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root/cvsroot/COMP/SCRAM/src/BuildSystem/BuildSetup.pm

Comparing COMP/SCRAM/src/BuildSystem/BuildSetup.pm (file contents):
Revision 1.6 by williamc, Tue Sep 19 10:09:30 2000 UTC vs.
Revision 1.23 by sashby, Mon May 13 12:43:53 2002 UTC

#	Line 2 | Line 2
2		#
3		# Interface
4		# ---------
5	<	# new(ConfigArea) : A new BuildSetup
5	>	# new(toolbox) : A new BuildSetup
6		# BuildSetup(directory,targets) : prepare the ground for a build and build
7		# getclass(directory) : return (Class, ClassDir, BuildFileobject)
8		#                       associated with directory
9	<	# setup(dir)
9	>	#
10
11		package BuildSystem::BuildSetup;
12		require 5.004;
#	Line 20 | Line 20 | sub new {
20		my $class=shift;
21		my $self={};
22		bless $self,$class;
23	<	$self->{area}=shift;
24	<	$self->{toolbox}=$self->{area}->toolbox();
25	<	$self->{projconfigdir}=$self->{area}->configurationdir();
26	<	$self->{localtop}=$self->{area}->location();
27	<	$self->{buildfilename}="BuildFile";
28	<	$self->_configurationsetup();
23	>	$self->{toolbox}=shift;
24		return $self;
25		}
26
27	<	sub _generateexternals {
28	<	my $self=shift;
29	<	my $outfile=shift;
30	<
31	<	# -- specifiy these files for dependency information
32	<	my $depfile=$self->{projconfigdir}."/External_Dependencies";
33	<
34	<	# -- get list of dependent files
35	<	my $datadir=$self->{localtop}."/.SCRAM/".$ENV{SCRAM_ARCH};
36	<	$fdir=FileHandle->new();
37	<	opendir $fdir, $datadir;
38	<	my @depfiles=grep !/^\.\.?$/, readdir $fdir;
39	<	undef $fdir;
40	<	for (my $i=0; $i<=$#depfiles; $i++ ) {
41	<	$depfiles[$i]=$datadir."/".$depfiles[$i];
42	<	}
43	<
44	<	# -- do we need to rebuild?
45	<	if ( SCRAMUtils::dated($outfile,@depfiles) ) {
46	<	print "Configuring Local Area\n";
47	<	# -- open output file
48	<	my $fout=FileHandle->new();
49	<	$fout->open(">".$outfile) or die "Unable to open $outfile for output".
50	<	$!."\n";
51	<
52	<	# -- print out tool/ version info
53	<	my ($tool,$toolobj,$f,$val,$version);
54	<	foreach $tool ( $self->{toolbox}->tools() ) {
55	<	$version=$self->{toolbox}->defaultversion($tool);
56	<	# default versions
57	<	print $fout "ifdef $tool\n".$tool."_V_".$version."=true\nendif\n";
58	<	# -- set up the different version  -- externals
59	<	foreach $version ( $self->{toolbox}->versions($tool) ) {
60	<	$toolobj=$self->{toolbox}->gettool($tool,$version);
61	<	@deps=$toolobj->getfeature("_externals");
62	<	foreach $d ( @deps ) {
63	<	$d=~tr[A-Z][a-z];
64	<	print $fout "ifdef ".$tool."_V_".$version."\n $d=true\nendif\n";
65	<	}
66	<	# -- tool info
67	<	print $fout "ifdef ".$tool."_V_".$version."\n";
68	<	foreach $f ( $toolobj->features() ) {
69	<	foreach $val ( $toolobj->getfeature($f) ) {
70	<	print $fout "\t".$f." += ".$val."\n";
71	<	}
72	<	}
73	<	print $fout "endif\n";
27	>	sub _generateexternals
28	>	###############################################################
29	>	# _generateexternals                                          #
30	>	###############################################################
31	>	# modified : Thu Jul 12 12:06:50 2001 / SFA                   #
32	>	# params   :                                                  #
33	>	#          :                                                  #
34	>	#          :                                                  #
35	>	#          :                                                  #
36	>	# function :                                                  #
37	>	#          :                                                  #
38	>	#          :                                                  #
39	>	###############################################################
40	>	{
41	>	my $self=shift;
42	>	my $outfile=shift;
43	>
44	>	# -- specifiy these files for dependency information
45	>	# NB: This file is never used!
