Changed run_target to take command as kwarg and add depends. This makes it behave the same as custom_target.

mesonbuild/backend/backends.py

@@ -92,6 +92,7 @@ class Backend():
         raise RuntimeError('No specified compiler can handle file ' + src)
 
     def get_target_filename(self, target):
+        assert(isinstance(target, (build.BuildTarget, build.CustomTarget)))
         targetdir = self.get_target_dir(target)
         fname = target.get_filename()
         if isinstance(fname, list):
@@ -101,6 +102,9 @@ class Backend():
         filename = os.path.join(targetdir, fname)
         return filename
 
+    def get_target_filename_abs(self, target):
+        return os.path.join(self.environment.get_build_dir(), self.get_target_filename(target))
+
     def get_target_filename_for_linking(self, target):
         # On some platforms (msvc for instance), the file that is used for
         # dynamic linking is not the same as the dynamic library itself. This

mesonbuild/backend/ninjabackend.py

@@ -409,7 +409,16 @@ int dummy;
             else:
                 mlog.debug(str(i))
                 raise MesonException('Unreachable code in generate_run_target.')
+        for i in target.get_dependencies():
+            # FIXME, should not grab element at zero but rather expand all.
+            if isinstance(i, list):
+                i = i[0]
+            fname = i.get_filename()
+            if isinstance(fname, list):
+                fname = fname[0]
+            deps.append(os.path.join(self.get_target_dir(i), fname))
         elem = NinjaBuildElement(self.all_outputs, target.name, 'CUSTOM_COMMAND', deps)
+        elem.add_dep(deps)
         cmd = runnerscript + [self.environment.get_source_dir(), self.environment.get_build_dir(), target.subdir]
         texe = target.command
         try:

mesonbuild/build.py

@@ -937,10 +937,11 @@ class CustomTarget:
         return "@cus"
 
 class RunTarget:
-    def __init__(self, name, command, args, subdir):
+    def __init__(self, name, command, args, dependencies, subdir):
         self.name = name
         self.command = command
         self.args = args
+        self.dependencies = dependencies
         self.subdir = subdir
 
     def get_id(self):
@@ -950,7 +951,7 @@ class RunTarget:
         return self.name
 
     def get_dependencies(self):
-        return []
+        return self.dependencies
 
     def get_generated_sources(self):
         return []

mesonbuild/interpreter.py

@@ -23,11 +23,13 @@ from . import compilers
 from .wrap import wrap
 from . import mesonlib
 
-import os, sys, platform, subprocess, shutil, uuid, re
+import os, sys, subprocess, shutil, uuid, re
 from functools import wraps
 
 import importlib
 
+run_depr_printed = False
+
 class InterpreterException(mesonlib.MesonException):
     pass
 
@@ -473,6 +475,7 @@ class BuildTargetHolder(InterpreterObject):
                              'extract_all_objects' : self.extract_all_objects_method,
                              'get_id': self.get_id_method,
                              'outdir' : self.outdir_method,
+                             'full_path' : self.full_path_method,
                              'private_dir_include' : self.private_dir_include_method,
                              })
 
@@ -483,6 +486,9 @@ class BuildTargetHolder(InterpreterObject):
         return IncludeDirsHolder(build.IncludeDirs('', [], False,
                     [self.interpreter.backend.get_target_private_dir(self.held_object)]))
 
+    def full_path_method(self, args, kwargs):
+        return self.interpreter.backend.get_target_filename_abs(self.held_object)
+
     def outdir_method(self, args, kwargs):
         return self.interpreter.backend.get_target_dir(self.held_object)
 
@@ -514,19 +520,19 @@ class JarHolder(BuildTargetHolder):
         super().__init__(target, interp)
 
 class CustomTargetHolder(InterpreterObject):
-    def __init__(self, object_to_hold):
+    def __init__(self, object_to_hold, interp):
+        super().__init__()
         self.held_object = object_to_hold
+        self.interpreter = interp
+        self.methods.update({'full_path' : self.full_path_method,
+                             })
 
-    def is_cross(self):
-        return self.held_object.is_cross()
-
-    def extract_objects_method(self, args, kwargs):
-        gobjs = self.held_object.extract_objects(args)
-        return GeneratedObjectsHolder(gobjs)
+    def full_path_method(self, args, kwargs):
+        return self.interpreter.backend.get_target_filename_abs(self.held_object)
 
 class RunTargetHolder(InterpreterObject):
-    def __init__(self, name, command, args, subdir):
-        self.held_object = build.RunTarget(name, command, args, subdir)
+    def __init__(self, name, command, args, dependencies, subdir):
+        self.held_object = build.RunTarget(name, command, args, dependencies, subdir)
 
 class Test(InterpreterObject):
     def __init__(self, name, suite, exe, is_parallel, cmd_args, env, should_fail, valgrind_args, timeout, workdir):
@@ -1069,7 +1075,7 @@ class Interpreter():
         for v in invalues:
             if isinstance(v, build.CustomTarget):
                 self.add_target(v.name, v)
-                outvalues.append(CustomTargetHolder(v))
+                outvalues.append(CustomTargetHolder(v, self))
             elif isinstance(v, int) or isinstance(v, str):
                 outvalues.append(v)
             elif isinstance(v, build.Executable):
@@ -1754,16 +1760,32 @@ class Interpreter():
         if len(args) != 1:
             raise InterpreterException('Incorrect number of arguments')
         name = args[0]
-        tg = CustomTargetHolder(build.CustomTarget(name, self.subdir, kwargs))
+        tg = CustomTargetHolder(build.CustomTarget(name, self.subdir, kwargs), self)
         self.add_target(name, tg.held_object)
         return tg
 
