File: configure

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eboard 1.1.1-6.1
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#!/usr/bin/perl

use IO::Handle;

my $prefix      = "/usr/local";
my $package     = "eboard";
my $version     = "1.1.1";
my $cxx         = "g++";
my @cxxflags    = map { split } join(" ",$ENV{CXXFLAGS}," ",$ENV{CPPFLAGS});
my @ldflags     = map { split } join(" -lpthread "," -ldl ",$ENV{LDFLAGS});
my @libs        = ();
my $configh     = "config.h";
my $configmake  = "config.make";
my $nls         = 1;
my $dataprefix  = '';
my $manprefix   = '';
#my $dgt         = 1;

# ------------

sub usage;
sub run_cmd;
sub cplusplus_lang;
sub install_util;
sub header_check;
#sub link_check;
sub header_def;
sub macro_check;
sub spaces;
sub version_cmp;
sub get_prog;
sub cppdef;
sub cppundef;
sub append_inc;
sub append_ld;
sub append_libs;
sub append_flags;
sub log_file;

# ------------

sub usage {
    print "configure options:\n";
    print "\t--prefix=path        install to given prefix instead of /usr/local\n";
    print "\t--enable-debug       compile with gdb debugging info\n";
    print "\t--disable-nls        disable translation support\n";
#    print "\t--disable-dgt        disable DGT board support\n";
    print "\t--compiler=prog      use alternative compiler (default: g++)\n";
    print "\t--extra-inc=list     additional include file search paths, separated by :\n";
    print "\t--extra-ld=list      additional library search paths, separated by :\n";
    print "\t--extra-libs=list    additional libraries separated by :\n";
    print "\t--extra-flags=list   additional compiler flags separated by :\n";
    print "\t--data-prefix=path   place data in path/eboard [default=prefix/share/eboard]\n";
    print "\t--man-prefix=path    place man pages under path [default=prefix/man]\n";
    print "\t--help               show this usage help.\n\n";
    exit 2;
    # hidden options: --enable-profile
}

sub log_file {
    my ($name) = @_;

    open(LOG,">>config.log");
    print LOG "-- begin $name --\n";
    if (open(INP,$name)) {
	while($ll = <INP>) {
	    print LOG $ll;
	}
	close(INP);
    }
    print LOG "-- end $name --\n";
    close(LOG);
}

sub run_cmd {
    my @cmd;
    my $pid, $r;

    @cmd = @_;

    $pid = fork;
    if ($pid == 0) {
        close(STDOUT);
        close(STDERR);
        open(STDOUT,">>config.log");
        open(STDERR,">>config.log");
	print STDOUT "cmd = @cmd\n";
	print STDOUT "output:\n";
        exec @cmd;
    } else {
	if ($pid > 0) {
	    $pid = waitpid($pid, 0);
	    $r = $? / 256;
	    open(LOG,">>config.log");
	    print LOG "return value = $r\n";
	    close(LOG);
	    return $r;
	}
	open(LOG,">>config.log");
	print LOG "cmd = @cmd, fork failed\n";
	close(LOG);
	return -1;
    }
}

sub cplusplus_lang {
    my @compilers = ( $cxx, 'g++', 'c++' );
    my $x;
    my $program = <<EOF;
#include <list>
#include <vector>
#include <iostream>
using namespace std;

int main(int argc, char **argv) {
    vector<int> v;
    list<char> l;

    v.push_back(1);
    v.push_back(7);
    l.push_back(0x30);
    l.push_front(0x31);

    vector<int>::iterator vi;
    list<char>::iterator li;

    for(vi=v.begin();vi!=v.end();vi++)
	cout << (*vi);
    for(li=l.begin();li!=l.end();li++)
	cout << (*li);
    cout << endl;
    return 0;
}
EOF

    print "testing C++ compiler...\n";

    if (!open(TESTCC,">test.cc")) {
	print "cannot write test program.\n";
	return 0;	
    }
    print TESTCC "$program";
    close TESTCC;

    $cxx = 'no';
    for (@compilers) {
	$x = $_;
	print "  trying $x ... ";

	unlink('test.o','yytest');
	log_file("test.cc");

	if (run_cmd($x, '-c', 'test.cc', '-o', 'test.o') != 0) {
	  print "compilation FAILED\n";
	  next;
	}

	if (run_cmd($x, 'test.o', '-o', 'yytest') != 0) {
	  print "compilation ok, linking FAILED\n";
	  next;
	}

