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# Copyright 2013-2021 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)
import os
import re
from spack import *
class Flex(AutotoolsPackage):
"""Flex is a tool for generating scanners."""
homepage = "https://github.com/westes/flex"
url = "https://github.com/westes/flex/releases/download/v2.6.1/flex-2.6.1.tar.gz"
tags = ['build-tools']
executables = ['^flex$']
version('2.6.4', sha256='e87aae032bf07c26f85ac0ed3250998c37621d95f8bd748b31f15b33c45ee995')
version('2.6.3', sha256='68b2742233e747c462f781462a2a1e299dc6207401dac8f0bbb316f48565c2aa', preferred=True)
# Avoid flex '2.6.2' (major bug)
# See issue #2554; https://github.com/westes/flex/issues/113
version('2.6.1', sha256='3c43f9e658e45e8aae3cf69fa11803d60550865f023852830d557c5f0623c13b')
version('2.6.0', sha256='cde6e46064a941a3810f7bbc612a2c39cb3aa29ce7eb775089c2515d0adfa7e9')
version('2.5.39', sha256='258d3c9c38cae05932fb470db58b6a288a361c448399e6bda2694ef72a76e7cd')
variant('nls', default=False, description="Enable native language support")
variant('lex', default=True,
description="Provide symlinks for lex and libl")
depends_on('bison', type='build')
depends_on('gettext@0.19:', type='build', when='+nls')
depends_on('gettext@0.19:', type='build', when='@:2.6.0,2.6.4')
depends_on('help2man', type='build', when='@:2.6.0,2.6.4')
depends_on('findutils', type='build')
depends_on('diffutils', type='build')
# Older tarballs don't come with a configure script and the patch for
# 2.6.4 touches configure
depends_on('m4', type='build')
depends_on('autoconf', type='build', when='@:2.6.0,2.6.4')
depends_on('automake', type='build', when='@:2.6.0,2.6.4')
depends_on('libtool', type='build', when='@:2.6.0,2.6.4')
# 2.6.4 fails to compile with newer versions of gcc/glibc, see:
# - https://github.com/spack/spack/issues/8152
# - https://github.com/spack/spack/issues/6942
# - https://github.com/westes/flex/issues/241
patch('https://github.com/westes/flex/commit/24fd0551333e7eded87b64dd36062da3df2f6380.patch', sha256='09c22e5c6fef327d3e48eb23f0d610dcd3a35ab9207f12e0f875701c677978d3', when='@2.6.4')
@classmethod
def determine_version(cls, exe):
output = Executable(exe)('--version', output=str, error=str)
match = re.search(r'flex\s+(\S+)', output)
return match.group(1) if match else None
@classmethod
def determine_variants(cls, exes, version):
results = []
for exe in exes:
variants = ''
path = os.path.dirname(exe)
if 'lex' in os.listdir(path):
variants += "+lex"
else:
variants += "~lex"
results.append(variants)
return results
@when('@:2.6.0,2.6.4')
def autoreconf(self, spec, prefix):
autogen = Executable('./autogen.sh')
autogen()
@property
def force_autoreconf(self):
# The patch for 2.6.4 touches configure
return self.spec.satisfies('@2.6.4')
def url_for_version(self, version):
url = "https://github.com/westes/flex"
if version >= Version('2.6.1'):
url += "/releases/download/v{0}/flex-{0}.tar.gz".format(version)
elif version == Version('2.6.0'):
url += "/archive/v{0}.tar.gz".format(version)
elif version >= Version('2.5.37'):
url += "/archive/flex-{0}.tar.gz".format(version)
else:
url += "/archive/flex-{0}.tar.gz".format(version.dashed)
return url
def configure_args(self):
args = []
args += self.enable_or_disable('nls')
return args
@run_after('install')
def symlink_lex(self):
"""Install symlinks for lex compatibility."""
if self.spec.satisfies('+lex'):
dso = dso_suffix
for dir, flex, lex in \
((self.prefix.bin, 'flex', 'lex'),
(self.prefix.lib, 'libfl.a', 'libl.a'),
(self.prefix.lib, 'libfl.' + dso, 'libl.' + dso),
(self.prefix.lib64, 'libfl.a', 'libl.a'),
(self.prefix.lib64, 'libfl.' + dso, 'libl.' + dso)):
if os.path.isdir(dir):
with working_dir(dir):
if (os.path.isfile(flex) and not os.path.lexists(lex)):
symlink(flex, lex)
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