# Copyright 2012-2014 The Meson development team

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import subprocess, os.path
import tempfile
from .import mesonlib
from . import mlog
from .mesonlib import MesonException
from . import coredata

"""This file contains the data files of all compilers Meson knows
about. To support a new compiler, add its information below.
Also add corresponding autodetection code in environment.py."""

header_suffixes = ['h', 'hh', 'hpp', 'hxx', 'H', 'ipp', 'moc', 'vapi']
cpp_suffixes = ['cc', 'cpp', 'cxx', 'h', 'hh', 'hpp', 'ipp', 'hxx', 'c++']
c_suffixes = ['c']
clike_suffixes = c_suffixes + cpp_suffixes
obj_suffixes = ['o', 'obj', 'res']
lib_suffixes = ['a', 'lib', 'dll', 'dylib', 'so']

def is_header(fname):
    if hasattr(fname, 'fname'):
        fname = fname.fname
    suffix = fname.split('.')[-1]
    return suffix in header_suffixes

def is_source(fname):
    if hasattr(fname, 'fname'):
        fname = fname.fname
    suffix = fname.split('.')[-1]
    return suffix in clike_suffixes

def is_object(fname):
    if hasattr(fname, 'fname'):
        fname = fname.fname
    suffix = fname.split('.')[-1]
    return suffix in obj_suffixes

def is_library(fname):
    if hasattr(fname, 'fname'):
        fname = fname.fname
    suffix = fname.split('.')[-1]
    return suffix in lib_suffixes

gnulike_buildtype_args = {'plain' : [],
                          # -O0 is passed for improved debugging information with gcc
                          # See https://github.com/mesonbuild/meson/pull/509
                          'debug' : ['-O0', '-g'],
                          'debugoptimized' : ['-O2', '-g'],
                          'release' : ['-O3']}

msvc_buildtype_args = {'plain' : [],
                       'debug' : ["/MDd", "/ZI", "/Ob0", "/Od", "/RTC1"],
                       'debugoptimized' : ["/MD", "/Zi", "/O2", "/Ob1"],
                       'release' : ["/MD", "/O2", "/Ob2"]}

gnulike_buildtype_linker_args = {}


if mesonlib.is_osx():
    gnulike_buildtype_linker_args.update({'plain' : [],
                                          'debug' : [],
                                          'debugoptimized' : [],
                                          'release' : [],
                                         })
else:
    gnulike_buildtype_linker_args.update({'plain' : [],
                                          'debug' : [],
                                          'debugoptimized' : [],
                                          'release' : ['-Wl,-O1'],
                                         })

msvc_buildtype_linker_args = {'plain' : [],
                              'debug' : [],
                              'debugoptimized' : [],
                              'release' : []}

java_buildtype_args = {'plain' : [],
                       'debug' : ['-g'],
                       'debugoptimized' : ['-g'],
                       'release' : []}

rust_buildtype_args = {'plain' : [],
                       'debug' : ['-g'],
                       'debugoptimized' : ['-g', '--opt-level', '2'],
                       'release' : ['--opt-level', '3']}

mono_buildtype_args = {'plain' : [],
                       'debug' : ['-debug'],
                       'debugoptimized': ['-debug', '-optimize+'],
                       'release' : ['-optimize+']}

swift_buildtype_args = {'plain' : [],
                        'debug' : ['-g'],
                        'debugoptimized': ['-g', '-O'],
                        'release' : ['-O']}

gnu_winlibs = ['-lkernel32', '-luser32', '-lgdi32', '-lwinspool', '-lshell32',
               '-lole32', '-loleaut32', '-luuid', '-lcomdlg32', '-ladvapi32']

msvc_winlibs = ['kernel32.lib', 'user32.lib', 'gdi32.lib',
                'winspool.lib', 'shell32.lib', 'ole32.lib', 'oleaut32.lib',
                'uuid.lib', 'comdlg32.lib', 'advapi32.lib']


base_options = {
                'b_pch': coredata.UserBooleanOption('b_pch', 'Use precompiled headers', False),
                'b_lto': coredata.UserBooleanOption('b_lto', 'Use link time optimization', False),
                'b_sanitize': coredata.UserComboOption('b_sanitize',
                                                       'Code sanitizer to use',
                                                       ['none', 'address', 'thread', 'undefined', 'memory'],
                                                       'none'),
                'b_lundef': coredata.UserBooleanOption('b_lundef', 'Use -Wl,--no-undefined when linking', True),
                'b_pgo': coredata.UserComboOption('b_pgo', 'Use profile guide optimization',
                                                  ['off', 'generate', 'use'],
                                                  'off'),
                'b_coverage': coredata.UserBooleanOption('b_coverage',
                                                         'Enable coverage tracking.',
                                                         False),
                }

def sanitizer_compile_args(value):
    if value == 'none':
        return []
    args = ['-fsanitize=' + value]
    if value == 'address':
        args.append('-fno-omit-frame-pointer')
    return args

def sanitizer_link_args(value):
    if value == 'none':
        return []
    args = ['-fsanitize=' + value]
    return args

def get_base_compile_args(options, compiler):
    args = []
    # FIXME, gcc/clang specific.
    try:
        if options['b_lto'].value:
            args.append('-flto')
    except KeyError:
        pass
    try:
        args += sanitizer_compile_args(options['b_sanitize'].value)
    except KeyError:
        pass
    try:
        pgo_val = options['b_pgo'].value
        if pgo_val == 'generate':
            args.append('-fprofile-generate')
        elif pgo_val == 'use':
            args.append('-fprofile-use')
    except KeyError:
        pass
    try:
        if options['b_coverage'].value:
            args += compiler.get_coverage_args()
    except KeyError:
        pass
    return args

def get_base_link_args(options, linker):
    args = []
    # FIXME, gcc/clang specific.
    try:
        if options['b_lto'].value:
            args.append('-flto')
    except KeyError:
        pass
    try:
        args += sanitizer_link_args(options['b_sanitize'].value)
    except KeyError:
        pass
    try:
        pgo_val = options['b_pgo'].value
        if pgo_val == 'generate':
            args.append('-fprofile-generate')
        elif pgo_val == 'use':
            args.append('-fprofile-use')
    except KeyError:
        pass
    try:
        if options['b_lundef'].value:
            args.append('-Wl,--no-undefined')
    except KeyError:
        pass
    try:
        if options['b_coverage'].value:
            args += linker.get_coverage_link_args()
    except KeyError:
        pass
    return args

def build_unix_rpath_args(build_dir, rpath_paths, install_rpath):
        if len(rpath_paths) == 0 and len(install_rpath) == 0:
            return []
        paths = ':'.join([os.path.join(build_dir, p) for p in rpath_paths])
        if len(paths) < len(install_rpath):
            padding = 'X'*(len(install_rpath) - len(paths))
            if len(paths) == 0:
                paths = padding
            else:
                paths = paths + ':' + padding
        return ['-Wl,-rpath,' + paths]

class EnvironmentException(MesonException):
    def __init(self, *args, **kwargs):
        Exception.__init__(self, *args, **kwargs)

class CrossNoRunException(MesonException):
    def __init(self, *args, **kwargs):
        Exception.__init__(self, *args, **kwargs)

class RunResult():
    def __init__(self, compiled, returncode=999, stdout='UNDEFINED', stderr='UNDEFINED'):
        self.compiled = compiled
        self.returncode = returncode
        self.stdout = stdout
        self.stderr = stderr

class Compiler():
    def __init__(self, exelist, version):
        if type(exelist) == type(''):
            self.exelist = [exelist]
        elif type(exelist) == type([]):
            self.exelist = exelist
        else:
            raise TypeError('Unknown argument to Compiler')
        self.version = version
        self.base_options = []

