[perl5.git] / ext / Time / HiRes / Makefile.PL

require 5.002;

use Config;
use ExtUtils::MakeMaker;
use strict;

my $VERBOSE = $ENV{VERBOSE};
my $DEFINE;
my $LIBS = [];
my $XSOPT;

use vars qw($self); # Used in 'sourcing' the hints.

my $ld_exeext = ($^O eq 'cygwin' ||
                 $^O eq 'os2' && $Config{ldflags} =~ /-Zexe\b/) ? '.exe' : '';

unless($ENV{PERL_CORE}) {
    $ENV{PERL_CORE} = 1 if grep { $_ eq 'PERL_CORE=1' } @ARGV;
}

# Perls 5.002 and 5.003 did not have File::Spec, fake what we need.

sub my_dirsep {
    $^O eq 'VMS' ? '.' :
	$^O =~ /mswin32|netware|djgpp/i ? '\\' :
	    $^O eq 'MacOS' ? ':'
		: '/';
}

sub my_catdir {
    shift;
    my $catdir = join(my_dirsep, @_);
    $^O eq 'VMS' ? "[$catdir]" : $catdir;
}

sub my_catfile {
    shift;
    return join(my_dirsep, @_) unless $^O eq 'VMS';
    my $file = pop;
    return my_catdir (undef, @_) . $file;
}

sub my_updir {
    shift;
    $^O eq 'VMS' ? "-" : "..";
}

BEGIN {
    eval { require File::Spec };
    if ($@) {
	*File::Spec::catdir  = \&my_catdir;
	*File::Spec::updir   = \&my_updir;
	*File::Spec::catfile = \&my_catfile;
    }
}

# Avoid 'used only once' warnings.
my $nop1 = *File::Spec::catdir;
my $nop2 = *File::Spec::updir;
my $nop3 = *File::Spec::catfile;

# if you have 5.004_03 (and some slightly older versions?), xsubpp
# tries to generate line numbers in the C code generated from the .xs.
# unfortunately, it is a little buggy around #ifdef'd code.
# my choice is leave it in and have people with old perls complain
# about the "Usage" bug, or leave it out and be unable to compile myself
# without changing it, and then I'd always forget to change it before a
# release. Sorry, Edward :)

sub try_compile_and_link {
    my ($c, %args) = @_;

    my ($ok) = 0;
    my ($tmp) = "tmp$$";
    local(*TMPC);

    my $obj_ext = $Config{obj_ext} || ".o";
    unlink("$tmp.c", "$tmp$obj_ext");

    if (open(TMPC, ">$tmp.c")) {
	print TMPC $c;
	close(TMPC);

	my $cccmd = $args{cccmd};

	my $errornull;

	my $COREincdir;

	if ($ENV{PERL_CORE}) {
	    my $updir = File::Spec->updir;
	    $COREincdir = File::Spec->catdir(($updir) x 3);
	} else {
	    $COREincdir = File::Spec->catdir($Config{'archlibexp'}, 'CORE');
	}

	my $ccflags = $Config{'ccflags'} . ' ' . "-I$COREincdir";

	if ($^O eq 'VMS') {
	    if ($ENV{PERL_CORE}) {
		# Fragile if the extensions change hierarchy within
		# the Perl core but this should do for now.
                $cccmd = "$Config{'cc'} /include=([---]) $tmp.c";
	    } else {
		my $perl_core = $Config{'installarchlib'};
		$perl_core =~ s/\]$/.CORE]/;
                $cccmd = "$Config{'cc'} /include=(perl_root:[000000],$perl_core) $tmp.c";
	    }
        }

        if ($args{silent} || !$VERBOSE) {
	    $errornull = "2>/dev/null" unless defined $errornull;
	} else {
	    $errornull = '';
	}

