[p5sagit/p5-mst-13.2.git] / ext / Time / HiRes / Makefile.PL

#!/usr/bin/perl
#
# In general we trust %Config, but for nanosleep() this trust
# may be misplaces (it may be linkable but not really functional).
# Use $ENV{FORCE_NANOSLEEP_SCAN} to force rescanning whether there
# really is hope.

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 $tmp_exe =
		    File::Spec->catfile(File::Spec->curdir, $tmp_exe);
		printf "Running $tmp_exe..." if $VERBOSE;
		if (system($tmp_exe) == 0) {
		    $ok = 1;
		} else {
		    $ok = 0;
		    print "[ system('$tmp_exe') failed: status $? ] ";
		}
	    }
	    unlink("$tmp.c", $tmp_exe);
        }
    }

    return $ok;
}

sub has_gettimeofday {
    # confusing but true (if condition true ==> -DHAS_GETTIMEOFDAY already)
    return 0 if $Config{d_gettimeod};
    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 {
    print "Trying out 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;
    int ret;
    ts1.tv_sec  = 0;
    ts1.tv_nsec = 750000000;
    ts2.tv_sec  = 0;
    ts2.tv_nsec = 0;
    errno = 0;
    ret = nanosleep(&ts1, &ts2); /* E.g. in AIX nanosleep() fail and set errno to ENOSYS. */
    ret == 0 ? exit(0) : exit(errno ? errno : -1);
}
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'}) {
	    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 $Config{d_nanosleep} && !$ENV{FORCE_NANOSLEEP_SCAN}) {
        # Believe $Config{d_nanosleep}.
	if ($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
56c1b3bd	1	#!/usr/bin/perl
	2	#
	3	# In general we trust %Config, but for nanosleep() this trust
	4	# may be misplaces (it may be linkable but not really functional).
	5	# Use $ENV{FORCE_NANOSLEEP_SCAN} to force rescanning whether there
	6	# really is hope.
	7
3f2ee006	8	require 5.002;
	9
	10	use Config;
dcf686c9	11	use ExtUtils::MakeMaker;
98b50af3	12	use strict;
3f2ee006	13
3f2ee006	14	my $VERBOSE = $ENV{VERBOSE};
98b50af3	15	my $DEFINE;
046e3f33	16	my $LIBS = [];
56c1b3bd	17	my $XSOPT = '';
98b50af3	18
046e3f33	19	use vars qw($self); # Used in 'sourcing' the hints.
046e3f33	20
4ed0e2d4	21	my $ld_exeext = ($^O eq 'cygwin' \|\|
4ed0e2d4	22	$^O eq 'os2' && $Config{ldflags} =~ /-Zexe\b/) ? '.exe' : '';
622913ab	23
12724655	24	unless($ENV{PERL_CORE}) {
12724655	25	$ENV{PERL_CORE} = 1 if grep { $_ eq 'PERL_CORE=1' } @ARGV;
98b50af3	26	}
	27
	28	# Perls 5.002 and 5.003 did not have File::Spec, fake what we need.
3f2ee006	29
	30	sub my_dirsep {
	31	$^O eq 'VMS' ? '.' :
	32	$^O =~ /mswin32\|netware\|djgpp/i ? '\\' :
	33	$^O eq 'MacOS' ? ':'
	34	: '/';
	35	}
	36
	37	sub my_catdir {
	38	shift;
	39	my $catdir = join(my_dirsep, @_);
98b50af3	40	$^O eq 'VMS' ? "[$catdir]" : $catdir;
	41	}
	42
	43	sub my_catfile {
	44	shift;
	45	return join(my_dirsep, @_) unless $^O eq 'VMS';
	46	my $file = pop;
	47	return my_catdir (undef, @_) . $file;
3f2ee006	48	}
	49
	50	sub my_updir {
	51	shift;
	52	$^O eq 'VMS' ? "-" : "..";
	53	}
	54
	55	BEGIN {
	56	eval { require File::Spec };
	57	if ($@) {
25ca0970	58	*File::Spec::catdir = \&my_catdir;
25ca0970	59	*File::Spec::updir = \&my_updir;
98b50af3	60	*File::Spec::catfile = \&my_catfile;
3f2ee006	61	}
	62	}
	63
98b50af3	64	# Avoid 'used only once' warnings.
