contiki C++ compile causes region `FLASH_CCA' overflowed for zoul - c++

Question

I need to compile a C++ library to use with contiki on the Zolertia Re-Mote. I am trying a simple program first:
hello-world.c
#include "contiki.h"
#include "misc.h"
/*---------------------------------------------------------------------------*/
PROCESS(hello_world_process, "Hello world process");
AUTOSTART_PROCESSES(&hello_world_process);
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(hello_world_process, ev, data)
{
PROCESS_BEGIN();
say_hello();
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
misc.cpp
/* C++ implementation */
#ifdef CONTIKI_TARGET_ZOUL
void* __dso_handle;
void* __exidx_end;
void* __exidx_start;
#endif
#include <iostream>
using namespace std;
void cpp_say_hello(){
cout << "Hello world!" << endl;
}
/* C wrapper */
extern "C"{
#include "misc.h"
void say_hello(){
cpp_say_hello();
}
}
misc.h
#ifndef _MISC_H_
#define _MISC_H_
/**
* \brief Prints hello to stdout
*/
void say_hello();
#endif /* _MISC_H_ */
Makefile
ifeq ($(TARGET),)
TARGET = native
endif
CONTIKI_PROJECT = hello-world
all: $(CONTIKI_PROJECT)
PROJECT_LIBRARIES = obj_$(TARGET)/misc.o
include $(CONTIKI)/Makefile.include
obj_$(TARGET)/misc.o: misc.cpp
#mkdir -p obj_$(TARGET)
$(TRACE_CXX)
$(Q)$(CXX) $(CFLAGS) $(CXXFLAGS) -c $^ -o $#
This (with some modifications to the contiki Makefiles: here) made possible for me to use C++ code for the 'native' target. However when i try to compile for the Zolertia Re-Mote platform (TARGET=zoul) i obtain the following error:
/usr/lib/gcc/arm-none-eabi/8.2.0/../../../../arm-none-eabi/bin/ld: hello-world.elf section `.ARM.extab.text._Z13cpp_say_hellov' will not fit in region `FLASH_CCA'
/usr/lib/gcc/arm-none-eabi/8.2.0/../../../../arm-none-eabi/bin/ld: region `FLASH_CCA' overflowed by 788 bytes
collect2: error: ld returned 1 exit status
make: *** [/home/wellsaid/contiki/cpu/cc2538/Makefile.cc2538:103: hello-world.elf] Error 1
rm hello-world.co obj_zoul/startup-gcc.o
Any way to fix this?