windows: Add support for build variants to windows port.

Following the unix port.

Support for building variants with msvc was done by @stinos.

ports/windows/Makefile

@@ -1,11 +1,27 @@
+# Select the variant to build for.
+VARIANT ?= standard
+
+# If the build directory is not given, make it reflect the variant name.
+BUILD ?= build-$(VARIANT)
+
+VARIANT_DIR ?= variants/$(VARIANT)
+ifeq ($(wildcard $(VARIANT_DIR)/.),)
+$(error Invalid VARIANT specified: $(VARIANT_DIR))
+endif
+
 include ../../py/mkenv.mk
 -include mpconfigport.mk
+include $(VARIANT_DIR)/mpconfigvariant.mk
 
-# define main target
+FROZEN_MANIFEST ?= variants/manifest.py
-PROG = micropython
+
+# Define main target
+# This should be configured by the mpconfigvariant.mk
+PROG ?= micropython
 
 # qstr definitions (must come before including py.mk)
 QSTR_DEFS = ../unix/qstrdefsport.h
+QSTR_GLOBAL_DEPENDENCIES = $(VARIANT_DIR)/mpconfigvariant.h
 
 # include py core make definitions
 include $(TOP)/py/py.mk
@@ -13,6 +29,7 @@ include $(TOP)/py/py.mk
 INC += -I.
 INC += -I$(TOP)
 INC += -I$(BUILD)
+INC += -I$(VARIANT_DIR)
 
 # compiler settings
 CFLAGS = $(INC) -Wall -Wpointer-arith -Wdouble-promotion -Werror -std=gnu99 -DUNIX -D__USE_MINGW_ANSI_STDIO=1 $(CFLAGS_MOD) $(COPT) $(CFLAGS_EXTRA)
@@ -41,7 +58,8 @@ SRC_C = \
 	init.c \
 	sleep.c \
 	fmode.c \
-	$(SRC_MOD)
+	$(SRC_MOD) \
+	$(wildcard $(VARIANT_DIR)/*.c)
 
 OBJ = $(PY_O) $(addprefix $(BUILD)/, $(SRC_C:.c=.o))
 

ports/windows/README.md

@@ -71,6 +71,26 @@ To build from the command line:
     msbuild ../../mpy-cross/mpy-cross.vcxproj
     msbuild micropython.vcxproj
 
+__Variants__
+
+The msvc port supports variants (like the unix and windows mingw ports) and the one which gets built is
+controlled by the `PyVariant` msbuild property. It defaults to `standard`.
+The other variants can be built like:
+
+    msbuild micropython.vcxproj /p:PyVariant=dev
+
+Or by adding a file [Directory.build.props](https://docs.microsoft.com/en-us/visualstudio/msbuild/customize-your-build#directorybuildprops-and-directorybuildtargets) in this directory or a parent directory:
+
+```xml
+<Project>
+  <PropertyGroup>
+    <PyVariant>dev</PyVariant>
+  </PropertyGroup>
+</Project>
+```
+
+See [paths.props](msvc/paths.props) for other related variables like build and variant directories.
+
 __Stack usage__
 
 The msvc compiler is quite stack-hungry which might result in a "maximum recursion depth exceeded"

ports/windows/micropython.vcxproj

@@ -64,6 +64,7 @@
   </ImportGroup>
   <PropertyGroup Label="UserMacros">
     <CustomPropsFile Condition="'$(CustomPropsFile)'==''">msvc/user.props</CustomPropsFile>
+    <TargetName>$(PyProg)</TargetName>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile />
@@ -95,6 +96,7 @@
     <ClCompile Include="$(PyBaseDir)ports\unix\modos.c"/>
     <ClCompile Include="$(PyBaseDir)ports\unix\modtime.c"/>
     <ClCompile Include="$(PyBaseDir)ports\unix\modmachine.c" />
+    <ClCompile Include="$(PyVariantDir)*.c" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="@(PyCoreInclude)" />