	$y = `./yytest`;
	if ($y ne "1710\n") {
	  print "compilation ok, linking ok, output FAILED\n";
	  next;
	}
	
	$cxx = $x;
	print "it works\n";
	last;
    }
    unlink('test.o','yytest','test.cc');

    if ($cxx eq 'no') {
	print "FAIL\n";
	return 0;
    }

    return 1;
}

sub install_util {
    
    print "checking sanity of install... ";
    if (run_cmd("sh", "-c", "echo something > xxtest") != 0) {
	print "FAIL\n";
	return 0;
    }
    if (run_cmd("install -m 0644 xxtest ./yytest") != 0) {
	print "FAIL\n";
	unlink("xxtest","yytest");
	return 0;
    }
    if (run_cmd("diff xxtest yytest") != 0) {
	print "FAIL\n";
	unlink("xxtest","yytest");
	return 0;
    }
    unlink("xxtest","yytest");
    print "ok\n";
    return 1;
}

sub append_inc {
    my $x = shift @_;
    my @y;

    @y = split(/:/, $x);
    for (@y) {
	push @cxxflags, "-I$_";
    }
}

sub append_ld {
    my $x = shift @_;
    my @y;

    @y = split(/:/, $x);
    for (@y) {
	push @ldflags, "-L$_";
    }
}

sub append_libs {
    my $x = shift @_;
    my @y;

    @y = split(/:/, $x);
    for (@y) {
	push @libs, "-l$_";
    }
}

sub append_flags {
    my $x = shift @_;
    my @y;

    @y = split(/:/, $x);
    for (@y) {
	push @cxxflags, "$_";
    }
}

sub header_def {
    my $x = shift @_;
    $x =~ s/\//_/g;
    $x =~ s/\./_/g;
    $x =~ tr/a-z/A-Z/;
    $x = "HAVE_$x";
    return $x;
}

sub spaces {
    my $i, $x = "";
    for($i=$_[0];$i>0;$i--) {
	$x = $x.' ';
    }
    return $x;
}

# @_ = ( header macro confighname )
sub macro_check {
    my $hdr = shift @_;
    my $mac = shift @_;
    my $chn = shift @_;
    my $program = "#include <$hdr>\n#if !defined($mac)\n#error not there\n#endif\n";

    print "checking for $mac in $hdr... ";
    if (!open(TESTCC,">test.cc")) {
	print "cannot write test program, FAIL\n";
	return 0;
    }
    print TESTCC "$program";
    close TESTCC;
    log_file("test.cc");

    if (run_cmd($cxx,@cxxflags,"-c","test.cc","-o","xxtest.o") != 0) {
	print "no\n";
	print CONFIGH "#undef $chn\n";
	unlink("test.cc","xxtest.o");
	return 0;
    } else {
	print "yes\n";
	print CONFIGH "#define $chn 1\n";
	unlink("test.cc","xxtest.o");
	return 1;
    }
}

sub cppdef {
    my $macro = shift @_;
    print CONFIGH "#define $macro 1\n";
}

sub cppundef {
    my $macro = shift @_;
    print CONFIGH "#undef $macro\n";
}

#sub link_check {
#  my ($lib,$func,$inc) = @_;
#  my $result;

#  print "library verification: $func in $lib: ";

#  if (!open(TESTCC,">test.cc")) {
#    print "cannot write test program, FAIL\n";
#    return 0;
#  }
#  print TESTCC "$inc\n";
#  print TESTCC "int main(int argc, char **argv) {\n";
#  print TESTCC "$func;\n}\n\n";
#  close TESTCC;
#  if (run_cmd($cxx,@cxxflags,@ldflags,"test.cc","-o","xxtest","-ldgtnix","-lpthread") == 0) {
#    print "ok\n";
#    $result = 1;
#  } else {
#    print "FAIL\n";
#    $result = 0;
#  }
#  unlink("test.cc","xxtest");
#  return $result;
#}

sub header_check {
    my $x,$y,$fail=0,$z,$bsdbug;

    print "header verification:\n";

