore->asynccnt);
if( DEBUG_EXECCMD )
printf( "SEM: %s is now free\n", t->semaphore->name);
/* If anything is waiting, notify the next target. There's no
point in notifying all waiting targets, since they'll be
serialized again. */
if( t->semaphore->parents )
{
TARGETS *first = t->semaphore->parents;
if( first->next )
first->next->tail = first->tail;
t->semaphore->parents = first->next;
if( DEBUG_EXECCMD )
printf( "SEM: placing %s on stack\n", first->target->name);
push_state(&temp_stack, first->target, NULL, T_STATE_MAKE1B);
free( first );
}
}
#endif
/* must pop state before pushing any more */
pop_state(&state_stack);
/* using stacks reverses the order of execution. Reverse it back */
push_stack_on_stack(&state_stack, &temp_stack);
}
}
}
static void make1c( state const * const pState )
{
TARGET * const t = pState->t;
CMD * const cmd = (CMD *)t->cmds;
if ( cmd && t->status == EXEC_CMD_OK )
{
/* Pop state first in case something below (e.g. exec_cmd(), exec_wait()
* or make1c_closure()) pushes a new state. Note that we must not access
* the popped state data after this as the same stack node might have
* been reused internally for some newly pushed state.
*/
pop_state( &state_stack );
/* Increment the jobs running counter. */
++cmdsrunning;
/* Execute the actual build command or fake it if no-op. */
if ( globs.noexec || cmd->noop )
{
timing_info time_info = { 0 };
timestamp_current( &time_info.start );
timestamp_copy( &time_info.end, &time_info.start );
make1c_closure( t, EXEC_CMD_OK, &time_info, "", "", EXIT_OK );
}
else
{
exec_cmd( cmd->buf, make1c_closure, t, cmd->shell );
/* Wait until under the concurrent command count limit. */
/* FIXME: This wait could be skipped here and moved to just before
* trying to execute a command that would cross the command count
* limit. Note though that this might affect the order in which
* unrelated targets get built and would thus require that all
* affected Boost Build tests be updated.
*/
assert( 0 < globs.jobs );
assert( globs.jobs <= MAXJOBS );
while ( cmdsrunning >= globs.jobs )
exec_wait();
}
}
else
{
ACTIONS * actions;
/* Collect status from actions, and distribute it as well. */
for ( actions = t->actions; actions; actions = actions->next )
if ( actions->action->status > t->status )
t->status = actions->action->status;
for ( actions = t->actions; actions; actions = actions->next )
if ( t->status > actions->action->status )
actions->action->status = t->status;
/* Tally success/failure for those we tried to update. */
if ( t->progress == T_MAKE_RUNNING )
switch ( t->status )
{
case EXEC_CMD_OK: ++counts->made; break;
case EXEC_CMD_FAIL: ++counts->failed; break;
}
/* Tell parents their dependency has been built. */
{
TARGETS * c;
stack temp_stack = { NULL };
TARGET * additional_includes = NULL;
t->progress = globs.noexec ? T_MAKE_NOEXEC_DONE : T_MAKE_DONE;
/* Target has been updated so rescan it for dependencies. */
if ( t->fate >= T_FATE_MISSING && t->status == EXEC_CMD_OK &&
!( t->flags & T_FLAG_INTERNAL ) )
{
TARGET * saved_includes;
SETTINGS * s;
t->rescanned = 1;
/* Clean current includes. */
saved_includes = t->includes;
t->includes = 0;
s = copysettings( t->settings );
pushsettings( root_module(), s );
headers( t );
popsettings( root_module(), s );
freesettings( s );
if ( t->includes )
{
/* Tricky. The parents have already been processed, but they
* have not seen the internal node, because it was just
* created. We need to:
* - push MAKE1A states that would have been pushed by the
* parents here
* - make sure all unprocessed parents will pick up the
* new includes
* - make sure processing the additional MAKE1A states is
* done before processing the MAKE1B state for our
* current target (which would mean this target has
* already been built), otherwise the parent would be
* considered built before the additional MAKE1A state
* processing even got a chance to start.
*/
make0( t->includes, t->parents->target, 0, 0, 0, t->includes
);
/* Link the old includes on to make sure that it gets
* cleaned up correctly.
