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# A debhelper build system class for handling CMake based projects.
# It prefers out of source tree building.
#
# Copyright: © 2008-2009 Modestas Vainius
# License: GPL-2+
package Debian::Debhelper::Buildsystem::cmake;
use strict;
use Debian::Debhelper::Dh_Lib qw(compat);
use base 'Debian::Debhelper::Buildsystem::makefile';
sub DESCRIPTION {
"CMake (CMakeLists.txt)"
}
sub check_auto_buildable {
my $this=shift;
my ($step)=@_;
if (-e $this->get_sourcepath("CMakeLists.txt")) {
my $ret = ($step eq "configure" && 1) ||
$this->SUPER::check_auto_buildable(@_);
# Existence of CMakeCache.txt indicates cmake has already
# been used by a prior build step, so should be used
# instead of the parent makefile class.
$ret++ if ($ret && -e $this->get_buildpath("CMakeCache.txt"));
return $ret;
}
return 0;
}
sub new {
my $class=shift;
my $this=$class->SUPER::new(@_);
$this->prefer_out_of_source_building(@_);
return $this;
}
sub configure {
my $this=shift;
my @flags;
# Standard set of cmake flags
push @flags, "-DCMAKE_INSTALL_PREFIX=/usr";
push @flags, "-DCMAKE_VERBOSE_MAKEFILE=ON";
push @flags, "-DCMAKE_BUILD_TYPE=RelWithDebInfo";
# CMake doesn't respect CPPFLAGS, see #653916.
if ($ENV{CPPFLAGS} && ! compat(8)) {
$ENV{CFLAGS} .= ' ' . $ENV{CPPFLAGS};
$ENV{CXXFLAGS} .= ' ' . $ENV{CPPFLAGS};
}
$this->mkdir_builddir();
eval {
$this->doit_in_builddir("cmake", $this->get_source_rel2builddir(), @flags, @_);
};
if ($@) {
if (-e $this->get_buildpath("CMakeCache.txt")) {
$this->doit_in_builddir("tail -v -n +0 CMakeCache.txt");
}
die $@;
}
}
sub test {
my $this=shift;
# Unlike make, CTest does not have "unlimited parallel" setting (-j implies
# -j1). So in order to simulate unlimited parallel, allow to fork a huge
# number of threads instead.
my $parallel = ($this->get_parallel() > 0) ? $this->get_parallel() : 999;
$ENV{CTEST_OUTPUT_ON_FAILURE} = 1;
return $this->SUPER::test(@_, "ARGS+=-j$parallel");
}
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