[wip] draft-292: Minimal mingw build

SConstruct

@@ -10,6 +10,7 @@ supported_platforms = [
     'linux',
     'unix',
     'darwin',
+    'windows',
     'android',
 ]
 
@@ -568,6 +569,8 @@ if not meta.platform:
         meta.platform = 'darwin'
     elif 'gnu' in meta.host:
         meta.platform = 'unix'
+    elif 'mingw' in meta.host:
+        meta.platform = 'windows'
 
 if not meta.platform and meta.host == meta.build:
     if os.name == 'posix':
@@ -757,7 +760,7 @@ if GetOption('override_targets'):
     for t in GetOption('override_targets').split(','):
         env['ROC_TARGETS'] += ['target_' + t]
 else:
-    if meta.platform in ['linux', 'darwin', 'unix']:
+    if meta.platform in ['linux', 'darwin', 'unix', 'windows']:
         env.Append(ROC_TARGETS=[
             'target_pc',
         ])
@@ -789,6 +792,11 @@ else:
             'target_darwin',
         ])
 
+    if meta.platform in ['windows']:
+        env.Append(ROC_TARGETS=[
+            'target_windows',
+        ])
+
     if meta.platform in ['android']:
         env.Append(ROC_TARGETS=[
             'target_android',

scripts/scons_plugin/parsers.py

@@ -55,6 +55,7 @@ def getverstr():
             version_formats = [
                 r'(\b[0-9]+\.[0-9]+\.[0-9]+\b)',
                 r'(\b[0-9]+\.[0-9]+\b)',
+                r'(\b[0-9]+)-win32\b',
             ]
 
             full_text = env.GetCommandOutput(compiler + ' --version')

src/internal_modules/roc_core/target_windows/roc_core/cpu_instructions.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2024 Roc Streaming authors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+//! @file roc_core/target_windows/roc_core/cpu_instructions.h
+//! @brief CPU-specific instructions.
+
+#ifndef ROC_CORE_CPU_INSTRUCTIONS_H_
+#define ROC_CORE_CPU_INSTRUCTIONS_H_
+
+#include "roc_core/stddefs.h"
+
+namespace roc {
+namespace core {
+
+//! CPU pause instruction.
+//! @remarks
+//!  Doesn't include any memory barriers, so the caller is responsible to
+//!  insert them into the loop. Allowed to expand to nothing.
+inline void cpu_relax() {
+    YieldProcessor();
+}
+
+} // namespace core
+} // namespace roc
+
+#endif // ROC_CORE_CPU_INSTRUCTIONS_H_

src/internal_modules/roc_core/target_windows/roc_core/cpu_traits.h

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2024 Roc Streaming authors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+//! @file roc_core/target_windows/roc_core/cpu_traits.h
+//! @brief CPU traits.
+
+#ifndef ROC_CORE_CPU_TRAITS_H_
+#define ROC_CORE_CPU_TRAITS_H_
+
+#include "roc_core/stddefs.h"
+
+//! Values of ROC_CPU_ENDIAN indicating little- or big-endian CPU.
+#define ROC_CPU_BE 1
+#define ROC_CPU_LE 2
+
+// CPU endianess.
+// Assume that windows always runs on little-endian.
+#define ROC_CPU_ENDIAN ROC_CPU_LE
+
+// Detect CPU bitness.
+
+#ifdef _WIN64
+#define ROC_CPU_BITS 64
+#else
+#define ROC_CPU_BITS 32
+#endif
+
+#endif // ROC_CORE_CPU_TRAITS_H_

src/internal_modules/roc_core/target_windows/roc_core/stddefs.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2024 Roc Streaming authors
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+//! @file roc_core/target_windows/roc_core/stddefs.h
+//! @brief Commonly used types and functions.
+
+#ifndef ROC_CORE_STDDEFS_H_
+#define ROC_CORE_STDDEFS_H_
+
+#include <algorithm>
+#include <cctype>
+#include <climits>
+#include <cmath>
+#include <cstdarg>
+#include <cstddef>
+#include <ctime>
+#include <new>
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <windows.h>
+#include <winnt.h>
+
+#endif // ROC_CORE_STDDEFS_H_