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|
# PDL interface to FFTW
# Makefile.PL for a package defined by PP code.
use ExtUtils::MakeMaker;
PDL::Core::Dev->import();
BEGIN {
$msg = ""; $forcebuild=0; # Note: forcebuild not used
if (defined $PDL_CONFIG{WITH_FFTW} && $PDL_CONFIG{WITH_FFTW}==0) {
$msg = "\n Will skip build of PDL::FFTW on this system \n";
goto skip;
}
if (defined $PDL_CONFIG{WITH_FFTW} && $PDL_CONFIG{WITH_FFTW}==1) {
print "\n Will forcibly try and build PDL::FFTW on this system \n\n";
$forcebuild=1;
}
# Setup the FFTW library we will link to: (single/double precision)
# Default is double precision
$want_float = 0;
$want_double = 1;
if (defined $PDL_CONFIG{FFTW_TYPE} && $PDL_CONFIG{FFTW_TYPE} =~ /single/i ) {
$want_float = 1;
$want_double = 0;
}
$found_float = $found_double = 'none';
# Look for FFTW includes/libs
# default locations:
@FFTW_inc_locations = ('/usr/local/include');
@FFTW_lib_locations = ('/lib','/usr/lib','/usr/local/lib');
# get locations from perldl.conf, if specified there:
@FFTW_inc_locations = @{$PDL_CONFIG{FFTW_INC}} if( defined $PDL_CONFIG{FFTW_INC} );
@FFTW_lib_locations = @{$PDL_CONFIG{FFTW_LIBS}} if( defined $PDL_CONFIG{FFTW_LIBS} );
foreach $i (@FFTW_inc_locations) {
if (-e "$i/dfftw.h") {
print "Found FFTW2 double version in $i/dfftw.h !\n";
$double_rinclude = 'drfftw.h';
$double_lib = '-ldfftw -ldrfftw';
# Inc found, now try to find libs:
if( findLibs($double_lib, @FFTW_lib_locations)){
print " FFTW Libs also found.\n";
$found_double = 'dfftw.h';
}
}
if (-e "$i/sfftw.h") {
print "Found FFTW2 single version $i/sfftw.h !\n";
$single_rinclude = 'srfftw.h';
$single_lib = '-lsfftw -lsrfftw';
# Inc found, now try to find libs:
if( findLibs($single_lib, @FFTW_lib_locations)){
print " FFTW Libs also found.\n";
$found_float = 'sfftw.h';
}
}
if (-e "$i/fftw.h") {
open F,"$i/fftw.h";
$is_float=0;
while (<F>) {
if (/define FFTW_ENABLE_FLOAT 1/) {$is_float=1;}
}
close F;
if ($is_float) {
print "Found FFTW2 single version in $i/fftw.h !\n";
$single_rinclude = 'rfftw.h';
$single_lib = '-lfftw -lrfftw';
# Inc found, now try to find libs:
if( findLibs($single_lib, @FFTW_lib_locations)){
print " FFTW Libs also found.\n";
$found_float = 'fftw.h';
}
}
else {
print "Found FFTW2 double version in $i/fftw.h !\n";
$double_rinclude = 'rfftw.h';
$double_lib = '-lfftw -lrfftw';
if( findLibs($double_lib, @FFTW_lib_locations)){
print " FFTW Libs also found.\n";
$found_double = 'fftw.h';
}
}
}
}
$donot = 1;
$wanted_not_found = 0;
# want float, found float
if ($found_float ne 'none' && $want_float ) {
$include = $found_float;
print "Building single version\n";
$pdltype = 'PDL_F';
$lib = $single_lib;
$rinclude = $single_rinclude;
$out = '$fftwtype=\'float\'';
$donot = 0;
}
# want double, found double
elsif ($found_double ne 'none' && $want_double ) {
$include = $found_double;
print "Building double version\n";
$pdltype = 'PDL_D';
$lib = $double_lib;
$rinclude = $double_rinclude;
$out = '$fftwtype=\'double\'';
$donot = 0;
}
if ( $donot ) {
$msg .= "\n Skipping build of PDL::FFTW.\n";
# maybe we found something, but it wasn't what was wanted...
if ( $found_double ne 'none' )
{ $msg .= "Found double version, wanted float!\n" }
if ( $found_float ne 'none' )
{ $msg .= "Found float version, wanted double!\n" }
}
skip:
if ($msg ne "" && $forcebuild==0) {
warn $msg."\n";
open(OUT,">Makefile");
print OUT "fred:\n";
print OUT "\t\@echo \n";
my $emsg = substr($msg, 1); # Get rid of leading \n
$emsg =~ s/\n+$//; # Remove final \n(s)
$emsg =~ s/"//g;
$emsg =~ s/\n/"\n\t\@echo "/g; # Echo other lines
print OUT "\t\@echo \"$emsg\"\n";
print OUT "\t\@echo \n";
print OUT "\nall: fred\n";
print OUT "\ntest: fred\n";
print OUT <<EOT;
clean ::
-mv Makefile Makefile.old
realclean ::
rm -rf Makefile Makefile.old
EOT
close(OUT);
$donot = 1;
} else {
print "\n Building PDL::FFTW. Turn off WITH_FFTW if there are any problems\n\n";
}
# Sub to find libs
sub findLibs {
my ($libstring, @libdirs) = @_;
# make a list of libs from the libstring
my @libs = split ' ',$double_lib;
grep s/\-l//g, @libs;
grep $_ = "lib$_.a", @libs;
my %libs;
my $lib;
foreach $libdir(@libdirs){
foreach $lib(@libs){
if( -e "$libdir/$lib"){
$libs{$lib} = 1;
}
}
}
if( scalar(keys %libs) == scalar(@libs) ){
return 1; # all libs in the list were found
}
print " Libs: '".join("', '",@libs)."' Not Found\n";
print " Looked in: '".join("', '",@libdirs)."'\n";
return 0; # all libs in the list not found
}
}
##############################################################################
return if $donot;
open F,'>typespec';
print F $out,";\n";
print F 'pp_addhdr(\'',"\n";
print F '#include "',$include,'"',"\n";
print F '#include "',$rinclude,'"',"\n";
print F '#define PDL_MYTYPE ',$pdltype,"\n";
print F '\');',"\n";
close F;
@pack = (["fftw.pd",FFTW,PDL::FFTW]);
%hash = pdlpp_stdargs_int(@::pack);
$hash{INC} .= " -I".join(' -I',@FFTW_inc_locations);
$hash{clean}->{FILES} .= ' typespec';
push @{$hash{LIBS}},"-lm -L".join(" -L",@FFTW_lib_locations)." $lib";
WriteMakefile(%hash);
sub MY::postamble {
pdlpp_postamble_int(@::pack);
} # Add genpp rule
|
