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Undefined references

OscRich (2)
Greetings. I got some trouble with a project. When compiling it shows me this:

> "make"
player.cpp
linking ... yosdemo.elf
main.o: In function `levelManager::update()':
e:/yosdemo/source/lvl/level_manager.cpp:17: undefined reference to `mapLevel::draw()'
main.o: In function `__static_initialization_and_destruction_0':
e:/yosdemo/source/lvl/level_manager.cpp:4: undefined reference to `mapLevel::~mapLevel()'
e:/yosdemo/source/lvl/level_manager.cpp:4: undefined reference to `mapLevel::mapLevel()'
collect2: ld returned 1 exit status
make[1]: *** [/e/yosdemo/yosdemo.elf] Error 1
"make": *** [build] Error 2

> Process Exit Code: 2
> Time Taken: 00:14

Here are the files:

level_manager.cpp:
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#include "level_manager.h"
#include "level.h"

mapLevel Level;

levelManager:: levelManager()
{
}


levelManager:: ~levelManager()
{
}

void levelManager:: update()
{
	Level.draw();
};


level_manager.h:
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#ifndef __LEVEL_MANAGER_H__
#define __LEVEL_MANAGER_H__

class levelManager
{
	public:
		levelManager();
		~levelManager();
		void update();
};

#endif


level.cpp:
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#include "../redblock.h"
#include "../camera.h"
#include "level.h"
#include "map.h"

#define tilew (16)
#define tileh (16)

GRRLIB_texImg * block;

mapLevel:: mapLevel()
{
	block = GRRLIB_LoadTexture(spr_redblock);
	mapw=32;
	maph=15;
}


mapLevel:: ~mapLevel()
{
}

void mapLevel:: start()
{
	block = GRRLIB_LoadTexture(spr_redblock);
	mapw=32;
	maph=15;
}

bool mapLevel::draw()
{
	for (x=0; x<=mapw; x++) {
		for (y=0; y<=maph; y++) {
			if (testlevel_map0[y][x]!=0) {
				GRRLIB_DrawImg(x*tilew+camx, y*tileh, block, 0, 1, 1, 0xFFFFFFFF);
			}
		}
	}
return true;
};


level.h:
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#ifndef __LEVEL_H__
#define __LEVEL_H__

class mapLevel
	{
		public:
			mapLevel();
            ~mapLevel();
			void start();
			bool draw();
			int x, y;
			int tilew, tileh;
			int mapw, maph;
		private:
	};
#endif


Makefile:
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#---------------------------------------------------------------------------------
# Clear the implicit built in rules
#---------------------------------------------------------------------------------
.SUFFIXES:
#---------------------------------------------------------------------------------
ifeq ($(strip $(DEVKITPPC)),)
$(error "Please set DEVKITPPC in your environment. export DEVKITPPC=<path to>devkitPPC)
endif

include $(DEVKITPPC)/wii_rules

#---------------------------------------------------------------------------------
# TARGET is the name of the output
# BUILD is the directory where object files & intermediate files will be placed
# SOURCES is a list of directories containing source code
# INCLUDES is a list of directories containing extra header files
#---------------------------------------------------------------------------------
TARGET		:=	$(notdir $(CURDIR))
BUILD		:=	build
SOURCES		:=	source
DATA		:=	data  
INCLUDES	:=

#---------------------------------------------------------------------------------
# options for code generation
#---------------------------------------------------------------------------------

CFLAGS	= -g -O2 -Wall $(MACHDEP) $(INCLUDE)
CXXFLAGS = $(CFLAGS)

LDFLAGS	=	-g $(MACHDEP) -mrvl -Wl,-Map,$(notdir $@).map

#---------------------------------------------------------------------------------
# any extra libraries we wish to link with the project
#---------------------------------------------------------------------------------
 LIBS    := -lgrrlib -lfreetype -lpngu -lpng -ljpeg -lz -lfat 
 LIBS    += -lwiiuse 
 LIBS    += -lmodplay -lasnd 
 LIBS    += -lbte -logc -lm 

#---------------------------------------------------------------------------------
# list of directories containing libraries, this must be the top level containing
# include and lib
#---------------------------------------------------------------------------------
LIBDIRS	:=		$(CURDIR)