        $cccmd = "$Config{'cc'} -o $tmp $ccflags $tmp.c @$LIBS $errornull"
	    unless defined $cccmd;

       if ($^O eq 'VMS') {
	    open( CMDFILE, ">$tmp.com" );
	    print CMDFILE "\$ SET MESSAGE/NOFACILITY/NOSEVERITY/NOIDENT/NOTEXT\n";
	    print CMDFILE "\$ $cccmd\n";
	    print CMDFILE "\$ IF \$SEVERITY .NE. 1 THEN EXIT 44\n"; # escalate
	    close CMDFILE;
	    system("\@ $tmp.com");
	    $ok = $?==0;
	    for ("$tmp.c", "$tmp$obj_ext", "$tmp.com", "$tmp$Config{exe_ext}") {
		1 while unlink $_;
	    }
        }
        else
        {
	    my $tmp_exe = "$tmp$ld_exeext";
	    printf "cccmd = $cccmd\n" if $VERBOSE;
	    my $res = system($cccmd);
	    $ok = defined($res) && $res==0 && -s $tmp_exe && -x _;

	    if ( $ok && exists $args{run} && $args{run}) {
		my $abs_tmp_exe =
		    File::Spec->
			catfile(File::Spec->rel2abs(File::Spec->curdir),
				$tmp_exe);
		printf "Running $abs_tmp_exe..." if $VERBOSE;
		if (system($abs_tmp_exe) == 0) {
		    $ok = $? == 0;
		} else {
		    print "system('$abs_tmp_exe') failed: $?\n";
		}
	    }
	    unlink("$tmp.c", $tmp_exe);
        }
    }

    return $ok;
}

sub has_gettimeofday {
    # confusing but true (if condition true ==> -DHAS_GETTIMEOFDAY already)
    return 0 if $Config{d_gettimeod} eq 'define';
    return 1 if try_compile_and_link(<<EOM);
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#ifdef I_SYS_TYPES
#   include <sys/types.h>
#endif

#ifdef I_SYS_TIME
#   include <sys/time.h>
#endif

#ifdef I_SYS_SELECT
#   include <sys/select.h>	/* struct timeval might be hidden in here */
#endif
static int foo()
{
    struct timeval tv;
    gettimeofday(&tv, 0);
}
int main _((int argc, char** argv, char** env))
{
    foo();
}
EOM
    return 0;
}

sub has_x {
    my ($x, %args) = @_;

    return 1 if
    try_compile_and_link(<<EOM, %args);
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#ifdef I_UNISTD
#   include <unistd.h>
#endif

#ifdef I_SYS_TYPES
#   include <sys/types.h>
#endif

#ifdef I_SYS_TIME
#   include <sys/time.h>
#endif

int main _((int argc, char** argv, char** env))
{
	$x;
}
EOM
    return 0;
}

sub has_nanosleep {
    return 1 if
    try_compile_and_link(<<EOM, run => 1);
#include <time.h>
#include <sys/time.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

/* int nanosleep(const struct timespec *rqtp, struct timespec *rmtp); */

int main() {
    struct timespec ts1, ts2;
    ts1.tv_sec  = 0;
    ts1.tv_nsec = 750000000;
    ts2.tv_sec  = 0;
    ts2.tv_nsec = 0;
    nanosleep(&ts1, &ts2); /* E.g. in AIX nanosleep() might return ENOSYS. */
    exit(errno);
}
EOM
}

sub has_include {
    my ($inc) = @_;
    return 1 if
    try_compile_and_link(<<EOM);
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include <$inc>
int main _((int argc, char** argv, char** env))
{
	return 0;
}
EOM
    return 0;
}

sub init {
    my $hints = File::Spec->catfile("hints", "$^O.pl");
    if (-f $hints) {
	print "Using hints $hints...\n";
	local $self;
	do $hints;
	if (exists $self->{LIBS}) {
	    $LIBS = $self->{LIBS};
	    print "Extra libraries: @$LIBS...\n";
	}
    }

    $DEFINE = '';

    print "Looking for gettimeofday()... ";
    my $has_gettimeofday;
    if (exists $Config{d_gettimeod}) {
	$has_gettimeofday++ if $Config{d_gettimeod};
    } elsif (has_gettimeofday()) {
	$DEFINE .= ' -DHAS_GETTIMEOFDAY';
	$has_gettimeofday++;
    }

    if ($has_gettimeofday) {
	print "found.\n";
    } else {
	die <<EOD
Your operating system does not seem to have the gettimeofday() function.
(or, at least, I cannot find it)

There is no way Time::HiRes is going to work.

I am awfully sorry but I cannot go further.