    def get_always_args(self):
        return []

    def get_linker_always_args(self):
        return []

    def get_options(self):
        return {} # build afresh every time

    def get_option_compile_args(self, options):
        return []

    def get_option_link_args(self, options):
        return []

    def has_header(self, *args, **kwargs):
        raise EnvironmentException('Language %s does not support header checks.' % self.language)

    def has_header_symbol(self, *args, **kwargs):
        raise EnvironmentException('Language %s does not support header symbol checks.' % self.language)

    def compiles(self, *args, **kwargs):
        raise EnvironmentException('Language %s does not support compile checks.' % self.language)

    def links(self, *args, **kwargs):
        raise EnvironmentException('Language %s does not support link checks.' % self.language)

    def run(self, *args, **kwargs):
        raise EnvironmentException('Language %s does not support run checks.' % self.language)

    def sizeof(self, *args, **kwargs):
        raise EnvironmentException('Language %s does not support sizeof checks.' % self.language)

    def alignment(self, *args, **kwargs):
        raise EnvironmentException('Language %s does not support alignment checks.' % self.language)

    def has_function(self, *args, **kwargs):
        raise EnvironmentException('Language %s does not support function checks.' % self.language)

    def unix_link_flags_to_native(self, args):
        return args

    def unix_compile_flags_to_native(self, args):
        return args

    def find_library(self, libname, extra_dirs):
        raise EnvironmentException('Language {} does not support library finding.'.format(self.language))

    def get_library_dirs(self):
        return []

class CCompiler(Compiler):
    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version)
        self.language = 'c'
        self.default_suffix = 'c'
        self.id = 'unknown'
        self.is_cross = is_cross
        if isinstance(exe_wrapper, str):
            self.exe_wrapper = [exe_wrapper]
        else:
            self.exe_wrapper = exe_wrapper

    def needs_static_linker(self):
        return True # When compiling static libraries, so yes.

    def get_always_args(self):
        return []

    def get_warn_args(self, level):
        return self.warn_args[level]

    def get_soname_args(self, shlib_name, path, soversion):
        return []

    def split_shlib_to_parts(self, fname):
        return (None, fname)

    # The default behaviour is this, override in
    # OSX and MSVC.
    def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
        return build_unix_rpath_args(build_dir, rpath_paths, install_rpath)

    def get_id(self):
        return self.id

    def get_dependency_gen_args(self, outtarget, outfile):
        return ['-MMD', '-MQ', outtarget, '-MF', outfile]

    def depfile_for_object(self, objfile):
        return objfile + '.' + self.get_depfile_suffix()

    def get_depfile_suffix(self):
        return 'd'

    def get_language(self):
        return self.language

    def get_default_suffix(self):
        return self.default_suffix

    def get_exelist(self):
        return self.exelist[:]

    def get_linker_exelist(self):
        return self.exelist[:]

    def get_compile_only_args(self):
        return ['-c']

    def get_no_optimization_args(self):
        return ['-O0']

    def get_output_args(self, target):
        return ['-o', target]

    def get_linker_output_args(self, outputname):
        return ['-o', outputname]

    def get_coverage_args(self):
        return ['--coverage']

    def get_coverage_link_args(self):
        return ['-lgcov']

    def get_werror_args(self):
        return ['-Werror']

    def get_std_exe_link_args(self):
        return []

    def get_include_args(self, path, is_system):
        if path == '':
            path = '.'
        if is_system:
            return ['-isystem', path]
        return ['-I' + path]

    def get_std_shared_lib_link_args(self):
        return ['-shared']

    def get_library_dirs(self):
        output = subprocess.Popen(self.exelist + ['--print-search-dirs'], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
        (stdo, _) = output.communicate()
        stdo = stdo.decode('utf-8')
        for line in stdo.split('\n'):
            if line.startswith('libraries:'):
                libstr = line.split('=', 1)[1]
                return libstr.split(':')
        return []

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        if suffix == 'c' or suffix == 'h':
            return True
        return False

    def get_pic_args(self):
        return ['-fPIC']

    def name_string(self):
        return ' '.join(self.exelist)

    def get_pch_use_args(self, pch_dir, header):
        return ['-include', os.path.split(header)[-1]]

    def get_pch_name(self, header_name):
        return os.path.split(header_name)[-1] + '.' + self.get_pch_suffix()

    def get_linker_search_args(self, dirname):
        return ['-L'+dirname]

    def sanity_check(self, work_dir):
        mlog.debug('Sanity testing C compiler:', ' '.join(self.exelist))
        mlog.debug('Is cross compiler: %s.' % str(self.is_cross))

        source_name = os.path.join(work_dir, 'sanitycheckc.c')
        if self.is_cross:
            binname = 'sanitycheckc_cross'
        else:
            binname = 'sanitycheckc'
        binary_name = os.path.join(work_dir, binname)
        ofile = open(source_name, 'w')
        ofile.write('int main(int argc, char **argv) { int class=0; return class; }\n')
        ofile.close()
        if self.is_cross and self.exe_wrapper is None:
            # Linking cross built apps is painful. You can't really
            # tell if you should use -nostdlib or not and for example
            # on OSX the compiler binary is the same but you need
            # a ton of compiler flags to differentiate between
            # arm and x86_64. So just compile.
            extra_flags = ['-c']
        else:
            extra_flags = []
        cmdlist = self.exelist + extra_flags + [source_name, '-o', binary_name]
        pc = subprocess.Popen(cmdlist, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        (stdo, stde) = pc.communicate()
        stdo = stdo.decode()
        stde = stde.decode()
        mlog.debug('Sanity check compiler command line:', ' '.join(cmdlist))
        mlog.debug('Sanity check compile stdout:')
        mlog.debug(stdo)
        mlog.debug('-----\nSanity check compile stderr:')
        mlog.debug(stde)
        mlog.debug('-----')
        if pc.returncode != 0:
            raise EnvironmentException('Compiler %s can not compile programs.' % self.name_string())
        if self.is_cross:
            if self.exe_wrapper is None:
                # Can't check if the binaries run so we have to assume they do
                return
            cmdlist = self.exe_wrapper + [binary_name]
        else:
            cmdlist = [binary_name]
        mlog.debug('Running test binary command: ' + ' '.join(cmdlist))
        pe = subprocess.Popen(cmdlist)
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by C compiler %s are not runnable.' % self.name_string())

    def has_header(self, hname, extra_args=[]):
        templ = '''#include<%s>
int someSymbolHereJustForFun;
'''
        return self.compiles(templ % hname, extra_args)

    def has_header_symbol(self, hname, symbol, prefix, extra_args=[]):
        templ = '''{2}
#include <{0}>
int main () {{ {1}; }}'''
        # Pass -O0 to ensure that the symbol isn't optimized away
        extra_args += self.get_no_optimization_args()
        return self.compiles(templ.format(hname, symbol, prefix), extra_args)

    def compile(self, code, srcname, extra_args=[]):
        commands = self.get_exelist()
        commands.append(srcname)
        commands += extra_args
        mlog.debug('Running compile:')
        mlog.debug('Command line: ', ' '.join(commands))
        mlog.debug('Code:\n', code)
        p = subprocess.Popen(commands, cwd=os.path.split(srcname)[0], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        (stde, stdo) = p.communicate()
        stde = stde.decode()
        stdo = stdo.decode()
        mlog.debug('Compiler stdout:\n', stdo)
        mlog.debug('Compiler stderr:\n', stde)
        os.remove(srcname)
        return p