	65	my $nop1 = *File::Spec::catdir;
	66	my $nop2 = *File::Spec::updir;
	67	my $nop3 = *File::Spec::catfile;
	68
3f2ee006	69	# if you have 5.004_03 (and some slightly older versions?), xsubpp
	70	# tries to generate line numbers in the C code generated from the .xs.
	71	# unfortunately, it is a little buggy around #ifdef'd code.
5d899d7e	72	# my choice is leave it in and have people with old perls complain
3f2ee006	73	# about the "Usage" bug, or leave it out and be unable to compile myself
5d899d7e	74	# without changing it, and then I'd always forget to change it before a
3f2ee006	75	# release. Sorry, Edward :)
3f2ee006	76
3f2ee006	77	sub try_compile_and_link {
	78	my ($c, %args) = @_;
	79
	80	my ($ok) = 0;
2359510d	81	my ($tmp) = "tmp$$";
3f2ee006	82	local(*TMPC);
	83
	84	my $obj_ext = $Config{obj_ext} \|\| ".o";
	85	unlink("$tmp.c", "$tmp$obj_ext");
	86
	87	if (open(TMPC, ">$tmp.c")) {
	88	print TMPC $c;
	89	close(TMPC);
	90
98b50af3	91	my $cccmd = $args{cccmd};
3f2ee006	92
	93	my $errornull;
	94
	95	my $COREincdir;
98b50af3	96
3f2ee006	97	if ($ENV{PERL_CORE}) {
	98	my $updir = File::Spec->updir;
	99	$COREincdir = File::Spec->catdir(($updir) x 3);
	100	} else {
	101	$COREincdir = File::Spec->catdir($Config{'archlibexp'}, 'CORE');
	102	}
98b50af3	103
3f2ee006	104	my $ccflags = $Config{'ccflags'} . ' ' . "-I$COREincdir";
98b50af3	105
3f2ee006	106	if ($^O eq 'VMS') {
3f2ee006	107	if ($ENV{PERL_CORE}) {
3d036c2b	108	# Fragile if the extensions change hierarchy within
6a20eacc	109	# the Perl core but this should do for now.
6a20eacc	110	$cccmd = "$Config{'cc'} /include=([---]) $tmp.c";
3f2ee006	111	} else {
	112	my $perl_core = $Config{'installarchlib'};
	113	$perl_core =~ s/\]$/.CORE]/;
98b50af3	114	$cccmd = "$Config{'cc'} /include=(perl_root:[000000],$perl_core) $tmp.c";
3f2ee006	115	}
	116	}
	117
	118	if ($args{silent} \|\| !$VERBOSE) {
	119	$errornull = "2>/dev/null" unless defined $errornull;
	120	} else {
	121	$errornull = '';
	122	}
	123
98b50af3	124	$cccmd = "$Config{'cc'} -o $tmp $ccflags $tmp.c @$LIBS $errornull"
3f2ee006	125	unless defined $cccmd;
98b50af3	126
c1363767	127	if ($^O eq 'VMS') {
3f2ee006	128	open( CMDFILE, ">$tmp.com" );
	129	print CMDFILE "\$ SET MESSAGE/NOFACILITY/NOSEVERITY/NOIDENT/NOTEXT\n";
	130	print CMDFILE "\$ $cccmd\n";
98b50af3	131	print CMDFILE "\$ IF \$SEVERITY .NE. 1 THEN EXIT 44\n"; # escalate
3f2ee006	132	close CMDFILE;
	133	system("\@ $tmp.com");
	134	$ok = $?==0;
5d899d7e	135	for ("$tmp.c", "$tmp$obj_ext", "$tmp.com", "$tmp$Config{exe_ext}") {
98b50af3	136	1 while unlink $_;
3f2ee006	137	}
	138	}
	139	else
	140	{
622913ab	141	my $tmp_exe = "$tmp$ld_exeext";
3f2ee006	142	printf "cccmd = $cccmd\n" if $VERBOSE;
622913ab	143	my $res = system($cccmd);
622913ab	144	$ok = defined($res) && $res==0 && -s $tmp_exe && -x _;
26e22fd9	145
26e22fd9	146	if ( $ok && exists $args{run} && $args{run}) {
06252d99	147	my $tmp_exe =
	148	File::Spec->catfile(File::Spec->curdir, $tmp_exe);
	149	printf "Running $tmp_exe..." if $VERBOSE;
	150	if (system($tmp_exe) == 0) {
56c1b3bd	151	$ok = 1;
26e22fd9	152	} else {
56c1b3bd	153	$ok = 0;