ports/windows/mpconfigport.h

@@ -26,6 +26,9 @@
 
 // options to control how MicroPython is built
 
+// Variant-specific definitions.
+#include "mpconfigvariant.h"
+
 // By default use MicroPython version of readline
 #ifndef MICROPY_USE_READLINE
 #define MICROPY_USE_READLINE        (1)
@@ -54,9 +57,13 @@
 #define MICROPY_REPL_AUTO_INDENT    (1)
 #define MICROPY_HELPER_LEXER_UNIX   (1)
 #define MICROPY_ENABLE_SOURCE_LINE  (1)
+#ifndef MICROPY_FLOAT_IMPL
 #define MICROPY_FLOAT_IMPL          (MICROPY_FLOAT_IMPL_DOUBLE)
+#endif
 #define MICROPY_LONGINT_IMPL        (MICROPY_LONGINT_IMPL_MPZ)
+#ifndef MICROPY_STREAMS_NON_BLOCK
 #define MICROPY_STREAMS_NON_BLOCK   (1)
+#endif
 #define MICROPY_STREAMS_POSIX_API   (1)
 #define MICROPY_OPT_COMPUTED_GOTO   (0)
 #define MICROPY_MODULE_WEAK_LINKS   (1)
@@ -77,8 +84,12 @@
 #define MICROPY_PY_BUILTINS_NOTIMPLEMENTED (1)
 #define MICROPY_PY_BUILTINS_INPUT   (1)
 #define MICROPY_PY_BUILTINS_POW3    (1)
+#ifndef MICROPY_PY_BUILTINS_HELP
 #define MICROPY_PY_BUILTINS_HELP    (1)
+#endif
+#ifndef MICROPY_PY_BUILTINS_HELP_MODULES
 #define MICROPY_PY_BUILTINS_HELP_MODULES (1)
+#endif
 #define MICROPY_PY_BUILTINS_ROUND_INT (1)
 #define MICROPY_PY_MICROPYTHON_MEM_INFO (1)
 #define MICROPY_PY_ALL_SPECIAL_METHODS (1)
@@ -97,16 +108,18 @@
 #define MICROPY_PY_SYS_EXC_INFO     (1)
 #define MICROPY_PY_COLLECTIONS_DEQUE (1)
 #define MICROPY_PY_COLLECTIONS_ORDEREDDICT (1)
+#ifndef MICROPY_PY_MATH_SPECIAL_FUNCTIONS
 #define MICROPY_PY_MATH_SPECIAL_FUNCTIONS (1)
-#define MICROPY_PY_MATH_ISCLOSE     (1)
+#endif
+#define MICROPY_PY_MATH_ISCLOSE     (MICROPY_PY_MATH_SPECIAL_FUNCTIONS)
 #define MICROPY_PY_CMATH            (1)
 #define MICROPY_PY_IO_IOBASE        (1)
 #define MICROPY_PY_IO_FILEIO        (1)
 #define MICROPY_PY_GC_COLLECT_RETVAL (1)
-#define MICROPY_MODULE_FROZEN_STR   (0)
+#ifndef MICROPY_STACKLESS
-
 #define MICROPY_STACKLESS           (0)
 #define MICROPY_STACKLESS_STRICT    (0)
+#endif
 
 #define MICROPY_PY_UTIME            (1)
 #define MICROPY_PY_UTIME_MP_HAL     (1)

ports/windows/mpconfigport.mk

@@ -1,12 +1,9 @@
 # Enable/disable modules and 3rd-party libs to be included in interpreter
 
 # Build 32-bit binaries on a 64-bit host
-MICROPY_FORCE_32BIT = 0
+MICROPY_FORCE_32BIT ?= 0
 
 # This variable can take the following values:
 #  0 - no readline, just simple stdin input
 #  1 - use MicroPython version of readline
-MICROPY_USE_READLINE = 1
+MICROPY_USE_READLINE ?= 1
-
-# ffi module requires libffi (libffi-dev Debian package)
-MICROPY_PY_FFI = 0

ports/windows/msvc/common.props

@@ -1,7 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <!-- Variant support. For compatibility with how it works for the other ports, this gets imported
+       early so variants cannot override build options like the ones specified in the rest of this file.
+       Use CustomPropsFile (see the .vcxproj file) for that. -->
+  <PropertyGroup>
+    <PyVariant Condition="'$(PyVariant)' == ''">standard</PyVariant>
+    <PyBuild Condition="'$(PyBuild)' == ''">build-$(PyVariant)</PyBuild>
+  </PropertyGroup>
   <ImportGroup Label="PropertySheets">
     <Import Project="paths.props" Condition="'$(PyPathsIncluded)' != 'True'"/>
+    <Import Project="$(PyVariantDir)mpconfigvariant.props"/>
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup>
@@ -31,6 +39,7 @@
       <Destination>$(PyTargetDir)%(FileName)%(Extension)</Destination>
     </PyOutputFiles>
     <PyCookieFiles Include="$(PyBuildDir)copycookie*" Exclude="$(PyFileCopyCookie)"/>
+    <QstrDependencies Include="$(PyVariantDir)mpconfigvariant.h"/>
   </ItemGroup>
 
