X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/ee580363108be8ac33155650c6c18d2e5cf051f3..abbb319842d03cfdb615b06ae57e058d7e36b88c:/utils/h2ph.PL diff --git a/utils/h2ph.PL b/utils/h2ph.PL index 2c685e0..5fe2e9f 100644 --- a/utils/h2ph.PL +++ b/utils/h2ph.PL @@ -2,6 +2,7 @@ use Config; use File::Basename qw(basename dirname); +use Cwd; # List explicitly here the variables you want Configure to # generate. Metaconfig only looks for shell variables, so you @@ -13,6 +14,7 @@ use File::Basename qw(basename dirname); # This forces PL files to create target in same directory as PL file. # This is so that make depend always knows where to find PL derivatives. +$origdir = cwd; chdir dirname($0); $file = basename($0, '.PL'); $file .= '.com' if $^O eq 'VMS'; @@ -34,11 +36,21 @@ $Config{startperl} print OUT <<'!NO!SUBS!'; +use strict; + use Config; use File::Path qw(mkpath); use Getopt::Std; -getopts('Dd:rlh'); +# Make sure read permissions for all are set: +if (defined umask && (umask() & 0444)) { + umask (umask() & ~0444); +} + +getopts('Dd:rlhaQe'); +use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e); +die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a); +my @inc_dirs = inc_dirs() if $opt_a; my $Exit = 0; @@ -46,20 +58,35 @@ my $Dest_dir = $opt_d || $Config{installsitearch}; die "Destination directory $Dest_dir doesn't exist or isn't a directory\n" unless -d $Dest_dir; -@isatype = split(' ',<-"); } else { ($outfile = $file) =~ s/\.h$/.ph/ || next; - print "$file -> $outfile\n"; + print "$file -> $outfile\n" unless $opt_Q; if ($file =~ m|^(.*)/|) { $dir = $1; mkpath "$Dest_dir/$dir"; } + + if ($opt_a) { # automagic mode: locate header file in @inc_dirs + foreach (@inc_dirs) { + chdir $_; + last if -f $file; + } + } + open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next); open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n"; } - while () { - chop; - while (/\\$/) { - chop; - $_ .= ; - chop; - } - print OUT "# $_\n" if $opt_D; - if (s:/\*:\200:g) { - s:\*/:\201:g; - s/\200[^\201]*\201//g; # delete single line comments - if (s/\200.*//) { # begin multi-line comment? - $_ .= '/*'; - $_ .= ; - redo; - } - } - if (s/^\s*#\s*//) { + + print OUT + "require '_h2ph_pre.ph';\n\n", + "no warnings 'redefine';\n\n"; + + while (defined (local $_ = next_line($file))) { + if (s/^\s*\#\s*//) { if (s/^define\s+(\w+)//) { $name = $1; $new = ''; s/\s+$//; + s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0 if (s/^\(([\w,\s]*)\)//) { $args = $1; - my $proto = '() '; + my $proto = '() '; if ($args ne '') { - $proto = ''; - foreach $arg (split(/,\s*/,$args)) { + $proto = ''; + foreach my $arg (split(/,\s*/,$args)) { $arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/; $curargs{$arg} = 1; } $args =~ s/\b(\w)/\$$1/g; - $args = "local($args) = \@_;\n$t "; + $args = "my($args) = \@_;\n$t "; } s/^\s+//; expr(); $new =~ s/(["\\])/\\$1/g; #"]); + EMIT: $new = reindent($new); $args = reindent($args); if ($t ne '') { @@ -146,6 +172,7 @@ while (defined ($file = next_file())) { $args = reindent($args); if ($t ne '') { $new =~ s/(['\\])/\\$1/g; #']); + if ($opt_h) { print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n"; $eval_index++; @@ -153,45 +180,49 @@ while (defined ($file = next_file())) { print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n"; } } else { + # Shunt around such directives as `#define FOO FOO': + next if " \&$name" eq $new; + print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n"; } } - } elsif (/^(include|import)\s*[<"](.