    for(@_) {
	$x = $_;
	if ($x =~ /BSDBUG(.+)/) {
	    $z = $1;
	    $bsdbug=1;
	} else {
	    $z = $x;
	    $bsdbug=0;
	}
	print "  $z";
	$y = spaces(20 - length($z));
	print "$y";
	if ($bsdbug != 0) {
	    $program = "#include <stdio.h>\n#include <stdlib.h>\n#include <string.h>\n#include <unistd.h>\n#include <$z>\nint main() { return 0; }\n";
	} else {
	    $program = "#include <$z>\nint main() { return 0; }\n";
        }
	if (!open(TESTCC,">test.cc")) {
	    print "cannot write test program, FAIL\n";
	    return 0;
	}
	print TESTCC "$program";
	close TESTCC;
	
	log_file("test.cc");

	if (run_cmd($cxx,@cxxflags,"-c","test.cc","-o","xxtest.o") != 0) {
	    print ": no\n";
	    $y = header_def($x);
	    print CONFIGH "#undef $y\n";
	    ++$fail;
	} else {
	    $y = header_def($x);
	    print CONFIGH "#define $y 1\n";
	    print "\r";
	    $y = spaces(40);
	    print "$y\r";
	}
	unlink("test.cc","xxtest.o");
    }
    
    if ($fail == 0) {
	print "  all headers found.\n";
	return 1;
    }
    return 0;
}

# ver, minver, maxver
sub version_cmp {
    my $ver = shift @_;
    my $minver = shift @_;
    my $maxver = shift @_;
    my @av, @minav, @maxav;

    @av    = split(/\./,$ver);
    @minav = split(/\./,$minver);
    @maxav = split(/\./,$maxver);

    return 0 if ($av[0]<$minav[0] || $av[0]>$maxav[0]);
    return 0 if ($av[0]==$minav[0] && $av[1]<$minav[1]);
    return 0 if ($av[0]==$maxav[0] && $av[1]>$maxav[1]);
    return 0 if ($av[0]==$minav[0] && $av[1]==$minav[1] && $av[2]<$minav[2]);
    return 0 if ($av[0]==$maxav[0] && $av[1]==$maxav[1] && $av[2]>$maxav[2]);
    return 1;
}

# name
sub get_prog {
    my $file = shift @_;
    my $path = $ENV{PATH};
    my @path, $x;

    @path = split(/:/,$path);
    for(@path) {
	$x = "$_/$file";
	next unless -x $x && -f $x && -e $x;
	return $x;
    }
    return '';
}

# -------------

STDOUT->autoflush();
print "configuring eboard $version...\n";
unlink("config.log");

# parse command-line options
for (@ARGV) {
    if (/--prefix=(.*)/) {
	$prefix = $1;
	next;
    }
    if ($_ eq '--enable-debug') {
	push @cxxflags, "-ggdb";
	next;
    }
    if ($_ eq '--enable-profile') {
	push @cxxflags, "-pg";
	push @ldflags, "-pg";
	next;
    }
    if ($_ eq '--disable-nls') {
	$nls = 0;
	next;
    }
#    if ($_ eq '--disable-dgt') {
#	$dgt = 0;
#	next;
#    }
    if (/--compiler=(.*)/) {
	$cxx = $1;
	next;
    }
    if (/--extra-libs=(.*)/) {
        append_libs($1);
	next;
    }
    if (/--data-prefix=(.*)/) {
        $dataprefix = $1;
	next;
    }
    if (/--man-prefix=(.*)/) {
        $manprefix = $1;
	next;
    }
    if (/--extra-flags=(.*)/) {
        append_flags($1);
	next;
    }
    if (/--extra-inc=(.*)/) {
	append_inc($1);
	next;
    }
    if (/--extra-ld=(.*)/) {
	append_ld($1);
	next;
    }
    if ($_ eq '-h' || $_ eq '--help') {
	usage();
	exit 1;
    }
    print "** ignoring unknown parameter $_\n";
}

if (!open(CONFIGH,">$configh")) {
    print "** cannot open $configh for writing, GIVING UP.\n";
    exit 2;
}

print CONFIGH "#ifndef CONFIG_H\n#define CONFIG_H 1\n\n";

if (!open(CONFIGMAKE,">$configmake")) {
    print "**cannot open $configmake for writing, GIVING UP.\n";
    exit 2;
}

if (!install_util()) {
    print "** install is not working properly.\n";
    exit 2;
}

if (!cplusplus_lang()) {
    print "** no suitable C++ compiler found.\n";
    exit 2;
}