-    @noKwargs
     def func_run_target(self, node, args, kwargs):
-        if len(args) < 2:
-            raise InterpreterException('Incorrect number of arguments')
+        global run_depr_printed
+        if len(args) > 1:
+            if not run_depr_printed:
+                mlog.log(mlog.red('DEPRECATION'), 'positional version of run_target is deprecated, use the keyword version instead.')
+                run_depr_printed = True
+            if 'command' in kwargs:
+                raise InterpreterException('Can not have command both in positional and keyword arguments.')
+            all_args = args[1:]
+            deps = []
+        elif len(args) == 1:
+            if not 'command' in kwargs:
+                raise InterpreterException('Missing "command" keyword argument')
+            all_args = kwargs['command']
+            deps = kwargs.get('depends', [])
+            if not isinstance(deps, list):
+                deps = [deps]
+        else:
+            raise InterpreterException('Run_target needs at least one positional argument.')
+
         cleaned_args = []
-        for i in args:
+        for i in all_args:
             try:
                 i = i.held_object
             except AttributeError:
@@ -1772,10 +1794,21 @@ class Interpreter():
                 mlog.debug('Wrong type:', str(i))
                 raise InterpreterException('Invalid argument to run_target.')
             cleaned_args.append(i)
-        name = cleaned_args[0]
-        command = cleaned_args[1]
-        cmd_args = cleaned_args[2:]
-        tg = RunTargetHolder(name, command, cmd_args, self.subdir)
+        name = args[0]
+        if not isinstance(name, str):
+            raise InterpreterException('First argument must be a string.')
+        cleaned_deps = []
+        for d in deps:
+            try:
+                d = d.held_object
+            except AttributeError:
+                pass
+            if not isinstance(d, (build.BuildTarget, build.CustomTarget)):
+                raise InterpreterException('Depends items must be build targets.')
+            cleaned_deps.append(d)
+        command = cleaned_args[0]
+        cmd_args = cleaned_args[1:]
+        tg = RunTargetHolder(name, command, cmd_args, cleaned_deps, self.subdir)
         self.add_target(name, tg.held_object)
         return tg
 

mesonbuild/modules/i18n.py

@@ -26,9 +26,9 @@ class I18nModule:
             raise coredata.MesonException('List of languages empty.')
         extra_args = mesonlib.stringlistify(kwargs.get('args', []))
         potargs = [state.environment.get_build_command(), '--internal', 'gettext', 'pot', packagename] + extra_args
-        pottarget = build.RunTarget(packagename + '-pot', sys.executable, potargs, state.subdir)
+        pottarget = build.RunTarget(packagename + '-pot', sys.executable, potargs, [], state.subdir)
         gmoargs = [state.environment.get_build_command(), '--internal', 'gettext', 'gen_gmo'] + languages
-        gmotarget = build.RunTarget(packagename + '-gmo', sys.executable, gmoargs, state.subdir)
+        gmotarget = build.RunTarget(packagename + '-gmo', sys.executable, gmoargs, [], state.subdir)
         installcmd = [sys.executable,
                       state.environment.get_build_command(),
                       '--internal',

test cases/common/58 run target/converter.py

@@ -0,0 +1,5 @@
+#!/usr/bin/env python3
+
+import sys
+
+open(sys.argv[2], 'wb').write(open(sys.argv[1], 'rb').read())

test cases/common/58 run target/fakeburner.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+import sys
+
+plain_arg = sys.argv[1]
+_, filename, _ = plain_arg.split(':')
+try:
+    content = open(filename, 'rb').read()
+except FileNotFoundError:
+    print('Could not open file. Missing dependency?')
+    sys.exit(1)
+print('File opened, pretending to send it somewhere.')
+print(len(content), 'bytes uploaded')

test cases/common/58 run target/meson.build

@@ -8,5 +8,26 @@ run_target('mycommand', 'scripts/script.sh')
 exe = executable('helloprinter', 'helloprinter.c')
 run_target('runhello', exe, 'argument')
 
+converter = find_program('converter.py')
+
+hex = custom_target('exe.hex',
+  input : exe,
+  output : 'exe.hex',
+  command : [converter, '@INPUT@', '@OUTPUT@',
+  ],
+)
+
+# These emulates the Arduino flasher application. It sandwiches the filename inside
+# a packed argument. Thus we need to declare it manually.
+run_target('upload',
+  command : ['fakeburner.py', 'x:@0@:y'.format(exe.full_path())],
+  depends : exe,
+)
+
+run_target('upload2',
+  command : ['fakeburner.py', 'x:@0@:y'.format(hex.full_path())],
+  depends : hex,
+)
+
 python3 = find_program('python3')
 run_target('py3hi', python3, '-c', 'print("I am Python3.")')