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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 warnings;
use Debian::Debhelper::Dh_Lib qw(compat dpkg_architecture_value error is_cross_compiling);
use parent qw(Debian::Debhelper::Buildsystem);
my @STANDARD_CMAKE_FLAGS = qw(
-DCMAKE_INSTALL_PREFIX=/usr
-DCMAKE_VERBOSE_MAKEFILE=ON
-DCMAKE_BUILD_TYPE=None
-DCMAKE_INSTALL_SYSCONFDIR=/etc
-DCMAKE_INSTALL_LOCALSTATEDIR=/var
-DCMAKE_EXPORT_NO_PACKAGE_REGISTRY=ON
-DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON
);
my %DEB_HOST2CMAKE_SYSTEM = (
'linux' => 'Linux',
'kfreebsd' => 'kFreeBSD',
'hurd' => 'GNU',
);
my %TARGET_BUILD_SYSTEM2CMAKE_GENERATOR = (
'makefile' => 'Unix Makefiles',
'ninja' => 'Ninja',
);
sub DESCRIPTION {
"CMake (CMakeLists.txt)"
}
sub IS_GENERATOR_BUILD_SYSTEM {
return 1;
}
sub SUPPORTED_TARGET_BUILD_SYSTEMS {
return qw(makefile ninja);
}
sub check_auto_buildable {
my $this=shift;
my ($step)=@_;
if (-e $this->get_sourcepath("CMakeLists.txt")) {
my $ret = ($step eq "configure" && 1) ||
$this->get_targetbuildsystem->check_auto_buildable(@_);
if ($this->check_auto_buildable_clean_oos_buildir(@_)) {
# Assume that the package can be cleaned (i.e. the build directory can
# be removed) as long as it is built out-of-source tree and can be
# configured.
$ret++ if not $ret;
}
# 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;
# Standard set of cmake flags
my @flags = @STANDARD_CMAKE_FLAGS;
my $backend = $this->get_targetbuildsystem->NAME;
if (not compat(10)) {
push(@flags, '-DCMAKE_INSTALL_RUNSTATEDIR=/run');
}
if (exists($TARGET_BUILD_SYSTEM2CMAKE_GENERATOR{$backend})) {
my $generator = $TARGET_BUILD_SYSTEM2CMAKE_GENERATOR{$backend};
push(@flags, "-G${generator}");
}
if ($ENV{CC}) {
push @flags, "-DCMAKE_C_COMPILER=" . $ENV{CC};
}
if ($ENV{CXX}) {
push @flags, "-DCMAKE_CXX_COMPILER=" . $ENV{CXX};
}
if (is_cross_compiling()) {
my $deb_host = dpkg_architecture_value("DEB_HOST_ARCH_OS");
if (my $cmake_system = $DEB_HOST2CMAKE_SYSTEM{$deb_host}) {
push(@flags, "-DCMAKE_SYSTEM_NAME=${cmake_system}");
} else {
error("Cannot cross-compile - CMAKE_SYSTEM_NAME not known for ${deb_host}");
}
push @flags, "-DCMAKE_SYSTEM_PROCESSOR=" . dpkg_architecture_value("DEB_HOST_GNU_CPU");
if (not $ENV{CC}) {
push @flags, "-DCMAKE_C_COMPILER=" . dpkg_architecture_value("DEB_HOST_GNU_TYPE") . "-gcc";
}
if (not $ENV{CXX}) {
push @flags, "-DCMAKE_CXX_COMPILER=" . dpkg_architecture_value("DEB_HOST_GNU_TYPE") . "-g++";
}
push(@flags, "-DPKG_CONFIG_EXECUTABLE=/usr/bin/" . dpkg_architecture_value("DEB_HOST_GNU_TYPE") . "-pkg-config");
push(@flags, "-DPKGCONFIG_EXECUTABLE=/usr/bin/" . dpkg_architecture_value("DEB_HOST_GNU_TYPE") . "-pkg-config");
}
push(@flags, "-DCMAKE_INSTALL_LIBDIR=lib/" . dpkg_architecture_value("DEB_HOST_MULTIARCH"));
# CMake doesn't respect CPPFLAGS, see #653916.
if ($ENV{CPPFLAGS} && ! compat(8)) {
$ENV{CFLAGS} .= ' ' . $ENV{CPPFLAGS};
$ENV{CXXFLAGS} .= ' ' . $ENV{CPPFLAGS};
}
$this->mkdir_builddir();
eval {
$this->doit_in_builddir("cmake", @flags, @_, $this->get_source_rel2builddir());
};
if (my $err = $@) {
if (-e $this->get_buildpath("CMakeCache.txt")) {
$this->doit_in_builddir('tail', '-v', '-n', '+0', 'CMakeCache.txt');
}
if (-e $this->get_buildpath('CMakeFiles/CMakeOutput.log')) {
$this->doit_in_builddir('tail', '-v', '-n', '+0', 'CMakeFiles/CMakeOutput.log');
}
if (-e $this->get_buildpath('CMakeFiles/CMakeError.log')) {
$this->doit_in_builddir('tail', '-v', '-n', '+0', 'CMakeFiles/CMakeError.log');
}
die $err;
}
}
sub test {
my $this=shift;
my $target = $this->get_targetbuildsystem;
$ENV{CTEST_OUTPUT_ON_FAILURE} = 1;
if ($target->NAME eq 'makefile') {
# 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) ? $this->get_parallel() : 999;
push(@_, "ARGS+=-j$parallel")
}
return $this->SUPER::test(@_);
}
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