meson/compilers.py

# 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
import mesonlib
from coredata import MesonException

"""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', 'moc', 'vapi']
cpp_suffixes = ['cc', 'cpp', 'cxx', 'h', 'hh', 'hpp', 'hxx', 'c++']
c_suffixes = ['c']
clike_suffixes = c_suffixes + cpp_suffixes
obj_suffixes = ['o', 'obj']

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

gnulike_buildtype_args = {'plain' : [],
                           'debug' : ['-g'],
                           'debugoptimized' : ['-O2', '-g'],
                           'release' : ['-O3'],
                           }

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

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 CCompiler():
    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        if type(exelist) == type(''):
            self.exelist = [exelist]
        elif type(exelist) == type([]):
            self.exelist = exelist
        else:
            raise TypeError('Unknown argument to CCompiler')
        self.version = 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_linker_always_args(self):
        return []

    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 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_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):
        return ['-I' + path]

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

    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 sanity_check(self, work_dir):
        source_name = os.path.join(work_dir, 'sanitycheckc.c')
        binary_name = os.path.join(work_dir, 'sanitycheckc')
        ofile = open(source_name, 'w')
        ofile.write('int main(int argc, char **argv) { int class=0; return class; }\n')
        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)
        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):
        templ = '''#include<%s>
int someSymbolHereJustForFun;
'''
        return self.compiles(templ % hname)

    def compiles(self, code):
        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()
        commands = self.get_exelist()
        commands += self.get_compile_only_args()
        commands.append(srcname)
        p = subprocess.Popen(commands, cwd=os.path.split(srcname)[0], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        p.communicate()
        os.remove(srcname)
        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 run(self, 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.append(srcname)
        commands += self.get_output_args(exename)
        p = subprocess.Popen(commands, cwd=os.path.split(srcname)[0], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        p.communicate()
        os.remove(srcname)
        if p.returncode != 0:
            return RunResult(False)
        if self.is_cross:
            cmdlist = self.exe_wrapper + [exename]
        else:
            cmdlist = exename
        pe = subprocess.Popen(cmdlist, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        (so, se) = pe.communicate()
        os.remove(exename)
        return RunResult(True, pe.returncode, so.decode(), se.decode())

    def sizeof(self, element, prefix, env):
        templ = '''#include<stdio.h>
%s

int main(int argc, char **argv) {
    printf("%%ld\\n", (long)(sizeof(%s)));
    return 0;
};
'''
        varname = 'sizeof ' + element
        varname = varname.replace(' ', '_')
        if self.is_cross:
            val = env.cross_info.get(varname)
            if val is not None:
                if isinstance(val, int):
                    return val
                raise EnvironmentException('Cross variable {0} is not an integer.'.format(varname))
        cross_failed = False
        try:
            res = self.run(templ % (prefix, element))
        except CrossNoRunException:
            cross_failed = True
        if cross_failed:
            message = '''Can not determine size of {0} because cross compiled binaries are not runnable.
Please define the corresponding variable {1} in your cross compilation definition file.'''.format(element, varname)
            raise EnvironmentException(message)
        if not res.compiled:
            raise EnvironmentException('Could not compile sizeof test.')
        if res.returncode != 0:
            raise EnvironmentException('Could not run sizeof test binary.')
        return int(res.stdout)

    def alignment(self, typename, env):
        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;
}
'''
        varname = 'alignment ' + typename
        varname = varname.replace(' ', '_')
        if self.is_cross:
            val = env.cross_info.get(varname)
            if val is not None:
                if isinstance(val, int):
                    return val
                raise EnvironmentException('Cross variable {0} is not an integer.'.format(varname))
        cross_failed = False
        try:
            res = self.run(templ % typename)
        except CrossNoRunException:
            cross_failed = True
        if cross_failed:
            message = '''Can not determine alignment of {0} because cross compiled binaries are not runnable.
Please define the corresponding variable {1} in your cross compilation definition file.'''.format(typename, varname)
            raise EnvironmentException(message)
        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):
        # This fails (returns true) if funcname is a ptr or a variable.
        # The correct check is a lot more difficult.
        # Fix this to do that eventually.
        templ = '''%s
int main(int argc, char **argv) {
    void *ptr = (void*)(%s);
    return 0;
};
'''
        varname = 'has function ' + funcname
        varname = varname.replace(' ', '_')
        if self.is_cross:
            val = env.cross_info.get(varname)
            if val is not None:
                if isinstance(val, bool):
                    return val
                raise EnvironmentException('Cross variable {0} is not an boolean.'.format(varname))
        return self.compiles(templ % (prefix, funcname))

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

    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()
        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)
        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():
    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 Mono compiler')
        self.version = version
        self.language = 'cs'
        self.default_suffix = 'cs'
        self.id = 'mono'
        self.monorunner = 'mono'

    def get_always_args(self):
        return []

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

    def get_linker_always_args(self):
        return []

    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 has_header(self, hname):
        raise EnvironmentException('Mono does not support header checks.')

    def compiles(self, code):
        raise EnvironmentException('Mono does not support compile checks.')

    def run(self, code):
        raise EnvironmentException('Mono does not support run checks.')

    def sizeof(self, element, prefix, env):
        raise EnvironmentException('Mono does not support sizeof checks.')

    def alignment(self, typename, env):
        raise EnvironmentException('Mono does not support alignment checks.')

    def has_function(self, funcname, prefix, env):
        raise EnvironmentException('Mono does not support function checks.')