06252d99	154	print "[ system('$tmp_exe') failed: status $? ] ";
26e22fd9	155	}
26e22fd9	156	}
622913ab	157	unlink("$tmp.c", $tmp_exe);
3f2ee006	158	}
3f2ee006	159	}
5d899d7e	160
26e22fd9	161	return $ok;
3f2ee006	162	}
	163
	164	sub has_gettimeofday {
	165	# confusing but true (if condition true ==> -DHAS_GETTIMEOFDAY already)
56c1b3bd	166	return 0 if $Config{d_gettimeod};
98b50af3	167	return 1 if try_compile_and_link(<<EOM);
5d899d7e	168	#include "EXTERN.h"
	169	#include "perl.h"
	170	#include "XSUB.h"
	171	#ifdef I_SYS_TYPES
3f2ee006	172	# include <sys/types.h>
	173	#endif
	174
	175	#ifdef I_SYS_TIME
	176	# include <sys/time.h>
	177	#endif
	178
	179	#ifdef I_SYS_SELECT
	180	# include <sys/select.h> /* struct timeval might be hidden in here */
	181	#endif
	182	static int foo()
	183	{
	184	struct timeval tv;
	185	gettimeofday(&tv, 0);
	186	}
	187	int main _((int argc, char argv, char env))
	188	{
	189	foo();
	190	}
	191	EOM
	192	return 0;
	193	}
	194
	195	sub has_x {
98b50af3	196	my ($x, %args) = @_;
3f2ee006	197
	198	return 1 if
	199	try_compile_and_link(<<EOM, %args);
	200	#include "EXTERN.h"
	201	#include "perl.h"
	202	#include "XSUB.h"
	203
	204	#ifdef I_UNISTD
	205	# include <unistd.h>
	206	#endif
	207
	208	#ifdef I_SYS_TYPES
	209	# include <sys/types.h>
	210	#endif
	211
	212	#ifdef I_SYS_TIME
	213	# include <sys/time.h>
	214	#endif
	215
	216	int main _((int argc, char argv, char env))
	217	{
	218	$x;
	219	}
	220	EOM
	221	return 0;
	222	}
	223
26e22fd9	224	sub has_nanosleep {
56c1b3bd	225	print "Trying out nanosleep... ";
26e22fd9	226	return 1 if
	227	try_compile_and_link(<<EOM, run => 1);
	228	#include <time.h>
	229	#include <sys/time.h>
	230	#include <stdio.h>
	231	#include <stdlib.h>
	232	#include <errno.h>
	233
	234	/* int nanosleep(const struct timespec rqtp, struct timespec rmtp); */
	235
	236	int main() {
	237	struct timespec ts1, ts2;
56c1b3bd	238	int ret;
26e22fd9	239	ts1.tv_sec = 0;
	240	ts1.tv_nsec = 750000000;
	241	ts2.tv_sec = 0;
	242	ts2.tv_nsec = 0;
56c1b3bd	243	errno = 0;
	244	ret = nanosleep(&ts1, &ts2); /* E.g. in AIX nanosleep() fail and set errno to ENOSYS. */
	245	ret == 0 ? exit(0) : exit(errno ? errno : -1);
26e22fd9	246	}
	247	EOM
	248	}
	249
4ed0e2d4	250	sub has_include {
	251	my ($inc) = @_;
	252	return 1 if
	253	try_compile_and_link(<<EOM);
	254	#include "EXTERN.h"
	255	#include "perl.h"
	256	#include "XSUB.h"
	257
	258	#include <$inc>
	259	int main _((int argc, char argv, char env))
	260	{
	261	return 0;
	262	}
	263	EOM
	264	return 0;
	265	}
	266
046e3f33	267	sub init {
	268	my $hints = File::Spec->catfile("hints", "$^O.pl");
	269	if (-f $hints) {
	270	print "Using hints $hints...\n";
	271	local $self;
	272	do $hints;
	273	if (exists $self->{LIBS}) {
	274	$LIBS = $self->{LIBS};
	275	print "Extra libraries: @$LIBS...\n";
3f2ee006	276	}
3f2ee006	277	}
046e3f33	278
046e3f33	279	$DEFINE = '';
3f2ee006	280
98b50af3	281	print "Looking for gettimeofday()... ";
3f2ee006	282	my $has_gettimeofday;
5d899d7e	283	if (exists $Config{d_gettimeod}) {
5d899d7e	284	$has_gettimeofday++ if $Config{d_gettimeod};
3f2ee006	285	} elsif (has_gettimeofday()) {