46	>
47	>	my $depfile=$ENV{projconfigdir}."/External_Dependencies";
48	>
49	>	# -- get list of dependent files
50	>	my $datadir=$ENV{LOCALTOP}."/.SCRAM/".$ENV{SCRAM_ARCH};
51	>	$fdir=FileHandle->new();
52	>	opendir $fdir, $datadir;
53	>	my @depfiles=grep !/^\.\.?$/, readdir $fdir;
54	>	undef $fdir;
55	>
56	>	for (my $i=0; $i<=$#depfiles; $i++ )
57	>	{
58	>	$depfiles[$i]=$datadir."/".$depfiles[$i];
59	>	}
60	>
61	>	# -- do we need to rebuild?
62	>	if ( SCRAMUtils::dated($outfile,@depfiles) )
63	>	{
64	>	print "Configuring Local Area\n";
65	>	# -- open output file
66	>	my $fout=FileHandle->new();
67	>	$fout->open(">".$outfile) or die "Unable to open $outfile for output".
68	>	$!."\n";
69	>
70	>	# -- print out tool/ version info
71	>	my ($tool,$toolobj,$f,$val,$version);
72	>
73	>	foreach $tool ( $self->{toolbox}->tools() )
74	>	{
75	>	$version=$self->{toolbox}->defaultversion($tool);
76	>
77	>	# default versions
78	>	print $fout "ifdef $tool\n".$tool."_V_".$version."=true\nendif\n";
79	>
80	>	# -- set up the different version  -- externals
81	>	foreach $version ( $self->{toolbox}->versions($tool) )
82	>	{
83	>	$toolobj=$self->{toolbox}->gettool($tool,$version);
84	>	@deps=$toolobj->getfeature("_externals");
85	>	#
86	>	foreach $d ( @deps )
87	>	{
88	>	$d=~tr[A-Z][a-z];
89	>	print $fout "ifdef ".$tool."_V_".$version."\n $d=true\nendif\n";
90	>	}
91	>	# -- tool info
92	>	print $fout "ifdef ".$tool."_V_".$version."\n";
93	>
94	>	foreach $f ( $toolobj->features() )
95	>	{
96	>	foreach $val ( $toolobj->getfeature($f) )
97	>	{
98	>	print $fout "\t".$f." += ".$val."\n";
99	>	}
100	>	}
101	>	# -- include any makefiles associated with the tool
102	>	if ( -f $self->{toolbox}->toolmakefile($tool,$version) )
103	>	{
104	>	print $fout "-include ".
105	>	$self->{toolbox}->toolmakefile($tool,$version)."\n";
106	>	}
107	>	print $fout "endif\n";
108		}
109	<	}
110	<	# some addittional processing of specific vars
111	<	print $fout 'INCLUDEPATH+=$(addprefix -I,$(INCLUDE))'."\n";
112	<	print $fout 'LDFLAGS+=$(addprefix -L,$(LIBDIR))'."\n";
113	<	print $fout 'CPPFLAGS+=$(addprefix -D,$(CPPDEFINES))'."\n";
114	<	print $fout 'lib+=$(extralib)'."\n";
115	<	print $fout 'LDLIBS+=$(addprefix -l,$(lib))'."\n";
116	<	print $fout 'LDLIBS+=$(addprefix -l,$(REQUIRES))'."\n";
117	<
118	<	undef $fout;
119	<	$self->verbose("End Configuration Setup");
120	<	}
92	<	}
93	<
94	<	sub classsetup {
95	<	my $self=shift;
96	<	my $THISDIR=shift;
97	<
98	<	my $classmakefile;
99	<
100	<	my ($Class, $ClassDir, $bf)=$self->getclass($THISDIR);
101	<	$self->verbose("Class = $Class : ClassDir = $ClassDir for directory ".
