[apple/libc.git] / xcodescripts / generate_features.pl

#!/usr/bin/perl

# Generates the libc-features.h files used to control #ifdef behaviour in Libc
use warnings;
use Data::Dumper;
use File::Path qw(mkpath);

#printf Dumper(\%ENV);

my $unifdef = 0;
my %unifdefs = ();
my $bash = 0;
if (scalar(@ARGV) > 0) {
	$unifdef = 1 if $ARGV[0] =~ /--unifdef/;
	$bash = 1 if $ARGV[0] =~ /--bash/;
}

for my $arch (split(/ /, $ENV{"ARCHS"}))
{
	# set ENV{"CURRENT_ARCH"} so we can predicate on it
	$ENV{"CURRENT_ARCH"} = $arch;

	# BridgeOS shares the same platform name than the watch so
	# we need to fix it and pick the right configuration.
	my $platformName = $ENV{"PLATFORM_NAME"};
	if ($ENV{"RC_BRIDGE"} eq "YES") {
		$platformName = "bridgeos";
	}

	$platformName =~ s/simulator/os/;

	my $platformPath = $ENV{"SRCROOT"} . "/Platforms/" . $platformName . "/Makefile.inc";
	my $featuresHeaderDir = $ENV{"DERIVED_FILES_DIR"}."/".$arch;
	my $featuresHeader = $featuresHeaderDir."/libc-features.h";

	open FEATURESFILE, "<$platformPath" or die "Unable to open: $platformPath";

	my %features = ();
	my $skip = 0;
	my $nested = 0;

	while (<FEATURESFILE>) {
		next if $_ =~ /\s*#/;
		
		if ($_ =~ /^.endif/) {
			$skip-- if $skip > 0;
			$nested--;
		}

		elsif ($_ =~ /^\.if\s+(\S+)\s+(\S+)/) {
			# an if statement, very rudimentary regex against envvar
			my $envvar = $1;
			my $regex = $2;
			
			$nested++;
			if (!defined($ENV{$envvar}) || ($ENV{$envvar} !~ /$regex/)) {
				$skip += 1;
			}
		}
			
		elsif ($_ =~ /^\s*([^= ]+)\s*=\s*(\d)/) {
			if ($skip == 0) {
				if ($2 == 1) {
					$features{$1} = $2;
				} elsif (defined($features{$1})) {
					delete $features{$1};
				}
			}
		}
	}

	close FEATURESFILE;
	
	if ($bash == 1) {
		for my $f (keys %features) {
			print "$f=$features{$f} ";
		}
		printf "\n";
		exit 0;
	}

	elsif ($unifdef == 1) {
		# assume FEATURE_BLOCKS was on by default
		$unifdefs{"UNIFDEF_BLOCKS"} = 1;
		$unifdefs{"UNIFDEF_LEGACY_64_APIS"} = defined($features{"FEATURE_LEGACY_64_APIS"});
		$unifdefs{"UNIFDEF_LEGACY_RUNE_APIS"} = defined($features{"FEATURE_LEGACY_RUNE_APIS"});
		$unifdefs{"UNIFDEF_LEGACY_UTMP_APIS"} = defined($features{"FEATURE_LEGACY_UTMP_APIS"});
		
		my $output = "";
		for my $d (keys %unifdefs) {
			$output .= " " . ($unifdefs{$d} == 1 ? "-D" : "-U") . $d;
		}
		
		chomp $output;
		print "$output\n";
		exit 0;
	}
	
	elsif ($unifdef == 0) {
		# If we touch this file on every build, then every other iterative build in Xcode will rebuild *everything*
		my $platform_mtime = (stat($platformPath))[9];
		my $header_mtime = (stat($featuresHeader))[9];

		if (defined($header_mtime) && defined($platform_mtime) && ($header_mtime > $platform_mtime)) {
			exit 0;
		}

		printf $arch." features:\n";
		printf Dumper(\%features);

		if ($nested != 0) {
			die "Unbalanced .if/.endif directive";
		}

		# And the meat, new header options should go under here
		if (! -d $featuresHeaderDir) {
			mkpath $featuresHeaderDir or die "Unable to mkdir: $featuresHeaderDir";
		}
		open HEADER, ">$featuresHeader" or die "Unable to open (for writing): $featuresHeader";

		printf HEADER "#ifndef _LIBC_FEATURES_H_\n";
		printf HEADER "#define _LIBC_FEATURES_H_\n\n";

		my $shortarch = $arch;
		$shortarch =~ s/armv\d+[a-z]?/arm/g;