*)[>"]/) { - ($incl = $2) =~ s/\.h$/.ph/; - print OUT $t,"require '$incl';\n"; - } elsif(/^include_next\s*[<"](.*)[>"]/) { - ($incl = $1) =~ s/\.h$/.ph/; - # should've read up on #include_next properly before attempting - # to implement it... - # - #print OUT $t, "{\n"; - #$tab += 4; - #$t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - #print OUT $t, "my(\$INC) = shift(\@INC);\n"; - #print OUT $t, "require '$incl';\n"; - #print OUT $t, "unshift(\@INC, \$INC);}\n"; - #$tab -= 4; - #$t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - #print OUT $t, "}\n"; - # - # try this instead: - print OUT ($t, "my(\$i) = 0;\n"); - print OUT ($t, "if(exists(\$INC{$incl})) {\n"); - $tab += 4; - $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - print OUT ($t, "++\$i while (\$i <= \$#INC", - " and \$INC[\$i].'/$incl' ne \$INC{'$incl'});\n"); - print OUT ($t, "\$i = 0 if \$INC[\$i].'/$incl' ne", - " \$INC{'$incl'};\n"); - $tab -= 4; - $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - print OUT ($t, "}\n"); + } elsif (/^(include|import|include_next)\s*[<\"](.*)[>\"]/) { + $incl_type = $1; + $incl = $2; + if (($incl_type eq 'include_next') || + ($opt_e && exists($bad_file{$incl}))) { + $incl =~ s/\.h$/.ph/; + print OUT ($t, + "eval {\n"); + $tab += 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + print OUT ($t, "my(\@REM);\n"); + if ($incl_type eq 'include_next') { + print OUT ($t, + "my(\%INCD) = map { \$INC{\$_} => 1 } ", + "(grep { \$_ eq \"$incl\" } ", + "keys(\%INC));\n"); print OUT ($t, - "eval(\"require '\" . ", - "(\$i ? \$INC[\$i].'/' : '') . \"\$incl';\");"); - # any better? require is smart enough not to try and include a - # file twice, i believe, so require-ing the same actual file - # should end up just being a null operation... + "\@REM = map { \"\$_/$incl\" } ", + "(grep { not exists(\$INCD{\"\$_/$incl\"})", + " and -f \"\$_/$incl\" } \@INC);\n"); + } else { + print OUT ($t, + "\@REM = map { \"\$_/$incl\" } ", + "(grep {-r \"\$_/$incl\" } \@INC);\n"); + } + print OUT ($t, + "require \"\$REM[0]\" if \@REM;\n"); + $tab -= 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + print OUT ($t, + "};\n"); + print OUT ($t, + "warn(\$\@) if \$\@;\n"); + } else { + $incl =~ s/\.h$/.ph/; + print OUT $t,"require '$incl';\n"; + } } elsif (/^ifdef\s+(\w+)/) { print OUT $t,"if(defined(&$1)) {\n"; $tab += 4; @@ -230,37 +261,165 @@ while (defined ($file = next_file())) { print OUT $t,"}\n"; } elsif(/^undef\s+(\w+)/) { print OUT $t, "undef(&$1) if defined(&$1);\n"; + } elsif(/^error\s+(".*")/) { + print OUT $t, "die($1);\n"; } elsif(/^error\s+(.*)/) { - print OUT $t, "die(\"$1\");\n"; + print OUT $t, "die(\"", quotemeta($1), "\");\n"; } elsif(/^warning\s+(.*)/) { - print OUT $t, "warn(\"$1\");\n"; + print OUT $t, "warn(\"", quotemeta($1), "\");\n"; } elsif(/^ident\s+(.*)/) { print OUT $t, "# $1\n"; } + } elsif (/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) { # { for vi + until(/\{[^}]*\}.*;/ || /;/) { + last unless defined ($next = next_line($file)); + chomp $next; + # drop "#define FOO FOO" in enums + $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//; + # #defines in enums (aliases) + $next =~ s/^\s*#\s*define\s+(\w+)\s+(\w+)\s*$/$1 = $2,/; + $_ .= $next; + print OUT "# $next\n" if $opt_D; + } + s/#\s*if.*?#\s*endif//g; # drop #ifdefs + s@/\*.*?