*/
t->includes->includes = saved_includes;
for ( c = t->dependants; c; c = c->next )
c->target->depends = targetentry( c->target->depends,
t->includes );
/* Will be processed below. */
additional_includes = t->includes;
}
else
{
t->includes = saved_includes;
}
}
if ( additional_includes )
for ( c = t->parents; c; c = c->next )
push_state( &temp_stack, additional_includes, c->target,
T_STATE_MAKE1A );
if ( t->scc_root )
{
TARGET * const scc_root = target_scc( t );
assert( scc_root->progress < T_MAKE_DONE );
for ( c = t->parents; c; c = c->next )
{
if ( target_scc( c->target ) == scc_root )
push_state( &temp_stack, c->target, NULL, T_STATE_MAKE1B
);
else
scc_root->parents = targetentry( scc_root->parents,
c->target );
}
}
else
{
for ( c = t->parents; c; c = c->next )
push_state( &temp_stack, c->target, NULL, T_STATE_MAKE1B );
}
#ifdef OPT_SEMAPHORE
/* If there is a semaphore, it is now free. */
if ( t->semaphore )
{
assert( t->semaphore->asynccnt == 1 );
--t->semaphore->asynccnt;
if ( DEBUG_EXECCMD )
printf( "SEM: %s is now free\n", object_str(
t->semaphore->name ) );
/* If anything is waiting, notify the next target. There is no
* point in notifying all waiting targets, since they will be
* notified again.
*/
if ( t->semaphore->parents )
{
TARGETS * first = t->semaphore->parents;
t->semaphore->parents = first->next;
if ( first->next )
first->next->tail = first->tail;
if ( DEBUG_EXECCMD )
printf( "SEM: placing %s on stack\n", object_str(
first->target->name ) );
push_state( &temp_stack, first->target, NULL, T_STATE_MAKE1B
);
BJAM_FREE( first );
}
}
#endif
/* Must pop state before pushing any more. */
pop_state( &state_stack );
/* Using stacks reverses the order of execution. Reverse it back. */
push_stack_on_stack( &state_stack, &temp_stack );
}
}
}
int make( LIST * targets, int anyhow )
{
COUNTS counts[ 1 ];
int status = 0; /* 1 if anything fails */
#ifdef OPT_HEADER_CACHE_EXT
hcache_init();
#endif
memset( (char *)counts, 0, sizeof( *counts ) );
/* Make sure that the tables are set up correctly.
*/
exec_init();
/* First bind all targets with LOCATE_TARGET setting. This is needed to
* correctly handle dependencies to generated headers.
*/
bind_explicitly_located_targets();
{
LISTITER iter, end;
PROFILE_ENTER( MAKE_MAKE0 );
for ( iter = list_begin( targets ), end = list_end( targets ); iter != end; iter = list_next( iter ) )
{
TARGET * t = bindtarget( list_item( iter ) );
if ( t->fate == T_FATE_INIT )
make0( t, 0, 0, counts, anyhow, 0 );
}
PROFILE_EXIT( MAKE_MAKE0 );
}
#ifdef OPT_GRAPH_DEBUG_EXT
if ( DEBUG_GRAPH )
{
LISTITER iter, end;
for ( iter = list_begin( targets ), end = list_end( targets ); iter != end; iter = list_next( iter ) )
dependGraphOutput( bindtarget( list_item( iter ) ), 0 );
}
#endif
if ( DEBUG_MAKE )
{
if ( counts->targets )
out_printf( "...found %d target%s...\n", counts->targets,
counts->targets > 1 ? "s" : "" );
if ( counts->temp )
out_printf( "...using %d temp target%s...\n", counts->temp,
counts->temp > 1 ? "s" : "" );
if ( counts->updating )
out_printf( "...updating %d target%s...\n", counts->updating,
counts->updating > 1 ? "s" : "" );
if ( counts->cantfind )
out_printf( "...can't find %d target%s...\n", counts->cantfind,
counts->cantfind > 1 ? "s" : "" );
if ( counts->cantmake )
out_printf( "...can't make %d target%s...\n", counts->cantmake,
counts->cantmake > 1 ? "s" : "" );
}
status = counts->cantfind || counts->cantmake;
{
PROFILE_ENTER( MAKE_MAKE1 );
status |= make1( targets );
PROFILE_EXIT( MAKE_MAKE1 );
}
return status;
}
void make0
(
TARGET * t,
TARGET * p, /* parent */
int depth, /* for display purposes */
COUNTS * counts, /* for reporting */
int anyhow,
TARGET * rescanning
) /* forcibly touch all (real) targets */
{
TARGETS * c;
TARGET * ptime = t;
TARGET * located_target = 0;
timestamp last;
timestamp leaf;
timestamp hlast;
int fate;
char const * flag = "";
SETTINGS * s;
#ifdef OPT_GRAPH_DEBUG_EXT
int savedFate;
int oldTimeStamp;
#endif
if ( DEBUG_MAKEPROG )
out_printf( "make\t--\t%s%s\n", spaces( depth ), object_str( t->name ) );
/*
* Step 1: Initialize.