Aborting configuration.

EOD
    }

    print "Looking for setitimer()... ";
    my $has_setitimer;
    if (exists $Config{d_setitimer}) {
        $has_setitimer++ if $Config{d_setitimer};
    } elsif (has_x("setitimer(ITIMER_REAL, 0, 0)")) {
        $has_setitimer++;
        $DEFINE .= ' -DHAS_SETITIMER';
    }

    if ($has_setitimer) {
        print "found.\n";
    } else {
	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'} eq 'define') {
	    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 (exists $Config{d_nanosleep}) {
	if ($Config{d_nanosleep}) {
	    $has_nanosleep++;
	    $DEFINE .= ' -DTIME_HIRES_NANOSLEEP';
	}
    } elsif ($^O ne 'mpeix' && # MPE/iX falsely finds nanosleep.
             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";
    }

    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++;
	    $DEFINE .= ' -DHAS_W32API_WINDOWS_H';
	}
        if ($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 <jhi@iki.fi>',
	    'ABSTRACT_FROM' => 'HiRes.pm',
	);
	$DEFINE .= " -DATLEASTFIVEOHOHFIVE";
    }

    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' => 'perl',
	'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(ITIMER_REAL ITIMER_VIRTUAL ITIMER_PROF
			ITIMER_REALPROF));
	foreach (qw (d_usleep d_ualarm d_gettimeofday d_getitimer d_setitimer
		     d_nanosleep)) {
	    my $macro = $_;
	    if ($macro eq 'd_nanosleep') {
		$macro =~ s/d_(.*)/TIME_HIRES_\U$1/;
	    } 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 = '-DSELECT_IS_BROKEN';
      $LIBS = [];
    } 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 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").
EOM
        }
    }
}

&main;

