It runs on the OLPC XO now, unless you run out of memory. Do not even think of using stamps, system fonts, etc.

Makefile

@@ -104,7 +104,8 @@ SVG_CFLAGS=-I/usr/include/cairo
 # The entire set of CFLAGS:
 
 #-ffast-math
-CFLAGS=-O2 -W -Wall -fno-common -ffloat-store \
+OPTFLAGS=-O2
+CFLAGS=$(OPTFLAGS) -W -Wall -fno-common -ffloat-store \
 	-Wcast-align -Wredundant-decls \
 	-Wbad-function-cast -Wwrite-strings \
 	-Waggregate-return \
@@ -184,6 +185,15 @@ nosvg:
 	make SVG_LIB= SVG_CFLAGS= NOSVGFLAG=NOSVG
 
 
+# "make olpc" builds the program for an OLPC XO:
+
+olpc:
+	@echo
+	@echo "Building for an OLPC XO"
+	@echo
+	make SVG_LIB= SVG_CFLAGS= NOSVGFLAG=NOSVG OPTFLAGS='-O2 -fno-tree-pre -march=athlon -mtune=generic -mpreferred-stack-boundary=2 -mmmx -m3dnow -fomit-frame-pointer -falign-functions=0 -falign-jumps=0 -DOLPC_XO -DSUGAR'
+
+
 # "make beos" builds the program for BeOS
 
 beos:

src/fonts.h

@@ -79,7 +79,11 @@ extern unsigned text_size;
 // nice progression (alternating 33% and 25%) 9 12 18 24 36 48 72 96 144 192
 // commonly hinted sizes seem to be: 9, 10, 12, 14, 18, 20 (less so), 24
 // reasonable: 9,12,18... and 10,14,18...
-static int text_sizes[] = { 9, 12, 18, 24, 36, 48,
+static int text_sizes[] = {
+#ifndef OLPC_XO
+  9,
+#endif
+  12, 18, 24, 36, 48,
   56, 64, 96, 112, 128, 160
 };				// point sizes
 

src/tuxpaint.c

@@ -32,7 +32,7 @@
 
 /* Color depth for Tux Paint to run in, and store canvases in: */
 
-#ifdef NOKIA_770
+#if defined(NOKIA_770) || defined(OLPC_XO)
 # define VIDEO_BPP 15
 #else
 //# define VIDEO_BPP 15 // saves memory