	286	$DEFINE .= ' -DHAS_GETTIMEOFDAY';
	287	$has_gettimeofday++;
	288	}
	289
	290	if ($has_gettimeofday) {
98b50af3	291	print "found.\n";
3f2ee006	292	} else {
	293	die <<EOD
	294	Your operating system does not seem to have the gettimeofday() function.
	295	(or, at least, I cannot find it)
	296
	297	There is no way Time::HiRes is going to work.
	298
	299	I am awfully sorry but I cannot go further.
	300
	301	Aborting configuration.
	302
	303	EOD
	304	}
	305
98b50af3	306	print "Looking for setitimer()... ";
3f2ee006	307	my $has_setitimer;
5d899d7e	308	if (exists $Config{d_setitimer}) {
5d899d7e	309	$has_setitimer++ if $Config{d_setitimer};
3f2ee006	310	} elsif (has_x("setitimer(ITIMER_REAL, 0, 0)")) {
	311	$has_setitimer++;
	312	$DEFINE .= ' -DHAS_SETITIMER';
	313	}
	314
	315	if ($has_setitimer) {
98b50af3	316	print "found.\n";
3f2ee006	317	} else {
98b50af3	318	print "NOT found.\n";
3f2ee006	319	}
3f2ee006	320
98b50af3	321	print "Looking for getitimer()... ";
3f2ee006	322	my $has_getitimer;
5d899d7e	323	if (exists $Config{'d_getitimer'}) {
5d899d7e	324	$has_getitimer++ if $Config{'d_getitimer'};
3f2ee006	325	} elsif (has_x("getitimer(ITIMER_REAL, 0)")) {
	326	$has_getitimer++;
	327	$DEFINE .= ' -DHAS_GETITIMER';
	328	}
	329
	330	if ($has_getitimer) {
98b50af3	331	print "found.\n";
3f2ee006	332	} else {
98b50af3	333	print "NOT found.\n";
3f2ee006	334	}
	335
	336	if ($has_setitimer && $has_getitimer) {
4ed0e2d4	337	print "You have interval timers (both setitimer and getitimer).\n";
3f2ee006	338	} else {
98b50af3	339	print "You do not have interval timers.\n";
3f2ee006	340	}
3f2ee006	341
98b50af3	342	print "Looking for ualarm()... ";
98b50af3	343	my $has_ualarm;
5d899d7e	344	if (exists $Config{d_ualarm}) {
5d899d7e	345	$has_ualarm++ if $Config{d_ualarm};
3f2ee006	346	} elsif (has_x ("ualarm (0, 0)")) {
	347	$has_ualarm++;
	348	$DEFINE .= ' -DHAS_UALARM';
	349	}
	350
	351	if ($has_ualarm) {
98b50af3	352	print "found.\n";
3f2ee006	353	} else {
98b50af3	354	print "NOT found.\n";
	355	if ($has_setitimer) {
	356	print "But you have setitimer().\n";
	357	print "We can make a Time::HiRes::ualarm().\n";
3f2ee006	358	}
	359	}
	360
98b50af3	361	print "Looking for usleep()... ";
3f2ee006	362	my $has_usleep;
5d899d7e	363	if (exists $Config{d_usleep}) {
5d899d7e	364	$has_usleep++ if $Config{d_usleep};
3f2ee006	365	} elsif (has_x ("usleep (0)")) {
	366	$has_usleep++;
	367	$DEFINE .= ' -DHAS_USLEEP';
	368	}
	369
	370	if ($has_usleep) {
98b50af3	371	print "found.\n";
3f2ee006	372	} else {
98b50af3	373	print "NOT found.\n";
98b50af3	374	print "Let's see if you have select()... ";
56c1b3bd	375	if ($Config{'d_select'}) {
98b50af3	376	print "found.\n";
98b50af3	377	print "We can make a Time::HiRes::usleep().\n";
3f2ee006	378	} else {
98b50af3	379	print "NOT found.\n";
98b50af3	380	print "You won't have a Time::HiRes::usleep().\n";
3f2ee006	381	}
	382	}
	383
98b50af3	384	print "Looking for nanosleep()... ";
3f2ee006	385	my $has_nanosleep;
56c1b3bd	386	if (exists $Config{d_nanosleep} && !$ENV{FORCE_NANOSLEEP_SCAN}) {
56c1b3bd	387	# Believe $Config{d_nanosleep}.