*/
if ( DEBUG_MAKEPROG )
out_printf( "make\t--\t%s%s\n", spaces( depth ), object_str( t->name ) );
t->fate = T_FATE_MAKING;
t->depth = depth;
/*
* 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( root_module(), s );
/* Step 2b: Find and timestamp the target file (if it is a file). */
if ( ( t->binding == T_BIND_UNBOUND ) && !( t->flags & T_FLAG_NOTFILE ) )
{
OBJECT * another_target;
object_free( t->boundname );
t->boundname = search( t->name, &t->time, &another_target,
t->flags & T_FLAG_ISFILE );
/* If it was detected that this target refers to an already existing and
* bound target, we add a dependency so that every target depending on
* us will depend on that other target as well.
*/
if ( another_target )
located_target = bindtarget( another_target );
t->binding = timestamp_empty( &t->time )
? T_BIND_MISSING
: T_BIND_EXISTS;
}
/* INTERNAL, NOTFILE header nodes have the time of their parents. */
if ( p && ( t->flags & T_FLAG_INTERNAL ) )
ptime = p;
/* If temp file does not 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;
}
#ifdef OPT_SEMAPHORE
{
LIST * var = var_get( root_module(), constant_JAM_SEMAPHORE );
if ( !list_empty( var ) )
{
TARGET * const semaphore = bindtarget( list_front( var ) );
semaphore->progress = T_MAKE_SEMAPHORE;
t->semaphore = semaphore;
}
}
#endif
/* Step 2c: If its a file, search for headers. */
if ( t->binding == T_BIND_EXISTS )
headers( t );
/* Step 2d: reset "on target" variables. */
popsettings( root_module(), s );
freesettings( s );
/*
* Pause for a little progress reporting.
*/
if ( DEBUG_BIND )
{
if ( !object_equal( t->name, t->boundname ) )
out_printf( "bind\t--\t%s%s: %s\n", spaces( depth ),
object_str( t->name ), object_str( t->boundname ) );
switch ( t->binding )
{
case T_BIND_UNBOUND:
case T_BIND_MISSING:
case T_BIND_PARENTS:
out_printf( "time\t--\t%s%s: %s\n", spaces( depth ),
object_str( t->name ), target_bind[ (int)t->binding ] );
break;
case T_BIND_EXISTS:
out_printf( "time\t--\t%s%s: %s\n", spaces( depth ),
object_str( t->name ), timestamp_str( &t->time ) );
break;
}
}
/*
* Step 3: Recursively make0() dependencies & headers.