    def compiles(self, code, extra_args = []):
        suflen = len(self.default_suffix)
        (fd, srcname) = tempfile.mkstemp(suffix='.'+self.default_suffix)
        os.close(fd)
        ofile = open(srcname, 'w')
        ofile.write(code)
        ofile.close()
        extra_args = extra_args + self.get_compile_only_args()
        p = self.compile(code, srcname, extra_args)
        try:
            trial = srcname[:-suflen] + 'o'
            os.remove(trial)
        except FileNotFoundError:
            pass
        try:
            os.remove(srcname[:-suflen] + 'obj')
        except FileNotFoundError:
            pass
        return p.returncode == 0

    def links(self, code, extra_args = []):
        (fd, srcname) = tempfile.mkstemp(suffix='.'+self.default_suffix)
        os.close(fd)
        (fd, dstname) = tempfile.mkstemp()
        os.close(fd)
        ofile = open(srcname, 'w')
        ofile.write(code)
        ofile.close()
        extra_args = extra_args + self.get_output_args(dstname)
        p = self.compile(code, srcname, extra_args)
        try:
            os.remove(dstname)
        except FileNotFoundError:
            pass
        return p.returncode == 0

    def run(self, code, extra_args=[]):
        mlog.debug('Running code:\n\n', code)
        if self.is_cross and self.exe_wrapper is None:
            raise CrossNoRunException('Can not run test applications in this cross environment.')
        (fd, srcname) = tempfile.mkstemp(suffix='.'+self.default_suffix)
        os.close(fd)
        ofile = open(srcname, 'w')
        ofile.write(code)
        ofile.close()
        exename = srcname + '.exe' # Is guaranteed to be executable on every platform.
        commands = self.get_exelist()
        commands += extra_args
        commands.append(srcname)
        commands += self.get_output_args(exename)
        p = subprocess.Popen(commands, cwd=os.path.split(srcname)[0], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        (stdo, stde) = p.communicate()
        stde = stde.decode()
        stdo = stdo.decode()
        mlog.debug('Compiler stdout:\n', stdo)
        mlog.debug('Compiler stderr:\n', stde)
        os.remove(srcname)
        if p.returncode != 0:
            return RunResult(False)
        if self.is_cross:
            cmdlist = self.exe_wrapper + [exename]
        else:
            cmdlist = exename
        try:
            pe = subprocess.Popen(cmdlist, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        except Exception as e:
            mlog.debug('Could not run: %s (error: %s)\n' % (cmdlist, e))
            return RunResult(False)

        (so, se) = pe.communicate()
        so = so.decode()
        se = se.decode()
        mlog.debug('Program stdout:\n', so)
        mlog.debug('Program stderr:\n', se)
        try:
            os.remove(exename)
        except PermissionError:
            # On Windows antivirus programs and the like hold
            # on to files so they can't be deleted. There's not
            # much to do in this case.
            pass
        return RunResult(True, pe.returncode, so, se)

    def cross_sizeof(self, element, prefix, env, extra_args=[]):
        templ = '''%s
int temparray[%d-sizeof(%s)];
'''
        try:
            extra_args += env.cross_info.config['properties'][self.language + '_args']
        except KeyError:
            pass
        for i in range(1, 1024):
            code = templ % (prefix, i, element)
            if self.compiles(code, extra_args):
                return i
        raise EnvironmentException('Cross checking sizeof overflowed.')

    def sizeof(self, element, prefix, env, extra_args=[]):
        if self.is_cross:
            return self.cross_sizeof(element, prefix, env, extra_args)
        templ = '''#include<stdio.h>
%s

int main(int argc, char **argv) {
    printf("%%ld\\n", (long)(sizeof(%s)));
    return 0;
};
'''
        res = self.run(templ % (prefix, element), extra_args)
        if not res.compiled:
            return -1
        if res.returncode != 0:
            raise EnvironmentException('Could not run sizeof test binary.')
        return int(res.stdout)

    def cross_alignment(self, typename, env, extra_args=[]):
        templ = '''#include<stddef.h>
struct tmp {
  char c;
  %s target;
};

int testarray[%d-offsetof(struct tmp, target)];
'''
        try:
            extra_args += env.cross_info.config['properties'][self.language + '_args']
        except KeyError:
            pass
        for i in range(1, 1024):
            code = templ % (typename, i)
            if self.compiles(code, extra_args):
                return i
        raise EnvironmentException('Cross checking offsetof overflowed.')

    def alignment(self, typename, env, extra_args=[]):
        if self.is_cross:
            return self.cross_alignment(typename, env, extra_args)
        templ = '''#include<stdio.h>
#include<stddef.h>

struct tmp {
  char c;
  %s target;
};

int main(int argc, char **argv) {
  printf("%%d", (int)offsetof(struct tmp, target));
  return 0;
}
'''
        res = self.run(templ % typename, extra_args)
        if not res.compiled:
            raise EnvironmentException('Could not compile alignment test.')
        if res.returncode != 0:
            raise EnvironmentException('Could not run alignment test binary.')
        align = int(res.stdout)
        if align == 0:
            raise EnvironmentException('Could not determine alignment of %s. Sorry. You might want to file a bug.' % typename)
        return align

    def has_function(self, funcname, prefix, env, extra_args=[]):
        # Define the symbol to something else in case it is defined by the
        # includes or defines listed by the user `{0}` or by the compiler.
        # Then, undef the symbol to get rid of it completely.
        templ = '''
        #define {1} meson_disable_define_of_{1}
        {0}
        #undef {1}
        '''

        # Override any GCC internal prototype and declare our own definition for
        # the symbol. Use char because that's unlikely to be an actual return
        # value for a function which ensures that we override the definition.
        templ += '''
        #ifdef __cplusplus
        extern "C"
        #endif
        char {1} ();
        '''

        # glibc defines functions that are not available on Linux as stubs that
        # fail with ENOSYS (such as e.g. lchmod). In this case we want to fail
        # instead of detecting the stub as a valid symbol.
        templ += '''
        #if defined __stub_{1} || defined __stub___{1}
        fail fail fail this function is not going to work
        #endif
        '''

        # And finally the actual function call
        templ += '''
        int
        main ()
        {{
          return {1} ();
        }}'''
        varname = 'has function ' + funcname
        varname = varname.replace(' ', '_')
        if self.is_cross:
            val = env.cross_info.config['properties'].get(varname, None)
            if val is not None:
                if isinstance(val, bool):
                    return val
                raise EnvironmentException('Cross variable {0} is not a boolean.'.format(varname))
        if self.links(templ.format(prefix, funcname), extra_args):
            return True
        # Some functions like alloca() are defined as compiler built-ins which
        # are inlined by the compiler, so test for that instead. Built-ins are
        # special functions that ignore all includes and defines, so we just
        # directly try to link via main().
        # Add -O0 to ensure that the symbol isn't optimized away by the compiler
        extra_args += self.get_no_optimization_args()
        return self.links('int main() {{ {0}; }}'.format('__builtin_' + funcname), extra_args)

    def has_member(self, typename, membername, prefix, extra_args=[]):
        templ = '''%s
void bar() {
    %s foo;
    foo.%s;
};
'''
        return self.compiles(templ % (prefix, typename, membername), extra_args)

    def has_type(self, typename, prefix, extra_args):
        templ = '''%s
void bar() {
    sizeof(%s);
};
'''
        return self.compiles(templ % (prefix, typename), extra_args)

    def find_library(self, libname, extra_dirs):
        # First try if we can just add the library as -l.
        code = '''int main(int argc, char **argv) {
    return 0;
}
        '''
        # Gcc + co seem to prefer builtin lib dirs to -L dirs.
        # Only try to find std libs if no extra dirs specified.
        if len(extra_dirs) == 0:
            args = ['-l' + libname]
            if self.links(code, extra_args=args):
                return args
        # Not found? Try to find the library file itself.
        extra_dirs += self.get_library_dirs()
        suffixes = ['so', 'dylib', 'lib', 'dll', 'a']
        for d in extra_dirs:
            for suffix in suffixes:
                trial = os.path.join(d, 'lib' + libname + '.' + suffix)
                if os.path.isfile(trial):
                    return trial
                trial2 = os.path.join(d, libname + '.' + suffix)
                if os.path.isfile(trial2):
                    return trial2
        return None

    def thread_flags(self):
        return ['-pthread']

    def thread_link_flags(self):
        return ['-pthread']

class CPPCompiler(CCompiler):
    def __init__(self, exelist, version, is_cross, exe_wrap):
        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
        self.language = 'cpp'
        self.default_suffix = 'cpp'