102	<	$THISDIR);
103	<
104	<	# -- should we ignore?
105	<	if ( $bf->ignore() ) {
106	<	print "Nothing to be done - empty group\n";
107	<	exit;
108	<	}
109	<
110	<
111	<	# -- Create a makefile from the class BuildFile
112	<	my $classbuildfile=$self->{localtop}."/".
113	<	$self->{projconfigdir}."/".$Class."_BuildFile";
114	<	if ( -f $classbuildfile ) {
115	<	$classmakefile=$self->{localtop}."/".$ENV{INTwork}.
116	<	"/".$Class."_makefile.mk";
117	<	if ( SCRAMUtils::dated($classmakefile, $classbuildfile) ) {
118	<	# -- generate the new makefile if out of date
119	<	$self->verbose("Generating $classmakefile from".
120	<	" $classbuildfile");
121	<	my $classbf=BuildSystem::BuildFile->new($self->{area});
122	<	undef $ENV{LatestBuildFile}; # gets set by BuildFile
123	<	$classbf->GenerateMakefile($classbuildfile, $classmakefile);
124	<	undef $ENV{LatestBuildFile}; # we dont want this included in the
125	<	# hierarchy
126	<	}
127	<	}
128	<	else {
129	<	# -- No BuildFile - maybe its old style makefile
130	<	$classmakefile=$self->{localtop}."/".
131	<	$self->{projconfigdir}."/".$Class."_makefile.mk";
132	<	if ( ! -f $classmakefile ) {
133	<	$self->error("Unable to find matching ".$Class.
134	<	"_BuildFile or ".$Class."_makefile.mk");
135	<	}
136	<	}
137	<	# -- set LatestBuildFile
138	<	if ( $bf->buildfile() ne "" ) {
139	<	$ENV{LatestBuildFile}=$bf->makefile();
140	<	}
141	<	else {
142	<	$ENV{LatestBuildFile}=$self->{topbf}->makefile();
143	<	}
144	<
145	<	return ($Class,$ClassDir,$classmakefile);
146	<	}
147	<
148	<	sub _configurationsetup {
149	<	my $self=shift;
150	<
151	<	# -- set working directory
152	<	$self->{workdir}=$ENV{INTwork};
153	<	$self->{fullworkdir}=$self->{localtop}."/".$self->{workdir};
154	<
155	<	# -- make working directory
156	<	chdir $self->{localtop};
157	<	AddDir::adddir($self->{workdir});
158	<
159	<	# -- generate tool info
160	<	$self->_generateexternals($self->{fullworkdir}."/clientmakefile");
109	>	}
110	>	# some addittional processing of specific vars
111	>	print $fout 'INCLUDEPATH+=$(addprefix -I,$(INCLUDE))'."\n";
112	>	print $fout 'LDFLAGS+=$(addprefix -L,$(LIBDIR))'."\n";
113	>	print $fout 'CPPFLAGS+=$(addprefix -D,$(CPPDEFINES))'."\n";
114	>	print $fout 'lib+=$(extralib)'."\n";
115	>	# Hack to parse the lib list and remove duplicates:
116	>	print $fout 'ORDEREDLIB=$(shell $(SCRAMPERL) $(TOOL_HOME)/ProcessLibs $(lib))',"\n";
117	>	print $fout 'LDLIBS+=$(addprefix -l,$(ORDEREDLIB))'."\n";
118	>	#print $fout 'LDLIBS+=$(addprefix -l,$(lib))'."\n";
119	>	print $fout 'LDLIBS+=$(addprefix -l,$(REQUIRES))'."\n";
120	>	print $fout 'LD_LIBRARY_PATH:=$(subst $(space),:,$(LD_LIBRARY_PATH))'."\n";
121
122	<	# -- process project BuildFile
123	<	$self->_topbuildfile();
124	<	}
122	>	undef $fout;
123	>	}
124	>	}
125
126	<	sub BuildDir {
127	<	my $self=shift;
128	<	my $THISDIR=shift;
