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|
#!/usr/bin/perl -w
# -----------------------------------------------------------------------------
my $cc = $ENV{'REAL_CC'} || 'cc';
my $check = $ENV{'CHECK'} || 'check';
my $m64 = 0;
my $has_specs = 0;
my $do_check = 0;
my $do_compile = 1;
my $verbose = 0;
foreach (@ARGV) {
# Look for a .c file. We don't want to run the checker on .o or .so files
# in the link run. (This simplistic check knows nothing about options
# with arguments, but it seems to do the job.)
$do_check = 1 if /^[^-].*\.c$/;
# Ditto for stdin.
$do_check = 1 if $_ eq '-';
$m64 = 1 if /^-m64$/;
if (/^-specs=(.*)$/) {
$check .= &add_specs ($1);
$has_specs = 1;
next;
}
if ($_ eq '-no-compile') {
$do_compile = 0;
next;
}
# If someone adds "-E", don't pre-process twice.
$do_compile = 0 if $_ eq '-E';
$verbose = 1 if $_ eq '-v';
my $this_arg = ' ' . "e_arg ($_);
$cc .= $this_arg unless &check_only_option ($_);
$check .= $this_arg;
}
if ($do_check) {
if (!$has_specs) {
$check .= &add_specs ('host_arch_specs');
$check .= &add_specs ('host_os_specs');
}
print "$check\n" if $verbose;
# exit 1;
system ($check);
}
if ($do_compile) {
print "$cc\n" if $verbose;
exec ($cc);
}
exit 0;
# -----------------------------------------------------------------------------
# Check if an option is for "check" only.
sub check_only_option {
my ($arg) = @_;
return 1 if $arg =~ /^-W(no-?)?(default-bitfield-sig|bitwise|typesign)$/;
return 0;
}
# -----------------------------------------------------------------------------
# Simple arg-quoting function. Just adds backslashes when needed.
sub quote_arg {
my ($arg) = @_;
return "''" if $arg eq '';
return join ('',
map {
m|^[-a-zA-Z0-9._/,=]+$| ? $_ : "\\" . $_;
} (split (//, $arg)));
}
# -----------------------------------------------------------------------------
sub integer_types {
my ($char,@dummy) = @_;
my %pow2m1 =
(8 => '127',
16 => '32767',
32 => '2147483647',
64 => '9223372036854775807',
);
my @types = (['SCHAR',''], ['SHRT',''], ['INT',''], ['LONG','L'], ['LONG_LONG','LL']);
my $result = " -D__CHAR_BIT__=$char";
while (@types) {
my $bits = shift @_;
my ($name,$suffix) = @{ shift @types };
die "$0: wierd number of bits." unless exists $pow2m1{$bits};
$result .= " -D__${name}_MAX__=" . $pow2m1{$bits} . $suffix;
}
return $result;
}
# -----------------------------------------------------------------------------
sub float_types {
my ($has_inf,$has_qnan,$dec_dig,@bitsizes) = @_;
my $result = " -D__FLT_RADIX__=2";
$result .= " -D__FINITE_MATH_ONLY__=" . ($has_inf || $has_qnan ? '0' : '1');
$result .= " -D__DECIMAL_DIG__=$dec_dig";
my %constants =
(24 =>
{
'MIN' => '1.17549435e-38',
'MAX' => '3.40282347e+38',
'EPSILON' => '1.19209290e-7',
'DENORM_MIN' => '1.40129846e-45',
},
53 =>
{
'MIN' => '2.2250738585072014e-308',
'MAX' => '1.7976931348623157e+308',
'EPSILON' => '2.2204460492503131e-16',
'DENORM_MIN' => '4.9406564584124654e-324',
},
64 =>
{
'MIN' => '3.36210314311209350626e-4932',
'MAX' => '1.18973149535723176502e+4932',
'EPSILON' => '1.08420217248550443401e-19',