\*/@@g; + s/\s+/ /g; + next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; + (my $enum_subs = $3) =~ s/\s//g; + my @enum_subs = split(/,/, $enum_subs); + my $enum_val = -1; + foreach my $enum (@enum_subs) { + my ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; + $enum_name or next; + $enum_value =~ s/^=//; + $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1); + if ($opt_h) { + print OUT ($t, + "eval(\"\\n#line $eval_index $outfile\\n", + "sub $enum_name () \{ $enum_val; \}\") ", + "unless defined(\&$enum_name);\n"); + ++ $eval_index; + } else { + print OUT ($t, + "eval(\"sub $enum_name () \{ $enum_val; \}\") ", + "unless defined(\&$enum_name);\n"); + } + } + } elsif (/^(?:__extension__\s+)?(?:extern|static)\s+(?:__)?inline(?:__)?\s+/ + and !/;\s*$/ and !/{\s*}\s*$/) + { # { for vi + # This is a hack to parse the inline functions in the glibc headers. + # Warning: massive kludge ahead. We suppose inline functions + # are mainly constructed like macros. + while (1) { + last unless defined ($next = next_line($file)); + chomp $next; + undef $_, last if $next =~ /__THROW\s*;/ + or $next =~ /^(__extension__|extern|static)\b/; + $_ .= " $next"; + print OUT "# $next\n" if $opt_D; + last if $next =~ /^}|^{.*}\s*$/; + } + next if not defined; # because it's only a prototype + s/\b(__extension__|extern|static|(?:__)?inline(?:__)?)\b//g; + # violently drop #ifdefs + s/#\s*if.*?#\s*endif//g + and print OUT "# some #ifdef were dropped here -- fill in the blanks\n"; + if (s/^(?:\w|\s|\*)*\s(\w+)\s*//) { + $name = $1; + } else { + warn "name not found"; next; # shouldn't occur... + } + my @args; + if (s/^\(([^()]*)\)\s*(\w+\s*)*//) { + for my $arg (split /,/, $1) { + if ($arg =~ /(\w+)\s*$/) { + $curargs{$1} = 1; + push @args, $1; + } + } + } + $args = ( + @args + ? "my(" . (join ',', map "\$$_", @args) . ") = \@_;\n$t " + : "" + ); + my $proto = @args ? '' : '() '; + $new = ''; + s/\breturn\b//g; # "return" doesn't occur in macros usually... + expr(); + # try to find and perlify local C variables + our @local_variables = (); # needs to be a our(): (?{...}) bug workaround + { + use re "eval"; + my $typelist = join '|', keys %isatype; + $new =~ s[' + (?:(?:__)?const(?:__)?\s+)? + (?:(?:un)?signed\s+)? + (?:long\s+)? + (?:$typelist)\s+ + (\w+) + (?{ push @local_variables, $1 }) + '] + [my \$$1]gx; + $new =~ s[' + (?:(?:__)?const(?:__)?\s+)? + (?:(?:un)?signed\s+)? + (?:long\s+)? + (?:$typelist)\s+ + ' \s+ &(\w+) \s* ; + (?{ push @local_variables, $1 }) + ] + [my \$$1;]gx; + } + $new =~ s/&$_\b/\$$_/g for @local_variables; + $new =~ s/(["\\])/\\$1/g; #"]); + # now that's almost like a macro (we hope) + goto EMIT; } } - print OUT "1;\n"; + $Is_converted{$file} = 1; + if ($opt_e && exists($bad_file{$file})) { + unlink($Dest_dir . '/' . $outfile); + $next = ''; + } else { + print OUT "1;\n"; + queue_includes_from($file) if $opt_a; + } } -exit $Exit; - -sub reindent($) { - my($text) = shift; - $text =~ s/\n/\n /g; - $text =~ s/ /\t/g; - $text; +if ($opt_e && (scalar(keys %bad_file) > 0)) { + warn "Was unable to convert the following files:\n"; + warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n"; } +exit $Exit; + sub expr { + $new = '"(assembly code)"' and return if /\b__asm__\b/; # freak out. + my $joined_args; if(keys(%curargs)) { - my($joined_args) = join('|', keys(%curargs)); + $joined_args = join('|', keys(%curargs)); } while ($_ ne '') { s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of s/^(\s+)// && do {$new .= ' '; next;}; - s/^(0X[0-9A-F]+)[UL]*//i && do {$new .= lc($1); next;}; - s/^(-?