# 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 Libtool(AutotoolsPackage):
    """libtool -- library building part of autotools."""

    homepage = 'https://www.gnu.org/software/libtool/'
    url      = 'https://ftpmirror.gnu.org/libtool/libtool-2.4.2.tar.gz'

    version('develop', git='https://git.savannah.gnu.org/git/libtool.git',
            branch='master', submodules=True)
    version('2.4.6', 'addf44b646ddb4e3919805aa88fa7c5e')
    version('2.4.2', 'd2f3b7d4627e69e13514a40e72a24d50')

    depends_on('m4@1.4.6:', type='build')
    depends_on('autoconf', type='build', when='@2.4.2,develop')
    depends_on('automake', type='build', when='@2.4.2,develop')
    depends_on('help2man', type='build', when='@2.4.2,develop')
    depends_on('xz', type='build', when='@develop')
    depends_on('texinfo', type='build', when='@develop')

    # Fix parsing of compiler output when collecting predeps and postdeps
    # http://lists.gnu.org/archive/html/bug-libtool/2016-03/msg00003.html
    patch('flag_space.patch', when='@develop')

    build_directory = 'spack-build'

    @when('@2.4.2,develop')
    def autoreconf(self, spec, prefix):
        Executable('./bootstrap')()

    def _make_executable(self, name):
        return Executable(join_path(self.prefix.bin, name))

    def setup_dependent_environment(self, spack_env, run_env, dependent_spec):
        spack_env.append_path('ACLOCAL_PATH',
                              join_path(self.prefix.share, 'aclocal'))

    def setup_dependent_package(self, module, dependent_spec):
        # Automake is very likely to be a build dependency, so we add
        # the tools it provides to the dependent module. Some build
        # systems differentiate between BSD libtool (e.g., Darwin) and
        # GNU libtool, so also add 'glibtool' and 'glibtoolize' to the
        # list of executables. See Homebrew:
        # https://github.com/Homebrew/homebrew-core/blob/master/Formula/libtool.rb
        executables = ['libtoolize', 'libtool', 'glibtoolize', 'glibtool']
        for name in executables:
            setattr(module, name, self._make_executable(name))

    @run_after('install')
    def post_install(self):
        # Some platforms name GNU libtool and GNU libtoolize
        # 'glibtool' and 'glibtoolize', respectively, to differentiate
        # them from BSD libtool and BSD libtoolize. On these BSD
        # platforms, build systems sometimes expect to use the assumed
        # GNU commands glibtool and glibtoolize instead of the BSD
        # variant; this happens frequently, for instance, on Darwin
        symlink(join_path(self.prefix.bin, 'libtool'),
                join_path(self.prefix.bin, 'glibtool'))
        symlink(join_path(self.prefix.bin, 'libtoolize'),
                join_path(self.prefix.bin, 'glibtoolize'))