		# map all arm64 subtypes to arm64
		$shortarch =~ s/arm64[_a-z0-9]?/arm64/g;

		printf HEADER "#if !defined(__".$shortarch."__)\n";
		printf HEADER "#error Mismatched libc-features.h architecture\n";
		printf HEADER "#endif\n\n";

		if (defined($features{"FEATURE_LEGACY_RUNE_APIS"})) {
			printf HEADER "#define UNIFDEF_LEGACY_RUNE_APIS 1\n";
		} else {
			printf HEADER "/* #undef UNIFDEF_LEGACY_RUNE_APIS */\n";
		}

		if (defined($features{"FEATURE_LEGACY_CRT1_ENVIRON"})) {
			printf HEADER "#define LEGACY_CRT1_ENVIRON 1\n";
		} else {
			printf HEADER "/* #undef LEGACY_CRT1_ENVIRON */\n";
		}

		if (defined($features{"FEATURE_LEGACY_UTMP_APIS"})) {
			printf HEADER "#define UNIFDEF_LEGACY_UTMP_APIS 1\n";
		} else {
			printf HEADER "/* #undef UNIFDEF_LEGACY_UTMP_APIS */\n";
		}

		if (defined($features{"FEATURE_ONLY_1050_VARIANTS"})) {
			printf HEADER "#if !__DARWIN_ONLY_VERS_1050\n";
			printf HEADER "#  error Feature mismatch: __DARWIN_ONLY_VERS_1050 == 0\n";
			printf HEADER "#endif /* !__DARWIN_ONLY_VERS_1050 */\n";
		} else {
			printf HEADER "#if __DARWIN_ONLY_VERS_1050\n";
			printf HEADER "#  error Feature mismatch: __DARWIN_ONLY_VERS_1050 == 1\n";
			printf HEADER "#endif /* __DARWIN_ONLY_VERS_1050 */\n";
		}

		if (defined($features{"FEATURE_ONLY_UNIX_CONFORMANCE"})) {
			printf HEADER "#if !__DARWIN_ONLY_UNIX_CONFORMANCE\n";
			printf HEADER "#  error Feature mismatch: __DARWIN_ONLY_UNIX_CONFORMANCE == 0\n";
			printf HEADER "#endif /* !__DARWIN_ONLY_UNIX_CONFORMANCE */\n";
		} else {
			printf HEADER "#if __DARWIN_ONLY_UNIX_CONFORMANCE\n";
			printf HEADER "#  error Feature mismatch: __DARWIN_ONLY_UNIX_CONFORMANCE == 1\n";
			printf HEADER "#endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */\n";
		}

		if (defined($features{"FEATURE_ONLY_64_BIT_INO_T"})) {
			printf HEADER "#if !__DARWIN_ONLY_64_BIT_INO_T\n";
			printf HEADER "#  error Feature mismatch: __DARWIN_ONLY_64_BIT_INO_T == 0\n";
			printf HEADER "#endif /* !__DARWIN_ONLY_64_BIT_INO_T */\n";
		} else {
			printf HEADER "#if __DARWIN_ONLY_64_BIT_INO_T\n";
			printf HEADER "#  error Feature mismatch: __DARWIN_ONLY_64_BIT_INO_T == 1\n";
			printf HEADER "#endif /* __DARWIN_ONLY_64_BIT_INO_T */\n";
		}

		if (defined($features{"FEATURE_PATCH_3417676"})) {
			printf HEADER "#define __APPLE_PR3417676_HACK__ 1\n";
		} else {
			printf HEADER "/* #undef __APPLE_PR3417676_HACK__ */\n";
		}

		if (defined($features{"FEATURE_PLOCKSTAT"})) {
			printf HEADER "#define PLOCKSTAT 1\n";
		} else {
			printf HEADER "/* #undef PLOCKSTAT */\n";
		}