# EOF
Commit	Line	Data
3f2ee006 HS	1	require 5.002;
	2
	3	use Config;
dcf686c9	4	use ExtUtils::MakeMaker;
98b50af3	5	use strict;
3f2ee006 HS	6
3f2ee006 HS	7	my $VERBOSE = $ENV{VERBOSE};
98b50af3	8	my $DEFINE;
046e3f33	9	my $LIBS = [];
98b50af3 JH	10	my $XSOPT;
98b50af3 JH	11
046e3f33 JH	12	use vars qw($self); # Used in 'sourcing' the hints.
046e3f33 JH	13
4ed0e2d4 RGS	14	my $ld_exeext = ($^O eq 'cygwin' \|\|
4ed0e2d4 RGS	15	$^O eq 'os2' && $Config{ldflags} =~ /-Zexe\b/) ? '.exe' : '';
622913ab	16
12724655 IZ	17	unless($ENV{PERL_CORE}) {
12724655 IZ	18	$ENV{PERL_CORE} = 1 if grep { $_ eq 'PERL_CORE=1' } @ARGV;
98b50af3 JH	19	}
	20
	21	# Perls 5.002 and 5.003 did not have File::Spec, fake what we need.
3f2ee006 HS	22
	23	sub my_dirsep {
	24	$^O eq 'VMS' ? '.' :
	25	$^O =~ /mswin32\|netware\|djgpp/i ? '\\' :
	26	$^O eq 'MacOS' ? ':'
	27	: '/';
	28	}
	29
	30	sub my_catdir {
	31	shift;
	32	my $catdir = join(my_dirsep, @_);
98b50af3 JH	33	$^O eq 'VMS' ? "[$catdir]" : $catdir;
	34	}
	35
	36	sub my_catfile {
	37	shift;
	38	return join(my_dirsep, @_) unless $^O eq 'VMS';
	39	my $file = pop;
	40	return my_catdir (undef, @_) . $file;
3f2ee006 HS	41	}
	42
	43	sub my_updir {
	44	shift;
	45	$^O eq 'VMS' ? "-" : "..";
	46	}
	47
	48	BEGIN {
	49	eval { require File::Spec };
	50	if ($@) {
25ca0970 JH	51	*File::Spec::catdir = \&my_catdir;
25ca0970 JH	52	*File::Spec::updir = \&my_updir;
98b50af3	53	*File::Spec::catfile = \&my_catfile;
3f2ee006 HS	54	}
	55	}
	56
98b50af3 JH	57	# Avoid 'used only once' warnings.
	58	my $nop1 = *File::Spec::catdir;
	59	my $nop2 = *File::Spec::updir;
	60	my $nop3 = *File::Spec::catfile;
	61
3f2ee006 HS	62	# if you have 5.004_03 (and some slightly older versions?), xsubpp
	63	# tries to generate line numbers in the C code generated from the .xs.
	64	# unfortunately, it is a little buggy around #ifdef'd code.
5d899d7e	65	# my choice is leave it in and have people with old perls complain
3f2ee006	66	# about the "Usage" bug, or leave it out and be unable to compile myself
5d899d7e	67	# without changing it, and then I'd always forget to change it before a
3f2ee006 HS	68	# release. Sorry, Edward :)
3f2ee006 HS	69
3f2ee006 HS	70	sub try_compile_and_link {
	71	my ($c, %args) = @_;
	72
	73	my ($ok) = 0;
2359510d	74	my ($tmp) = "tmp$$";
3f2ee006 HS	75	local(*TMPC);
	76
	77	my $obj_ext = $Config{obj_ext} \|\| ".o";
	78	unlink("$tmp.c", "$tmp$obj_ext");
	79
	80	if (open(TMPC, ">$tmp.c")) {
	81	print TMPC $c;
	82	close(TMPC);
	83
98b50af3	84	my $cccmd = $args{cccmd};
3f2ee006 HS	85
	86	my $errornull;
	87
	88	my $COREincdir;
98b50af3	89
3f2ee006 HS	90	if ($ENV{PERL_CORE}) {
	91	my $updir = File::Spec->updir;
	92	$COREincdir = File::Spec->catdir(($updir) x 3);
	93	} else {
	94	$COREincdir = File::Spec->catdir($Config{'archlibexp'}, 'CORE');
	95	}
98b50af3	96
3f2ee006	97	my $ccflags = $Config{'ccflags'} . ' ' . "-I$COREincdir";
98b50af3	98
3f2ee006 HS	99	if ($^O eq 'VMS') {
3f2ee006 HS	100	if ($ENV{PERL_CORE}) {
3d036c2b	101	# Fragile if the extensions change hierarchy within
6a20eacc HS	102	# the Perl core but this should do for now.
