use Data::Dumper;
use Config;
use Cwd qw(abs_path);
use ExtUtils::MakeMaker 6.64;
use Getopt::Long;
GetOptions(
'gdb:s' => \$gdb,
debug => \$debug,
help => \$help,
);
usage() if $help;
#============================================================================
# What python are we going to try?
#============================================================================
my $sel = $ENV{INLINE_PYTHON_EXECUTABLE};
unless ($sel) {
my @pythons;
my %pythons;
my $sep = $^O eq 'MSWin32' ? ";" : ":";
for $p (split /$sep/, $ENV{PATH}) {
$p =~ s/^~/$ENV{HOME}/;
$p .= "/python";
next unless -f $p and -x $p;
next if $pythons{abs_path($p)}++; # filter symlinked duplicates
push @pythons, { path => $p };
}
# Keep them in PATH order.
# @pythons = sort { $a->{path} cmp $b->{path} } @pythons;
my $num = 1;
print "Found these python executables on your PATH:\n";
print $num++ . ". " . $_->{path} . "\n" for @pythons;
if (@pythons == 1 and not $sel) {
$sel = $pythons[0];
print "Using the only python executable I could find\n";
print 'Set the INLINE_PYTHON_EXECUTABLE environment variable to'
. " the full path to your python executable to override this selection.\n";
}
unless ($sel) {
$sel = prompt("Use which?", '1');
if ($sel =~ /^\d+$/) {
die 'Invalid number. Please enter only numbers from 1 to ' . ($num - 1)
. " or the full path to your python executable.\n"
. 'Set the INLINE_PYTHON_EXECUTABLE environment variable to'
. " the full path to your python executable to avoid this question.\n"
if $sel > ($num - 1);
$sel = $pythons[$sel - 1];
}
}
}
$sel = { path => $sel } unless ref $sel eq 'HASH'; # in case the user entered a path
print "Using $sel->{path}\n";
#============================================================================
# Interrogate the python interpreter (or the user) for required flags
#============================================================================
interrogate($sel);
# Fix up the libpath and libpython
die "Could not find Python.h in include path. make will not work" unless -e "$sel->{incpath}/Python.h";
substr($sel->{incpath}, 0, 0) = "-I";
substr($sel->{libpath}, 0, 0) = "-L";
$sel->{libpython} =~ s/lib(.*)(?:\.\Q$Config{dlext}\E|\Q$Config{_a}\E)/-l$1/;
my @flags;
push @flags, debug_flag() if defined $gdb;
push @flags, '-DI_PY_DEBUG' if $debug;
push @flags, 'none (perl Makefile.PL --help for details)' unless @flags;
print <<END;
Using These Settings:
Extra Libs: $sel->{syslibs}
Python Lib: $sel->{libpath} $sel->{libpython}
Includes: $sel->{incpath}
Extra Flags: @flags
END
#============================================================================
# Finalize, and write the makefile
#============================================================================
$defs = join ' ', qw(-DEXPOSE_PERL -DCREATE_PYTHON -UCREATE_PERL),
$debug ? "-DI_PY_DEBUG" : ();
WriteMakefile(
$defs ? (DEFINE => $defs) : (),
defined $gdb ? (OPTIMIZE => debug_flag()) : (),
INC => $sel->{incpath},
LIBS => (join " ", @$sel{qw(libpath libpython syslibs)}),
NAME => 'Inline::Python',
ABSTRACT_FROM => 'Python.pod',
AUTHOR => 'Neil Watkiss <NEILW@cpan.org>',
LICENSE => 'perl',
VERSION_FROM => 'Python.pm',
PREREQ_PM => {
'Inline' => 0.46,
'Digest::MD5' => 2.50,
'Data::Dumper' => 0,
},
TEST_REQUIRES => {
'Test' => 0,
'Test::More' => 0,
'Test::Deep' => 0,
'Proc::ProcessTable' => '0.53',
},
OBJECT => 'Python.o py2pl.o perlmodule.o util.o',
META_MERGE => {
"meta-spec" => { version => 2 },
resources => {
repository => {
type => 'git',
url => 'http://github.com/niner/inline-python-pm.git',
web => 'http://github.com/niner/inline-python-pm',
},
},
},
clean => {FILES => 'blib_test/'},
);
#============================================================================
# Tries to ask the python interpreter what libraries we need, where its
# include directories are, etc.
#============================================================================
sub interrogate {
my $ref = shift;
return query_options($ref) unless test_interrogate($ref);
$ref->{syslibs} = get_config_var($ref, "LIBS");
$ref->{incpath} = get_config_var($ref, "INCLUDEPY");
$ref->{libpath} = get_config_var($ref, "LIBPL");
$ref->{ldlib} = get_config_var($ref, "LDLIBRARY");
$ref->{libpython} = get_config_var($ref, "LIBRARY");
my $tmp = rindex($ref->{libpython}, '/') + 1;
$ref->{libpython} = substr($ref->{libpython}, $tmp);
$ref->{libpath} = join '/', (get_config_var($ref, "LIBDEST"),
'config')
if ($ref->{libpath} eq 'None');
return query_options($ref) unless sanity_check($ref);
}
sub test_interrogate {
my $ref = shift;
`$ref->{path} -c "import distutils.sysconfig; distutils.sysconfig.get_config_var" 2>&1`;
print <<END if $?;
This python is so old it doesn't know how to answer my questions.
Instead, you will be asked a series of questions about it. If possible,
I will give you a set of reasonable options to choose from. You can
always enter the complete answer yourself if none of mine are correct.