\d+\.\d+E[-+]\d+)F?//i && do {$new .= $1; next;}; + s/^0X([0-9A-F]+)[UL]*//i + && do {my $hex = $1; + $hex =~ s/^0+//; + if (length $hex > 8 && !$Config{use64bitint}) { + # Croak if nv_preserves_uv_bits < 64 ? + $new .= hex(substr($hex, -8)) + + 2**32 * hex(substr($hex, 0, -8)); + # The above will produce "errorneus" code + # if the hex constant was e.g. inside UINT64_C + # macro, but then again, h2ph is an approximation. + } else { + $new .= lc("0x$hex"); + } + next;}; + s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;}; s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;}; s/^("(\\"|[^"])*")// && do {$new .= $1; next;}; s/^'((\\"|[^"])*)'// && do { @@ -298,14 +457,20 @@ sub expr { }; # Eliminate typedefs /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do { + my $doit = 1; foreach (split /\s+/, $1) { # Make sure all the words are types, - last unless ($isatype{$_} or $_ eq 'struct'); + unless($isatype{$_} or $_ eq 'struct' or $_ eq 'union'){ + $doit = 0; + last; + } + } + if( $doit ){ + s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. } - s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. }; # struct/union member, including arrays: s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { - $id = $1; + my $id = $1; $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { @@ -321,8 +486,8 @@ sub expr { $new .= " (\$$id)"; }; s/^([_a-zA-Z]\w*)// && do { - $id = $1; - if ($id eq 'struct') { + my $id = $1; + if ($id eq 'struct' || $id eq 'union') { s/^\s+(\w+)//; $id .= ' ' . $1; $isatype{$id} = 1; @@ -335,8 +500,8 @@ sub expr { $new .= '->' if /^[\[\{]/; } elsif ($id eq 'defined') { $new .= 'defined'; - } elsif (/^\(/) { - s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat + } elsif (/^\s*\(/) { + s/^\s*\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat $new .= " &$id"; } elsif ($isatype{$id}) { if ($new =~ /{\s*$/) { @@ -363,6 +528,103 @@ sub expr { } +sub next_line +{ + my $file = shift; + my ($in, $out); + my $pre_sub_tri_graphs = 1; + + READ: while (not eof IN) { + $in .= ; + chomp $in; + next unless length $in; + + while (length $in) { + if ($pre_sub_tri_graphs) { + # Preprocess all tri-graphs + # including things stuck in quoted string constants. + $in =~ s/\?\?=/#/g; # | ??=| #| + $in =~ s/\?\?\!/|/g; # | ??!| || + $in =~ s/\?\?'/^/g; # | ??'| ^| + $in =~ s/\?\?\(/[/g; # | ??(| [| + $in =~ s/\?\?\)/]/g; # | ??)| ]| + $in =~ s/\?\?\-/~/g; # | ??-| ~| + $in =~ s/\?\?\//\\/g; # | ??/| \| + $in =~ s/\?\?/}/g; # | ??>| }| + } + if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) { + # Tru64 disassembler.h evilness: mixed C and Pascal. + while () { + last if /^\#endif/; + } + $in = ""; + next READ; + } + if ($in =~ /^extern inline / && # Inlined assembler. + $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) { + while () { + last if /^}/; + } + $in = ""; + next READ; + } + if ($in =~ s/\\$//) { # \-newline + $out .= ' '; + next READ; + } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough + $out .= $1; + } elsif ($in =~ s/^(\\.)//) { # \... + $out .= $1; + } elsif ($in =~ /^'/) { # '... + if ($in =~ s/^('(\\.|[^'\\])*')//) { + $out .= $1; + } else { + next READ; + } + } elsif ($in =~ /^"/) { # "... + if ($in =~ s/^("(\\.|[^"\\])*")//) { + $out .= $1; + } else { + next READ; + } + } elsif ($in =~ s/^\/\/.*//) { # //... + # fall through + } elsif ($in =~ m/^\/\*/) { # /*... + # C comment removal adapted from perlfaq6: + if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) { + $out .