make this script suck less:
 - dont use known files in /tmp
 - dont use absolute paths to headers
 - dont hardcode gcc/cc
 - dont spit out warnings about incompat func types

http://bugs.gentoo.org/146903

--- config/parse-types.sh
+++ config/parse-types.sh
@@ -1,27 +1,20 @@
 #!/bin/sh
 
-ASM_TYPES=/usr/include/asm/types.h
-
-if test ! -f $ASM_TYPES
-then
-    echo "" > asm_types.h
-    echo "No asm_types file found"
-    exit 1
-fi
-
-cat > /tmp/sed.script << "EOF"
+echo '#include <asm/types.h>' | ${CPP-${CC-gcc} -E} - | sed \
+"
 /^#/d
 /^$/d
 s/__extension__ //
 s/typedef \(.*\) __u\([1-9]*\);/#define __U\2_TYPEDEF \1/
 s/typedef \(.*\) __s\([1-9]*\);/#define __S\2_TYPEDEF \1/
-EOF
-
-gcc -E $ASM_TYPES | sed -f /tmp/sed.script | grep ^# > asm_types.h
+" \
+| grep ^# > asm_types.h
 
 cp asm_types.h asm_types.c
 
 cat >> asm_types.c <<EOF
+#include <stdio.h>
+#include <stdlib.h>
 main(int argc, char **argv)
 {
 #ifdef __U8_TYPEDEF
@@ -102,7 +95,7 @@
 }
 EOF
 
-cc -o asm_types asm_types.c
+${BUILD_CC-gcc} -o asm_types asm_types.c
 if ! ./asm_types 
 then
     echo "Problem detected with asm_types.h"