# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)

from spack import *


class Libpfm4(MakefilePackage):
    """libpfm4 is a userspace library to help
     setup performance events for use with
     the perf_events Linux kernel interface."""

    homepage = "http://perfmon2.sourceforge.net"
    url      = "https://downloads.sourceforge.net/project/perfmon2/libpfm4/libpfm-4.8.0.tar.gz"

    version('4.10.1', 'd8f66cb9bfa7e1434434e0de6409db5b')
    version('4.9.0', '42ad4a2e5b8e1f015310db8535739c73')
    version('4.8.0', '730383896db92e12fb2cc10f2d41dd43')

    # Fails to build libpfm4 with intel compiler version 16 and 17
    conflicts('%intel@16:17')

    # Set default optimization level (-O2) if not specified.
    def flag_handler(self, name, flags):
        if name == 'cflags':
            for flag in flags:
                if flag.startswith('-O'):
                    break
            else:
                flags.append('-O2')

        return (flags, None, None)

    # Remove -Werror from CFLAGS.  Given the large space of platform,
    # compiler, version, we don't want to fail the build over a stray
    # warning.
    def patch(self):
        filter_file('-Werror', '', 'config.mk')

    @property
    def install_targets(self):
        return ['DESTDIR={0}'.format(self.prefix),
                'LIBDIR=/lib',
                'INCDIR=/include',
                'MANDIR=/man',
                'LDCONFIG=true',
                'install']
