makefile.pl

source of perl for linux application,

	print "NOT found.\n";
    }

    print "Looking for getitimer()... ";
    my $has_getitimer;
    if (exists $Config{'d_getitimer'}) {
        $has_getitimer++ if $Config{'d_getitimer'};
    } elsif (has_x("getitimer(ITIMER_REAL, 0)")) {
        $has_getitimer++;
        $DEFINE .= ' -DHAS_GETITIMER';
    }

    if ($has_getitimer) {
        print "found.\n";
    } else {
	print "NOT found.\n";
    }

    if ($has_setitimer && $has_getitimer) {
	print "You have interval timers (both setitimer and getitimer).\n";
    } else {
	print "You do not have interval timers.\n";
    }

    print "Looking for ualarm()... ";
    my $has_ualarm;
    if (exists $Config{d_ualarm}) {
        $has_ualarm++ if $Config{d_ualarm};
    } elsif (has_x ("ualarm (0, 0)")) {
        $has_ualarm++;
	$DEFINE .= ' -DHAS_UALARM';
    }

    if ($has_ualarm) {
        print "found.\n";
    } else {
	print "NOT found.\n";
	if ($has_setitimer) {
	    print "But you have setitimer().\n";
	    print "We can make a Time::HiRes::ualarm().\n";
	}
    }

    print "Looking for usleep()... ";
    my $has_usleep;
    if (exists $Config{d_usleep}) {
	$has_usleep++ if $Config{d_usleep};
    } elsif (has_x ("usleep (0)")) {
	$has_usleep++;
	$DEFINE .= ' -DHAS_USLEEP';
    }

    if ($has_usleep) {
	print "found.\n";
    } else {
	print "NOT found.\n";
        print "Let's see if you have select()... ";
        if ($Config{'d_select'}) {
	    print "found.\n";
	    print "We can make a Time::HiRes::usleep().\n";
	} else {
	    print "NOT found.\n";
	    print "You won't have a Time::HiRes::usleep().\n";
	}
    }

    print "Looking for nanosleep()... ";
    my $has_nanosleep;
    if ($ENV{FORCE_NANOSLEEP_SCAN}) {
	print "forced scan... ";
	if (has_nanosleep()) {
	    $has_nanosleep++;
	    $DEFINE .= ' -DTIME_HIRES_NANOSLEEP';
	}
    }
    elsif (exists $Config{d_nanosleep}) {
	print "believing \$Config{d_nanosleep}... ";
	if ($Config{d_nanosleep}) {
	    $has_nanosleep++;
	    $DEFINE .= ' -DTIME_HIRES_NANOSLEEP';
	}
    } elsif ($^O =~ /^(mpeix)$/) {
	# MPE/iX falsely finds nanosleep from its libc equivalent.
	print "skipping because in $^O... ";
    } else {
	if (has_nanosleep()) {
	    $has_nanosleep++;
	    $DEFINE .= ' -DTIME_HIRES_NANOSLEEP';
	}
    }

    if ($has_nanosleep) {
	print "found.\n";
        print "You can mix subsecond sleeps with signals, if you want to.\n";
        print "(It's still not portable, though.)\n";
    } else {
	print "NOT found.\n";
	my $nt = ($^O eq 'os2' ? '' : 'not');
        print "You can$nt mix subsecond sleeps with signals.\n";
        print "(It would not be portable anyway.)\n";
    }

    print "Looking for clock_gettime()... ";
    my $has_clock_gettime;
    if (exists $Config{d_clock_gettime}) {
        $has_clock_gettime++ if $Config{d_clock_gettime}; # Unlikely...
    } elsif (has_clock_xxx('gettime')) {
        $has_clock_gettime++;
	$DEFINE .= ' -DTIME_HIRES_CLOCK_GETTIME';
    } elsif (defined $SYSCALL_H && has_clock_xxx_syscall('gettime')) {
        $has_clock_gettime++;
	$DEFINE .= ' -DTIME_HIRES_CLOCK_GETTIME -DTIME_HIRES_CLOCK_GETTIME_SYSCALL';
    }

    if ($has_clock_gettime) {
        if ($DEFINE =~ /-DTIME_HIRES_CLOCK_GETTIME_SYSCALL/) {
	    print "found (via syscall).\n";
	} else {
	    print "found.\n";
	}
    } else {
	print "NOT found.\n";
    }

    print "Looking for clock_getres()... ";
    my $has_clock_getres;
    if (exists $Config{d_clock_getres}) {
        $has_clock_getres++ if $Config{d_clock_getres}; # Unlikely...
    } elsif (has_clock_xxx('getres')) {
        $has_clock_getres++;
	$DEFINE .= ' -DTIME_HIRES_CLOCK_GETRES';
    } elsif (defined $SYSCALL_H && has_clock_xxx_syscall('getres')) {
        $has_clock_getres++;
	$DEFINE .= ' -DTIME_HIRES_CLOCK_GETRES -DTIME_HIRES_CLOCK_GETRES_SYSCALL';
    }