129	<	my @Targets=@_;
130	<	my $DefaultBuildFile="";
131	<
132	<	# -- Create working directory
133	<	my $workdir=$self->{workdir}."/".$THISDIR;
134	<	chdir $self->{localtop};
135	<	AddDir::adddir($workdir);
136	<	$ENV{workdir}=$workdir;
137	<	my $fullworkdir=$self->{localtop}."/".$ENV{workdir};
138	<	chdir $fullworkdir || die "Unable to enter working directory $!";
139	<
140	<	# -- setup Class specifics
141	<	($Class,$ClassDir,$classmakefile)=$self->classsetup($THISDIR);
142	<	$ENV{classmakefile}=$classmakefile;
143	<	$ENV{Class}=$Class;
144	<	$ENV{ClassDir}=$ClassDir;
145	<	$DefaultBuildFile=$ENV{classmakefile};
146	<	$ENV{DefaultBuildFile}=$DefaultBuildFile;
126	>	sub BuildSetup
127	>	{
128	>	###############################################################
129	>	# BuildSetup                                                  #
130	>	###############################################################
131	>	# modified : Fri Aug 10 16:57:03 2001 / SFA                   #
132	>	# params   :                                                  #
133	>	#          :                                                  #
134	>	#          :                                                  #
135	>	#          :                                                  #
136	>	# function : Build targets.                                   #
137	>	#          :                                                  #
138	>	#          :                                                  #
139	>	###############################################################
140	>	my $self=shift;
141	>	my $THISDIR=shift;
142	>	my @Targets=@_;
143	>	my $DefaultBuildFile="";
144	>	my $Class="";
145	>
146	>	# -- Create working directory
147	>	chdir $ENV{LOCALTOP};
148	>	AddDir::adddir($ENV{INTwork}."/".$THISDIR);
149	>
150	>	my ($Class, $ClassDir, $bf)=$self->getclass($THISDIR);
151	>	$self->verbose("Class = $Class");
152	>	$self->verbose("ClassDir = $ClassDir");
153
154	+	if ( $bf->ignore() )
155	+	{
156	+	print "Nothing to be done - empty group\n";
157	+	exit;
158	+	}
159	+	shift;
160	+	$self->_generateexternals($ENV{LOCALTOP}."/".$ENV{INTwork}."/clientmakefile");
161	+
162	+	# set up the workdir variable
163	+	$ENV{workdir}=$ENV{INTwork}."/".$ClassDir;
164	+	my $fullworkdir=$ENV{LOCALTOP}."/".$ENV{workdir};
165	+
166	+	# set up projdeps variable
167	+	my $projectfile=$ENV{projconfigdir}."/External_Dependencies";
168	+	if ( -e $ENV{LOCALTOP}."/".$projectfile )
169	+	{
170	+	$ENV{projdeps}=$ENV{LOCALTOP}."/".$projectfile;
171	+	}
172	+	elsif ( -e $ENV{RELEASETOP}."/".$projectfile )
173	+	{
174	+	$ENV{projectfile}=$ENV{RELEASETOP}."/".$projectfile;
175	+	}
176	+	if ( $DefaultBuildFile eq "" )
177	+	{
178	+	# Map Relevant makefile classmakefile directory
179	+	my $classmakefile=$ENV{projconfigdir}."/".$Class."_makefile.mk";
180	+	if ( -e $ENV{LOCALTOP}."/".$classmakefile )
