/usr/bin/gvhdl is in freehdl 0.0.8-2.2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# -*- perl -*-
use Socket;
use strict;
my $cc = "x86_64-linux-gnu-g++";
my $libtool = "libtool";
my $libtool_options = "--mode=link --tag CXX";
my $vhdl_source_name = "";
my $source = "";
my $includes = "";
my $cpplibs = "-lm FREEHDL/lib/libfreehdl-kernel.la FREEHDL/lib/libfreehdl-std.la";
my $vhdl_library = ""; # Library the design entity is compiled into
my $cpp_options = "";
my $vhdl_options = "";
my $no_cpp_compile = 0;
my $verbose = 0;
my $use_sockets = 0;
my $vhdl_libdir = "FREEHDL/share/freehdl/lib";
my $freehdl_root_path= "";
# set root path of the FreeHDL system
sub set_freehdl_root_path {
if (not -f "/usr/bin/freehdl-v2cc") {
$freehdl_root_path = $ENV{'FREEHDL'};
if ($freehdl_root_path ne "") { return; }
} else {
$freehdl_root_path = "/usr"; return;
}
# if environment variable is not set then test
# each parent directory
my $path = "/usr/share/freehdl/lib";
while (1) {
# test whether $path is a valid path
if (not -d "$path/") { die "Could not find FreeHDL root path! Please set environment FREEHDL."; }
# is there a file named v2cc.libs in the directory?
if (not -f "$path/v2cc.libs") { $path = $path . "/.."; next; }
# open file and analyze content
open INFILE, "$path/v2cc.libs" or die "Could not read $path/v2cc.libs\n";
my $text = "";
while (<INFILE>) {
s/\n//g;
$text = $text . " " . $_;
}
my $found = 1;
if ($text !~ /std\s*:\s*std/i) { $found = 0; }
if ($text !~ /ieee\s*:\s*ieee/i) { $found = 0; }
close(INFILE);
# return result if freehdl root path was found
if ($found == 1) {
$freehdl_root_path = $path;
return;
}
# try next path
$path = $path . "/..";
}
};
sub update {
$_ = $_[0];
s/FREEHDL/$freehdl_root_path/g;
return $_;
}
sub execute_cmd {
my $cmd = $_[0];
my $label_text = $_[1];
my $out_file = $_[2];
open(COMMAND, "$cmd 2>&1 |");
while (<COMMAND>) {
print $out_file, "$label_text$_";
}
return close(COMMAND)? 0 : 256;
}
# The main program
sub main {
# determine root path of freehdl installation
set_freehdl_root_path;
print "gvhdl: FreeHDL root path is '$freehdl_root_path'.\n";
$includes = "-I $freehdl_root_path/include";
my $MSTREAM;
my $ESTREAM;
my $PROGRESS_BAR;
open(MSTREAM, ">&STDOUT");
open(ESTREAM, ">&STDERR");
open(PROGRESS_BAR, ">/dev/null");
$cpplibs = update($cpplibs);
$libtool = update($libtool);
$vhdl_libdir = update($vhdl_libdir);
my $arg_index = 0;
my $do_link = 1;
my $create_simulator = 1;
my @source_files;
my $object_files;
while ($arg_index < scalar(@ARGV)) {
my $argument = $ARGV[$arg_index];
if ($argument =~ /^\-l/) {
die "gvhdl: Missing argument for '-l'!\n" if (++$arg_index >= scalar(@ARGV));
$vhdl_library = "-l " . $ARGV[$arg_index];
} elsif ($argument =~ /^\-C/) {
$cc = $ARGV[++$arg_index];