= ' '; + } else { # Incomplete /* */ + next READ; + } + } elsif ($in =~ s/^(\/)//) { # /... + $out .= $1; + } elsif ($in =~ s/^([^\'\"\\\/]+)//) { + $out .= $1; + } elsif ($^O eq 'linux' && + $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! && + $in =~ s!\'T KNOW!!) { + $out =~ s!I DON$!I_DO_NOT_KNOW!; + } else { + if ($opt_e) { + warn "Cannot parse $file:\n$in\n"; + $bad_file{$file} = 1; + $in = ''; + $out = undef; + last READ; + } else { + die "Cannot parse:\n$in\n"; + } + } + } + + last READ if $out =~ /\S/; + } + + return $out; +} + + # Handle recursive subdirectories without getting a grotesquely big stack. # Could this be implemented using File::Find? sub next_file @@ -380,7 +642,9 @@ sub next_file } else { print STDERR "Skipping directory `$file'\n"; } - } else { + } elsif ($opt_a) { + return $file; + } else { print STDERR "Skipping `$file': not a file or directory\n"; } } @@ -402,11 +666,8 @@ sub expand_glob # expand_glob() is going to be called until $ARGV[0] isn't a # directory; so push directories, and unshift everything else. - if (-d "$directory/$_") { - push @ARGV, "$directory/$_"; - } else { - unshift @ARGV, "$directory/$_"; - } + if (-d "$directory/$_") { push @ARGV, "$directory/$_" } + else { unshift @ARGV, "$directory/$_" } } closedir DIR; } @@ -431,12 +692,13 @@ sub link_if_possible unlink "$Dest_dir/$dirlink" or print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n"; } + if (eval 'symlink($target, "$Dest_dir/$dirlink")') { print "Linking $target -> $Dest_dir/$dirlink\n"; # Make sure that the link _links_ to something: if (! -e "$Dest_dir/$target") { - mkdir("$Dest_dir/$target", 0755) or + mkpath("$Dest_dir/$target", 0755) or print STDERR "Could not create $Dest_dir/$target/\n"; } } else { @@ -446,6 +708,122 @@ sub link_if_possible } +# Push all #included files in $file onto our stack, except for STDIN +# and files we've already processed. +sub queue_includes_from +{ + my ($file) = @_; + my $line; + + return if ($file eq "-"); + + open HEADER, $file or return; + while (defined($line =
)) { + while (/\\$/) { # Handle continuation lines + chop $line; + $line .=
; + } + + if ($line =~ /^#\s*include\s+<(.*?)>/) { + push(@ARGV, $1) unless $Is_converted{$1}; + } + } + close HEADER; +} + + +# Determine include directories; $Config{usrinc} should be enough for (all +# non-GCC?) C compilers, but gcc uses an additional include directory. +sub inc_dirs +{ + my $from_gcc = `LC_ALL=C $Config{cc} -v 2>&1`; + if( !( $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s ) ) + { # gcc-4+ : + $from_gcc = `LC_ALL=C $Config{cc} -print-search-dirs 2>&1`; + if ( !($from_gcc =~ s/^install:\s*([^\s]+[^\s\/])([\s\/]*).*$/$1\/include/s) ) + { + $from_gcc = ''; + }; + }; + length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc}); +} + + +# Create "_h2ph_pre.ph", if it doesn't exist or was built by a different +# version of h2ph. +sub build_preamble_if_necessary +{ + # Increment $VERSION every time this function is modified: + my $VERSION = 2; + my $preamble = "$Dest_dir/_h2ph_pre.ph"; + + # Can we skip building the preamble file? + if (-r $preamble) { + # Extract version number from first line of preamble: + open PREAMBLE, $preamble or die "Cannot open $preamble: $!"; + my $line = ; + $line =~ /(\b\d+\b)/; + close PREAMBLE or die "Cannot close $preamble: $!"; + + # Don't build preamble if a compatible preamble exists: + return if $1 == $VERSION; + } + + my (%define) = _extract_cc_defines(); + + open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!"; + print PREAMBLE "# This file was created by h2ph version $VERSION\n"; + + foreach (sort keys %define) { + if ($opt_D) { + print PREAMBLE "# $_=$define{$_}\n"; + } + if ($define{$_} =~ /^\((.