END
#' stupid vim.
return $? == 0 ? 1 : 0;
}
sub sanity_check {
my $ref = shift;
$ref->{libpython} = $ref->{ldlib}
if not -f join '/', $ref->{libpath}, $ref->{libpython}
and -f join '/', $ref->{libpath}, $ref->{ldlib};
unless (-d $ref->{libpath} &&
-d $ref->{incpath} &&
(-f join '/', $ref->{libpath}, $ref->{libpython})
) {
print <<END and return 0;
This python's configuration files are messed up. You'll have have to
answer the questions yourself. Here is what Python said:
Extra Libs: $sel->{syslibs}
Python Library: $sel->{libpath}/$sel->{libpython}
Include Path: $sel->{incpath}
END
# ' stupid vim.
}
return 1;
}
sub get_config_var {
my $ref = shift;
my $key = shift;
my $exe = $ref->{path};
my $val = `$exe -c "import distutils.sysconfig; print(distutils.sysconfig.get_config_var('$key'))"`;
chomp $val;
return $val;
}
sub query_options {
my $ref = shift;
# Every python I've seen needs pthreads. Obviously not on windows.
my $libs_guess = $ref->{syslibs} ? $ref->{syslibs} :
$^O eq 'MSWin32' ? '' : '-lpthread';
print <<END;
1. LIBS option. I need to know what extra libraries, if any,
are required by this build of python. I recommend this:
${ $libs_guess ? \$libs_guess : \"No extra libraries" }
END
$ref->{syslibs} = prompt("Enter extra libraries (e.g. -lfoo -lbar)",
$libs_guess);
print <<END;
2. LIBRARY option. The location of the python library.
Inline::Python needs to link against it to use Python.
Here are the libraries I know about:
END
my @libs = show_python_libs($ref);
my $lib = prompt("Which? Or enter another.", '1');
$lib = $libs[$lib-1] if $lib =~ /^\d+$/;
$lib =~ s|\\|/|g;
$ref->{libpath} = substr($lib, 0, rindex($lib, '/'));
$ref->{libpython} = substr($lib, rindex($lib, '/')+1);
print <<END;
3. INCLUDE option. The location of the python include files.
Inline::Python needs these to compile.
Here are the locations I know about:
END
my @incs = show_python_incs($ref);
my $inc = prompt("Which? Or enter another.", '1');
$inc = $incs[$inc-1] if $inc =~ /^\d+$/;
$ref->{incpath} = $inc;
}
#============================================================================
# Python libraries to look for
#============================================================================
sub show_python_libs {
my $ref = shift;
my $exe = $ref->{path};
# Convert the exe into a glob where we might find a library:
$exe =~ s|[^/]+$||;
$exe .= "../lib/python*/config/libpython*";
my @py_libs =
(
(map { $exe . $_ } '.a', '.so', '.lib'),
'/usr/lib64/libpython*.a',
'/usr/lib64/libpython*.so',
'/usr/lib/libpython*.a',
'/usr/lib/libpython*.so',
'/usr/lib64/python*/config/libpython*.a',
'/usr/lib64/python*/config/libpython*.so',
'/usr/lib/python*/config/libpython*.a',
'/usr/lib/python*/config/libpython*.so',
'/usr/local/lib/libpython*.a',
'/usr/local/lib/libpython*.so',
'/usr/local/ActivePython-*/lib/python*/config/libpython*.a',
'/usr/local/ActivePython-*/lib/python*/config/libpython*.so',
# Win32 support
'C:/Python*/libs/python*.lib',
'C:/Program Files/Python*/libs/python*.lib',
);
my (@found, %found);
push @found, grep { -f && $found{abspath($_)}++ == 0 } glob for @py_libs;
@found = sort map { abspath($_) } @found;
my $num = '1';
print "\t " . $num++ . ") " . $_ . "\n" for @found;
print "\n";
return @found;
}
#============================================================================
# Python include files to look for
#============================================================================
sub show_python_incs {
my $ref = shift;
my $exe = $ref->{path};
# Convert the exe into a glob where we might find the includes:
$exe =~ s|[^/]+$||;
$exe .= "../include/python*";
my @py_incs =
(
$exe,
'/usr/local/ActivePython-*/include/python*',
'/usr/include/python*',
'/usr/local/include/python*',
# Win32 support
'C:/Python*/include',
'C:/Program Files/Python*/include',
);
my (@found, %found);
push @found, grep { -d && $found{abspath($_)}++ == 0 } glob for @py_incs;
@found = sort map { abspath($_) } @found;
my $num = 1;
print "\t " . $num++ . ") " . $_ . "\n" for @found;
print "\n";
return @found;
}
# This can deal with files as well as directories
sub abspath {
use Cwd qw(abs_path);
my ($path, $file) = shift;
if (-f $path) {
my @p = split '/', $path;
$path = join '/', @p[0..$#p-1]; # can't use -2 in a range
$file = $p[-1];
}
$path = abs_path($path);
return defined $file ? join '/', $path, $file : $path;
}
sub debug_flag {
return $gdb if $gdb;
$Config{osname} eq 'MSWin32' ? return '-Zi' : return '-g';
}
sub usage {
print <<'END';
Options:
-gdb: Turn on compiler's debugging flag (use my guess).
-gdb=x Pass your own debugging flag, not mine.
-debug: Turn on many diagnostic print statements inside Inline::Python.
This option is useful for tracing the execution path when
debugging.
-help: This output.
END
# ' stupid vim
exit 0;
}