    if ($has_clock_getres) {
        if ($DEFINE =~ /-DTIME_HIRES_CLOCK_GETRES_SYSCALL/) {
	    print "found (via syscall).\n";
	} else {
	    print "found.\n";
	}
    } else {
	print "NOT found.\n";
    }

    print "Looking for clock_nanosleep()... ";
    my $has_clock_nanosleep;
    if (exists $Config{d_clock_nanosleep}) {
        $has_clock_nanosleep++ if $Config{d_clock_nanosleep}; # Unlikely...
    } elsif (has_clock_nanosleep()) {
        $has_clock_nanosleep++;
	$DEFINE .= ' -DTIME_HIRES_CLOCK_NANOSLEEP';
    }

    if ($has_clock_nanosleep) {
        print "found.\n";
    } else {
	print "NOT found.\n";
    }

    print "Looking for clock()... ";
    my $has_clock;
    if (exists $Config{d_clock}) {
        $has_clock++ if $Config{d_clock}; # Unlikely...
    } elsif (has_clock()) {
        $has_clock++;
	$DEFINE .= ' -DTIME_HIRES_CLOCK';
    }

    if ($has_clock) {
        print "found.\n";
    } else {
	print "NOT found.\n";
    }

    print "Looking for stat() subsecond timestamps...\n";

    print "Trying struct stat st_atimespec.tv_nsec...";
    my $has_stat_st_xtimespec;
    if (try_compile_and_link(<<EOM)) {
$TIME_HEADERS
#include <sys/stat.h>
int main(int argc, char** argv) {
    struct stat st;
    st.st_atimespec.tv_nsec = 0;
}
EOM
      $has_stat_st_xtimespec++;
      DEFINE('TIME_HIRES_STAT', 1);
    }

    if ($has_stat_st_xtimespec) {
        print "found.\n";
    } else {
	print "NOT found.\n";
    }

    print "Trying struct stat st_atimensec...";
    my $has_stat_st_xtimensec;
    if (try_compile_and_link(<<EOM)) {
$TIME_HEADERS
#include <sys/stat.h>
int main(int argc, char** argv) {
    struct stat st;
    st.st_atimensec = 0;
}
EOM
      $has_stat_st_xtimensec++;
      DEFINE('TIME_HIRES_STAT', 2);
    }

    if ($has_stat_st_xtimensec) {
        print "found.\n";
    } else {
	print "NOT found.\n";
    }

    print "Trying struct stat st_atime_n...";
    my $has_stat_st_xtime_n;
    if (try_compile_and_link(<<EOM)) {
$TIME_HEADERS
#include <sys/stat.h>
int main(int argc, char** argv) {
    struct stat st;
    st.st_atime_n = 0;
}
EOM
      $has_stat_st_xtime_n++;
      DEFINE('TIME_HIRES_STAT', 3);
    }

    if ($has_stat_st_xtime_n) {
        print "found.\n";
    } else {
	print "NOT found.\n";
    }

    print "Trying struct stat st_atim.tv_nsec...";
    my $has_stat_st_xtim;
    if (try_compile_and_link(<<EOM)) {
$TIME_HEADERS
#include <sys/stat.h>
int main(int argc, char** argv) {
    struct stat st;
    st.st_atim.tv_nsec = 0;
}
EOM
      $has_stat_st_xtim++;
      DEFINE('TIME_HIRES_STAT', 4);
    }

    if ($has_stat_st_xtim) {
        print "found.\n";
    } else {
	print "NOT found.\n";
    }

    print "Trying struct stat st_uatime...";
    my $has_stat_st_uxtime;
    if (try_compile_and_link(<<EOM)) {
$TIME_HEADERS
#include <sys/stat.h>
int main(int argc, char** argv) {
    struct stat st;
    st.st_uatime = 0;
}
EOM
      $has_stat_st_uxtime++;
      DEFINE('TIME_HIRES_STAT', 5);
    }

    if ($has_stat_st_uxtime) {
        print "found.\n";
    } else {
	print "NOT found.\n";
    }

   if ($DEFINE =~ /-DTIME_HIRES_STAT=\d+/) {
    print "You seem to have stat() subsecond timestamps.\n";
    print "(Your struct stat has them, but the filesystems must help.)\n";
   } else {
    print "You do not seem to have stat subsecond timestamps.\n";
   }

    my $has_w32api_windows_h;

    if ($^O eq 'cygwin') {
        print "Looking for <w32api/windows.h>... ";
        if (has_include('w32api/windows.h')) {
	    $has_w32api_windows_h++;
	    DEFINE('HAS_W32API_WINDOWS_H');
	}
        if ($has_w32api_windows_h) {
	    print "found.\n";
	} else {
	    print "NOT found.\n";
	}
    }

    if ($DEFINE) {
        $DEFINE =~ s/^\s+//;
        if (open(XDEFINE, ">xdefine")) {
	    print XDEFINE $DEFINE, "\n";
	    close(XDEFINE);
        }
    }
}

sub doMakefile {
    my @makefileopts = ();

