| Subject: | [Patch] Build.PL ignores $PKG_CONFIG_PATH in env |
I have to build the gsl library in a non-standard location (on an NFS volume so that it can be seen throughout the lab). When I run Build.PL it cannot find my installation, OK, no big surprise, I'll just follow the instructions and export my NFS path in $PKG_CONFIG_PATH. Unfortunately, the modify_env() function in Build.PL ignores my setting. I re-wrote modify_env() so that it now works for me. Attached is my version of Build.PL with an updated modify_env().
Math-GSL-0.27
This is perl 5, version 16, subversion 3 (v5.16.3) built for x86_64-linux
Linux lxcvipal.cv.hp.com 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
| Subject: | Build.PL |
#!/usr/bin/perl -w
# This has been heavily modified from the Device::Cdio Build.PL
# Jonathan "Duke" Leto <jonathan@leto.net>
# Copyright (C) 2006 Rocky Bernstein <rocky@cpan.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
use strict;
use warnings;
use Config;
use Data::Dumper;
use Module::Build;
use lib 'inc';
use GSLBuilder;
use File::Spec::Functions qw/:ALL/;
BEGIN {
eval { require ExtUtils::PkgConfig };
if ($@) {
print "\nI see that you are a CPANTester, you really should install ExtUtils::PkgConfig !\n"
if $ENV{AUTOMATED_TESTING};
print <<EXIT;
ExtUtils::PkgConfig is currently needed to find GSL for the compilation of this module.
It may be bundled with Math::GSL in the future.
EXIT
exit 0;
}
}
sub try_compile {
my ($c, %args) = @_;
my $ok = 0;
my $tmp = "tmp$$";
local(*TMPC);
my $obj_ext = $Config{_o} || ".o";
unlink("$tmp.c", "$tmp$obj_ext");
if (open(TMPC, ">", "$tmp.c")) {
print TMPC $c;
close(TMPC);
my $cccmd = $args{cccmd};
my $errornull;
my $ccflags = $Config{'ccflags'};
$ccflags .= " $args{ccflags}" if $args{ccflags};
if ($args{silent} ) {
$errornull = "2>/dev/null" unless defined $errornull;
} else {
$errornull = '';
}
$cccmd = "$Config{'cc'} -o $tmp $ccflags $tmp.c $errornull"
unless defined $cccmd;
printf "cccmd = $cccmd\n" if $args{verbose};
my $res = system($cccmd);
$ok = defined($res) && $res == 0;
if ( !$ok ) {
my $errno = $? >> 8;
local $! = $errno;
print "
*** The test compile of '$tmp.c' failed: status $?
*** (the status means: errno = $errno or '$!')
*** DO NOT PANIC: this just means that you may get some innocuous
*** compiler warnings.
";
}
unlink("$tmp.c");
}
return $ok;
}
sub try_cflags ($) {
my ($ccflags) = @_;
my $c_prog = "int main () { return 0; }\n";
print "Checking if $Config{cc} supports \"$ccflags\"...";
my $result = try_compile($c_prog, ccflags=>$ccflags);
if ($result) {
print "yes\n";
return " $ccflags";
}
print "no\n";
return '';
}
print "Checking for GSL..\n";
chomp(my $gv = qx{gsl-config --version});
chomp(my $gsl_prefix = qx{gsl-config --prefix});
chomp(my $gsl_cflags = qx{gsl-config --cflags});
chomp(my $gsl_libs = qx{gsl-config --libs});
my $MIN_GSL_VERSION = "1.11";
my $path_system = catfile(qw/swig system.i/);
open my $fh, ">", "$path_system" or die "Could not create $path_system : $!";
my $current_version;
if (defined $gv) {
if ($gv =~ m{\A(\d+(?:\.\d+)+)}) {
$current_version = $1;
my @current = split /\./, $current_version;
print $fh "#define GSL_MAJOR_VERSION $current[0]\n";
print $fh "#define GSL_MINOR_VERSION $current[1]\n";
if (GSLBuilder::cmp_versions($current_version, $MIN_GSL_VERSION) == -1) {
printf "
***
*** You need to have GSL %s or greater installed. (You have $gv).
*** Get GSL at http://www.gnu.org/software/gsl\n", $MIN_GSL_VERSION;
exit 1;
} else {
print "Found GSL $gv (via gsl-config) installed in $gsl_prefix, CFLAGS=$gsl_cflags, $gsl_libs\n";
}
} else {
print "
***
*** Can't parse GSL version $gv.
*** Will continue and keep my fingers crossed for luck.
";
}
} else {
print "