181	+	{
182	+	$ENV{classmakefile}=$ENV{LOCALTOP}."/".$classmakefile;
183	+	}
184	+	elsif ( -e $ENV{RELEASETOP}."/".$classmakefile )
185	+	{
186	+	$ENV{classmakefile}=$ENV{RELEASETOP}."/".$classmakefile;
187	+	}
188	+	else
189	+	{
190	+	print "\nUnable to locate $classmakefile\n";
191	+	print " Not in $ENV{LOCALTOP}\n";
192	+	print " Not in $ENV{RELEASETOP}\n";
193	+	exit 1;
194	+	}
195	+	$DefaultBuildFile=$ENV{classmakefile}; # TODO - only for override
196	+	}
197	+
198	+	$ENV{ClassDir}=$ClassDir;
199	+	$ENV{Class}=$Class;
200	+	$ENV{DefaultBuildFile}=$DefaultBuildFile;
201	+
202	+	chdir $fullworkdir || die "Unable to enter working directory $!";
203	+
204	+	# Set up some other useful variables fo the Build
205	+	# list of directories available
206	+	opendir IDR, "$ENV{LOCALTOP}/$THISDIR";
207	+	@allfiles= grep !/^\.\.?$/, readdir IDR;
208	+	foreach $file ( @allfiles )
209	+	{
210	+	if ( -d "$ENV{LOCALTOP}/$THISDIR/$file" )
211	+	{ # only add if its a directory
212	+	$ENV{SCRAM_AVAILDIRS}=$ENV{SCRAM_AVAILDIRS}." ".$file;
213	+	}
214	+	else
215	+	{
216	+	$ENV{SCRAM_AVAILFILES}=$ENV{SCRAM_AVAILFILES}." ".$file;
217	+	}
218	+	}
219	+	$targetnumber=$#Targets;
220
221	<	# -- Set up some other useful variables for the Build
222	<	# set variables listing directories/files available
223	<	my $fh=FileHandle->new();
224	<	opendir $fh, "$self->{localtop}/$THISDIR";
225	<	my @allfiles= grep !/^\.\.?$/, readdir $fh;
226	<	undef $fh;
227	<	foreach $file ( @allfiles ) {
228	<	if ( -d "$self->{localtop}/$THISDIR/$file" ) {
229	<	$ENV{SCRAM_AVAILDIRS}=$ENV{SCRAM_AVAILDIRS}." ".$file;
230	<	}
231	<	else {
232	<	$ENV{SCRAM_AVAILFILES}=$ENV{SCRAM_AVAILFILES}." ".$file;
233	<	}
234	<	}
235	<	my $targetnumber=$#Targets;
204	<	$ENV{"MAKETARGETS"}="";
205	<	foreach $word ( @Targets ) {
206	<	if ( $word=~/.*=.*/ ) { # if we have an assignment it cant be a target
207	<	$targetnumber--;
208	<	}
209	<	else {
210	<	# set some variables for use in makefiles
211	<	$ENV{"MAKETARGET_".$word}=$word;
212	<	if ( $ENV{"MAKETARGETS"} ne "" ) {
213	<	$ENV{"MAKETARGETS"}=$ENV{"MAKETARGETS"}." ".$word;
214	<	}
215	<	else {
216	<	$ENV{"MAKETARGETS"}=$word;
217	<	}
218	<	}
219	<	}
221	>	foreach $word ( @Targets )
222	>	{
223	>	if ( $word=~/.*=.*/ )
224	>	{ # if we have an assignment it cant be a target
225	>	$targetnumber--;
226	>	}
227	>	elsif ( $word=~/^-/ )
228	>	{
229	>	$targetnumber--;
230	>	}
231	>	else
232	>	{
233	>	$ENV{"MAKETARGET_".$word}=$word;
234	>	}
235	>	}
236
237	<	# -- If target not specified default to the class name target
238	<	if ( $targetnumber == -1 ) {
239	<	push @Targets,$Class;
240	<	}
237	>	# If not specified default to the class name target
238	>	if ( $targetnumber == -1 )
239	>	{
240	>	push @Targets,$Class;
241	>	}
242
243	<	$ENV{DefaultMakefile}="$ENV{TOOL_HOME}/basics.mk";
243	>	$ENV{DefaultMakefile}="$ENV{TOOL_HOME}/basics.mk";