   <!-- Copy PyOutputFiles to their target destination.

ports/windows/msvc/paths.props

@@ -11,13 +11,15 @@
           |- ports/windows [PyWinDir]
                     |- ...
                     |- micropython.exe
-                    |- build [PyBuildDir]
+                    |- build-standard [PyBuildDir]
                         |- Debugx64 [PyOutDir]
                         |   |- ...
                         |   |- micropython.exe
                         |   |- micropython.map
                         |   |- obj [PyIntDir]
                         |- genhdr
+                    |- variants
+                        |- standard [PyVariantDir]
 
          Note that the micropython executable will be copied from PyOutDir
          to PyWinDir after each build. -->
@@ -25,11 +27,12 @@
     <!-- Start from project root -->
     <PyBaseDir>$([System.IO.Path]::GetFullPath(`$(MSBuildThisFileDirectory)..\..\..`))\</PyBaseDir>
     <PyWinDir>$(PyBaseDir)ports\windows\</PyWinDir>
-    <PyBuildDir Condition="'$(PyBuildDir)' == ''">$(PyWinDir)build\</PyBuildDir>
+    <PyBuildDir Condition="'$(PyBuildDir)' == ''">$(PyWinDir)$(PyBuild)\</PyBuildDir>
+    <PyVariantDir Condition="'$(PyVariantDir)' == ''">$(PyWinDir)variants\$(PyVariant)\</PyVariantDir>
     <PyTargetDir Condition="'$(PyTargetDir)' == ''">$(PyWinDir)</PyTargetDir>
 
     <!-- All include directories needed for uPy -->
-    <PyIncDirs>$(PyIncDirs);$(PyBaseDir);$(PyWinDir);$(PyBuildDir);$(PyWinDir)msvc</PyIncDirs>
+    <PyIncDirs>$(PyIncDirs);$(PyBaseDir);$(PyWinDir);$(PyBuildDir);$(PyWinDir)msvc;$(PyVariantDir)</PyIncDirs>
 
     <!-- Within PyBuildDir different subdirectories are used based on configuration and platform.
          By default these are chosen based on the Configuration and Platform properties, but

ports/windows/variants/dev/manifest.py

@@ -0,0 +1 @@
+include("$(PORT_DIR)/variants/manifest.py")

ports/windows/variants/dev/mpconfigvariant.h

@@ -0,0 +1,37 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#define MICROPY_REPL_EMACS_WORDS_MOVE           (1)
+#define MICROPY_REPL_EMACS_EXTRA_WORDS_MOVE     (1)
+#define MICROPY_ENABLE_SCHEDULER                (1)
+
+#define MICROPY_PY_BUILTINS_HELP                (1)
+#define MICROPY_PY_BUILTINS_HELP_MODULES        (1)
+#define MICROPY_PY_SYS_SETTRACE                 (1)
+#define MICROPY_PERSISTENT_CODE_SAVE            (1)
+#define MICROPY_COMP_CONST                      (0)
+#define MICROPY_PY_URANDOM_EXTRA_FUNCS          (1)
+#define MICROPY_PY_BUILTINS_SLICE_INDICES       (1)

ports/windows/variants/dev/mpconfigvariant.mk

@@ -0,0 +1,5 @@
+PROG ?= micropython-dev
+
+FROZEN_MANIFEST ?= $(VARIANT_DIR)/manifest.py
+
+MICROPY_ROM_TEXT_COMPRESSION = 1

ports/windows/variants/dev/mpconfigvariant.props

@@ -0,0 +1,5 @@
+<Project>
+  <PropertyGroup>
+    <PyProg>micropython-dev</PyProg>
+  </PropertyGroup>
+</Project>

ports/windows/variants/standard/mpconfigvariant.h

@@ -0,0 +1,28 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#define MICROPY_PY_BUILTINS_HELP                (1)
+#define MICROPY_PY_BUILTINS_HELP_MODULES        (1)

ports/windows/variants/standard/mpconfigvariant.mk

@@ -0,0 +1,3 @@
+# This is the default variant when you `make` the Windows port.
+
+PROG ?= micropython

ports/windows/variants/standard/mpconfigvariant.props

@@ -0,0 +1,5 @@
+<Project>
+  <PropertyGroup>
+    <PyProg>micropython</PyProg>
+  </PropertyGroup>
+</Project>