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        if suffix in cpp_suffixes:
            return True
        return False

    def sanity_check(self, work_dir):
        source_name = os.path.join(work_dir, 'sanitycheckcpp.cc')
        binary_name = os.path.join(work_dir, 'sanitycheckcpp')
        ofile = open(source_name, 'w')
        ofile.write('class breakCCompiler;int main(int argc, char **argv) { return 0; }\n')
        ofile.close()
        if self.is_cross and self.exe_wrapper is None:
            # Skipping link because of the same reason as for C.
            # The comment in CCompiler explains why this is done.
            extra_flags = ['-c']
        else:
            extra_flags = []
        cmdlist = self.exelist + extra_flags + [source_name, '-o', binary_name]
        pc = subprocess.Popen(cmdlist, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        (stdo, stde) = pc.communicate()
        stdo = stdo.decode()
        stde = stde.decode()
        mlog.debug('Sanity check compiler command line:', ' '.join(cmdlist))
        mlog.debug('Sanity check compile stdout:')
        mlog.debug(stdo)
        mlog.debug('-----\nSanity check compile stderr:')
        mlog.debug(stde)
        mlog.debug('-----')
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Compiler %s can not compile programs.' % self.name_string())
        if self.is_cross:
            if self.exe_wrapper is None:
                # Can't check if the binaries run so we have to assume they do
                return
            cmdlist = self.exe_wrapper + [binary_name]
        else:
            cmdlist = [binary_name]
        pe = subprocess.Popen(cmdlist)
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by C++ compiler %s are not runnable.' % self.name_string())

class ObjCCompiler(CCompiler):
    def __init__(self, exelist, version, is_cross, exe_wrap):
        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
        self.language = 'objc'
        self.default_suffix = 'm'

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        if suffix == 'm' or suffix == 'h':
            return True
        return False

    def sanity_check(self, work_dir):
        source_name = os.path.join(work_dir, 'sanitycheckobjc.m')
        binary_name = os.path.join(work_dir, 'sanitycheckobjc')
        ofile = open(source_name, 'w')
        ofile.write('#import<stdio.h>\nint main(int argc, char **argv) { return 0; }\n')
        ofile.close()
        pc = subprocess.Popen(self.exelist + [source_name, '-o', binary_name])
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('ObjC compiler %s can not compile programs.' % self.name_string())
        pe = subprocess.Popen(binary_name)
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by ObjC compiler %s are not runnable.' % self.name_string())

class ObjCPPCompiler(CPPCompiler):
    def __init__(self, exelist, version, is_cross, exe_wrap):
        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
        self.language = 'objcpp'
        self.default_suffix = 'mm'

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        if suffix == 'mm' or suffix == 'h':
            return True
        return False

    def sanity_check(self, work_dir):
        source_name = os.path.join(work_dir, 'sanitycheckobjcpp.mm')
        binary_name = os.path.join(work_dir, 'sanitycheckobjcpp')
        ofile = open(source_name, 'w')
        ofile.write('#import<stdio.h>\nclass MyClass;int main(int argc, char **argv) { return 0; }\n')
        ofile.close()
        pc = subprocess.Popen(self.exelist + [source_name, '-o', binary_name])
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('ObjC++ compiler %s can not compile programs.' % self.name_string())
        pe = subprocess.Popen(binary_name)
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by ObjC++ compiler %s are not runnable.' % self.name_string())

class MonoCompiler(Compiler):
    def __init__(self, exelist, version):
        super().__init__(exelist, version)
        self.language = 'cs'
        self.default_suffix = 'cs'
        self.id = 'mono'
        self.monorunner = 'mono'

    def get_output_args(self, fname):
        return ['-out:' + fname]

    def get_link_args(self, fname):
        return ['-r:' + fname]

    def get_soname_args(self, shlib_name, path, soversion):
        return []

    def get_werror_args(self):
        return ['-warnaserror']

    def split_shlib_to_parts(self, fname):
        return (None, fname)

    def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
        return []

    def get_id(self):
        return self.id

    def get_dependency_gen_args(self, outtarget, outfile):
        return []

    def get_language(self):
        return self.language

    def get_default_suffix(self):
        return self.default_suffix

    def get_exelist(self):
        return self.exelist[:]

    def get_linker_exelist(self):
        return self.exelist[:]

    def get_compile_only_args(self):
        return []

    def get_linker_output_args(self, outputname):
        return []

    def get_coverage_args(self):
        return []

    def get_coverage_link_args(self):
        return []

    def get_std_exe_link_args(self):
        return []

    def get_include_args(self, path):
        return []

    def get_std_shared_lib_link_args(self):
        return []

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        if suffix == 'cs':
            return True
        return False

    def get_pic_args(self):
        return []

    def name_string(self):
        return ' '.join(self.exelist)

    def get_pch_use_args(self, pch_dir, header):
        return []

    def get_pch_name(self, header_name):
        return ''

    def sanity_check(self, work_dir):
        src = 'sanity.cs'
        obj = 'sanity.exe'
        source_name = os.path.join(work_dir, src)
        ofile = open(source_name, 'w')
        ofile.write('''public class Sanity {
    static public void Main () {
    }
}
''')
        ofile.close()
        pc = subprocess.Popen(self.exelist + [src], cwd=work_dir)
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Mono compiler %s can not compile programs.' % self.name_string())
        cmdlist = [self.monorunner, obj]
        pe = subprocess.Popen(cmdlist, cwd=work_dir)
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by Mono compiler %s are not runnable.' % self.name_string())

    def needs_static_linker(self):
        return False

    def get_buildtype_args(self, buildtype):
        return mono_buildtype_args[buildtype]

class JavaCompiler(Compiler):
    def __init__(self, exelist, version):
        super().__init__(exelist, version)
        self.language = 'java'
        self.default_suffix = 'java'
        self.id = 'unknown'
        self.javarunner = 'java'

    def get_soname_args(self, shlib_name, path, soversion):
        return []

    def get_werror_args(self):
        return ['-Werror']

    def split_shlib_to_parts(self, fname):
        return (None, fname)

    def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
        return []

    def get_id(self):
        return self.id

    def get_dependency_gen_args(self, outtarget, outfile):
        return []

    def get_language(self):
        return self.language

    def get_default_suffix(self):
        return self.default_suffix

    def get_exelist(self):
        return self.exelist[:]

    def get_linker_exelist(self):
        return self.exelist[:]

    def get_compile_only_args(self):
        return []

    def get_output_args(self, subdir):
        if subdir == '':
            subdir = './'
        return ['-d', subdir, '-s', subdir]

    def get_linker_output_args(self, outputname):
        return []

    def get_coverage_args(self):
        return []

    def get_coverage_link_args(self):
        return []

    def get_std_exe_link_args(self):
        return []

    def get_include_args(self, path):
        return []

    def get_std_shared_lib_link_args(self):
        return []

