Refactor build scripts for development platforms

platformio/builder/scripts/baseavr.py

@@ -0,0 +1,96 @@
+# Copyright (C) Ivan Kravets <me@ikravets.com>
+# See LICENSE for details.
+
+"""
+    Base for Atmel AVR series of microcontrollers
+"""
+
+from SCons.Script import Builder, Import, Return
+
+env = None
+Import("env")
+
+env.Replace(
+    AR="avr-ar",
+    AS="avr-gcc",
+    CC="avr-gcc",
+    CXX="avr-g++",
+    OBJCOPY="avr-objcopy",
+    RANLIB="avr-ranlib",
+    SIZETOOL="avr-size",
+
+    ARFLAGS=["rcs"],
+
+    ASFLAGS=[
+        "-c",
+        "-g",  # include debugging info (so errors include line numbers)
+        "-x", "assembler-with-cpp",
+        "-mmcu=$BOARD_MCU"
+    ],
+
+    CCFLAGS=[
+        "-g",  # include debugging info (so errors include line numbers)
+        "-Os",  # optimize for size
+        "-Wall",  # show warnings
+        "-ffunction-sections",  # place each function in its own section
+        "-fdata-sections",
+        "-MMD",  # output dependency info
+        "-mmcu=$BOARD_MCU"
+    ],
+
+    CXXFLAGS=[
+        "-fno-exceptions",
+        "-fno-threadsafe-statics"
+    ],
+
+    CPPDEFINES=[
+        "F_CPU=$BOARD_F_CPU"
+    ],
+
+    LINKFLAGS=[
+        "-Os",
+        "-mmcu=$BOARD_MCU",
+        "-Wl,--gc-sections"
+    ],
+
+    SIZEPRINTCMD='"$SIZETOOL" --mcu=$BOARD_MCU -C -d $SOURCES'
+)
+
+if "UPLOAD_SPEED" in env:
+    env.Append(UPLOADERFLAGS=["-b", "$UPLOAD_SPEED"])
+if env.subst("$UPLOAD_PROTOCOL") != "usbtiny":
+    env.Append(UPLOADERFLAGS=["-P", "$UPLOAD_PORT"])
+
+env.Append(
+    BUILDERS=dict(
+        ElfToEep=Builder(
+            action=" ".join([
+                "$OBJCOPY",
+                "-O",
+                "ihex",
+                "-j",
+                ".eeprom",
+                '--set-section-flags=.eeprom="alloc,load"',
+                "--no-change-warnings",
+                "--change-section-lma",
+                ".eeprom=0",
+                "$SOURCES",
+                "$TARGET"]),
+            suffix=".eep"
+        ),
+
+        ElfToHex=Builder(
+            action=" ".join([
+                "$OBJCOPY",
+                "-O",
+                "ihex",
+                "-R",
+                ".eeprom",
+                "$SOURCES",
+                "$TARGET"]),
+            suffix=".hex"
+        )
+    )
+)
+
+Return("env")