*/
/* Step 3a: Recursively make0() dependencies. */
for ( c = t->depends; c; c = c->next )
{
int const internal = t->flags & T_FLAG_INTERNAL;
/* 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, rescanning );
else if ( c->target->fate == T_FATE_MAKING && !internal )
out_printf( "warning: %s depends on itself\n", object_str(
c->target->name ) );
else if ( c->target->fate != T_FATE_MAKING && rescanning )
make0rescan( c->target, rescanning );
if ( rescanning && c->target->includes && c->target->includes->fate !=
T_FATE_MAKING )
make0rescan( target_scc( c->target->includes ), rescanning );
}
if ( located_target )
{
if ( located_target->fate == T_FATE_INIT )
make0( located_target, ptime, depth + 1, counts, anyhow, rescanning
);
else if ( located_target->fate != T_FATE_MAKING && rescanning )
make0rescan( located_target, rescanning );
}
/* Step 3b: Recursively make0() internal includes node. */
if ( t->includes )
make0( t->includes, p, depth + 1, counts, anyhow, rescanning );
/* Step 3c: Add dependencies' includes to our direct dependencies. */
{
TARGETS * 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 );
}
if ( located_target )
t->depends = targetentry( t->depends, located_target );
/* Step 3d: Detect cycles. */
{
int cycle_depth = depth;
for ( c = t->depends; c; c = c->next )
{
TARGET * scc_root = target_scc( c->target );
if ( scc_root->fate == T_FATE_MAKING &&
( !scc_root->includes ||
scc_root->includes->fate != T_FATE_MAKING ) )
{
if ( scc_root->depth < cycle_depth )
{
cycle_depth = scc_root->depth;
t->scc_root = scc_root;
}
}
}
}
/*
* Step 4: Compute time & fate.
*/
/* Step 4a: Pick up dependencies' time and fate. */
timestamp_clear( &last );
timestamp_clear( &leaf );
fate = T_FATE_STABLE;
for ( c = t->depends; c; c = c->next )
{
/* If we are in a different strongly connected component, pull
* timestamps from the root.
*/
if ( c->target->scc_root )
{
TARGET * const scc_root = target_scc( c->target );
if ( scc_root != t->scc_root )
{
timestamp_max( &c->target->leaf, &c->target->leaf,
&scc_root->leaf );
timestamp_max( &c->target->time, &c->target->time,
&scc_root->time );
c->target->fate = max( c->target->fate, scc_root->fate );
}
}
/* If LEAVES has been applied, we only heed the timestamps of the leaf
* source nodes.
*/
timestamp_max( &leaf, &leaf, &c->target->leaf );
if ( t->flags & T_FLAG_LEAVES )
{
timestamp_copy( &last, &leaf );
continue;
}
timestamp_max( &last, &last, &c->target->time );
fate = max( fate, c->target->fate );
#ifdef OPT_GRAPH_DEBUG_EXT
if ( DEBUG_FATE )
if ( fate < c->target->fate )
out_printf( "fate change %s from %s to %s by dependency %s\n",
object_str( t->name ), target_fate[ (int)fate ],
target_fate[ (int)c->target->fate ], object_str(
c->target->name ) );
#endif
}
/* 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.
*/
if ( t->includes )
timestamp_copy( &hlast, &t->includes->time );
else
timestamp_clear( &hlast );
/* Step 4c: handle NOUPDATE oddity.
*
* If a NOUPDATE file exists, mark it as having eternally old dependencies.
* Do not inherit our fate from our dependencies. Decide fate based only on
* other flags and our binding (done later).
*/
if ( t->flags & T_FLAG_NOUPDATE )
{
#ifdef OPT_GRAPH_DEBUG_EXT
if ( DEBUG_FATE )
if ( fate != T_FATE_STABLE )
out_printf( "fate change %s back to stable, NOUPDATE.\n",
object_str( t->name ) );
#endif
timestamp_clear( &last );
timestamp_clear( &t->time );
/* Do not inherit our fate from our dependencies. Decide fate based only
* upon other flags and our binding (done later).
*/
fate = T_FATE_STABLE;
}
/* Step 4d: Determine fate: rebuild target or what? */
/*
In English:
If can not find or make child, can not 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 gets more stable.