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        if suffix == 'java':
            return True
        return False

    def get_pic_args(self):
        return []

    def name_string(self):
        return ' '.join(self.exelist)

    def get_pch_use_args(self, pch_dir, header):
        return []

    def get_pch_name(self, header_name):
        return ''

    def get_buildtype_args(self, buildtype):
        return java_buildtype_args[buildtype]

    def sanity_check(self, work_dir):
        src = 'SanityCheck.java'
        obj = 'SanityCheck'
        source_name = os.path.join(work_dir, src)
        ofile = open(source_name, 'w')
        ofile.write('''class SanityCheck {
  public static void main(String[] args) {
    int i;
  }
}
''')
        ofile.close()
        pc = subprocess.Popen(self.exelist + [src], cwd=work_dir)
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Java compiler %s can not compile programs.' % self.name_string())
        cmdlist = [self.javarunner, obj]
        pe = subprocess.Popen(cmdlist, cwd=work_dir)
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by Java compiler %s are not runnable.' % self.name_string())

    def needs_static_linker(self):
        return False

class ValaCompiler(Compiler):
    def __init__(self, exelist, version):
        super().__init__(exelist, version)
        self.version = version
        self.id = 'unknown'
        self.language = 'vala'
        self.is_cross = False

    def name_string(self):
        return ' '.join(self.exelist)

    def needs_static_linker(self):
        return False # Because compiles into C.

    def get_exelist(self):
        return self.exelist

    def get_werror_args(self):
        return ['--fatal-warnings']

    def get_language(self):
        return self.language

    def sanity_check(self, work_dir):
        src = 'valatest.vala'
        source_name = os.path.join(work_dir, src)
        ofile = open(source_name, 'w')
        ofile.write('''class SanityCheck : Object {
}
''')
        ofile.close()
        pc = subprocess.Popen(self.exelist + ['-C', '-c', src], cwd=work_dir)
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Vala compiler %s can not compile programs.' % self.name_string())

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        return suffix in ('vala', 'vapi')

    def get_buildtype_args(self, buildtype):
        if buildtype == 'debug' or buildtype == 'debugoptimized':
            return ['--debug']
        return []

class RustCompiler(Compiler):
    def __init__(self, exelist, version):
        super().__init__(exelist, version)
        self.id = 'unknown'
        self.language = 'rust'

    def needs_static_linker(self):
        return False

    def name_string(self):
        return ' '.join(self.exelist)

    def get_exelist(self):
        return self.exelist

    def get_id(self):
        return self.id

    def get_language(self):
        return self.language

    def sanity_check(self, work_dir):
        source_name = os.path.join(work_dir, 'sanity.rs')
        output_name = os.path.join(work_dir, 'rusttest')
        ofile = open(source_name, 'w')
        ofile.write('''fn main() {
}
''')
        ofile.close()
        pc = subprocess.Popen(self.exelist + ['-o', output_name, source_name], cwd=work_dir)
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Rust compiler %s can not compile programs.' % self.name_string())
        if subprocess.call(output_name) != 0:
            raise EnvironmentException('Executables created by Rust compiler %s are not runnable.' % self.name_string())

    def can_compile(self, fname):
        return fname.endswith('.rs')

    def get_dependency_gen_args(self, outfile):
        return ['--dep-info', outfile]

    def get_buildtype_args(self, buildtype):
        return rust_buildtype_args[buildtype]

class SwiftCompiler(Compiler):
    def __init__(self, exelist, version):
        super().__init__(exelist, version)
        self.version = version
        self.id = 'llvm'
        self.language = 'swift'
        self.is_cross = False

    def get_id(self):
        return self.id

    def get_linker_exelist(self):
        return self.exelist

    def name_string(self):
        return ' '.join(self.exelist)

    def needs_static_linker(self):
        return True

    def get_exelist(self):
        return self.exelist

    def get_werror_args(self):
        return ['--fatal-warnings']

    def get_language(self):
        return self.language

    def get_dependency_gen_args(self, outtarget, outfile):
        return ['-emit-dependencies']

    def depfile_for_object(self, objfile):
        return os.path.splitext(objfile)[0] + '.' + self.get_depfile_suffix()

    def get_depfile_suffix(self):
        return 'd'

    def get_output_args(self, target):
        return ['-o', target]

    def get_linker_output_args(self, target):
        return ['-o', target]

    def get_header_import_args(self, headername):
        return ['-import-objc-header', headername]

    def get_warn_args(self, level):
        return []

    def get_buildtype_args(self, buildtype):
        return swift_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return []

    def get_std_exe_link_args(self):
        return ['-emit-executable']

    def get_module_args(self, modname):
        return ['-module-name', modname]

    def get_mod_gen_args(self):
        return ['-emit-module']

    def build_rpath_args(self, *args):
        return [] # FIXME

    def get_include_args(self, dirname):
        return ['-I' + dirname]

    def get_compile_only_args(self):
        return ['-c']

    def sanity_check(self, work_dir):
        src = 'swifttest.swift'
        source_name = os.path.join(work_dir, src)
        output_name = os.path.join(work_dir, 'swifttest')
        ofile = open(source_name, 'w')
        ofile.write('''1 + 2
''')
        ofile.close()
        pc = subprocess.Popen(self.exelist + ['-emit-executable', '-o', output_name, src], cwd=work_dir)
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Swift compiler %s can not compile programs.' % self.name_string())
        if subprocess.call(output_name) != 0:
            raise EnvironmentException('Executables created by Swift compiler %s are not runnable.' % self.name_string())

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        return suffix in ('swift')

class VisualStudioCCompiler(CCompiler):
    std_warn_args = ['/W3']
    std_opt_args= ['/O2']
    vs2010_always_args = ['/nologo', '/showIncludes']
    vs2013_always_args = ['/nologo', '/showIncludes', '/FS']

    def __init__(self, exelist, version, is_cross, exe_wrap):
        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
        self.id = 'msvc'
        if int(version.split('.')[0]) > 17:
            self.always_args = VisualStudioCCompiler.vs2013_always_args
        else:
            self.always_args = VisualStudioCCompiler.vs2010_always_args
        self.warn_args = {'1': ['/W2'],
                          '2': ['/W3'],
                          '3': ['/w4']}
        self.base_options = ['b_pch'] # FIXME add lto, pgo and the like

    def get_always_args(self):
        return self.always_args

    def get_buildtype_args(self, buildtype):
        return msvc_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return msvc_buildtype_linker_args[buildtype]

    def get_pch_suffix(self):
        return 'pch'

    def get_pch_name(self, header):
        chopped = os.path.split(header)[-1].split('.')[:-1]
        chopped.append(self.get_pch_suffix())
        pchname = '.'.join(chopped)
        return pchname

    def get_pch_use_args(self, pch_dir, header):
        base = os.path.split(header)[-1]
        pchname = self.get_pch_name(header)
        return ['/FI' + base, '/Yu' + base, '/Fp' + os.path.join(pch_dir, pchname)]

    def get_compile_only_args(self):
        return ['/c']

    def get_no_optimization_args(self):
        return ['/Od']

    def get_output_args(self, target):
        if target.endswith('.exe'):
            return ['/Fe' + target]
        return ['/Fo' + target]

    def get_dependency_gen_args(self, outtarget, outfile):
        return []

    def get_linker_exelist(self):
        return ['link'] # FIXME, should have same path as compiler.