'DENORM_MIN' => '3.64519953188247460253e-4951',
},
113 =>
{
'MIN' => '3.36210314311209350626267781732175260e-4932',
'MAX' => '1.18973149535723176508575932662800702e+4932',
'EPSILON' => '1.92592994438723585305597794258492732e-34',
'DENORM_MIN' => '6.47517511943802511092443895822764655e-4966',
},
);
my @types = (['FLT','F'], ['DBL',''], ['LDBL','L']);
while (@types) {
my ($mant_bits,$exp_bits) = @{ shift @bitsizes };
my ($name,$suffix) = @{ shift @types };
my $h = $constants{$mant_bits};
die "$0: wierd number of mantissa bits." unless $h;
my $mant_dig = int (($mant_bits - 1) * log (2) / log (10));
my $max_exp = 1 << ($exp_bits - 1);
my $min_exp = 3 - $max_exp;
my $max_10_exp = int ($max_exp * log (2) / log (10));
my $min_10_exp = -int (-$min_exp * log (2) / log (10));
$result .= " -D__${name}_MANT_DIG__=$mant_bits";
$result .= " -D__${name}_DIG__=$mant_dig";
$result .= " -D__${name}_MIN_EXP__='($min_exp)'";
$result .= " -D__${name}_MAX_EXP__=$max_exp";
$result .= " -D__${name}_MIN_10_EXP__='($min_10_exp)'";
$result .= " -D__${name}_MAX_10_EXP__=$max_10_exp";
$result .= " -D__${name}_HAS_INFINITY__=" . ($has_inf ? '1' : '0');
$result .= " -D__${name}_HAS_QUIET_NAN__=" . ($has_qnan ? '1' : '0');;
foreach my $inf (sort keys %$h) {
$result .= " -D__${name}_${inf}__=" . $h->{$inf} . $suffix;
}
}
return $result;
}
# -----------------------------------------------------------------------------
sub define_size_t {
my ($text) = @_;
# We have to undef in order to override check's internal definition.
return ' -U__SIZE_TYPE__ ' . "e_arg ("-D__SIZE_TYPE__=$text");
}
# -----------------------------------------------------------------------------
sub add_specs {
my ($spec) = @_;
if ($spec eq 'sunos') {
return &add_specs ('unix') .
' -D__sun__=1 -D__sun=1 -Dsun=1' .
' -D__svr4__=1 -DSVR4=1' .
' -D__STDC__=0' .
' -D_REENTRANT' .
' -D_SOLARIS_THREADS' .
' -DNULL="((void *)0)"';
} elsif ($spec eq 'linux') {
return &add_specs ('unix') .
' -D__linux__=1 -D__linux=1 -Dlinux=linux' .
' -D__STDC__=1';
} elsif ($spec eq 'unix') {
return ' -Dunix=1 -D__unix=1 -D__unix__=1';
} elsif ($spec eq 'i86') {
return (' -Di386=1 -D__i386=1 -D__i386__=1' .
&integer_types (8, 16, 32, $m64 ? 64 : 32, 64) .
&float_types (1, 1, 21, [24,8], [53,11], [64,15]) .
&define_size_t ($m64 ? "long unsigned int" : "unsigned int"));
} elsif ($spec eq 'sparc') {
return (' -Dsparc=1 -D__sparc=1 -D__sparc__=1' .
&integer_types (8, 16, 32, $m64 ? 64 : 32, 64) .
&float_types (1, 1, 33, [24,8], [53,11], [113,15]) .
&define_size_t ($m64 ? "long unsigned int" : "unsigned int"));
} elsif ($spec eq 'host_os_specs') {
my $os = `uname -s`;
chomp $os;
return &add_specs (lc $os);
} elsif ($spec eq 'host_arch_specs') {
my $arch = `uname -m`;
chomp $arch;
if ($arch =~ /^(i.?86|athlon)$/i) {
return &add_specs ('i86');
} elsif ($arch =~ /^(sun4u)$/i) {
return &add_specs ('sparc');
}
} else {
die "$0: invalid specs: $spec\n";
}
}
# -----------------------------------------------------------------------------
|
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