Need Help With Makefile - Force 32Bit Compilation?

[JeZ-l-Lee]

Hi,

I have a makefile to build my game on Linux.
How would I modify the following makefile to force 32Bit compilation on 64Bit computers?

Here is the makefile:

# LettersFall[TM] 4 - MAKEFILE by JeZ+Lee & mattmatteh...
# (C)opyright 2012 By www.16BitSoft.com

TARGET = lf4

VERSION = 4.0

DEL_FILE = rm -f

CC      = g++
CFLAGS = -pipe -Wall -g #-"ggdb"
SDL_CFLAGS = $(shell sdl-config --cflags)
SDL_LIBS = $(shell sdl-config --libs) 

OPENGL_LIBS	= -lGL
SDL_TTF_LIBS	= -lSDL_ttf
SDL_IMAGE_LIBS	= -lSDL_image
SDL_MIXER_LIBS  = -lSDL_mixer

OBJECTS = src/main.o \
          src/audio.o \
          src/data.o \
          src/initialize.o \
          src/input.o \
          src/interface.o \
          src/logic.o \
          src/screens.o \
          src/settings.o \
          src/visuals.o

SOURCES = src/main.cpp \
          src/audio.cpp \
          src/data.cpp \
          src/initialize.cpp \
          src/input.cpp \
          src/interface.cpp \
          src/logic.cpp \
          src/screens.cpp \
          src/settings.cpp \
          src/visuals.cpp

HEADERS = src/audio.h \
          src/data.h \
          src/initialize.h \
          src/input.h \
          src/interface.h \
          src/logic.h \
          src/screens.h \
          src/settings.h \
          src/visuals.h

$(TARGET): $(OBJECTS)
	$(CC) $(OBJECTS) $(SDL_LIBS) $(OPENGL_LIBS) $(SDL_TTF_LIBS) $(SDL_IMAGE_LIBS) $(SDL_MIXER_LIBS) -o $@

.cpp.o:
	$(CC) $(CFLAGS) $(SDL_CFLAGS) -c $< -o $@

clean:
	rm $(OBJECTS) $(TARGET)

Thanks!

Jesse

[JeZ-l-Lee]

Hi,

I did some research on compiling 32Bit application on 64Bit Kubuntu 14,04 LTS.
I just needed to add: "-m32"(no quotes) to the "CFLAGS" line in the above makefile.

Only problem now is the application won't compile in 32Bits and has errors below?

Thanks!

JeZxLee

jezxlee@jezxlee-B85M-HD3:~/Desktop/LF4_Linux_Beta4/LettersFall4-DEB$ make
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/main.cpp -o src/main.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/audio.cpp -o src/audio.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/data.cpp -o src/data.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/initialize.cpp -o src/initialize.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/input.cpp -o src/input.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/interface.cpp -o src/interface.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/logic.cpp -o src/logic.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/screens.cpp -o src/screens.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/settings.cpp -o src/settings.o
g++ -m32 -pipe -Wall -g  -I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT -c src/visuals.cpp -o src/visuals.o
g++ src/main.o src/audio.o src/data.o src/initialize.o src/input.o src/interface.o src/logic.o src/screens.o src/settings.o src/visuals.o -L/usr/lib/x86_64-linux-gnu -lSDL  -lGL -lSDL_ttf -lSDL_image -lSDL_mixer -o lettersfall4
/usr/bin/ld: i386 architecture of input file `src/main.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/audio.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/data.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/initialize.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/input.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/interface.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/logic.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/screens.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/settings.o' is incompatible with i386:x86-64 output
/usr/bin/ld: i386 architecture of input file `src/visuals.o' is incompatible with i386:x86-64 output
src/main.o: In function `main':
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/main.cpp:57: undefined reference to `operator new(unsigned int)'
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/main.cpp:60: undefined reference to `operator new(unsigned int)'
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/main.cpp:62: undefined reference to `operator new(unsigned int)'
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/main.cpp:67: undefined reference to `operator new(unsigned int)'
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/main.cpp:69: undefined reference to `operator new(unsigned int)'
src/main.o:/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/main.cpp:71: more undefined references to `operator new(unsigned int)' follow                                                                             
src/data.o: In function `Data::LoadHighScoresAndOptions()':                                                     
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/data.cpp:203: undefined reference to `std::istream::getline(char*, int)'                                                                                             
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/data.cpp:206: undefined reference to `std::istream::getline(char*, int)'                                                                                             
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/data.cpp:209: undefined reference to `std::istream::getline(char*, int)'                                                                                             
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/data.cpp:214: undefined reference to `std::istream::getline(char*, int)'
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/data.cpp:217: undefined reference to `std::istream::getline(char*, int)'
src/data.o:/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/data.cpp:220: more undefined references to `std::istream::getline(char*, int)' follow
src/screens.o: In function `Screens::DisplayTitleScreen()':
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/screens.cpp:271: undefined reference to `operator new[](unsigned int)'
src/settings.o: In function `Settings::Settings(int, char**)':
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/settings.cpp:64: undefined reference to `operator new[](unsigned int)'
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/settings.cpp:257: undefined reference to `operator new[](unsigned int)'
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/settings.cpp:262: undefined reference to `operator new[](unsigned int)'
/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/settings.cpp:294: undefined reference to `operator new[](unsigned int)'
src/settings.o:/home/jezxlee/Desktop/LF4_Linux_Beta4/LettersFall4-DEB/src/settings.cpp:300: more undefined references to `operator new[](unsigned int)' follow
collect2: error: ld returned 1 exit status
make: *** [lettersfall4] Error 1