compilers: Move clike into a mixins directory

The compilers module is rather large and confusing, with spaghetti
dependencies going every which way. I'm planning to start breaking out
the internal representations into a mixins submodule, for things that
shouldn't be required outside of the compilers module itself.

mesonbuild/compilers/c.py

@@ -18,7 +18,7 @@ import typing
 from .. import coredata
 from ..mesonlib import MachineChoice, MesonException, mlog, version_compare
 from .c_function_attributes import C_FUNC_ATTRIBUTES
-from .clike import CLikeCompiler
+from .mixins.clike import CLikeCompiler
 
 from .compilers import (
     gnu_winlibs,

mesonbuild/compilers/cpp.py

@@ -37,7 +37,7 @@ from .compilers import (
     VisualStudioLikeCompiler,
 )
 from .c_function_attributes import CXX_FUNC_ATTRIBUTES, C_FUNC_ATTRIBUTES
-from .clike import CLikeCompiler
+from .mixins.clike import CLikeCompiler
 
 def non_msvc_eh_options(eh, args):
     if eh == 'none':

mesonbuild/compilers/fortran.py

@@ -30,7 +30,7 @@ from .compilers import (
     PGICompiler,
     IntelVisualStudioLikeCompiler,
 )
-from .clike import CLikeCompiler
+from .mixins.clike import CLikeCompiler
 from .. import mlog
 
 from mesonbuild.mesonlib import (

mesonbuild/compilers/mixins/clike.py

@@ -29,10 +29,10 @@ import subprocess
 import typing
 from pathlib import Path
 
-from .. import mesonlib
-from ..mesonlib import LibType
-from .. import mlog
-from . import compilers
+from ... import mesonlib
+from ...mesonlib import LibType
+from ... import mlog
+from .. import compilers
 
 class CLikeCompiler:
 

mesonbuild/compilers/objc.py

@@ -17,7 +17,7 @@ import typing
 
 from ..mesonlib import EnvironmentException, MachineChoice
 
-from .clike import CLikeCompiler
+from .mixins.clike import CLikeCompiler
 from .compilers import Compiler, ClangCompiler, GnuCompiler
 
 class ObjCCompiler(CLikeCompiler, Compiler):

mesonbuild/compilers/objcpp.py

@@ -17,7 +17,7 @@ import typing
 
 from ..mesonlib import EnvironmentException, MachineChoice
 
-from .clike import CLikeCompiler
+from .mixins.clike import CLikeCompiler
 from .compilers import Compiler, ClangCompiler, GnuCompiler
 
 class ObjCPPCompiler(CLikeCompiler, Compiler):

setup.py

@@ -31,6 +31,7 @@ packages = ['mesonbuild',
             'mesonbuild.backend',
             'mesonbuild.cmake',
             'mesonbuild.compilers',
+            'mesonbuild.compilers.mixins',
             'mesonbuild.dependencies',
             'mesonbuild.modules',
             'mesonbuild.scripts',