backends: Add Nasm support to Xcode through a custom build rule

1 files changed, 29 insertions, 10 deletions

diff --git a/mesonbuild/backend/backends.py b/mesonbuild/backend/backends.py
index af730f88e..0db5c79af 100644
--- a/mesonbuild/backend/backends.py
+++ b/mesonbuild/backend/backends.py
@@ -2013,6 +2013,34 @@ class Backend:
             env.prepend('PATH', list(extra_paths))
         return env
 
+    def compiler_to_generator_args(self, target: build.BuildTarget,
+                                   compiler: 'Compiler', output: str = '@OUTPUT@',
+                                   depfile: T.Union[str, None] = '@DEPFILE@',
+                                   extras: T.Union[T.List[str], None] = None,
+                                   input: str = '@INPUT@') -> CompilerArgs:
+        '''
+        The VS and Xcode backends need the full set of arguments for making a
+        custom build rule. This is a convenience method to convert a Compiler
+        to its arguments, for later concatenation.
+        '''
+        # FIXME: There are many other args missing
+        commands = self.generate_basic_compiler_args(target, compiler)
+        if depfile:
+            commands += compiler.get_dependency_gen_args(output, depfile)
+        commands += compiler.get_output_args(output)
+        commands += self.get_source_dir_include_args(target, compiler)
+        commands += self.get_build_dir_include_args(target, compiler)
+        commands += compiler.get_compile_only_args()
+        # Add per-target compile args, f.ex, `c_args : ['-DFOO']`. We set these
+        # near the end since these are supposed to override everything else.
+        commands += self.escape_extra_args(target.get_extra_args(compiler.get_language()))
+        # Do not escape this one, it is interpreted by the build system
+        # (Xcode considers these as variables to expand at build time)
+        if extras is not None:
+            commands += extras
+        commands += [input]
+        return commands
+
     def compiler_to_generator(self, target: build.BuildTarget,
                               compiler: 'Compiler',
                               sources: _ALL_SOURCES_TYPE,
@@ -2026,16 +2054,7 @@ class Backend:
         exelist = compiler.get_exelist()
         exe = programs.ExternalProgram(exelist[0])
         args = exelist[1:]
-        # FIXME: There are many other args missing
-        commands = self.generate_basic_compiler_args(target, compiler)
-        commands += compiler.get_dependency_gen_args('@OUTPUT@', '@DEPFILE@')
-        commands += compiler.get_output_args('@OUTPUT@')
-        commands += compiler.get_compile_only_args() + ['@INPUT@']
-        commands += self.get_source_dir_include_args(target, compiler)
-        commands += self.get_build_dir_include_args(target, compiler)
-        # Add per-target compile args, f.ex, `c_args : ['-DFOO']`. We set these
-        # near the end since these are supposed to override everything else.
-        commands += self.escape_extra_args(target.get_extra_args(compiler.get_language()))
+        commands = self.compiler_to_generator_args(target, compiler)
         generator = build.Generator(exe, args + commands.to_native(),
                                     [output_templ], depfile='@PLAINNAME@.d',
                                     depends=depends)