*)\)$/) { + # parenthesized value: d=(v) + $define{$_} = $1; + } + if ($define{$_} =~ /^([+-]?(\d+)?\.\d+([eE][+-]?\d+)?)[FL]?$/) { + # float: + print PREAMBLE + "unless (defined &$_) { sub $_() { $1 } }\n\n"; + } elsif ($define{$_} =~ /^([+-]?\d+)U?L{0,2}$/i) { + # integer: + print PREAMBLE + "unless (defined &$_) { sub $_() { $1 } }\n\n"; + } elsif ($define{$_} =~ /^\w+$/) { + print PREAMBLE + "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n"; + } else { + print PREAMBLE + "unless (defined &$_) { sub $_() { \"", + quotemeta($define{$_}), "\" } }\n\n"; + } + } + close PREAMBLE or die "Cannot close $preamble: $!"; +} + + +# %Config contains information on macros that are pre-defined by the +# system's compiler. We need this information to make the .ph files +# function with perl as the .h files do with cc. +sub _extract_cc_defines +{ + my %define; + my $allsymbols = join " ", + @Config{'ccsymbols', 'cppsymbols', 'cppccsymbols'}; + + # Split compiler pre-definitions into `key=value' pairs: + while ($allsymbols =~ /([^\s]+)=((\\\s|[^\s])+)/g) { + $define{$1} = $2; + if ($opt_D) { + print STDERR "$_: $1 -> $2\n"; + } + } + + return %define; +} + + 1; ############################################################################## @@ -457,7 +835,7 @@ h2ph - convert .h C header files to .ph Perl header files =head1 SYNOPSIS -B +B =head1 DESCRIPTION @@ -470,6 +848,10 @@ It is most easily run while in /usr/include: or + cd /usr/include; h2ph * sys/* arpa/* netinet/* + +or + cd /usr/include; h2ph -r -l . The output files are placed in the hierarchy rooted at Perl's @@ -490,7 +872,15 @@ beneath the default Perl library location (C<$Config{'installsitsearch'}>). =item -r Run recursively; if any of B are directories, then run I -on all files in those directories (and their subdirectories, etc.). +on all files in those directories (and their subdirectories, etc.). B<-r> +and B<-a> are mutually exclusive. + +=item -a + +Run automagically; convert B, as well as any B<.h> files +which they include. This option will search for B<.h> files in all +directories which your C compiler ordinarily uses. B<-a> and B<-r> are +mutually exclusive. =item -l @@ -511,6 +901,15 @@ you will see the slightly more helpful However, the B<.ph> files almost double in size when built using B<-h>. +=item -D + +Include the code from the B<.h> file as a comment in the B<.ph> file. +This is primarily used for debugging I. + +=item -Q + +``Quiet'' mode; don't print out the names of the files being converted. + =back =head1 ENVIRONMENT @@ -547,6 +946,22 @@ that it can translate. It's only intended as a rough tool. You may need to dicker with the files produced. +You have to run this program by hand; it's not run as part of the Perl +installation. + +Doesn't handle complicated expressions built piecemeal, a la: + + enum { + FIRST_VALUE, + SECOND_VALUE, + #ifdef ABC + THIRD_VALUE + #endif + }; + +Doesn't necessarily locate all of your C compiler's internally-defined +symbols. + =cut !NO!SUBS! @@ -554,3 +969,4 @@ You may need to dicker with the files produced. close OUT or die "Can't close $file: $!"; chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; +chdir $origdir;