6a20eacc HS	103	$cccmd = "$Config{'cc'} /include=([---]) $tmp.c";
3f2ee006 HS	104	} else {
	105	my $perl_core = $Config{'installarchlib'};
	106	$perl_core =~ s/\]$/.CORE]/;
98b50af3	107	$cccmd = "$Config{'cc'} /include=(perl_root:[000000],$perl_core) $tmp.c";
3f2ee006 HS	108	}
	109	}
	110
	111	if ($args{silent} \|\| !$VERBOSE) {
	112	$errornull = "2>/dev/null" unless defined $errornull;
	113	} else {
	114	$errornull = '';
	115	}
	116
98b50af3	117	$cccmd = "$Config{'cc'} -o $tmp $ccflags $tmp.c @$LIBS $errornull"
3f2ee006	118	unless defined $cccmd;
98b50af3	119
c1363767	120	if ($^O eq 'VMS') {
3f2ee006 HS	121	open( CMDFILE, ">$tmp.com" );
	122	print CMDFILE "\$ SET MESSAGE/NOFACILITY/NOSEVERITY/NOIDENT/NOTEXT\n";
	123	print CMDFILE "\$ $cccmd\n";
98b50af3	124	print CMDFILE "\$ IF \$SEVERITY .NE. 1 THEN EXIT 44\n"; # escalate
3f2ee006 HS	125	close CMDFILE;
	126	system("\@ $tmp.com");
	127	$ok = $?==0;
5d899d7e	128	for ("$tmp.c", "$tmp$obj_ext", "$tmp.com", "$tmp$Config{exe_ext}") {
98b50af3	129	1 while unlink $_;
3f2ee006 HS	130	}
	131	}
	132	else
	133	{
622913ab	134	my $tmp_exe = "$tmp$ld_exeext";
3f2ee006	135	printf "cccmd = $cccmd\n" if $VERBOSE;
622913ab IZ	136	my $res = system($cccmd);
622913ab IZ	137	$ok = defined($res) && $res==0 && -s $tmp_exe && -x _;
26e22fd9 RGS	138
	139	if ( $ok && exists $args{run} && $args{run}) {
	140	my $abs_tmp_exe =
	141	File::Spec->
	142	catfile(File::Spec->rel2abs(File::Spec->curdir),
	143	$tmp_exe);
	144	printf "Running $abs_tmp_exe..." if $VERBOSE;
	145	if (system($abs_tmp_exe) == 0) {
	146	$ok = $? == 0;
	147	} else {
	148	print "system('$abs_tmp_exe') failed: $?\n";
	149	}
	150	}
622913ab	151	unlink("$tmp.c", $tmp_exe);
3f2ee006 HS	152	}
3f2ee006 HS	153	}
5d899d7e	154
26e22fd9	155	return $ok;
3f2ee006 HS	156	}
	157
	158	sub has_gettimeofday {
	159	# confusing but true (if condition true ==> -DHAS_GETTIMEOFDAY already)
5d899d7e	160	return 0 if $Config{d_gettimeod} eq 'define';
98b50af3	161	return 1 if try_compile_and_link(<<EOM);
5d899d7e JH	162	#include "EXTERN.h"
	163	#include "perl.h"
	164	#include "XSUB.h"
	165	#ifdef I_SYS_TYPES
3f2ee006 HS	166	# include <sys/types.h>
	167	#endif
	168
	169	#ifdef I_SYS_TIME
	170	# include <sys/time.h>
	171	#endif
	172
	173	#ifdef I_SYS_SELECT
	174	# include <sys/select.h> /* struct timeval might be hidden in here */
	175	#endif
	176	static int foo()
	177	{
	178	struct timeval tv;
	179	gettimeofday(&tv, 0);
	180	}
	181	int main _((int argc, char argv, char env))
	182	{
	183	foo();
	184	}
	185	EOM
	186	return 0;
	187	}
	188
	189	sub has_x {
98b50af3	190	my ($x, %args) = @_;
3f2ee006 HS	191
	192	return 1 if
	193	try_compile_and_link(<<EOM, %args);
	194	#include "EXTERN.h"
	195	#include "perl.h"
	196	#include "XSUB.h"
	197
	198	#ifdef I_UNISTD
	199	# include <unistd.h>
	200	#endif
	201
	202	#ifdef I_SYS_TYPES
	203	# include <sys/types.h>
	204	#endif
	205
	206	#ifdef I_SYS_TIME
	207	# include <sys/time.h>
	208	#endif
	209
	210	int main _((int argc, char argv, char env))
	211	{
	212	$x;
	213	}
	214	EOM
	215	return 0;
	216	}
	217
26e22fd9 RGS	218	sub has_nanosleep {
	219	return 1 if
	220	try_compile_and_link(<<EOM, run => 1);
