add optional aspectc++ support

Makefile

 default: build/system.elf
 
 INCLUDES = -Iinclude
-COMMON_FLAGS = -g -Os -Wall -Wextra -unused -fno-rtti
+COMMON_FLAGS = -g -Os -Wall -Wextra -fno-rtti
 CFLAGS = -std=c99
 CXXFLAGS = -std=c++14
 

src/arch/arduino-nano/Makefile.inc

@@ -14,6 +14,10 @@ NM = avr-nm
 OBJCOPY = avr-objcopy
 OBJDUMP = avr-objdump
 
+ifeq (${aspectc}, 1)
+	CXX = ag++ -r build/repo.acp -v 0 --c_compiler avr-g++ -p . --Xcompiler
+endif
+
 TARGETS += src/arch/arduino-nano/arch.cc
 TARGETS += src/arch/arduino-nano/driver/gpio.cc
 TARGETS += src/arch/arduino-nano/driver/stdout.cc

src/arch/esp8266/Makefile.inc

@@ -11,6 +11,10 @@ AR = ${TOOLCHAIN_BASE}/xtensa-lx106-elf-ar
 LD = ${TOOLCHAIN_BASE}/xtensa-lx106-elf-gcc
 OBJCOPY = ${TOOLCHAIN_BASE}/xtensa-lx106-elf-objcopy
 
+ifeq (${aspectc}, 1)
+	CXX = ag++ -r build/repo.acp -v 0 --c_compiler ${TOOLCHAIN_BASE}/xtensa-lx106-elf-g++ -p . --Xcompiler
+endif
+
 INCLUDES += -Iinclude/esp8266 -I${SDK_BASE}/include
 COMMON_FLAGS += -nostdlib -mlongcalls -D__ets__ -DICACHE_FLASH
 CXXFLAGS = -std=c++11

src/arch/msp430fr5969lp/Makefile.inc

@@ -12,6 +12,10 @@ OBJCOPY = /opt/msp430/ti/gcc/bin/msp430-elf-objcopy
 
 TARGETS += src/arch/msp430fr5969lp/arch.cc
 
+ifeq (${aspectc}, 1)
+	CXX = ag++ -r build/repo.acp -v 0 --c_compiler /opt/msp430/ti/gcc/bin/msp430-elf-g++ -p . --Xcompiler
+endif
+
 ifneq ($(findstring adc,${arch_drivers}), )
 	TARGETS += src/arch/msp430fr5969lp/driver/adc.cc
 endif

src/arch/posix/Makefile.inc

@@ -3,6 +3,10 @@
 CC = gcc
 CXX = g++
 
+ifeq (${aspectc}, 1)
+	CXX = ag++ -r build/repo.acp -v 0 -p . --Xcompiler
+endif
+
 INCLUDES += -Iinclude/posix
 TARGETS += src/arch/posix/arch.cc src/arch/posix/driver/gpio.cc
 TARGETS += src/arch/posix/driver/stdout.cc src/arch/posix/driver/uptime.cc