# required headers
if (!header_check("stdio.h","stdlib.h","string.h","unistd.h",
		  "time.h","stdarg.h","ctype.h","errno.h",
		  "fcntl.h","dirent.h","sys/stat.h",
		  "sys/types.h","sys/wait.h","signal.h",
		  "math.h","sys/time.h","sys/ioctl.h",
		  "BSDBUGsys/socket.h", "BSDBUGnetdb.h", "BSDBUGnetinet/in.h",
		  "BSDBUGarpa/inet.h", "iostream",
		  "deque","list","vector","stack","string")) {
    print "** at least one required header is missing.\n";
    exit 2;
}

#optional headers
header_check("strings.h","sys/soundcard.h","sys/audioio.h","linux/joystick.h");

$t1=macro_check("netinet/in.h","IPPROTO_TCP","HAVE_IPPROTO_TCP_ON_IN_H");
$t2=macro_check("netinet/in.h","TCP_NODELAY","HAVE_TCP_NODELAY_ON_IN_H");
$t3=macro_check("netinet/in.h","SOL_TCP","HAVE_SOL_TCP_ON_IN_H");

$t4=macro_check("netinet/tcp.h","IPPROTO_TCP","HAVE_IPPROTO_TCP_ON_TCP_H");
$t5=macro_check("netinet/tcp.h","TCP_NODELAY","HAVE_TCP_NODELAY_ON_TCP_H");
$t6=macro_check("netinet/tcp.h","SOL_TCP","HAVE_SOL_TCP_ON_TCP_H");

print "  net options: ";

if ($t2 != 0) {
    cppdef("USE_SOCK_OPTS");
    if ($t1!=0 && $t3!=0) {
	cppundef("NEED_TCP_H");
	cppdef("USE_SOCK_OPTS");
    }
    if ($t1!=0) {
	cppdef("USE_IPPROTO_TCP");
	print "netinet/tcp.h not required, IPPROTO_TCP present.\n";
    } else {
	cppdef("USE_SOL_TCP");
	print "netinet/tcp.h not required, SOL_TCP present.\n";
    }
} else {
    if ($t5 != 0 && ($t1!=0 || $t4!=0) && ($t3!=0 || $t6!=0) ) {
	cppdef("NEED_TCP_H");
	cppdef("USE_SOCK_OPTS");
	if ($t1!=0 || $t4!=0) {
	    cppdef("USE_IPPROTO_TCP");
	    print "netinet/tcp.h required, IPPROTO_TCP present.\n";
	} else {
	    cppdef("USE_SOL_TCP");
	    print "netinet/tcp.h required, SOL_TCP present.\n";
	}
    } else {
	cppundef("USE_SOCK_OPTS");
	print "TCP macros not found, eboard will not use setsockopt\n";
    }
}

# gtk 2.x

print "looking for pkg-config... ";
$pkgconfig = get_prog("pkg-config");

if ($pkgconfig eq '') {
    print "NOT FOUND\n";
    print "** You need pkg-config for your libraries to be found.\n";
    exit 2;
}

print "$pkgconfig\n";
print "looking for GTK+ version... ";
$gtkversion = `$pkgconfig --modversion gtk+-2.0`;
chomp($gtkversion);

$gtkversion = "NOT FOUND" if ($gtkversion eq "");

if (version_cmp($gtkversion,"2.0.0","2.99.9")!=0) {
    print "$gtkversion, ok\n";
} else {
    print "$gtkversion, WILL NOT DO (must be >= 2.0.0 and < 2.99.9)\n";
    print "** The currently installed GTK+ version cannot be used to\n";
    print "** compile eboard, it is recommended you get the latest one.\n";
    print "** GTK+'s site: http://www.gtk.org\n";
    exit 2;
}

@libpng_names = ('libpng','libpng12','libpng13');
$pngmodule = '';

print "looking for libpng... ";

for $x (@libpng_names) {
  $pngversion = `$pkgconfig --modversion $x`;
  chomp($pngversion);

  if (version_cmp($pngversion, "1.2.0", "7000.0.0")!=0) {
    print "$pngversion, ok\n";
    $pngmodule = $x;
    last;
  } else {
    next;
  }
}

if ($pngmodule eq '') {
    print "libpng >= 1.2.0 not found.\n";
    exit 2;
}

$x = `$pkgconfig --cflags gtk+-2.0 $pngmodule`;
chomp($x);
@x = split(/ /,$x);
for(@x) {
    push @cxxflags, $_;
}