		if (defined($features{"FEATURE_TIMEZONE_CHANGE_NOTIFICATION"})) {
			printf HEADER "#define NOTIFY_TZ 1\n";
		} else {
			printf HEADER "/* #undef NOTIFY_TZ */\n";
		}

		if (defined($features{"FEATURE_SMALL_STDIOBUF"})) {
			printf HEADER "#define FEATURE_SMALL_STDIOBUF 1\n";
		} else {
			printf HEADER "/* #undef FEATURE_SMALL_STDIOBUF */\n";
		}

		if (defined($features{"FEATURE_XPRINTF_PERF"})) {
			printf HEADER "#define XPRINTF_PERF 1\n";
		} else {
			printf HEADER "/* #undef XPRINTF_PERF */\n";
		}

		if (defined($features{"FEATURE_SIGNAL_RESTRICTION"})) {
			printf HEADER "#define FEATURE_SIGNAL_RESTRICTION 1\n";
		} else {
			printf HEADER "/* #undef FEATURE_SIGNAL_RESTRICTION */\n";
		}

		printf HEADER "#endif // _LIBC_FEATURES_H_\n";
		close HEADER;
	}
}
	
exit 0;
Commit	Line	Data
ad3c9f2a A	1	#!/usr/bin/perl
ad3c9f2a A	2
ad3c9f2a A	3	# Generates the libc-features.h files used to control #ifdef behaviour in Libc
	4	use warnings;
	5	use Data::Dumper;
	6	use File::Path qw(mkpath);
	7
	8	#printf Dumper(\%ENV);
	9
	10	my $unifdef = 0;
	11	my %unifdefs = ();
	12	my $bash = 0;
	13	if (scalar(@ARGV) > 0) {
	14	$unifdef = 1 if $ARGV[0] =~ /--unifdef/;
	15	$bash = 1 if $ARGV[0] =~ /--bash/;
	16	}
	17
	18	for my $arch (split(/ /, $ENV{"ARCHS"}))
	19	{
	20	# set ENV{"CURRENT_ARCH"} so we can predicate on it
	21	$ENV{"CURRENT_ARCH"} = $arch;
974e3884 A	22
	23	# BridgeOS shares the same platform name than the watch so
	24	# we need to fix it and pick the right configuration.
ad3c9f2a	25	my $platformName = $ENV{"PLATFORM_NAME"};
974e3884 A	26	if ($ENV{"RC_BRIDGE"} eq "YES") {
	27	$platformName = "bridgeos";
	28	}
	29
23e20b00	30	$platformName =~ s/simulator/os/;
ad3c9f2a A	31
	32	my $platformPath = $ENV{"SRCROOT"} . "/Platforms/" . $platformName . "/Makefile.inc";
	33	my $featuresHeaderDir = $ENV{"DERIVED_FILES_DIR"}."/".$arch;
	34	my $featuresHeader = $featuresHeaderDir."/libc-features.h";
	35
	36	open FEATURESFILE, "<$platformPath" or die "Unable to open: $platformPath";
	37
	38	my %features = ();
	39	my $skip = 0;
	40	my $nested = 0;
	41
	42	while (<FEATURESFILE>) {
	43	next if $_ =~ /\s*#/;
	44
	45	if ($_ =~ /^.endif/) {
	46	$skip-- if $skip > 0;
	47	$nested--;
	48	}
	49
	50	elsif ($_ =~ /^\.if\s+(\S+)\s+(\S+)/) {
	51	# an if statement, very rudimentary regex against envvar
	52	my $envvar = $1;
	53	my $regex = $2;
	54
	55	$nested++;
6465356a	56	if (!defined($ENV{$envvar}) \|\| ($ENV{$envvar} !~ /$regex/)) {
ad3c9f2a A	57	$skip += 1;
	58	}
	59	}
	60
	61	elsif ($_ =~ /^\s([^= ]+)\s=\s*(\d)/) {
	62	if ($skip == 0) {
	63	if ($2 == 1) {
	64	$features{$1} = $2;
	65	} elsif (defined($features{$1})) {
	66	delete $features{$1};
	67	}
	68	}
	69	}
	70	}
	71
	72	close FEATURESFILE;