    def get_linker_always_args(self):
        return ['/nologo']

    def get_linker_output_args(self, outputname):
        return ['/OUT:' + outputname]

    def get_linker_search_args(self, dirname):
        return ['/LIBPATH:' + dirname]

    def get_pic_args(self):
        return [] # PIC is handled by the loader on Windows

    def get_std_shared_lib_link_args(self):
        return ['/DLL']

    def gen_vs_module_defs_args(self, defsfile):
        if not isinstance(defsfile, str):
            raise RuntimeError('Module definitions file should be str')
        # With MSVC, DLLs only export symbols that are explicitly exported,
        # so if a module defs file is specified, we use that to export symbols
        return ['/DEF:' + defsfile]

    def gen_pch_args(self, header, source, pchname):
        objname = os.path.splitext(pchname)[0] + '.obj'
        return (objname, ['/Yc' + header, '/Fp' + pchname, '/Fo' + objname ])

    def sanity_check(self, work_dir):
        source_name = 'sanitycheckc.c'
        binary_name = 'sanitycheckc'
        ofile = open(os.path.join(work_dir, source_name), 'w')
        ofile.write('int main(int argc, char **argv) { return 0; }\n')
        ofile.close()
        pc = subprocess.Popen(self.exelist + [source_name, '/Fe' + binary_name],
                              stdout=subprocess.DEVNULL,
                              stderr=subprocess.DEVNULL,
                              cwd=work_dir)
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Compiler %s can not compile programs.' % self.name_string())
        pe = subprocess.Popen(os.path.join(work_dir, binary_name))
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by C++ compiler %s are not runnable.' % self.name_string())

    def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
        return []

    def find_library(self, libname, extra_dirs):
        code = '''int main(int argc, char **argv) {
    return 0;
}
        '''
        args = []
        for i in extra_dirs:
            args += self.get_linker_search_args(i)
        args.append(libname + '.lib')
        if self.links(code, extra_args=args):
            return args
        return None

    # FIXME, no idea what these should be.
    def thread_flags(self):
        return []

    def thread_link_flags(self):
        return []

    def get_options(self):
        return {'c_winlibs' : coredata.UserStringArrayOption('c_winlibs',
                                                             'Windows libs to link against.',
                                                             msvc_winlibs)
                }

    def get_option_link_args(self, options):
        return options['c_winlibs'].value[:]

    def unix_link_flags_to_native(self, args):
        result = []
        for i in args:
            if i.startswith('-L'):
                i = '/LIBPATH:' + i[2:]
            # Translate GNU-style -lfoo library name to the import library
            if i.startswith('-l'):
                name = i[2:]
                if name in ('m', 'c'):
                    # With MSVC, these are provided by the C runtime which is
                    # linked in by default
                    continue
                else:
                    i = name + '.lib'
            result.append(i)
        return result

    def unix_compile_flags_to_native(self, args):
        result = []
        for i in args:
            # -mms-bitfields is specific to MinGW-GCC
            if i == '-mms-bitfields':
                continue
            result.append(i)
        return result

    def get_include_args(self, path, is_system):
        if path == '':
            path = '.'
        # msvc does not have a concept of system header dirs.
        return ['-I' + path]

class VisualStudioCPPCompiler(VisualStudioCCompiler):
    def __init__(self, exelist, version, is_cross, exe_wrap):
        VisualStudioCCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
        self.language = 'cpp'
        self.default_suffix = 'cpp'
        self.base_options = ['b_pch'] # FIXME add lto, pgo and the like

    def can_compile(self, filename):
        suffix = filename.split('.')[-1]
        if suffix in cpp_suffixes:
            return True
        return False

    def sanity_check(self, work_dir):
        source_name = 'sanitycheckcpp.cpp'
        binary_name = 'sanitycheckcpp'
        ofile = open(os.path.join(work_dir, source_name), 'w')
        ofile.write('class BreakPlainC;int main(int argc, char **argv) { return 0; }\n')
        ofile.close()
        pc = subprocess.Popen(self.exelist + [source_name, '/Fe' + binary_name],
                              stdout=subprocess.DEVNULL,
                              stderr=subprocess.DEVNULL,
                              cwd=work_dir)
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Compiler %s can not compile programs.' % self.name_string())
        pe = subprocess.Popen(os.path.join(work_dir, binary_name))
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by C++ compiler %s are not runnable.' % self.name_string())

    def get_options(self):
        return {'cpp_eh' : coredata.UserComboOption('cpp_eh',
                                                    'C++ exception handling type.',
                                                    ['none', 'a', 's', 'sc'],
                                                    'sc'),
                'cpp_winlibs' : coredata.UserStringArrayOption('cpp_winlibs',
                                                               'Windows libs to link against.',
                                                               msvc_winlibs)
                }

    def get_option_compile_args(self, options):
        args = []
        std = options['cpp_eh']
        if std.value != 'none':
            args.append('/EH' + std.value)
        return args

    def get_option_link_args(self, options):
        return options['cpp_winlibs'].value[:]

GCC_STANDARD = 0
GCC_OSX = 1
GCC_MINGW = 2

CLANG_STANDARD = 0
CLANG_OSX = 1
CLANG_WIN = 2
# Possibly clang-cl?

def get_gcc_soname_args(gcc_type, shlib_name, path, soversion):
    if soversion is None:
        sostr = ''
    else:
        sostr = '.' + soversion
    if gcc_type == GCC_STANDARD or gcc_type == GCC_MINGW:
        # Might not be correct for mingw but seems to work.
        return ['-Wl,-soname,lib%s.so%s' % (shlib_name, sostr)]
    elif gcc_type == GCC_OSX:
        return ['-install_name', os.path.join(path, 'lib' + shlib_name + '.dylib')]
    else:
        raise RuntimeError('Not implemented yet.')


class GnuCCompiler(CCompiler):
    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None):
        CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
        self.id = 'gcc'
        self.gcc_type = gcc_type
        self.warn_args = {'1': ['-Wall', '-Winvalid-pch'],
                          '2': ['-Wall', '-Wextra', '-Winvalid-pch'],
                          '3' : ['-Wall', '-Wpedantic', '-Wextra', '-Winvalid-pch']}
        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
        if self.gcc_type != GCC_OSX:
            self.base_options.append('b_lundef')

    def get_pic_args(self):
        if self.gcc_type == GCC_MINGW:
            return [] # On Window gcc defaults to fpic being always on.
        return ['-fPIC']

    def get_always_args(self):
        return ['-pipe']

    def get_buildtype_args(self, buildtype):
        return gnulike_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return gnulike_buildtype_linker_args[buildtype]

    def get_pch_suffix(self):
        return 'gch'

    def split_shlib_to_parts(self, fname):
        return (os.path.split(fname)[0], fname)

    def get_soname_args(self, shlib_name, path, soversion):
        return get_gcc_soname_args(self.gcc_type, shlib_name, path, soversion)

    def can_compile(self, filename):
        return super().can_compile(filename) or filename.split('.')[-1].lower() == 's' # Gcc can do asm, too.

    def get_options(self):
        opts = {'c_std' : coredata.UserComboOption('c_std', 'C language standard to use',
                                                   ['none', 'c89', 'c99', 'c11', 'gnu89', 'gnu99', 'gnu11'],
                                                   'none')}
        if self.gcc_type == GCC_MINGW:
            opts.update({
                'c_winlibs': coredata.UserStringArrayOption('c_winlibs', 'Standard Win libraries to link against',
                                                            gnu_winlibs),
                })
        return opts

    def get_option_compile_args(self, options):
        args = []
        std = options['c_std']
        if std.value != 'none':
            args.append('-std=' + std.value)
        return args

    def get_option_link_args(self, options):
        if self.gcc_type == GCC_MINGW:
            return options['c_winlibs'].value
        return []

class GnuObjCCompiler(ObjCCompiler):
    std_opt_args = ['-O2']

