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# 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 *
import os
class Flang(CMakePackage):
"""Flang is a Fortran compiler targeting LLVM."""
homepage = "https://github.com/flang-compiler/flang"
url = "https://github.com/flang-compiler/flang/archive/flang_20180612.tar.gz"
git = "https://github.com/flang-compiler/flang.git"
version('develop', branch='master')
version('20180921', '4440ed5fdc390e4b7a085fb77b44ac54')
version('20180612', '62284e26214eaaff261a922c67f6878c')
depends_on('llvm@flang-develop', when='@develop')
depends_on('llvm@flang-20180921', when='@20180921 target=x86_64:')
depends_on('llvm@flang-20180612', when='@20180612 target=x86_64:')
depends_on('llvm@flang-20180921', when='@20180921 target=aarch64:')
# LLVM version specific to OpenPOWER.
depends_on('llvm@flang-ppc64le-20180921', when='@20180921 target=ppc64le:')
depends_on('llvm@flang-ppc64le-20180612', when='@20180612 target=ppc64le:')
depends_on('pgmath@develop', when='@develop')
depends_on('pgmath@20180921', when='@20180921')
depends_on('pgmath@20180612', when='@20180612')
def cmake_args(self):
options = [
'-DWITH_WERROR=OFF',
'-DCMAKE_C_COMPILER=%s' % os.path.join(
self.spec['llvm'].prefix.bin, 'clang'),
'-DCMAKE_CXX_COMPILER=%s' % os.path.join(
self.spec['llvm'].prefix.bin, 'clang++'),
'-DCMAKE_Fortran_COMPILER=%s' % os.path.join(
self.spec['llvm'].prefix.bin, 'flang'),
'-DFLANG_LIBOMP=%s' % find_libraries(
'libomp', root=self.spec['llvm'].prefix.lib)
]
return options
@run_after('install')
def post_install(self):
# we are installing flang in a path different from llvm, so we
# create a wrapper with -L for e.g. libflangrti.so and -I for
# e.g. iso_c_binding.mod. -B is needed to help flang to find
# flang1 and flang2. rpath_arg is needed so that executables
# generated by flang can find libflang later.
flang = os.path.join(self.spec.prefix.bin, 'flang')
with open(flang, 'w') as out:
out.write('#!/bin/bash\n')
out.write(
'{0} -I{1} -L{2} -L{3} {4}{5} {6}{7} -B{8} "$@"\n'.format(
self.spec['llvm'].prefix.bin.flang,
self.prefix.include, self.prefix.lib,
self.spec['pgmath'].prefix.lib,
self.compiler.fc_rpath_arg, self.prefix.lib,
self.compiler.fc_rpath_arg,
self.spec['pgmath'].prefix.lib, self.spec.prefix.bin))
out.close()
chmod = which('chmod')
chmod('+x', flang)
def setup_environment(self, spack_env, run_env):
# to find llvm's libc++.so
spack_env.set('LD_LIBRARY_PATH', self.spec['llvm'].prefix.lib)
run_env.set('FC', join_path(self.spec.prefix.bin, 'flang'))
run_env.set('F77', join_path(self.spec.prefix.bin, 'flang'))
run_env.set('F90', join_path(self.spec.prefix.bin, 'flang'))
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