244
245	<	$SCRAM_GROUPSDIR=$self->{localtop}."/".$self->{projconfigdir}."/groups.mk";
246	<	if ( -f $SCRAM_GROUPSDIR ) {
245	>	$SCRAM_GROUPSDIR=$ENV{LOCALTOP}."/".$ENV{projconfigdir}."/groups.mk";
246	>	if ( -f $SCRAM_GROUPSDIR )
247	>	{
248		$ENV{SCRAM_GROUPSDIR}=$SCRAM_GROUPSDIR;
249	<	}
249	>	}
250	>
251	>	# Do a datestamp check so that make will build files that have changed
252	>	# rather than just those which are older than their dependencies
253	>	# The main build here
254	>
255	>	$rv=system("gmake","--no-print-directory","-r","-k","-f","$ENV{DefaultMakefile}","-I$ENV{TOOL_HOME}",datestamp_config);
256	>
257	>	# Be verbose:
258	>	$self->verbose(">> Going to use ".$ENV{DefaultMakefile}." as the default makefile");
259	>
260	>	my $gmakejobsflag = "-j";
261	>	# Temporarily hard-code ncpu as 1:
262	>	my $ncpu = 1;
263
264	<	# Do a datestamp check so that make will build files that have changed
265	<	# rather than just those which are older than their dependencies
266	<	# The main build here
267	<	$rv=system("gmake","--no-print-directory","-r","-k","-f","$ENV{DefaultMakefile}","-I$ENV{TOOL_HOME}",datestamp_config);
237	<	$rv=system("gmake","--no-print-directory","-r","-k","-f","$ENV{DefaultMakefile}","-I$ENV{TOOL_HOME}",datestamp, @Targets);
238	<	return $rv/256; # return the exit status of gmake
239	<	}
264	>	$rv=system("gmake","--no-print-directory","$gmakejobsflag","$ncpu","-r","-k","-f","$ENV{DefaultMakefile}","-I$ENV{TOOL_HOME}",datestamp, @Targets);
265	>
266	>	return $rv/256; # return the exit status of gmake
267	>	}
268
269		sub getclass {
270		my $self=shift;
#	Line 244 | Line 272 | sub getclass {
272		my $Class="DEFAULT";
273		my $ClassDir="";
274
247	–	#return if $dirname eq "";
275		@DIRA=split /\//, $dirname;
276
277	<	my $thispath=".";
278	<	# -- construct all class buildfiles in the path
277	>	$thispath=".";
278	>	# bootstrap from project buildfile if it exists
279	>	my $bf=BuildSystem::BuildFile->new($self->{toolbox});
280	>	$bf->CheckBuildFile($ENV{projconfigdir});
281	>
282	>	my @ClassPaths=split /:/, $bf->BlockClassPath();
283	>	foreach $BClassPath ( @ClassPaths ) {
284	>	next if ( $BClassPath eq "");
285	>	push @LoBCA, [ split /\//, $BClassPath ];
286	>	}
287		for ( $i=0; $i<=$#DIRA; $i++ ) {
288	<	#$thispath=(($thispath eq "")?$DIRA[$i]:$thispath."/".$DIRA[$i]);
289	<	$thispath=$thispath."/".$DIRA[$i];
290	<	if ( ! exists $self->{pathbf}{$thispath} ) {
256	<	$self->verbose("Initialising BuildFile in $thispath");
257	<	$self->{pathbf}{$thispath}=$self->_startbuildfile($thispath);
258	<	}
259	<	# -- check class overriden by BuildFile
260	<	if ( defined $self->{pathbf}{$thispath}->classname() ) {
261	<	$Class=$self->{pathbf}{$thispath}->classname();
288	>	$thispath=$thispath."/".$DIRA[$i];
289	>	if ( ($ClassName=$bf->CheckBuildFile($thispath)) ne "" ) {
