Refactor build scripts for development platforms

platformio/builder/scripts/basearm.py

@@ -0,0 +1,97 @@
+# Copyright (C) Ivan Kravets <me@ikravets.com>
+# See LICENSE for details.
+
+"""
+    Base for ARM microcontrollers.
+"""
+
+from SCons.Script import Builder, Import, Return
+
+env = None
+Import("env")
+
+env.Replace(
+    AR="arm-none-eabi-ar",
+    AS="arm-none-eabi-gcc",
+    CC="arm-none-eabi-gcc",
+    CXX="arm-none-eabi-g++",
+    OBJCOPY="arm-none-eabi-objcopy",
+    RANLIB="arm-none-eabi-ranlib",
+    SIZETOOL="arm-none-eabi-size",
+
+    ARFLAGS=["rcs"],
+
+    ASFLAGS=[
+        "-c",
+        "-g",  # include debugging info (so errors include line numbers)
+        "-x", "assembler-with-cpp",
+        "-Wall",
+        "-mthumb",
+        "-mcpu=${BOARD_OPTIONS['build']['cpu']}"
+    ],
+
+    CPPFLAGS=[
+        "-g",   # include debugging info (so errors include line numbers)
+        "-Os",  # optimize for size
+        "-ffunction-sections",  # place each function in its own section
+        "-fdata-sections",
+        "-Wall",
+        "-mthumb",
+        "-mcpu=${BOARD_OPTIONS['build']['cpu']}",
+        "-nostdlib",
+        "-MMD"  # output dependancy info
+    ],
+
+    CXXFLAGS=[
+        "-fno-rtti",
+        "-fno-exceptions"
+    ],
+
+    CPPDEFINES=[
+        "F_CPU=$BOARD_F_CPU"
+    ],
+
+    LINKFLAGS=[
+        "-Os",
+        "-Wl,--gc-sections",
+        "-mthumb",
+        "-mcpu=${BOARD_OPTIONS['build']['cpu']}"
+    ],
+
+    SIZEPRINTCMD='"$SIZETOOL" -B -d $SOURCES'
+)
+
+if env.get("BOARD_OPTIONS", {}).get("build", {}).get("cpu")[-2:] == "m4":
+    env.Append(
+        ASFLAGS=[
+            "-mfloat-abi=hard",
+            "-mfpu=fpv4-sp-d16",
+            "-fsingle-precision-constant"
+        ],
+        CCFLAGS=[
+            "-mfloat-abi=hard",
+            "-mfpu=fpv4-sp-d16",
+            "-fsingle-precision-constant"
+        ],
+        LINKFLAGS=[
+            "-mfloat-abi=hard",
+            "-mfpu=fpv4-sp-d16",
+            "-fsingle-precision-constant"
+        ]
+    )
+
+env.Append(
+    BUILDERS=dict(
+        ElfToBin=Builder(
+            action=" ".join([
+                "$OBJCOPY",
+                "-O",
+                "binary",
+                "$SOURCES",
+                "$TARGET"]),
+            suffix=".bin"
+        )
+    )
+)
+
+Return("env")