*/
#ifdef OPT_GRAPH_DEBUG_EXT
savedFate = fate;
oldTimeStamp = 0;
#endif
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 && timestamp_cmp( &last, &t->time ) >
0 )
{
#ifdef OPT_GRAPH_DEBUG_EXT
oldTimeStamp = 1;
#endif
fate = T_FATE_OUTDATED;
}
else if ( t->binding == T_BIND_PARENTS && timestamp_cmp( &last, &p->time ) >
0 )
{
#ifdef OPT_GRAPH_DEBUG_EXT
oldTimeStamp = 1;
#endif
fate = T_FATE_NEEDTMP;
}
else if ( t->binding == T_BIND_PARENTS && timestamp_cmp( &hlast, &p->time )
> 0 )
{
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
&& timestamp_cmp( &t->time, &p->time ) > 0 )
{
#ifdef OPT_GRAPH_DEBUG_EXT
oldTimeStamp = 1;
#endif
fate = T_FATE_NEWER;
}
else
{
fate = T_FATE_STABLE;
}
#ifdef OPT_GRAPH_DEBUG_EXT
if ( DEBUG_FATE && ( fate != savedFate ) )
{
if ( savedFate == T_FATE_STABLE )
out_printf( "fate change %s set to %s%s\n", object_str( t->name ),
target_fate[ fate ], oldTimeStamp ? " (by timestamp)" : "" );
else
out_printf( "fate change %s from %s to %s%s\n", object_str( t->name ),
target_fate[ savedFate ], target_fate[ fate ], oldTimeStamp ?
" (by timestamp)" : "" );
}
#endif
/* Step 4e: Handle missing files. */
/* If it is missing and there are no actions to create it, boom. */
/* If we can not make a target we do not care about it, okay. */
/* We could insist that there are updating actions for all missing */
/* files, but if they have dependencies we just pretend it is a NOTFILE. */
if ( ( fate == T_FATE_MISSING ) && !t->actions && !t->depends )
{
if ( t->flags & T_FLAG_NOCARE )
{
#ifdef OPT_GRAPH_DEBUG_EXT
if ( DEBUG_FATE )
out_printf( "fate change %s to STABLE from %s, "
"no actions, no dependencies and do not care\n",
object_str( t->name ), target_fate[ fate ] );
#endif
fate = T_FATE_STABLE;
}
else
{
out_printf( "don't know how to make %s\n", object_str( t->name ) );
fate = T_FATE_CANTFIND;
}
}
/* Step 4f: Propagate dependencies' time & fate. */
/* Set leaf time to be our time only if this is a leaf. */
timestamp_max( &t->time, &t->time, &last );
timestamp_copy( &t->leaf, timestamp_empty( &leaf ) ? &t->time : &leaf );
/* This target's fate may have been updated by virtue of following some
* target's rebuilds list, so only allow it to be increased to the fate we
* have calculated. Otherwise, grab its new fate.
*/
if ( fate > t->fate )
t->fate = fate;
else
fate = t->fate;
/*
* Step 4g: If this target needs to be built, make0 all targets
* that are updated by the same actions used to update this target.
* These have already been marked as REBUILDS, and make1 has
* special handling for them. We just need to make sure that
* they get make0ed.
*/
if ( ( fate >= T_FATE_BUILD ) && ( fate < T_FATE_BROKEN ) )
{
ACTIONS * a;
TARGETS * c;
for ( a = t->actions; a; a = a->next )
{
for ( c = a->action->targets; c; c = c->next )
{
if ( c->target->fate == T_FATE_INIT )
{
make0( c->target, ptime, depth + 1, counts, anyhow, rescanning );
}
}
}
}
/* Step 4h: If this target needs to be built, force rebuild everything in
* its rebuilds list.
*/
if ( ( fate >= T_FATE_BUILD ) && ( fate < T_FATE_BROKEN ) )
force_rebuilds( t );
/*
* Step 5: Sort dependencies by their update time.
*/
if ( globs.newestfirst )
t->depends = make0sort( t->depends );
/*
* Step 6: A little harmless tabulating for tracing purposes.
*/
/* Do not count or report interal includes nodes. */
if ( t->flags & T_FLAG_INTERNAL )
return;
if ( counts )
{
#ifdef OPT_IMPROVED_PATIENCE_EXT
++counts->targets;
#else
if ( !( ++counts->targets % 1000 ) && DEBUG_MAKE )
{
out_printf( "...patience...\n" );
out_flush();
}
#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 && timestamp_cmp( &t->time,
&p->time ) > 0 )
flag = "*";
if ( DEBUG_MAKEPROG )
out_printf( "made%s\t%s\t%s%s\n", flag, target_fate[ (int)t->fate ],
spaces( depth ), object_str( t->name ) );
}