	73
	74	if ($bash == 1) {
	75	for my $f (keys %features) {
	76	print "$f=$features{$f} ";
	77	}
	78	printf "\n";
	79	exit 0;
	80	}
	81
	82	elsif ($unifdef == 1) {
	83	# assume FEATURE_BLOCKS was on by default
	84	$unifdefs{"UNIFDEF_BLOCKS"} = 1;
	85	$unifdefs{"UNIFDEF_LEGACY_64_APIS"} = defined($features{"FEATURE_LEGACY_64_APIS"});
	86	$unifdefs{"UNIFDEF_LEGACY_RUNE_APIS"} = defined($features{"FEATURE_LEGACY_RUNE_APIS"});
	87	$unifdefs{"UNIFDEF_LEGACY_UTMP_APIS"} = defined($features{"FEATURE_LEGACY_UTMP_APIS"});
ad3c9f2a A	88
	89	my $output = "";
	90	for my $d (keys %unifdefs) {
	91	$output .= " " . ($unifdefs{$d} == 1 ? "-D" : "-U") . $d;
	92	}
	93
	94	chomp $output;
	95	print "$output\n";
	96	exit 0;
	97	}
	98
	99	elsif ($unifdef == 0) {
	100	# If we touch this file on every build, then every other iterative build in Xcode will rebuild everything
	101	my $platform_mtime = (stat($platformPath))[9];
	102	my $header_mtime = (stat($featuresHeader))[9];
	103
6465356a	104	if (defined($header_mtime) && defined($platform_mtime) && ($header_mtime > $platform_mtime)) {
ad3c9f2a A	105	exit 0;
	106	}
	107
	108	printf $arch." features:\n";
	109	printf Dumper(\%features);
	110
	111	if ($nested != 0) {
	112	die "Unbalanced .if/.endif directive";
	113	}
	114
	115	# And the meat, new header options should go under here
	116	if (! -d $featuresHeaderDir) {
	117	mkpath $featuresHeaderDir or die "Unable to mkdir: $featuresHeaderDir";
	118	}
	119	open HEADER, ">$featuresHeader" or die "Unable to open (for writing): $featuresHeader";
	120
	121	printf HEADER "#ifndef _LIBC_FEATURES_H_\n";
	122	printf HEADER "#define _LIBC_FEATURES_H_\n\n";
	123
	124	my $shortarch = $arch;
	125	$shortarch =~ s/armv\d+[a-z]?/arm/g;
b061a43b A	126
	127	# map all arm64 subtypes to arm64
	128	$shortarch =~ s/arm64[_a-z0-9]?/arm64/g;
ad3c9f2a A	129
	130	printf HEADER "#if !defined(__".$shortarch."__)\n";
	131	printf HEADER "#error Mismatched libc-features.h architecture\n";
	132	printf HEADER "#endif\n\n";
	133
	134	if (defined($features{"FEATURE_LEGACY_RUNE_APIS"})) {
	135	printf HEADER "#define UNIFDEF_LEGACY_RUNE_APIS 1\n";
	136	} else {
	137	printf HEADER "/* #undef UNIFDEF_LEGACY_RUNE_APIS */\n";
	138	}
	139
	140	if (defined($features{"FEATURE_LEGACY_CRT1_ENVIRON"})) {
	141	printf HEADER "#define LEGACY_CRT1_ENVIRON 1\n";
	142	} else {
	143	printf HEADER "/* #undef LEGACY_CRT1_ENVIRON */\n";
	144	}
	145
	146	if (defined($features{"FEATURE_LEGACY_UTMP_APIS"})) {
	147	printf HEADER "#define UNIFDEF_LEGACY_UTMP_APIS 1\n";
	148	} else {
	149	printf HEADER "/* #undef UNIFDEF_LEGACY_UTMP_APIS */\n";
	150	}
	151
ad3c9f2a A	152	if (defined($features{"FEATURE_ONLY_1050_VARIANTS"})) {
	153	printf HEADER "#if !__DARWIN_ONLY_VERS_1050\n";