***
*** Can't find GSL configuration info. Is GSL installed?
*** Get GSL at http://www.gnu.org/software/gsl
";
exit 1;
}
close $fh or die "Could not close $path_system : $!";
modify_env();
print "Asking ExtUtils::PkgConfig with ENV{PKG_CONFIG_PATH}=" . ($ENV{PKG_CONFIG_PATH} || '') . "\n";
my %gsl_pkgcfg = ExtUtils::PkgConfig->find ('gsl');
my $pkgcfg_ver = $gsl_pkgcfg{'modversion'};
warn "pkgconfig version $pkgcfg_ver != gsl-config $gv possible misconfiguration" if $pkgcfg_ver ne $gv;
my $ccflags = $gsl_pkgcfg{cflags};
# In case GSL in installed in the system-wide directory, $ccflags is
# empty (because pkg-config remove -I/usr/include), but swig needs it
my $swig_flags = '';
if ($ccflags =~ /^\s*$/ ) {
$swig_flags =' -I/usr/include';
}
## Swig produces a number of GCC warnings. Turn them off if we can.
$ccflags .= try_cflags("-Wall");
#$ccflags .= try_cflags("-Wno-strict-aliasing");
$ccflags .= try_cflags("-Wno-unused-function");
$ccflags .= try_cflags("-Wno-unused-value");
$ccflags .= try_cflags("-Wno-unused-function");
$ccflags .= try_cflags("-Wno-unused-variable");
$ccflags .= try_cflags("-g");
my $ldflags = "$gsl_pkgcfg{libs} -gsl";
$swig_flags = "$gsl_pkgcfg{cflags} $swig_flags";
if ( GSLBuilder::is_cygwin() && $Config{shrpenv} =~ m{\Aenv LD_RUN_PATH=(.*)\Z} ) {
$ldflags .= " -L$1 -lperl";
# Should we check the 32-ness?
$swig_flags = '-DNEED_LONG';
} elsif (GSLBuilder::is_darwin()) {
$ldflags .= ' -bundle -flat_namespace ';
}
if ($Config{archname} =~ /x86_64|amd64/ ) {
$ldflags .= ' -fPIC -fno-omit-frame-pointer ';
$ccflags .= ' -fPIC -fno-omit-frame-pointer ';
}
my @Subsystems = grep { ! /^Test$/ } GSLBuilder::subsystems();
my $cleanup = qq{
xs/*_wrap*.c core *.core swig/system.i swig/renames.i
swig/*.o Makefile Math-GSL-* tmp* pod2ht*.tmp _build pm
lib/Math/GSL/[A-z]+/* blib *.so *.orig
} . join " ", map { catfile( (qw/lib Math GSL/, "$_.pm") ) } @Subsystems;
unless (GSLBuilder::is_darwin()) {
$ldflags = '-shared ' . $ldflags;
}
my $ver2func = do(catfile(qw/inc ver2func/));
unless (GSLBuilder::is_release()) {
my $swig_ver = swig_version();
if ((split(/\./, $swig_ver))[0] < 2) {
print "
***
*** You need to have SWIG 2.X or greater installed. (You have $swig_ver).
*** Get SWIG at http://www.swig.org/\n";
exit 1;
}
}
my $builder = GSLBuilder->new(
module_name => 'Math::GSL',
add_to_cleanup => [ $cleanup ],
dist_abstract => 'Interface to the GNU Scientific Library using SWIG',
dist_author => 'Jonathan Leto <jonathan@leto.net>',
dist_version_from => catfile(qw/lib Math GSL.pm/),
include_dirs => [],
extra_linker_flags => $ldflags,
extra_compiler_flags=> "$ccflags " . ($ENV{CC_FLAGS}||''),
swig_flags => $swig_flags,
license => 'gpl',
meta_merge => {
resources => {
repository => 'http://github.com/leto/math--gsl/tree/master'
},
},
build_requires => {
'Test::Most' => 0,
'Test::Exception' => 0.21,
'Test::Class' => 0.12,
},
requires => {
'ExtUtils::PkgConfig' => '1.03',
'Scalar::Util' => 0,
version => '0.77',
perl => '5.8.0',
},
sign => 0,
configure_requires => {
'ExtUtils::PkgConfig' => '1.03',
'Module::Build' => '0.38',
},
swig_source => [
map { [ catfile("swig", "$_.i"), [ catfile("pod", "$_.pod")] ] } @Subsystems ,
],
ver2func => $ver2func,
current_version => $current_version,
);
$builder->add_build_element('swig');
$builder->create_build_script();
print "Have a great day!\n";
sub swig_version {
my $cmd = "swig -version";
my $out = `$cmd`;
if ($?) {
die "Can't run [$cmd] : $out";
}
if ($out =~ /swig\s+version\s+([\d\.]+)\n/i) {
return $1;
} else {
die "Can't parse SWIG version from this output:\n$out";
}
}
sub modify_env {
# TODO: What about windows and darwin?
my @guesses =
qw(
/usr/pkgconfig
/usr/lib/pkgconfig
/usr/local/lib/pkgconfig
/usr/local/pkgconfig
/usr/libdata/pkgconfig
/usr/local/libdata/pkgconfig
/opt/pkgconfig
);
unshift @guesses, $ENV{PKG_CONFIG_PATH}
if defined( $ENV{PKG_CONFIG_PATH} )
and length $ENV{PKG_CONFIG_PATH};
$ENV{PKG_CONFIG_PATH} = join ':', @guesses;
return;
}