} elsif ($argument =~ /^\-FHDLgui/) {
# gvhdl will communiate with is caller via 2 sockets. The socket
# file names are generated from the base string passed over as a
# argument to option FHDLgui. The actual file names are derived
# by appending channel number 0 or 4 to the base name. Channel 0
# is used for printing messages generated during code
# generation/compilation/linking while channel 4 is used to
# print progress information.
my $socket_base_name = $ARGV[++$arg_index];
my $socket_name = $socket_base_name . "0";
socket(MSTREAM, PF_UNIX, SOCK_STREAM, 0) || die "socket: $!";
connect(MSTREAM, sockaddr_un($socket_name)) || die "connect: $!";
$ESTREAM = $MSTREAM;
my $socket_name = $socket_base_name . "4";
socket(PROGRESS_BAR, PF_UNIX, SOCK_STREAM, 0) || die "socket: $!";
connect(PROGRESS_BAR, sockaddr_un($socket_name)) || die "connect: $!";
$use_sockets = 1;
} elsif ($argument =~ /^\-L/) {
$vhdl_libdir .= " -L " . $ARGV[++$arg_index];
} elsif ($argument =~ /^\-R/) {
$vhdl_options = $vhdl_options . " -R";
} elsif ($argument =~ /^\-g/) {
$vhdl_options = $vhdl_options . " -g";
$cpp_options = $cpp_options . " -g";
} elsif ($argument =~ /^\-c/) {
$do_link = 0;
$create_simulator = 0;
$cpp_options = $cpp_options . " -c";
} elsif ($argument =~ /^\-G/) {
$cpp_options = $cpp_options . " -g";
} elsif ($argument =~ /^\-v/) {
$verbose = 1;
} elsif ($argument =~ /^\-V/) {
$vhdl_options = $vhdl_options . " -v";
} elsif ($argument =~ /^\-D/) {
$vhdl_options = $vhdl_options . " -D";
} elsif ($argument =~ /^\--relaxed-component-visibility/) {
$vhdl_options = $vhdl_options . " --relaxed-component-visibility";
} elsif ($argument =~ /^\--libieee/) {
$cpplibs .= " " . update ("FREEHDL/lib/freehdl/libieee.la");
} elsif ($argument =~ /^\-/) {
$cpp_options = $cpp_options . " " . $argument;
} else {
push @source_files, $argument;
}
++$arg_index;
}
my $steps = scalar(@source_files);
if ($no_cpp_compile == 0) { $steps *= 2; }
if ($do_link == 1) { $steps += 1; }
$steps = int(99 / $steps);
my $progress_value = 0;
##############################################################
# Create name for main file
##############################################################
my $main_file_name;
my $main_vhdl_file;
if ($create_simulator == 1) {
$_ = $source_files [0];
if ($_ =~ /\.vhdl$/) { $main_vhdl_file = $_; }
s/\.[^\.]*$/\._main_/i;
$main_file_name = $_;
}
##############################################################
# process each source file
##############################################################
foreach $vhdl_source_name (@source_files) {
# skip object (*.o) files
if ($vhdl_source_name =~ /\.o$/) {
$object_files = $object_files . " " . $vhdl_source_name;
next;
}
# skip object (*.a) files
if ($vhdl_source_name =~ /\.a$/) {
$object_files = $object_files . " " . $vhdl_source_name;
next;
}
##############################################################
# Comiling vhdl -> cc
##############################################################
$_ = $vhdl_source_name;
s/\.[^\.]*$/\.cc/i;
my $out_file_name = $_;
my $cmd;
if ($create_simulator == 1 &&
$main_vhdl_file == $vhdl_source_name) {
$cmd = "$freehdl_root_path/bin/freehdl-v2cc -m $main_file_name.cc -L $vhdl_libdir $vhdl_library $vhdl_options -o $out_file_name $vhdl_source_name";
} else {
$cmd = "$freehdl_root_path/bin/freehdl-v2cc -L $vhdl_libdir $vhdl_library $vhdl_options -o $out_file_name $vhdl_source_name";
}
print MSTREAM "gvhdl: executing '$cmd'\n";
if (execute_cmd ($cmd, "", $MSTREAM)/256 != 0) {
print ESTREAM "gvhdl: Compilation failed!\n";
print PROGRESS_BAR "99";
die;
}
$progress_value = int($progress_value + $steps);
print PROGRESS_BAR $progress_value;
##############################################################
# Comiling cc -> o
##############################################################
$_ = $out_file_name;
s/\.[^\.]*$/\.o/i;
$object_files .= " " . $_;
if ($no_cpp_compile == 0) {
my $cmd = "$cc $cpp_options $includes -c $out_file_name";
print MSTREAM "gvhdl:\n";
print MSTREAM "gvhdl: ================================\n";
print MSTREAM "gvhdl: Compiling '$out_file_name'...\n";
print MSTREAM "gvhdl: ================================\n";
print MSTREAM "gvhdl: $cmd\n";
if (execute_cmd ($cmd, "c++: ", $MSTREAM)/256 != 0) {
print ESTREAM "gvhdl: Compilation failed!\n";
print PROGRESS_BAR "99";
die;
}
$progress_value = int($progress_value + $steps);
print PROGRESS_BAR $progress_value;
}
}
##############################################################
# Comiling main cc file -> o
##############################################################
if ($create_simulator == 1) {
my $out_file_name = $main_file_name . ".cc";
my $cmd = "$cc $cpp_options $includes -c $out_file_name";
print MSTREAM "gvhdl:\n";
print MSTREAM "gvhdl: ================================\n";
print MSTREAM "gvhdl: Compiling simulator main file '$out_file_name'...\n";
print MSTREAM "gvhdl: ================================\n";
print MSTREAM "gvhdl: $cmd\n";
if (execute_cmd ($cmd, "c++: ", $MSTREAM)/256 != 0) {
print ESTREAM "gvhdl: Compilation failed!\n";
print PROGRESS_BAR "99";
die;
}
$progress_value = int($progress_value + $steps);
print PROGRESS_BAR $progress_value;
}
##############################################################
# link
##############################################################
if ($do_link == 1) {
$_ = $source_files[0];
s/\.[^\.]*$//i;
my $target_name = $_;
my $cmd = "$libtool $libtool_options $cc $cpp_options $main_file_name.o $object_files $cpplibs -o $target_name";
print MSTREAM "gvhdl: Linking simulator '$target_name'...\n";
print MSTREAM "gvhdl: $cmd\n";
if (execute_cmd ($cmd, "linker: ", $MSTREAM)/256 != 0) {
print ESTREAM "gvhdl: Linking failed!\n";
die;
}
print MSTREAM "gvhdl: ================================\n";
print MSTREAM "gvhdl: Simulator '$target_name' created.\n";
print MSTREAM "gvhdl: ================================\n";
print PROGRESS_BAR "99";
rmdir ".libs";
}
}
&main;
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