compilers: Every compiler can run code

Compiling and linking code is part of the Compiler base class, there is
no reason it cannot also run executables.

docs/markdown/snippets/compiler_run.md

@@ -0,0 +1,4 @@
+## compiler.run() method is now available for all languages
+
+It used to be only implemented for C-like and D languages, but it is now available
+for all languages.

mesonbuild/compilers/compilers.py

@@ -623,10 +623,31 @@ class Compiler(HoldableObject, metaclass=abc.ABCMeta):
                           dependencies: T.Optional[T.List['Dependency']] = None) -> T.Tuple[bool, bool]:
         raise EnvironmentException('Language %s does not support header symbol checks.' % self.get_display_language())
 
-    def run(self, code: 'mesonlib.FileOrString', env: 'Environment', *,
+    def run(self, code: 'mesonlib.FileOrString', env: 'Environment',
             extra_args: T.Union[T.List[str], T.Callable[[CompileCheckMode], T.List[str]], None] = None,
             dependencies: T.Optional[T.List['Dependency']] = None) -> RunResult:
-        raise EnvironmentException('Language %s does not support run checks.' % self.get_display_language())
+        need_exe_wrapper = env.need_exe_wrapper(self.for_machine)
+        if need_exe_wrapper and self.exe_wrapper is None:
+            raise CrossNoRunException('Can not run test applications in this cross environment.')
+        with self._build_wrapper(code, env, extra_args, dependencies, mode=CompileCheckMode.LINK, want_output=True) as p:
+            if p.returncode != 0:
+                mlog.debug(f'Could not compile test file {p.input_name}: {p.returncode}\n')
+                return RunResult(False)
+            if need_exe_wrapper:
+                cmdlist = self.exe_wrapper.get_command() + [p.output_name]
+            else:
+                cmdlist = [p.output_name]
+            try:
+                pe, so, se = mesonlib.Popen_safe(cmdlist)
+            except Exception as e:
+                mlog.debug(f'Could not run: {cmdlist} (error: {e})\n')
+                return RunResult(False)
+
+        mlog.debug('Program stdout:\n')
+        mlog.debug(so)
+        mlog.debug('Program stderr:\n')
+        mlog.debug(se)
+        return RunResult(True, pe.returncode, so, se)
 
     # Caching run() in general seems too risky (no way to know what the program
     # depends on), but some callers know more about the programs they intend to

mesonbuild/compilers/d.py

@@ -9,7 +9,6 @@ import subprocess
 import typing as T
 
 from .. import mesonlib
-from .. import mlog
 from ..arglist import CompilerArgs
 from ..linkers import RSPFileSyntax
 from ..mesonlib import (
@@ -571,32 +570,11 @@ class DCompiler(Compiler):
                 args.append(extra_args)
         return args
 
-    def run(self, code: 'mesonlib.FileOrString', env: 'Environment', *,
+    def run(self, code: 'mesonlib.FileOrString', env: 'Environment',
             extra_args: T.Union[T.List[str], T.Callable[[CompileCheckMode], T.List[str]], None] = None,
             dependencies: T.Optional[T.List['Dependency']] = None) -> compilers.RunResult:
-        need_exe_wrapper = env.need_exe_wrapper(self.for_machine)
-        if need_exe_wrapper and self.exe_wrapper is None:
-            raise compilers.CrossNoRunException('Can not run test applications in this cross environment.')
         extra_args = self._get_compile_extra_args(extra_args)
-        with self._build_wrapper(code, env, extra_args, dependencies, mode=CompileCheckMode.LINK, want_output=True) as p:
-            if p.returncode != 0:
-                mlog.debug(f'Could not compile test file {p.input_name}: {p.returncode}\n')
-                return compilers.RunResult(False)
-            if need_exe_wrapper:
-                cmdlist = self.exe_wrapper.get_command() + [p.output_name]
-            else:
-                cmdlist = [p.output_name]
-            try:
-                pe, so, se = mesonlib.Popen_safe(cmdlist)
-            except Exception as e:
-                mlog.debug(f'Could not run: {cmdlist} (error: {e})\n')
-                return compilers.RunResult(False)
-
-        mlog.debug('Program stdout:\n')
-        mlog.debug(so)
-        mlog.debug('Program stderr:\n')
-        mlog.debug(se)
-        return compilers.RunResult(True, pe.returncode, so, se)
+        return super().run(code, env, extra_args, dependencies)
 
     def sizeof(self, typename: str, prefix: str, env: 'Environment', *,
                extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]] = None,

mesonbuild/compilers/mixins/clike.py

@@ -459,32 +459,6 @@ class CLikeCompiler(Compiler):
         args = cargs + extra_args + largs
         return args
 
-    def run(self, code: 'mesonlib.FileOrString', env: 'Environment', *,
-            extra_args: T.Union[T.List[str], T.Callable[[CompileCheckMode], T.List[str]], None] = None,
-            dependencies: T.Optional[T.List['Dependency']] = None) -> compilers.RunResult:
-        need_exe_wrapper = env.need_exe_wrapper(self.for_machine)
-        if need_exe_wrapper and self.exe_wrapper is None:
-            raise compilers.CrossNoRunException('Can not run test applications in this cross environment.')
-        with self._build_wrapper(code, env, extra_args, dependencies, mode=CompileCheckMode.LINK, want_output=True) as p:
-            if p.returncode != 0:
-                mlog.debug(f'Could not compile test file {p.input_name}: {p.returncode}\n')
-                return compilers.RunResult(False)
-            if need_exe_wrapper:
-                cmdlist = self.exe_wrapper.get_command() + [p.output_name]
-            else:
-                cmdlist = [p.output_name]
-            try:
-                pe, so, se = mesonlib.Popen_safe(cmdlist)
-            except Exception as e:
-                mlog.debug(f'Could not run: {cmdlist} (error: {e})\n')
-                return compilers.RunResult(False)
-
-        mlog.debug('Program stdout:\n')
-        mlog.debug(so)
-        mlog.debug('Program stderr:\n')
-        mlog.debug(se)
-        return compilers.RunResult(True, pe.returncode, so, se)
-
     def _compile_int(self, expression: str, prefix: str, env: 'Environment',
                      extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]],
                      dependencies: T.Optional[T.List['Dependency']]) -> bool:

mesonbuild/interpreter/compiler.py

@@ -302,6 +302,9 @@ class CompilerHolder(ObjectHolder['Compiler']):
     @typed_pos_args('compiler.run', (str, mesonlib.File))
     @typed_kwargs('compiler.run', *_COMPILES_KWS)
     def run_method(self, args: T.Tuple['mesonlib.FileOrString'], kwargs: 'CompileKW') -> 'RunResult':
+        if self.compiler.language not in {'d', 'c', 'cpp', 'objc', 'objcpp'}:
+            FeatureNew.single_use(f'compiler.run for {self.compiler.get_display_language()} language',
+                                  '1.5.0', self.subproject, location=self.current_node)
         code = args[0]
         if isinstance(code, mesonlib.File):
             self.interpreter.add_build_def_file(code)

test cases/rust/1 basic/meson.build

@@ -18,3 +18,6 @@ test(
   ),
   should_fail : true,
 )
+
+rustc = meson.get_compiler('rust')
+assert(rustc.run('fn main(){}').returncode() == 0)