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

class JavaCompiler():
    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 JavaCompiler')
        self.version = version
        self.language = 'java'
        self.default_suffix = 'java'
        self.id = 'unknown'
        self.javarunner = 'java'

    def get_always_args(self):
        return []

    def get_linker_always_args(self):
        return []

    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

    def has_header(self, hname):
        raise EnvironmentException('Java does not support header checks.')

    def compiles(self, code):
        raise EnvironmentException('Java does not support compile checks.')

    def run(self, code):
        raise EnvironmentException('Java does not support run checks.')

    def sizeof(self, element, prefix, env):
        raise EnvironmentException('Java does not support sizeof checks.')

    def alignment(self, typename, env):
        raise EnvironmentException('Java does not support alignment checks.')

    def has_function(self, funcname, prefix, env):
        raise EnvironmentException('Java does not support function checks.')

class ValaCompiler():
    def __init__(self, exelist, version):
        if isinstance(exelist, str):
            self.exelist = [exelist]
        elif type(exelist) == type([]):
            self.exelist = exelist
        else:
            raise TypeError('Unknown argument to Vala compiler')
        self.version = version
        self.id = 'unknown'
        self.language = 'vala'

    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, fname):
        return fname.endswith('.vala') or fname.endswith('.vapi')

class RustCompiler():
    def __init__(self, exelist, version):
        if isinstance(exelist, str):
            self.exelist = [exelist]
        elif type(exelist) == type([]):
            self.exelist = exelist
        else:
            raise TypeError('Unknown argument to Rust compiler')
        self.version = version
        self.id = 'unknown'
        self.language = 'rust'

    def needs_static_linker(self):
        return False

    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 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

    def get_always_args(self):
        return self.always_args

    def get_std_warn_args(self):
        return self.std_warn_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_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_pic_args(self):
        return ['/LD']

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

    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 []

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

    def thread_link_flags(self):
        return []

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'

    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())

GCC_STANDARD = 0
GCC_OSX = 1
GCC_MINGW = 2

def get_gcc_soname_args(gcc_type, shlib_name, path, soversion):
    if soversion is None:
        sostr = ''
    else:
        sostr = '.' + soversion
    if gcc_type == GCC_STANDARD:
        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 impelented yet.')

class GnuCCompiler(CCompiler):
    std_warn_args = []
    old_warn = ['-Wall', '-pedantic', '-Winvalid-pch']
    new_warn = ['-Wall', '-Wpedantic', '-Winvalid-pch']

    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
        if mesonlib.version_compare(version, ">=4.9.0"):
            GnuCCompiler.std_warn_args= GnuCCompiler.new_warn
        else:
            GnuCCompiler.std_warn_args = GnuCCompiler.old_warn

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

    def get_std_warn_args(self):
        return GnuCCompiler.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 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] == 's' # Gcc can do asm, too.

class GnuObjCCompiler(ObjCCompiler):
    std_warn_args = ['-Wall', '-Wpedantic', '-Winvalid-pch']

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

    def get_std_warn_args(self):
        return GnuObjCCompiler.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 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_warn_args = ['-Wall', '-Wpedantic', '-Winvalid-pch']
    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'

    def get_std_warn_args(self):
        return GnuObjCPPCompiler.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 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, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper)
        self.id = 'clang'

class ClangObjCPPCompiler(GnuObjCPPCompiler):
    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
        super().__init__(exelist, version, is_cross, exe_wrapper)
        self.id = 'clang'

class ClangCCompiler(CCompiler):
    std_warn_args = ['-Wall', '-Wpedantic', '-Winvalid-pch']

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

    def get_std_warn_args(self):
        return ClangCCompiler.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 get_pch_suffix(self):
        return 'pch'

    def can_compile(self, filename):
        return super().can_compile(filename) or filename.split('.')[-1] == '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))]


class GnuCPPCompiler(CPPCompiler):
    std_warn_args = []
    new_warn = ['-Wall', '-Wpedantic', '-Winvalid-pch', '-Wnon-virtual-dtor']
    old_warn = ['-Wall', '-pedantic', '-Winvalid-pch', '-Wnon-virtual-dtor']
    # 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
        if mesonlib.version_compare(version, ">=4.9.0"):
            GnuCPPCompiler.std_warn_args= GnuCPPCompiler.new_warn
        else:
            GnuCPPCompiler.std_warn_args = GnuCPPCompiler.old_warn

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

    def get_std_warn_args(self):
        return GnuCPPCompiler.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 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 ClangCPPCompiler(CPPCompiler):
    std_warn_args = ['-Wall', '-Wpedantic', '-Winvalid-pch', '-Wnon-virtual-dtor']

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

    def get_std_warn_args(self):
        return ClangCPPCompiler.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 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))]

class FortranCompiler():
    std_warn_args = ['-Wall']

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

    def get_id(self):
        return self.id

    def get_exelist(self):
        return self.exelist

    def get_language(self):
        return self.language

    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_always_args(self):
        return ['-pipe']

    def get_linker_always_args(self):
        return []

    def get_std_warn_args(self):
        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):
        return ['-I' + path]

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

    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'

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'

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]

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_std_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 get_always_args(self):
        return []

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

    def get_std_warn_args(self):
        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 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_std_warn_args(self):
        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 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_std_warn_args(self):
        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 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_std_warn_args(self):
        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_std_warn_args(self):
        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 []

class ArLinker():
    std_args = ['csr']

    def __init__(self, exelist):
        self.exelist = exelist
        self.id = 'ar'

    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 []