#---------------------------------------------------------------------------------
# no real need to edit anything past this point unless you need to add additional
# rules for different file extensions
#---------------------------------------------------------------------------------
ifneq ($(BUILD),$(notdir $(CURDIR)))
#---------------------------------------------------------------------------------

export OUTPUT	:=	$(CURDIR)/$(TARGET)

export VPATH	:=	$(foreach dir,$(SOURCES),$(CURDIR)/$(dir)) \
					$(foreach dir,$(DATA),$(CURDIR)/$(dir))

export DEPSDIR	:=	$(CURDIR)/$(BUILD)

#---------------------------------------------------------------------------------
# automatically build a list of object files for our project
#---------------------------------------------------------------------------------
CFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
CPPFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
sFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
SFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.S)))
BINFILES	:=	$(foreach dir,$(DATA),$(notdir $(wildcard $(dir)/*.*)))

#---------------------------------------------------------------------------------
# use CXX for linking C++ projects, CC for standard C
#---------------------------------------------------------------------------------
ifeq ($(strip $(CPPFILES)),)
	export LD	:=	$(CC)
else
	export LD	:=	$(CXX)
endif

export OFILES	:=	$(addsuffix .o,$(BINFILES)) \
					$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) \
					$(sFILES:.s=.o) $(SFILES:.S=.o)

#---------------------------------------------------------------------------------
# build a list of include paths
#---------------------------------------------------------------------------------
export INCLUDE	:=	$(foreach dir,$(INCLUDES), -iquote $(CURDIR)/$(dir)) \
					$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
					-I$(CURDIR)/$(BUILD) \
					-I$(LIBOGC_INC)

#---------------------------------------------------------------------------------
# build a list of library paths
#---------------------------------------------------------------------------------
export LIBPATHS	:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib) \
					-L$(LIBOGC_LIB)

export OUTPUT	:=	$(CURDIR)/$(TARGET)
.PHONY: $(BUILD) clean

#---------------------------------------------------------------------------------
$(BUILD):
	@[ -d $@ ] || mkdir -p $@
	@make --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile

#---------------------------------------------------------------------------------
clean:
	@echo clean ...
	@rm -fr $(BUILD) $(OUTPUT).elf $(OUTPUT).dol

#---------------------------------------------------------------------------------
run:
	psoload $(TARGET).dol

#---------------------------------------------------------------------------------
reload:
	psoload -r $(TARGET).dol


#---------------------------------------------------------------------------------
else

DEPENDS	:=	$(OFILES:.o=.d)

#---------------------------------------------------------------------------------
# main targets
#---------------------------------------------------------------------------------
$(OUTPUT).dol: $(OUTPUT).elf
$(OUTPUT).elf: $(OFILES)

#---------------------------------------------------------------------------------
# This rule links in binary data with the .jpg extension
#---------------------------------------------------------------------------------
%.jpg.o	:	%.jpg
#---------------------------------------------------------------------------------
	@echo $(notdir $<)
	$(bin2o)
	
#--------------------------------------------------------------------------------- 
 %.png.o :       %.png 
#---------------------------------------------------------------------------------
	@echo $(notdir $<) 
	$(bin2o) 

%.bin.o	:	%.bin
#---------------------------------------------------------------------------------
	@echo $(notdir $<)
	$(bin2o)

-include $(DEPENDS)

#---------------------------------------------------------------------------------
endif
#---------------------------------------------------------------------------------


I have no idea if the error is in the makefile. I use Programmer's Notepad, by the way.

If there's a missing file I have to put, let me know. Thanks.
Pax (155)
Move mapLevel Level; from line 4 of your level_manager.cpp file to the .h file to make it a class member variable. Include level.h in level_manager.h

Also, I think remove the spaces after the :: in the function declarations. I'm not sure if whitespace is allowed in there.
Last edited on
OscRich (2)
The errors still persist. I removed the blank spaces and it's the same.
Here are the updated files:

level_manager.cpp:
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#include "level_manager.h"
//#include "level.h"

levelManager::levelManager()
{
	
}


levelManager::~levelManager()
{
	
}

void levelManager::update()
{
	Level.draw();
};

With/without the include .h marks the same.


level_manager.h:
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#ifndef __LEVEL_MANAGER_H__
#define __LEVEL_MANAGER_H__
#include "level.h"

class levelManager
{
	public:
		levelManager();
		~levelManager();
		void update();
		mapLevel Level;
};

#endif
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