$x = `$pkgconfig --libs gtk+-2.0 $pngmodule`;
chomp($x);
@x = split(/ /,$x);
for(@x) {
    push @ldflags, $_;
}
push @ldflags, @libs;

if (!header_check("gtk/gtk.h","gdk/gdkkeysyms.h"))
{
    print "** The compiler did not find GTK/GDK headers,\n";
    print "** unable to proceed.\n";
    exit 2;
}

# dgtnix library

#if ($dgt!=0) {
#  $dgt=0 if (!header_check("dgtnix.h"));
#  $dgt=0 if (!link_check("dgtnix","dgtnixQueryDriverVersion()","#include <dgtnix.h>"));

#  if ($dgt==0) {
#    print "** dgtnix not found, eboard will be compiled without DGT board support.\n";
#    print CONFIGH "#undef WITH_DGT_BOARD\n";
#  } else {
 #    push @ldflags, "-ldgtnix";
 #   push @ldflags, "-lpthread";
 #   print CONFIGH "#define WITH_DGT_BOARD 1\n";
 # }
#}


# end

if ($dataprefix eq '') {
  $dataprefix = "$prefix/share";
}

if ($manprefix eq '') {
  $manprefix = "$prefix/man";
}

print CONFIGH "#define DATADIR \"$dataprefix\"\n";
print CONFIGH "#define EBOARD_PREFIX \"$prefix\"\n";
print CONFIGH "#define VERSION \"$version\"\n";

if ($nls == 0) {
    print CONFIGH "#undef ENABLE_NLS\n";
} else {
    print CONFIGH "#define ENABLE_NLS 1\n";
}

print CONFIGH "\n#endif\n";
close CONFIGH;
print "wrote $configh\n";

print CONFIGMAKE "CXX       = $cxx\n";
print CONFIGMAKE "CXXFLAGS  = @cxxflags\n";
print CONFIGMAKE "LDFLAGS   = @ldflags\n";

print CONFIGMAKE "prefix    = \${DESTDIR}$prefix\n";
print CONFIGMAKE "bindir    = \${DESTDIR}$prefix/bin\n";
print CONFIGMAKE "mandir    = \${DESTDIR}$manprefix\n";
print CONFIGMAKE "datadir   = \${DESTDIR}$dataprefix/$package\n";
print CONFIGMAKE "version   = $version\n";

close CONFIGMAKE;
print "wrote $configmake\n";

print "writing Makefile... ";
if (run_cmd("sh","-c","cat $configmake elifekam > Makefile") != 0) {
    print "error (?!?)\n";
    exit 2;
}
print "ok\n";

print "creating eboard-config... ";

if (!open(ECIN,"<eboard-config.in")) {
    print "FAILED, eboard-config.in not found.\n";
    exit 2;
}

if (!open(ECOUT,">eboard-config")) {
    print "FAILED, cannot create eboard-config.\n";
    exit 2;
}

while($_=<ECIN>) {
    chomp;
    if (/^\#HERE/) {
	print ECOUT "prefix=$prefix\n";
	print ECOUT "bindir=$prefix/bin\n";
	print ECOUT "datadir=$dataprefix\n";
	print ECOUT "package=$package\n";
	print ECOUT "version=$version\n";
    } else {
	print ECOUT "$_\n";
    }
}

close(ECIN);
close(ECOUT);
print "ok\n";

print "creating eboard.spec... ";

if (!open(ESIN,"<eboard.spec.in")) {
    print "FAILED, eboard.spec.in not found.\n";
    exit 2;
}

if (!open(ESOUT,">eboard.spec")) {
    print "FAILED, cannot create eboard.spec.\n";
    exit 2;
}

while($_=<ESIN>) {
    chomp;
    s/THEVERSION/$version/g;
    print ESOUT "$_\n";
}

close(ESIN);
close(ESOUT);
print "ok\n";

print "\nSummary:\n\n";
print "$package version $version\n";
print "binaries  will be installed to    $prefix/bin\n";
print "man pages will be installed under $manprefix\n";
print "datafiles will be installed to    $dataprefix/$package\n";
#print "DGT board support: ";
#if ($dgt==0) { print "no\n"; } else { print "yes\n"; }
print "NLS support: ";
if ($nls==0) { print "no\n"; } else { print "yes\n"; }

print "\ndone.\n";