    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        ObjCCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
        self.id = 'gcc'
        # Not really correct, but GNU objc is only used on non-OSX non-win. File a bug
        # if this breaks your use case.
        self.gcc_type = GCC_STANDARD
        self.warn_args = {'1': ['-Wall', '-Winvalid-pch'],
                          '2': ['-Wall', '-Wextra', '-Winvalid-pch'],
                          '3' : ['-Wall', '-Wpedantic', '-Wextra', '-Winvalid-pch']}
        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
        if self.gcc_type != GCC_OSX:
            self.base_options.append('b_lundef')

    def get_buildtype_args(self, buildtype):
        return gnulike_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return gnulike_buildtype_linker_args[buildtype]

    def get_pch_suffix(self):
        return 'gch'

    def get_soname_args(self, shlib_name, path, soversion):
        return get_gcc_soname_args(self.gcc_type, shlib_name, path, soversion)

class GnuObjCPPCompiler(ObjCPPCompiler):
    std_opt_args = ['-O2']

    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        ObjCCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
        self.id = 'gcc'
        # Not really correct, but GNU objc is only used on non-OSX non-win. File a bug
        # if this breaks your use case.
        self.gcc_type = GCC_STANDARD
        self.warn_args = {'1': ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor'],
                          '2': ['-Wall', '-Wextra', '-Winvalid-pch', '-Wnon-virtual-dtor'],
                          '3' : ['-Wall', '-Wpedantic', '-Wextra', '-Winvalid-pch', '-Wnon-virtual-dtor']}
        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
        if self.gcc_type != GCC_OSX:
            self.base_options.append('b_lundef')

    def get_buildtype_args(self, buildtype):
        return gnulike_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return gnulike_buildtype_linker_args[buildtype]

    def get_pch_suffix(self):
        return 'gch'

    def get_soname_args(self, shlib_name, path, soversion):
        return get_gcc_soname_args(self.gcc_type, shlib_name, path, soversion)

class ClangObjCCompiler(GnuObjCCompiler):
    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper)
        self.id = 'clang'
        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
        self.clang_type = cltype
        if self.clang_type != CLANG_OSX:
            self.base_options.append('b_lundef')

class ClangObjCPPCompiler(GnuObjCPPCompiler):
    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper)
        self.id = 'clang'
        self.clang_type = cltype
        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
        if self.clang_type != CLANG_OSX:
            self.base_options.append('b_lundef')

class ClangCCompiler(CCompiler):
    def __init__(self, exelist, version, clang_type, is_cross, exe_wrapper=None):
        CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
        self.id = 'clang'
        self.clang_type = clang_type
        self.warn_args = {'1': ['-Wall', '-Winvalid-pch'],
                          '2': ['-Wall', '-Wextra', '-Winvalid-pch'],
                          '3' : ['-Wall', '-Wpedantic', '-Wextra', '-Winvalid-pch']}
        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
        if self.clang_type != CLANG_OSX:
            self.base_options.append('b_lundef')

    def get_buildtype_args(self, buildtype):
        return gnulike_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return gnulike_buildtype_linker_args[buildtype]

    def get_pch_suffix(self):
        return 'pch'

    def can_compile(self, filename):
        return super().can_compile(filename) or filename.split('.')[-1].lower() == 's' # Clang can do asm, too.

    def get_pch_use_args(self, pch_dir, header):
        # Workaround for Clang bug http://llvm.org/bugs/show_bug.cgi?id=15136
        # This flag is internal to Clang (or at least not documented on the man page)
        # so it might change semantics at any time.
        return ['-include-pch', os.path.join (pch_dir, self.get_pch_name (header))]

    def get_options(self):
        return {'c_std' : coredata.UserComboOption('c_std', 'C language standard to use',
                                                   ['none', 'c89', 'c99', 'c11'],
                                                   'none')}

    def get_option_compile_args(self, options):
        args = []
        std = options['c_std']
        if std.value != 'none':
            args.append('-std=' + std.value)
        return args

    def get_option_link_args(self, options):
        return []

class GnuCPPCompiler(CPPCompiler):
    # may need to separate the latter to extra_debug_args or something
    std_debug_args = ['-g']

    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrap):
        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
        self.id = 'gcc'
        self.gcc_type = gcc_type
        self.warn_args = {'1': ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor'],
                          '2': ['-Wall', '-Wextra', '-Winvalid-pch', '-Wnon-virtual-dtor'],
                          '3': ['-Wall', '-Wpedantic', '-Wextra', '-Winvalid-pch', '-Wnon-virtual-dtor']}
        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
        if self.gcc_type != GCC_OSX:
            self.base_options.append('b_lundef')

    def get_always_args(self):
        return ['-pipe']

    def get_buildtype_args(self, buildtype):
        return gnulike_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return gnulike_buildtype_linker_args[buildtype]

    def get_pch_suffix(self):
        return 'gch'

    def get_soname_args(self, shlib_name, path, soversion):
        return get_gcc_soname_args(self.gcc_type, shlib_name, path, soversion)

    def get_options(self):
        opts = {'cpp_std' : coredata.UserComboOption('cpp_std', 'C++ language standard to use',
                                                     ['none', 'c++03', 'c++11', 'c++14'],
                                                     'none')}
        if self.gcc_type == GCC_MINGW:
            opts.update({
                'cpp_winlibs': coredata.UserStringArrayOption('c_winlibs', 'Standard Win libraries to link against',
                                                              gnu_winlibs),
                })
        return opts

    def get_option_compile_args(self, options):
        args = []
        std = options['cpp_std']
        if std.value != 'none':
            args.append('-std=' + std.value)
        return args

    def get_option_link_args(self, options):
        if self.gcc_type == GCC_MINGW:
            return options['cpp_winlibs'].value
        return []

class ClangCPPCompiler(CPPCompiler):
    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
        self.id = 'clang'
        self.warn_args = {'1': ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor'],
                          '2': ['-Wall', '-Wextra', '-Winvalid-pch', '-Wnon-virtual-dtor'],
                          '3': ['-Wall', '-Wpedantic', '-Wextra', '-Winvalid-pch', '-Wnon-virtual-dtor']}
        self.clang_type = cltype
        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
        if self.clang_type != CLANG_OSX:
            self.base_options.append('b_lundef')

    def get_buildtype_args(self, buildtype):
        return gnulike_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return gnulike_buildtype_linker_args[buildtype]

    def get_pch_suffix(self):
        return 'pch'

    def get_pch_use_args(self, pch_dir, header):
        # Workaround for Clang bug http://llvm.org/bugs/show_bug.cgi?id=15136
        # This flag is internal to Clang (or at least not documented on the man page)
        # so it might change semantics at any time.
        return ['-include-pch', os.path.join (pch_dir, self.get_pch_name (header))]

    def get_options(self):
        return {'cpp_std' : coredata.UserComboOption('cpp_std', 'C++ language standard to use',
                                                   ['none', 'c++03', 'c++11', 'c++14'],
                                                   'none')}

    def get_option_compile_args(self, options):
        args = []
        std = options['cpp_std']
        if std.value != 'none':
            args.append('-std=' + std.value)
        return args

    def get_option_link_args(self, options):
        return []

class FortranCompiler(Compiler):
    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version)
        self.is_cross = is_cross
        self.exe_wrapper = exe_wrapper
        self.language = 'fortran'
        # Not really correct but I don't have Fortran compilers to test with. Sorry.
        self.gcc_type = GCC_STANDARD
        self.id = "IMPLEMENTATION CLASSES MUST SET THIS"

    def get_id(self):
        return self.id

    def name_string(self):
        return ' '.join(self.exelist)

    def get_exelist(self):
        return self.exelist

    def get_language(self):
        return self.language

    def get_pic_args(self):
        if self.gcc_type == GCC_MINGW:
            return [] # On Windows gcc defaults to fpic being always on.
        return ['-fPIC']

    def get_std_shared_lib_link_args(self):
        return ['-shared']