	154	printf HEADER "# error Feature mismatch: __DARWIN_ONLY_VERS_1050 == 0\n";
	155	printf HEADER "#endif /* !__DARWIN_ONLY_VERS_1050 */\n";
	156	} else {
	157	printf HEADER "#if __DARWIN_ONLY_VERS_1050\n";
	158	printf HEADER "# error Feature mismatch: __DARWIN_ONLY_VERS_1050 == 1\n";
	159	printf HEADER "#endif /* __DARWIN_ONLY_VERS_1050 */\n";
	160	}
	161
	162	if (defined($features{"FEATURE_ONLY_UNIX_CONFORMANCE"})) {
	163	printf HEADER "#if !__DARWIN_ONLY_UNIX_CONFORMANCE\n";
	164	printf HEADER "# error Feature mismatch: __DARWIN_ONLY_UNIX_CONFORMANCE == 0\n";
	165	printf HEADER "#endif /* !__DARWIN_ONLY_UNIX_CONFORMANCE */\n";
	166	} else {
	167	printf HEADER "#if __DARWIN_ONLY_UNIX_CONFORMANCE\n";
	168	printf HEADER "# error Feature mismatch: __DARWIN_ONLY_UNIX_CONFORMANCE == 1\n";
	169	printf HEADER "#endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */\n";
	170	}
	171
	172	if (defined($features{"FEATURE_ONLY_64_BIT_INO_T"})) {
	173	printf HEADER "#if !__DARWIN_ONLY_64_BIT_INO_T\n";
	174	printf HEADER "# error Feature mismatch: __DARWIN_ONLY_64_BIT_INO_T == 0\n";
	175	printf HEADER "#endif /* !__DARWIN_ONLY_64_BIT_INO_T */\n";
	176	} else {
	177	printf HEADER "#if __DARWIN_ONLY_64_BIT_INO_T\n";
	178	printf HEADER "# error Feature mismatch: __DARWIN_ONLY_64_BIT_INO_T == 1\n";
	179	printf HEADER "#endif /* __DARWIN_ONLY_64_BIT_INO_T */\n";
	180	}
	181
	182	if (defined($features{"FEATURE_PATCH_3417676"})) {
	183	printf HEADER "#define __APPLE_PR3417676_HACK__ 1\n";
	184	} else {
	185	printf HEADER "/* #undef __APPLE_PR3417676_HACK__ */\n";
	186	}
	187
ad3c9f2a A	188	if (defined($features{"FEATURE_PLOCKSTAT"})) {
	189	printf HEADER "#define PLOCKSTAT 1\n";
	190	} else {
	191	printf HEADER "/* #undef PLOCKSTAT */\n";
	192	}
	193
	194	if (defined($features{"FEATURE_TIMEZONE_CHANGE_NOTIFICATION"})) {
	195	printf HEADER "#define NOTIFY_TZ 1\n";
	196	} else {
	197	printf HEADER "/* #undef NOTIFY_TZ */\n";
	198	}
	199
6465356a A	200	if (defined($features{"FEATURE_SMALL_STDIOBUF"})) {
	201	printf HEADER "#define FEATURE_SMALL_STDIOBUF 1\n";
	202	} else {
	203	printf HEADER "/* #undef FEATURE_SMALL_STDIOBUF */\n";
	204	}
	205
	206	if (defined($features{"FEATURE_XPRINTF_PERF"})) {
	207	printf HEADER "#define XPRINTF_PERF 1\n";
ad3c9f2a	208	} else {
6465356a	209	printf HEADER "/* #undef XPRINTF_PERF */\n";
ad3c9f2a A	210	}
ad3c9f2a A	211
5f125488 A	212	if (defined($features{"FEATURE_SIGNAL_RESTRICTION"})) {
	213	printf HEADER "#define FEATURE_SIGNAL_RESTRICTION 1\n";
	214	} else {
	215	printf HEADER "/* #undef FEATURE_SIGNAL_RESTRICTION */\n";
	216	}
	217
ad3c9f2a A	218	printf HEADER "#endif // _LIBC_FEATURES_H_\n";
	219	close HEADER;
	220	}
	221	}
	222
	223	exit 0;