diff -rup tcc-0.9.22/configure tcc-0.9.22-pdf/configure
--- tcc-0.9.22/configure	2004-11-08 22:47:16.000000000 +0200
+++ tcc-0.9.22-pdf/configure	2005-03-30 22:07:59.846852856 +0200
@@ -35,6 +35,9 @@ case "$cpu" in
   i386|i486|i586|i686|i86pc|BePC)
     cpu="x86"
   ;;
+  x86_64)
+    cpu="x86_64"
+  ;;
   armv4l)
     cpu="armv4l"
   ;;
@@ -271,6 +274,11 @@ echo "EXESUF=$EXESUF" >> config.mak
 if test "$cpu" = "x86" ; then
   echo "ARCH=i386" >> config.mak
   echo "#define HOST_I386 1" >> $TMPH
+elif test "$cpu" = "x86_64" ; then
+  echo "ARCH=i386" >> config.mak
+  echo "X86_64=1" >> config.mak
+  echo "#define HOST_I386 1" >> $TMPH
+  echo "#define X86_64 1" >> $TMPH
 elif test "$cpu" = "armv4l" ; then
   echo "ARCH=arm" >> config.mak
   echo "#define HOST_ARM 1" >> $TMPH
diff -rup tcc-0.9.22/Makefile tcc-0.9.22-pdf/Makefile
--- tcc-0.9.22/Makefile	2004-11-08 22:47:16.000000000 +0200
+++ tcc-0.9.22-pdf/Makefile	2005-03-30 21:57:39.995084648 +0200
@@ -11,11 +11,17 @@ endif
 CFLAGS_P=$(CFLAGS) -pg -static -DCONFIG_TCC_STATIC
 LIBS_P=
 
+X86_64FLAGS=
+ifdef X86_64
+CFLAGS+=-m32 -march=i386 -DX86_64
+X86_64FLAGS=-m32 -march=i386 -DX86_64
+endif
+
 CFLAGS+=-mpreferred-stack-boundary=2
 ifeq ($(GCC_MAJOR),2)
 CFLAGS+=-m386 -malign-functions=0
 else
-CFLAGS+=-march=i386 -falign-functions=0 -fno-strict-aliasing
+CFLAGS+=-march=i386 -falign-functions=0 -fno-strict-aliasing 
 endif
 
 DISAS=objdump -d
@@ -106,10 +112,10 @@ speed: tcc ex2 ex3
 	time ./tcc -I. ./ex3.c 35
 
 ex2: ex2.c
-	$(CC) $(CFLAGS) -o $@ $<
+	$(CC) $(CFLAGS) -I. -o $@ $<
 
 ex3: ex3.c
-	$(CC) $(CFLAGS) -o $@ $<
+	$(CC) $(CFLAGS) -I. -o $@ $<
 
 # Native Tiny C Compiler
 
@@ -127,13 +133,13 @@ arm-tcc$(EXESUF): tcc.c arm-gen.c tccelf
 
 # TinyCC runtime libraries
 libtcc1.o: libtcc1.c
-	$(CC) -O2 -Wall -c -o $@ $<
+	$(CC) -O2 -Wall $(X86_64FLAGS) -c -o $@ $<
 
 libtcc1$(LIBSUF): libtcc1.o
 	$(AR) rcs $@ $^
 
 bcheck.o: bcheck.c
-	$(CC) -O2 -Wall -c -o $@ $<
+	$(CC) -O2 -Wall $(X86_64FLAGS) -c -o $@ $<
 
 install: tcc_install libinstall
 
diff -rup tcc-0.9.22/tcc.c tcc-0.9.22-pdf/tcc.c
--- tcc-0.9.22/tcc.c	2004-11-08 22:47:16.000000000 +0200
+++ tcc-0.9.22-pdf/tcc.c	2005-03-30 22:05:39.200234392 +0200
@@ -107,7 +107,11 @@ typedef int BOOL;
 
 /* path to find crt1.o, crti.o and crtn.o. Only needed when generating
    executables or dlls */
+#ifdef X86_64
+#define CONFIG_TCC_CRT_PREFIX "/usr/lib32"
+#else
 #define CONFIG_TCC_CRT_PREFIX "/usr/lib"
+#endif
 
 #define INCLUDE_STACK_SIZE  32
 #define IFDEF_STACK_SIZE    64
@@ -9589,9 +9593,13 @@ TCCState *tcc_new(void)
     
     /* default library paths */
     tcc_add_library_path(s, "/usr/local/lib");
+#ifdef X86_64    
+    tcc_add_library_path(s, "/usr/lib32");
+    tcc_add_library_path(s, "/lib32");
+#else
     tcc_add_library_path(s, "/usr/lib");
     tcc_add_library_path(s, "/lib");
-
+#endif 
     /* no section zero */
     dynarray_add((void ***)&s->sections, &s->nb_sections, NULL);