    def needs_static_linker(self):
        return True

    def sanity_check(self, work_dir):
        source_name = os.path.join(work_dir, 'sanitycheckf.f90')
        binary_name = os.path.join(work_dir, 'sanitycheckf')
        ofile = open(source_name, 'w')
        ofile.write('''program prog
     print *, "Fortran compilation is working."
end program prog
''')
        ofile.close()
        pc = subprocess.Popen(self.exelist + [source_name, '-o', binary_name])
        pc.wait()
        if pc.returncode != 0:
            raise EnvironmentException('Compiler %s can not compile programs.' % self.name_string())
        if self.is_cross:
            if self.exe_wrapper is None:
                # Can't check if the binaries run so we have to assume they do
                return
            cmdlist = self.exe_wrapper + [binary_name]
        else:
            cmdlist = [binary_name]
        pe = subprocess.Popen(cmdlist, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        pe.wait()
        if pe.returncode != 0:
            raise EnvironmentException('Executables created by Fortran compiler %s are not runnable.' % self.name_string())

    def get_std_warn_args(self, level):
        return FortranCompiler.std_warn_args

    def get_buildtype_args(self, buildtype):
        return gnulike_buildtype_args[buildtype]

    def get_buildtype_linker_args(self, buildtype):
        return gnulike_buildtype_linker_args[buildtype]

    def split_shlib_to_parts(self, fname):
        return (os.path.split(fname)[0], fname)

    def get_soname_args(self, shlib_name, path, soversion):
        return get_gcc_soname_args(self.gcc_type, shlib_name, path, soversion)

    def get_dependency_gen_args(self, outtarget, outfile):
        # Disabled until this is fixed:
        # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62162
        #return ['-cpp', '-MMD', '-MQ', outtarget]
        return []

    def get_output_args(self, target):
        return ['-o', target]

    def get_compile_only_args(self):
        return ['-c']

    def get_linker_exelist(self):
        return self.exelist[:]

    def get_linker_output_args(self, outputname):
        return ['-o', outputname]

    def can_compile(self, src):
        if hasattr(src, 'fname'):
            src = src.fname
        suffix = os.path.splitext(src)[1].lower()
        if suffix == '.f' or suffix == '.f95' or suffix == '.f90':
            return True
        return False

    def get_include_args(self, path, is_system):
        return ['-I' + path]

    def get_module_outdir_args(self, path):
        return ['-J' + path]

    def depfile_for_object(self, objfile):
        return objfile + '.' + self.get_depfile_suffix()

    def get_depfile_suffix(self):
        return 'd'

    def get_std_exe_link_args(self):
        return []

    def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
        return build_unix_rpath_args(build_dir, rpath_paths, install_rpath)

    def module_name_to_filename(self, module_name):
        return module_name.lower() + '.mod'

    def get_warn_args(self, level):
        return ['-Wall']


class GnuFortranCompiler(FortranCompiler):
    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper=None)
        self.gcc_type = gcc_type
        self.id = 'gcc'

    def get_always_args(self):
        return ['-pipe']

class G95FortranCompiler(FortranCompiler):
    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper=None)
        self.id = 'g95'

    def get_module_outdir_args(self, path):
        return ['-fmod='+path]

    def get_always_args(self):
        return ['-pipe']

class SunFortranCompiler(FortranCompiler):
    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper=None)
        self.id = 'sun'

    def get_dependency_gen_args(self, outtarget, outfile):
        return ['-fpp']

    def get_always_args(self):
        return []

    def get_warn_args(self):
        return []

    def get_module_outdir_args(self, path):
        return ['-moddir='+path]

class IntelFortranCompiler(FortranCompiler):
    std_warn_args = ['-warn', 'all']
    
    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper=None)
        self.id = 'intel'
        
    def get_module_outdir_args(self, path):
        return ['-module', path]

    def can_compile(self, src):
        suffix = os.path.splitext(src)[1].lower()
        if suffix == '.f' or suffix == '.f90':
            return True
        return False

    def get_warn_args(self, level):
        return IntelFortranCompiler.std_warn_args

class PathScaleFortranCompiler(FortranCompiler):
    std_warn_args = ['-fullwarn']

    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper=None)
        self.id = 'pathscale'

    def get_module_outdir_args(self, path):
        return ['-module', path]

    def can_compile(self, src):
        suffix = os.path.splitext(src)[1].lower()
        if suffix == '.f' or suffix == '.f90' or suffix == '.f95':
            return True
        return False

    def get_std_warn_args(self, level):
        return PathScaleFortranCompiler.std_warn_args

class PGIFortranCompiler(FortranCompiler):
    std_warn_args = ['-Minform=inform']

    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper=None)
        self.id = 'pgi'

    def get_module_outdir_args(self, path):
        return ['-module', path]

    def can_compile(self, src):
        suffix = os.path.splitext(src)[1].lower()
        if suffix == '.f' or suffix == '.f90' or suffix == '.f95':
            return True
        return False

    def get_warn_args(self, level):
        return PGIFortranCompiler.std_warn_args


class Open64FortranCompiler(FortranCompiler):
    std_warn_args = ['-fullwarn']

    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper=None)
        self.id = 'open64'

    def get_module_outdir_args(self, path):
        return ['-module', path]

    def can_compile(self, src):
        suffix = os.path.splitext(src)[1].lower()
        if suffix == '.f' or suffix == '.f90' or suffix == '.f95':
            return True
        return False

    def get_warn_args(self, level):
        return Open64FortranCompiler.std_warn_args

class NAGFortranCompiler(FortranCompiler):
    std_warn_args = []

    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper=None)
        self.id = 'nagfor'

    def get_module_outdir_args(self, path):
        return ['-mdir', path]

    def get_always_args(self):
        return []

    def can_compile(self, src):
        suffix = os.path.splitext(src)[1].lower()
        if suffix == '.f' or suffix == '.f90' or suffix == '.f95':
            return True
        return False

    def get_warn_args(self, level):
        return NAGFortranCompiler.std_warn_args


class VisualStudioLinker():
    always_args = ['/NOLOGO']
    def __init__(self, exelist):
        self.exelist = exelist

    def get_exelist(self):
        return self.exelist

    def get_std_link_args(self):
        return []

    def get_buildtype_linker_args(self, buildtype):
        return []

    def get_output_args(self, target):
        return ['/OUT:' + target]

    def get_coverage_link_args(self):
        return []

    def get_always_args(self):
        return VisualStudioLinker.always_args

    def get_linker_always_args(self):
        return VisualStudioLinker.always_args

    def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
        return []

    def thread_link_flags(self):
        return []

    def get_option_link_args(self, options):
        return []

    def unix_link_flags_to_native(self, args):
        return args

    def unix_compile_flags_to_native(self, args):
        return args

class ArLinker():

    def __init__(self, exelist):
        self.exelist = exelist
        self.id = 'ar'
        pc = subprocess.Popen(self.exelist + ['-h'], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
        (stdo, _) = pc.communicate()
        # Enable deterministic builds if they are available.
        if b'[D]' in stdo:
            self.std_args = ['csrD']
        else:
            self.std_args = ['csr']

    def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
        return []

    def get_exelist(self):
        return self.exelist

    def get_std_link_args(self):
        return self.std_args

    def get_output_args(self, target):
        return [target]

    def get_buildtype_linker_args(self, buildtype):
        return []

    def get_linker_always_args(self):
        return []

    def get_coverage_link_args(self):
        return []

    def get_always_args(self):
        return []

    def thread_link_flags(self):
        return []

    def get_option_link_args(self, options):
        return []

    def unix_link_flags_to_native(self, args):
        return args

    def unix_compile_flags_to_native(self, args):
        return args