    if ($] >= 5.005) {
	push (@makefileopts,
	    'AUTHOR'    => 'Jarkko Hietaniemi <[e-mail]>',
	    'ABSTRACT_FROM' => 'HiRes.pm',
	);
	DEFINE('ATLEASTFIVEOHOHFIVE');
    }

    push (@makefileopts,
	'NAME'	=> 'Time::HiRes',
	'VERSION_FROM' => 'HiRes.pm', # finds $VERSION
	'LIBS'	=> $LIBS,   # e.g., '-lm'
	'DEFINE'	=> $DEFINE,     # e.g., '-DHAS_SOMETHING'
	'XSOPT'	=> $XSOPT,
	  # Do not even think about 'INC' => '-I/usr/ucbinclude',
	  # Solaris will avenge.
	'INC'	=> '',     # e.g., '-I/usr/include/other'
	'INSTALLDIRS' => ($] >= 5.008 ? 'perl' : 'site'),
	'dist'      => {
	    'CI'       => 'ci -l',
	    'COMPRESS' => 'gzip -9f',
	    'SUFFIX'   => 'gz',
	},
        clean => { FILES => "xdefine" },
        realclean => { FILES=> 'const-c.inc const-xs.inc' },
    );

    if ($ENV{PERL_CORE}) {
	push @makefileopts, MAN3PODS => {};
    }

    WriteMakefile(@makefileopts);
}

sub doConstants {
    if (eval {require ExtUtils::Constant; 1}) {
	my @names = qw(CLOCK_HIGHRES CLOCK_MONOTONIC
		       CLOCK_PROCESS_CPUTIME_ID
		       CLOCK_REALTIME
		       CLOCK_SOFTTIME
		       CLOCK_THREAD_CPUTIME_ID
		       CLOCK_TIMEOFDAY
		       CLOCKS_PER_SEC
		       ITIMER_REAL ITIMER_VIRTUAL ITIMER_PROF
		       ITIMER_REALPROF
		       TIMER_ABSTIME);
	foreach (qw (d_usleep d_ualarm d_gettimeofday d_getitimer d_setitimer
		     d_nanosleep d_clock_gettime d_clock_getres
		     d_clock d_clock_nanosleep d_hires_stat)) {
	    my $macro = $_;
	    if ($macro =~ /^(d_nanosleep|d_clock_gettime|d_clock_getres|d_clock|d_clock_nanosleep)$/) {
		$macro =~ s/^d_(.+)/TIME_HIRES_\U$1/;
	    } elsif ($macro =~ /^(d_hires_stat)$/) {
		my $d_hires_stat = 0;
		$d_hires_stat = $1 if ($DEFINE =~ /-DTIME_HIRES_STAT=(\d+)/);
		push @names, {name => $_, macro => "TIME_HIRES_STAT", value => $d_hires_stat,
			      default => ["IV", "0"]};
		next;
	    } else {
		$macro =~ s/^d_(.+)/HAS_\U$1/;
	    }
	    push @names, {name => $_, macro => $macro, value => 1,
			  default => ["IV", "0"]};
	}
	ExtUtils::Constant::WriteConstants(
					   NAME => 'Time::HiRes',
					   NAMES => \@names,
					  );
    } else {
        my $file;
	foreach $file ('const-c.inc', 'const-xs.inc') {
	    my $fallback = File::Spec->catfile('fallback', $file);
	    local $/;
	    open IN, "<$fallback" or die "Can't open $fallback: $!";
	    open OUT, ">$file" or die "Can't open $file: $!";
	    print OUT <IN> or die $!;
	    close OUT or die "Can't close $file: $!";
	    close IN or die "Can't close $fallback: $!";
	}
    }
}

sub main {
    print "Configuring Time::HiRes...\n";
    if ($] == 5.007002) {
	die "Cannot Configure Time::HiRes for Perl $], aborting.\n";
    }

    if ($^O =~ /Win32/i) {
      DEFINE('SELECT_IS_BROKEN');
      $LIBS = [];
      print "System is $^O, skipping full configure...\n";
    } else {
      init();
    }
    doMakefile;
    doConstants;
    my $make = $Config{'make'} || "make";
    unless (exists $ENV{PERL_CORE} && $ENV{PERL_CORE}) {
	print  <<EOM;
Now you may issue '$make'.  Do not forget also '$make test'.
EOM
       if ((exists $ENV{LC_ALL}   && $ENV{LC_ALL}   =~ /utf-?8/i) ||
           (exists $ENV{LC_CTYPE} && $ENV{LC_CTYPE} =~ /utf-?8/i) ||
           (exists $ENV{LANG}     && $ENV{LANG}     =~ /utf-?8/i)) {
            print <<EOM;

NOTE: if you get an error like this (the Makefile line number may vary):
Makefile:91: *** missing separator
then set the environment variable LC_ALL to "C" and retry
from scratch (re-run perl "Makefile.PL").
(And consider upgrading your Perl.)
(You got this message because you seem to have
 an UTF-8 locale active in your shell environment, this used
 to cause broken Makefiles to be created from Makefile.PLs.)
EOM
        }
    }
}

&main;

# EOF