	221	#include <time.h>
	222	#include <sys/time.h>
	223	#include <stdio.h>
	224	#include <stdlib.h>
	225	#include <errno.h>
	226
	227	/* int nanosleep(const struct timespec rqtp, struct timespec rmtp); */
	228
	229	int main() {
	230	struct timespec ts1, ts2;
	231	ts1.tv_sec = 0;
	232	ts1.tv_nsec = 750000000;
	233	ts2.tv_sec = 0;
	234	ts2.tv_nsec = 0;
	235	nanosleep(&ts1, &ts2); /* E.g. in AIX nanosleep() might return ENOSYS. */
	236	exit(errno);
	237	}
	238	EOM
	239	}
	240
4ed0e2d4 RGS	241	sub has_include {
	242	my ($inc) = @_;
	243	return 1 if
	244	try_compile_and_link(<<EOM);
	245	#include "EXTERN.h"
	246	#include "perl.h"
	247	#include "XSUB.h"
	248
	249	#include <$inc>
	250	int main _((int argc, char argv, char env))
	251	{
	252	return 0;
	253	}
	254	EOM
	255	return 0;
	256	}
	257
046e3f33 JH	258	sub init {
	259	my $hints = File::Spec->catfile("hints", "$^O.pl");
	260	if (-f $hints) {
	261	print "Using hints $hints...\n";
	262	local $self;
	263	do $hints;
	264	if (exists $self->{LIBS}) {
	265	$LIBS = $self->{LIBS};
	266	print "Extra libraries: @$LIBS...\n";
3f2ee006 HS	267	}
3f2ee006 HS	268	}
046e3f33 JH	269
046e3f33 JH	270	$DEFINE = '';
3f2ee006	271
98b50af3	272	print "Looking for gettimeofday()... ";
3f2ee006	273	my $has_gettimeofday;
5d899d7e JH	274	if (exists $Config{d_gettimeod}) {
5d899d7e JH	275	$has_gettimeofday++ if $Config{d_gettimeod};
3f2ee006 HS	276	} elsif (has_gettimeofday()) {
	277	$DEFINE .= ' -DHAS_GETTIMEOFDAY';
	278	$has_gettimeofday++;
	279	}
	280
	281	if ($has_gettimeofday) {
98b50af3	282	print "found.\n";
3f2ee006 HS	283	} else {
	284	die <<EOD
	285	Your operating system does not seem to have the gettimeofday() function.
	286	(or, at least, I cannot find it)
	287
	288	There is no way Time::HiRes is going to work.
	289
	290	I am awfully sorry but I cannot go further.
	291
	292	Aborting configuration.
	293
	294	EOD
	295	}
	296
98b50af3	297	print "Looking for setitimer()... ";
3f2ee006	298	my $has_setitimer;
5d899d7e JH	299	if (exists $Config{d_setitimer}) {
5d899d7e JH	300	$has_setitimer++ if $Config{d_setitimer};
3f2ee006 HS	301	} elsif (has_x("setitimer(ITIMER_REAL, 0, 0)")) {
	302	$has_setitimer++;
	303	$DEFINE .= ' -DHAS_SETITIMER';
	304	}
	305
	306	if ($has_setitimer) {
98b50af3	307	print "found.\n";
3f2ee006	308	} else {
98b50af3	309	print "NOT found.\n";
3f2ee006 HS	310	}
3f2ee006 HS	311
98b50af3	312	print "Looking for getitimer()... ";
3f2ee006	313	my $has_getitimer;
5d899d7e JH	314	if (exists $Config{'d_getitimer'}) {
5d899d7e JH	315	$has_getitimer++ if $Config{'d_getitimer'};
3f2ee006 HS	316	} elsif (has_x("getitimer(ITIMER_REAL, 0)")) {
	317	$has_getitimer++;
	318	$DEFINE .= ' -DHAS_GETITIMER';
	319	}
	320
	321	if ($has_getitimer) {
98b50af3	322	print "found.\n";
3f2ee006	323	} else {
98b50af3	324	print "NOT found.\n";
3f2ee006 HS	325	}
	326
	327	if ($has_setitimer && $has_getitimer) {
4ed0e2d4	328	print "You have interval timers (both setitimer and getitimer).\n";
3f2ee006	329	} else {
98b50af3	330	print "You do not have interval timers.\n";
3f2ee006 HS	331	}
3f2ee006 HS	332
98b50af3 JH	333	print "Looking for ualarm()... ";