c1363767	388	if ($Config{d_nanosleep}) {
	389	$has_nanosleep++;
	390	$DEFINE .= ' -DTIME_HIRES_NANOSLEEP';
	391	}
c077e422	392	} elsif ($^O ne 'mpeix' && # MPE/iX falsely finds nanosleep.
26e22fd9	393	has_nanosleep()) {
3f2ee006	394	$has_nanosleep++;
046e3f33	395	$DEFINE .= ' -DTIME_HIRES_NANOSLEEP';
3f2ee006	396	}
	397
	398	if ($has_nanosleep) {
98b50af3	399	print "found.\n";
4ed0e2d4	400	print "You can mix subsecond sleeps with signals, if you want to.\n";
4ed0e2d4	401	print "(It's still not portable, though.)\n";
3f2ee006	402	} else {
98b50af3	403	print "NOT found.\n";
622913ab	404	my $nt = ($^O eq 'os2' ? '' : 'not');
622913ab	405	print "You can$nt mix subsecond sleeps with signals.\n";
4ed0e2d4	406	print "(It would not be portable anyway.)\n";
	407	}
	408
	409	my $has_w32api_windows_h;
	410	if ($^O eq 'cygwin') {
	411	print "Looking for <w32api/windows.h>... ";
	412	if (has_include('w32api/windows.h')) {
	413	$has_w32api_windows_h++;
	414	$DEFINE .= ' -DHAS_W32API_WINDOWS_H';
	415	}
	416	if ($has_w32api_windows_h) {
	417	print "found.\n";
	418	} else {
	419	print "NOT found.\n";
	420	}
3f2ee006	421	}
	422
	423	if ($DEFINE) {
	424	$DEFINE =~ s/^\s+//;
	425	if (open(XDEFINE, ">xdefine")) {
	426	print XDEFINE $DEFINE, "\n";
	427	close(XDEFINE);
	428	}
	429	}
	430	}
	431
	432	sub doMakefile {
98b50af3	433	my @makefileopts = ();
3f2ee006	434
	435	if ($] >= 5.005) {
	436	push (@makefileopts,
	437	'AUTHOR' => 'Jarkko Hietaniemi <jhi@iki.fi>',
	438	'ABSTRACT_FROM' => 'HiRes.pm',
	439	);
	440	$DEFINE .= " -DATLEASTFIVEOHOHFIVE";
	441	}
	442
	443	push (@makefileopts,
	444	'NAME' => 'Time::HiRes',
	445	'VERSION_FROM' => 'HiRes.pm', # finds $VERSION
5d899d7e	446	'LIBS' => $LIBS, # e.g., '-lm'
5d899d7e	447	'DEFINE' => $DEFINE, # e.g., '-DHAS_SOMETHING'
3f2ee006	448	'XSOPT' => $XSOPT,
3f2ee006	449	# do not even think about 'INC' => '-I/usr/ucbinclude', Solaris will avenge.
