How would I compile without SSE? I need to do this because my CPU is unsupported. Can someone help me? I have Ubuntu 32 bit.

when I try to run the powder toy it says: Illegal instruction.

Edit: when i make it this is what is says:

gcc -DINTERNAL -opowder -Wall -std=c99 -D_POSIX_C_SOURCE=200112L -fgnu89-inline -O3 -ffast-math -ftree-vectorize -funsafe-math-optimizations -lSDL -lm -lbz2 -march=k8 -DX86 -DX86_SSE3 -msse3 powder.c http.c md5.c update.c -DLIN64
powder.c: In function ‘file_load’:
powder.c:3615: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result
powder.c: In function ‘stamp_init’:
powder.c:3786: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result
powder.c: In function ‘load_string’:
powder.c:7150: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result
powder.c:7156: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result
powder.c: In function ‘load_presets’:
powder.c:7196: warning: ignoring return value of ‘fread’, declared with attribute warn_unused_result
powder.c: At top level:
icon.h:22: warning: ‘app_icon_w32’ defined but not used

AMD Athlon(tm) Processor 1050.057MHz (about 1.05GHz) (got from computer info)

tried both, still says: Illegal instruction.

SOURCES := powder.c http.c md5.c update.c
HEADERS := font.h hmap.h http.h md5.h icon.h update.h version.h

CFLAGS := -Wall -std=c99 -D_POSIX_C_SOURCE=200112L -fgnu89-inline
OFLAGS := -O3 -ffast-math -ftree-vectorize -funsafe-math-optimizations
LFLAGS := -lSDL -lm -lbz2
LFLAGS_MTW32 := -lpthreadGC2
LFLAGS_MT := $(LFLAGS) -lpthread
MFLAGS_MT := -DX86 -DX86_SSE3 -DMT -msse3
MFLAGS_SSE3 := -DX86 -DX86_SSE3 -msse3
MFLAGS_SSE2 := -DX86 -DX86_SSE2
MFLAGS_SSE := -march=pentium3 -DX86 -DX86_SSE

LINUX_TARG := powder-64-sse2 powder-sse powder-sse2
WIN32_TARG := powder-sse.exe powder-sse2.exe

powder: $(SOURCES) $(HEADERS)
gcc -DINTERNAL -o$@ $(CFLAGS) $(OFLAGS) $(LFLAGS) $(MFLAGS_SSE3) $(SOURCES) -DLIN64

powder-sse3: $(SOURCES) $(HEADERS)
gcc -m32 -o$@ $(CFLAGS) $(OFLAGS) $(LFLAGS) $(MFLAGS_SSE3) $(SOURCES) -DLIN32
strip $@
powder-mt: $(SOURCES) $(HEADERS)
gcc -m32 -o$@ $(CFLAGS) $(OFLAGS) $(LFLAGS_MT) $(MFLAGS_MT) $(SOURCES) -DLIN32
strip $@
powder-sse2: $(SOURCES) $(HEADERS)
gcc -m32 -o$@ $(CFLAGS) $(OFLAGS) $(LFLAGS) $(MFLAGS_SSE2) $(SOURCES) -DLIN32
strip $@
powder-sse: $(SOURCES) $(HEADERS)
gcc -m32 -o$@ $(CFLAGS) $(OFLAGS) $(LFLAGS) $(MFLAGS_SSE) $(SOURCES) -DLIN32
strip $@

powder-64-sse3: $(SOURCES) $(HEADERS)
gcc -o$@ $(CFLAGS) $(OFLAGS) $(LFLAGS) $(MFLAGS_SSE3) $(SOURCES) -DLIN64
strip $@
powder-64-sse2: $(SOURCES) $(HEADERS)
gcc -o$@ $(CFLAGS) $(OFLAGS) $(LFLAGS) $(MFLAGS_SSE2) $(SOURCES) -DLIN64
strip $@

powder-res.o: powder-res.rc powder.ico
i586-mingw32msvc-windres powder-res.rc powder-res.o

powder-sse3.exe: $(SOURCES) $(HEADERS) powder-res.o
i586-mingw32msvc-gcc -o$@ $(CFLAGS) $(OFLAGS) $(MFLAGS_SSE3) $(SOURCES) powder-res.o -lmingw32 -lws2_32 -lSDLmain $(LFLAGS) -mwindows -DWIN32
strip $@
chmod 0644 $@
powder-mt.exe: $(SOURCES) $(HEADERS) powder-res.o
i586-mingw32msvc-gcc -o$@ $(CFLAGS) $(OFLAGS) $(MFLAGS_MT) $(SOURCES) powder-res.o -lmingw32 -lws2_32 -lSDLmain $(LFLAGS_MTW32) -mwindows -DWIN32
strip $@
chmod 0644 $@
powder-sse2.exe: $(SOURCES) $(HEADERS) powder-res.o
i586-mingw32msvc-gcc -o$@ $(CFLAGS) $(OFLAGS) $(MFLAGS_SSE2) $(SOURCES) powder-res.o -lmingw32 -lws2_32 -lSDLmain $(LFLAGS) -mwindows -DWIN32
strip $@
chmod 0644 $@
powder-sse.exe: $(SOURCES) $(HEADERS) powder-res.o
i586-mingw32msvc-gcc -o$@ $(CFLAGS) $(OFLAGS) $(MFLAGS_SSE) $(SOURCES) powder-res.o -lmingw32 -lws2_32 -lSDLmain $(LFLAGS) -mwindows -DWIN32
strip $@
chmod 0644 $@
powder-x: $(SOURCES) $(HEADERS)
gcc -o $@ $(CFLAGS) $(OFLAGS) $(LFLAGS) $(MFLAGS) $(SOURCES) -lSDLmain -DMACOSX -DPIX32BGRA -arch x86_64 -framework Cocoa
strip $@
powder-x-mt: $(SOURCES) $(HEADERS)
gcc -o $@ $(CFLAGS) $(OFLAGS) $(LFLAGS_MT) $(MFLAGS_MT) $(SOURCES) -lSDLmain -DMACOSX -DPIX32BGRA -arch x86_64 -framework Cocoa
powder-src.tar.bz2: *.c *.h *.rc *.ico Makefile
mkdir powder-src
cp *.c *.h *.rc *.ico Makefile powder-src/
tar cfj powder-src.tar.bz2 powder-src
rm -rf powder-src

release: $(LINUX_TARG) $(WIN32_TARG) powder-src.tar.bz2
tar cfz powder-linux.tar.gz $(LINUX_TARG)
cp /usr/i586-mingw32msvc/bin/SDL.dll .
zip powder-win32.zip $(WIN32_TARG) SDL.dll
mkdir -p release
mv powder-linux.tar.gz release/
mv powder-win32.zip release/
mv powder-src.tar.bz2 release/
cp powder-sse.exe powder.exe
rm -f release/powder.zip
zip release/powder.zip powder.exe SDL.dll
cp powder-64-sse2 release/powder64
rm -f release/powder64.gz
gzip release/powder64
rm -f release/powder.gz
cp powder-sse release/powder
gzip release/powder
cd release; tar czf powder-bin.tar.gz powder.gz powder64.gz powder-linux.tar.gz powder-win32.zip powder.zip; cd ..
rm -f $(LINUX_TARG) $(WIN32_TARG) SDL.dll powder.exe