98b50af3 JH	334	my $has_ualarm;
5d899d7e JH	335	if (exists $Config{d_ualarm}) {
5d899d7e JH	336	$has_ualarm++ if $Config{d_ualarm};
3f2ee006 HS	337	} elsif (has_x ("ualarm (0, 0)")) {
	338	$has_ualarm++;
	339	$DEFINE .= ' -DHAS_UALARM';
	340	}
	341
	342	if ($has_ualarm) {
98b50af3	343	print "found.\n";
3f2ee006	344	} else {
98b50af3 JH	345	print "NOT found.\n";
	346	if ($has_setitimer) {
	347	print "But you have setitimer().\n";
	348	print "We can make a Time::HiRes::ualarm().\n";
3f2ee006 HS	349	}
	350	}
	351
98b50af3	352	print "Looking for usleep()... ";
3f2ee006	353	my $has_usleep;
5d899d7e JH	354	if (exists $Config{d_usleep}) {
5d899d7e JH	355	$has_usleep++ if $Config{d_usleep};
3f2ee006 HS	356	} elsif (has_x ("usleep (0)")) {
	357	$has_usleep++;
	358	$DEFINE .= ' -DHAS_USLEEP';
	359	}
	360
	361	if ($has_usleep) {
98b50af3	362	print "found.\n";
3f2ee006	363	} else {
98b50af3 JH	364	print "NOT found.\n";
98b50af3 JH	365	print "Let's see if you have select()... ";
3f2ee006	366	if ($Config{'d_select'} eq 'define') {
98b50af3 JH	367	print "found.\n";
98b50af3 JH	368	print "We can make a Time::HiRes::usleep().\n";
3f2ee006	369	} else {
98b50af3 JH	370	print "NOT found.\n";
98b50af3 JH	371	print "You won't have a Time::HiRes::usleep().\n";
3f2ee006 HS	372	}
	373	}
	374
98b50af3	375	print "Looking for nanosleep()... ";
3f2ee006	376	my $has_nanosleep;
5d899d7e	377	if (exists $Config{d_nanosleep}) {
c1363767 JH	378	if ($Config{d_nanosleep}) {
	379	$has_nanosleep++;
	380	$DEFINE .= ' -DTIME_HIRES_NANOSLEEP';
	381	}
c077e422	382	} elsif ($^O ne 'mpeix' && # MPE/iX falsely finds nanosleep.
26e22fd9	383	has_nanosleep()) {
3f2ee006	384	$has_nanosleep++;
046e3f33	385	$DEFINE .= ' -DTIME_HIRES_NANOSLEEP';
3f2ee006 HS	386	}
	387
	388	if ($has_nanosleep) {
98b50af3	389	print "found.\n";
4ed0e2d4 RGS	390	print "You can mix subsecond sleeps with signals, if you want to.\n";
4ed0e2d4 RGS	391	print "(It's still not portable, though.)\n";
3f2ee006	392	} else {
98b50af3	393	print "NOT found.\n";
622913ab IZ	394	my $nt = ($^O eq 'os2' ? '' : 'not');
622913ab IZ	395	print "You can$nt mix subsecond sleeps with signals.\n";
4ed0e2d4 RGS	396	print "(It would not be portable anyway.)\n";
	397	}
	398
	399	my $has_w32api_windows_h;
	400	if ($^O eq 'cygwin') {
	401	print "Looking for <w32api/windows.h>... ";
	402	if (has_include('w32api/windows.h')) {
	403	$has_w32api_windows_h++;
	404	$DEFINE .= ' -DHAS_W32API_WINDOWS_H';
	405	}
	406	if ($has_w32api_windows_h) {
	407	print "found.\n";
	408	} else {
	409	print "NOT found.\n";
	410	}
3f2ee006 HS	411	}
	412
	413	if ($DEFINE) {
	414	$DEFINE =~ s/^\s+//;
	415	if (open(XDEFINE, ">xdefine")) {
	416	print XDEFINE $DEFINE, "\n";
	417	close(XDEFINE);
	418	}
	419	}
	420	}
	421
	422	sub doMakefile {
98b50af3	423	my @makefileopts = ();
3f2ee006 HS	424
	425	if ($] >= 5.005) {
	426	push (@makefileopts,
	427	'AUTHOR' => 'Jarkko Hietaniemi <jhi@iki.fi>',
	428	'ABSTRACT_FROM' => 'HiRes.pm',
	429	);
	430	$DEFINE .= " -DATLEASTFIVEOHOHFIVE";
	431	}
	432
	433	push (@makefileopts,
	434	'NAME' => 'Time::HiRes',
	435	'VERSION_FROM' => 'HiRes.pm', # finds $VERSION