5d899d7e	450	'INC' => '', # e.g., '-I/usr/include/other'
3f2ee006	451	'INSTALLDIRS' => 'perl',
	452	'dist' => {
	453	'CI' => 'ci -l',
5d899d7e	454	'COMPRESS' => 'gzip -9f',
3f2ee006	455	'SUFFIX' => 'gz',
	456	},
	457	clean => { FILES => "xdefine" },
1caec985	458	realclean => { FILES=> 'const-c.inc const-xs.inc' },
3f2ee006	459	);
3f2ee006	460
9ac5eb64	461	if ($ENV{PERL_CORE}) {
	462	push @makefileopts, MAN3PODS => {};
	463	}
	464
3f2ee006	465	WriteMakefile(@makefileopts);
	466	}
	467
98b50af3	468	sub doConstants {
	469	if (eval {require ExtUtils::Constant; 1}) {
	470	my @names = (qw(ITIMER_REAL ITIMER_VIRTUAL ITIMER_PROF
	471	ITIMER_REALPROF));
	472	foreach (qw (d_usleep d_ualarm d_gettimeofday d_getitimer d_setitimer
	473	d_nanosleep)) {
	474	my $macro = $_;
672f6857	475	if ($macro eq 'd_nanosleep') {
	476	$macro =~ s/d_(.*)/TIME_HIRES_\U$1/;
	477	} else {
	478	$macro =~ s/d_(.*)/HAS_\U$1/;
	479	}
98b50af3	480	push @names, {name => $_, macro => $macro, value => 1,
	481	default => ["IV", "0"]};
	482	}
	483	ExtUtils::Constant::WriteConstants(
	484	NAME => 'Time::HiRes',
	485	NAMES => \@names,
	486	);
	487	} else {
1fbb4de4	488	my $file;
1fbb4de4	489	foreach $file ('const-c.inc', 'const-xs.inc') {
98b50af3	490	my $fallback = File::Spec->catfile('fallback', $file);
	491	local $/;
	492	open IN, "<$fallback" or die "Can't open $fallback: $!";
	493	open OUT, ">$file" or die "Can't open $file: $!";
	494	print OUT <IN> or die $!;
	495	close OUT or die "Can't close $file: $!";
	496	close IN or die "Can't close $fallback: $!";
	497	}
	498	}
	499	}
3f2ee006	500
98b50af3	501	sub main {
98b50af3	502	print "Configuring Time::HiRes...\n";
1fbb4de4	503	if ($] == 5.007002) {
	504	die "Cannot Configure Time::HiRes for Perl $], aborting.\n";
	505	}
3f2ee006	506
	507	if ($^O =~ /Win32/i) {
	508	$DEFINE = '-DSELECT_IS_BROKEN';
046e3f33	509	$LIBS = [];
3f2ee006	510	} else {
046e3f33	511	init();
3f2ee006	512	}
3f2ee006	513	doMakefile;
98b50af3	514	doConstants;
3f2ee006	515	my $make = $Config{'make'} \|\| "make";
1fbb4de4	516	unless (exists $ENV{PERL_CORE} && $ENV{PERL_CORE}) {
3f2ee006	517	print <<EOM;
3f2ee006	518	Now you may issue '$make'. Do not forget also '$make test'.
dfffa540	519	EOM
1fbb4de4	520	if ((exists $ENV{LC_ALL} && $ENV{LC_ALL} =~ /utf-?8/i) \|\|
	521	(exists $ENV{LC_CTYPE} && $ENV{LC_CTYPE} =~ /utf-?8/i) \|\|
	522	(exists $ENV{LANG} && $ENV{LANG} =~ /utf-?8/i)) {
dfffa540	523	print <<EOM;
dfffa540	524	NOTE: if you get an error like this (the line number may vary):
d7358e6a	525	Makefile:91: *** missing separator
1caec985	526	then set the environment variable LC_ALL to "C" and retry
1caec985	527	from scratch (re-run perl "Makefile.PL").
3f2ee006	528	EOM
dfffa540	529	}
3f2ee006	530	}
	531	}
	532
	533	&main;
dcf686c9	534
3f2ee006	535	# EOF