290	>	$Class=$ClassName;
291		$ClassDir=$thispath;
292		}
293	+	# TODO --- Must test against position of last new BlockCaseA
294	+	# Need to reset array LoBCA to the New BlockPath
295	+	# - merge and replace options
296	+	#
297		else {
298	<	# -- sort it out from classpath directives
299	<	foreach $BlockClassA ( @{$self->{LoBCA}} ) {
300	<	foreach $elem ( @$BlockClassA ) {
268	<	if ( $elem=~/^$DIRA[$i]\+/ ) {
269	<	$elem=~s/^$DIRA[$i]//;
298	>	foreach $BlockClassA ( @LoBCA ) {
299	>	if ( $$BlockClassA[0]=~/^$DIRA[$i]\+/ ) {
300	>	$$BlockClassA[0]=~s/^$DIRA[$i]//;
301		}
302	<	if ( $elem=~/^\+/ ) {
303	<	($Class=$elem)=~s/^\+//;
302	>	if ( $$BlockClassA[0]=~/^\+/ ) {
303	>	($Class=$$BlockClassA[0])=~s/^\+//;
304		$ClassDir=$thispath;
305	+	shift @$BlockClassA;
306	+	}
307	+	else {
308	+	@$BlockClassA=();
309		}
310		}
276	–	}
311		}
312		}
313	<	# -- default case
314	<	if ( $ClassDir eq "" ) {
281	<	if ( ! defined $self->{pathbf}{'.'}) {
282	<	$self->{pathbf}{'.'}=$self->_startbuildfile(".");
283	<	$self->verbose("DEFAULT class initialised : ".$self->{pathbf}{'.'});
284	<	}
285	<	$ClassDir=".";
286	<	}
287	<
288	<	# -- retunrs
289	<	($ClassDir_c=$ClassDir)=~s/^\.\///;
290	<	return ( $Class, $ClassDir_c, $self->{pathbf}{$ClassDir});
291	<	}
292	<
293	<	#
294	<	# Check to see if the buildfile is local or in the release area and
295	<	# parse appropriately
296	<	#
297	<	sub _startbuildfile {
298	<	my $self=shift;
299	<	my $classdir=shift;
300	<
301	<	my $bf=BuildSystem::BuildFile->new($self->{area});
302	<	my $thisfile="$classdir/$self->{buildfilename}";
303	<
304	<	if ( -e $self->{localtop}."/".$thisfile ) {
305	<	$bf->buildfile($self->{localtop}."/".$thisfile);
306	<	$bf->ParseBuildFile($self->{localtop}, $classdir,
307	<	$self->{buildfilename});
308	<	}
309	<	elsif ( -e $ENV{RELEASETOP}."/".$thisfile ) {
310	<	$bf->buildfile("$ENV{RELEASETOP}/$thisfile");
311	<	$bf->ParseBuildFile($ENV{RELEASETOP}, $classdir,
312	<	$slef->{buildfilename});
313	<	}
314	<	return $bf;
315	<	}
316	<
317	<	sub _topbuildfile {
318	<	my $self=shift;
319	<
320	<	# -- Analyse project buildfile if it exists
321	<	$self->{topbf}=BuildSystem::BuildFile->new($self->{area});
322	<
323	<	$self->{topbf}->buildfile($self->{localtop}."/".$self->{projconfigdir}
324	<	."/".$self->{buildfilename});
325	<	# -- generate top level makefile
326	<	$self->verbose("Generating Top Level BuildFile");
327	<	$self->{topbf}->ParseBuildFile($self->{localtop},
328	<	$self->{projconfigdir},$self->{buildfilename});
329	<
330	<	my @ClassPaths=split /:/, $self->{topbf}->BlockClassPath();
331	<	foreach $BClassPath ( @ClassPaths ) {
332	<	next if ( $BClassPath eq "");
333	<	push @{$self->{LoBCA}}, [ split /\//, $BClassPath ];
334	<	}
335	<
313	>	$ClassDir=~s/^\.\///;
314	>	return ( $Class, $ClassDir, $bf);
315		}

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