5d899d7e JH	436	'LIBS' => $LIBS, # e.g., '-lm'
5d899d7e JH	437	'DEFINE' => $DEFINE, # e.g., '-DHAS_SOMETHING'
3f2ee006 HS	438	'XSOPT' => $XSOPT,
3f2ee006 HS	439	# do not even think about 'INC' => '-I/usr/ucbinclude', Solaris will avenge.
5d899d7e	440	'INC' => '', # e.g., '-I/usr/include/other'
3f2ee006 HS	441	'INSTALLDIRS' => 'perl',
	442	'dist' => {
	443	'CI' => 'ci -l',
5d899d7e	444	'COMPRESS' => 'gzip -9f',
3f2ee006 HS	445	'SUFFIX' => 'gz',
	446	},
	447	clean => { FILES => "xdefine" },
1caec985	448	realclean => { FILES=> 'const-c.inc const-xs.inc' },
3f2ee006 HS	449	);
3f2ee006 HS	450
9ac5eb64 JH	451	if ($ENV{PERL_CORE}) {
	452	push @makefileopts, MAN3PODS => {};
	453	}
	454
3f2ee006 HS	455	WriteMakefile(@makefileopts);
	456	}
	457
98b50af3 JH	458	sub doConstants {
	459	if (eval {require ExtUtils::Constant; 1}) {
	460	my @names = (qw(ITIMER_REAL ITIMER_VIRTUAL ITIMER_PROF
	461	ITIMER_REALPROF));
	462	foreach (qw (d_usleep d_ualarm d_gettimeofday d_getitimer d_setitimer
	463	d_nanosleep)) {
	464	my $macro = $_;
672f6857 JH	465	if ($macro eq 'd_nanosleep') {
	466	$macro =~ s/d_(.*)/TIME_HIRES_\U$1/;
	467	} else {
	468	$macro =~ s/d_(.*)/HAS_\U$1/;
	469	}
98b50af3 JH	470	push @names, {name => $_, macro => $macro, value => 1,
	471	default => ["IV", "0"]};
	472	}
	473	ExtUtils::Constant::WriteConstants(
	474	NAME => 'Time::HiRes',
	475	NAMES => \@names,
	476	);
	477	} else {
1fbb4de4 RGS	478	my $file;
1fbb4de4 RGS	479	foreach $file ('const-c.inc', 'const-xs.inc') {
98b50af3 JH	480	my $fallback = File::Spec->catfile('fallback', $file);
	481	local $/;
	482	open IN, "<$fallback" or die "Can't open $fallback: $!";
	483	open OUT, ">$file" or die "Can't open $file: $!";
	484	print OUT <IN> or die $!;
	485	close OUT or die "Can't close $file: $!";
	486	close IN or die "Can't close $fallback: $!";
	487	}
	488	}
	489	}
3f2ee006	490
98b50af3 JH	491	sub main {
98b50af3 JH	492	print "Configuring Time::HiRes...\n";
1fbb4de4 RGS	493	if ($] == 5.007002) {
	494	die "Cannot Configure Time::HiRes for Perl $], aborting.\n";
	495	}
3f2ee006 HS	496
	497	if ($^O =~ /Win32/i) {
	498	$DEFINE = '-DSELECT_IS_BROKEN';
046e3f33	499	$LIBS = [];
3f2ee006	500	} else {
046e3f33	501	init();
3f2ee006	502	}
3f2ee006	503	doMakefile;
98b50af3	504	doConstants;
3f2ee006	505	my $make = $Config{'make'} \|\| "make";
1fbb4de4	506	unless (exists $ENV{PERL_CORE} && $ENV{PERL_CORE}) {
3f2ee006	507	print <<EOM;
3f2ee006	508	Now you may issue '$make'. Do not forget also '$make test'.
dfffa540	509	EOM
1fbb4de4 RGS	510	if ((exists $ENV{LC_ALL} && $ENV{LC_ALL} =~ /utf-?8/i) \|\|
	511	(exists $ENV{LC_CTYPE} && $ENV{LC_CTYPE} =~ /utf-?8/i) \|\|
	512	(exists $ENV{LANG} && $ENV{LANG} =~ /utf-?8/i)) {
dfffa540 JH	513	print <<EOM;
dfffa540 JH	514	NOTE: if you get an error like this (the line number may vary):
d7358e6a	515	Makefile:91: *** missing separator
1caec985 DM	516	then set the environment variable LC_ALL to "C" and retry
1caec985 DM	517	from scratch (re-run perl "Makefile.PL").
3f2ee006	518	EOM
dfffa540	519	}
3f2ee006 HS	520	}
	521	}
	522
	523	&main;
dcf686c9	524
3f2ee006	525	# EOF