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|
use ExtUtils::MakeMaker;
use strict;
use Config;
# Suppress warnings about parameters we allow the user to specify.
$ExtUtils::MakeMaker::Recognized_Att_Keys{CPPFLAGS} = 1;
$ExtUtils::MakeMaker::Recognized_Att_Keys{CXX} = 1;
$ExtUtils::MakeMaker::Recognized_Att_Keys{CXXFLAGS} = 1;
$ExtUtils::MakeMaker::Recognized_Att_Keys{XAPIAN_CONFIG} = 1;
my $builddir;
my $srcdir = $0;
if ($srcdir =~ s!/([^/]*)$!!) {
# Set $0 to be just the leafname. If we don't, WriteMakefile() reruns this
# script for reasons unknown, leading to a seemingly infinite loop
# consuming increasing amounts of memory. With setting $0, it still reruns
# this script, but only once.
$0 = $1;
chomp($builddir = `pwd`);
chdir $srcdir;
}
my $xapian_config;
my $CC;
my %var = ();
for (@ARGV) {
if (/^XAPIAN_CONFIG=(.*)/) {
$xapian_config = $1;
} elsif (/^CXX=(.*)/) {
$CC = $1;
} elsif (/^(C(?:XX|PP)FLAGS)=(.*)/) {
$var{$1} = $2;
}
}
if (!defined $xapian_config && exists $ENV{XAPIAN_CONFIG}) {
$xapian_config = $ENV{XAPIAN_CONFIG};
push @ARGV, "XAPIAN_CONFIG=$xapian_config";
}
$xapian_config ||= 'xapian-config';
if (!defined $CC && exists $ENV{CXX}) {
$CC = $ENV{CXX};
push @ARGV, "CXX=$CC";
}
$CC ||= 'g++';
my $LD = '$(CC)';
if ($^O eq 'cygwin' and $CC eq 'g++') {
# Cygwin packages of Perl < 5.9.5 used "ld2" for $Config{ld} and
# $Config{lddlflags} didn't contain -shared so we need to specify
# this explicitly. Perl >= 5.9.5 package do away with "ld2", but
# it should be harmless to specify "-shared" there.
$LD = 'g++ -shared';
}
my $xver = `$xapian_config --version`;
if ($xver eq '') {
print STDERR <<END;
$xapian_config not found.
You need Xapian installed before you can build SymbolTest. If you have
installed Xapian from a package, you will also need to install the correspoding
-dev or -devel package. If Xapian is installed but xapian-config isn't on your
PATH you can tell Makefile.PL this by running it like so:
perl Makefile.PL XAPIAN_CONFIG=/path/to/xapian-config
END
# Perversely, the CPAN automatic testing script expects exit status 0 to
# indicate "can't build because of missing dependencies" (which it
# distinguishes from "all OK" by seeing if Makefile is generated). So we
# exit with status 0 in this case to avoid being spammed with useless
# "bug" reports from testers without Xapian installed.
exit(0);
}
chomp($xver);
$xver =~ s/.*\s//; # "xapian 1.2.0" -> "1.2.0"
my $inc = `$xapian_config --cxxflags`;
chomp($inc);
my @writemakefile_args = ();
my $libsvar = 'LIBS';
my $libs = `$xapian_config --libs 2> /dev/null`;
chomp($libs);
my ($xapian_config_dir) = $xapian_config =~ /^(.*?)[^\/]*$/;
if ($? || ($xapian_config_dir ne '' && -f "${xapian_config_dir}Makefile")) {
# Assume we're being asked to build against an uninstalled xapian-core.
my $libtool = "${xapian_config_dir}libtool";
unless (-x $libtool) {
die "You've asked me to link against what appears to be an uninstalled xapian-core tree, but I can't find libtool in that tree\n";
}
# We can't pass a .la file in LIBS since MakeMaker "knows better" and
# ignores it. Passing it in LDLOADLIBS works, but generates a warning.
# We can avoid the warning by setting LDLOADLIBS using 'macro'.
$libsvar = 'macro';
$libs = `$xapian_config --ltlibs`;
chomp($libs);
$libs = {'LDLOADLIBS' => $libs};
$LD = "$libtool --tag=CXX --mode=link $CC -avoid-version -module";
$LD .= " -rpath \$(PERL_ARCHLIB)/auto/\$(FULLEXT)";
$LD .= " -shrext .".$Config{'dlext'};
$CC = "$libtool --tag=CXX --mode=compile $CC";
push @writemakefile_args, (
'OBJ_EXT' => '.lo',
'DLEXT' => 'la',
'FULLPERL' => '$(PERL) "-I$(INST_ARCHAUTODIR)/.libs"',
);
}
# Filter out some gcc options which g++ doesn't support.
my $CCFLAGS = $Config{'ccflags'};
# Perl is built with -Wdeclaration-after-statement on RHEL5 - this isn't
# meaningful for C++ - it only emits a warning but it's easy to fix.
$CCFLAGS =~ s/(?:^|\s+)-Wdeclaration-after-statement(?:\s+|$)/ /;
# The generated code causes "variable may be used uninitialized" warnings
# if Perl was built with -Wall.
$CCFLAGS =~ s/(^|\s+)-Wall(\s+|$)/$1-Wall -Wno-uninitialized$2/;
$CCFLAGS .= ' ' . $var{CPPFLAGS} if exists $var{CPPFLAGS};
$CCFLAGS .= ' ' . $var{CXXFLAGS} if exists $var{CXXFLAGS};
# See lib/ExtUtils/MakeMaker.pm for details of how to influence
# the contents of the Makefile that is written.
push @writemakefile_args, (
'NAME' => 'SymbolTest',
'VERSION_FROM' => 'SymbolTest.pm', # finds $VERSION
'PREREQ_PM' => {}, # e.g., Module::Name => 1.1
$libsvar => $libs, # e.g., '-lm'
'DEFINE' => '', # e.g., '-DHAVE_SOMETHING'
'CC' => $CC,
'CCFLAGS' => $CCFLAGS,
'LD' => $LD,
'INC' => $inc, # e.g., '-I/usr/include/other'
'OBJECT' => '$(BASEEXT)$(OBJ_EXT)',
'XSOPT' => '-C++',
);
WriteMakefile(@writemakefile_args);
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