+
+# parse CC options first
+for opt do
+ optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
+ case "$opt" in
+ --cross-prefix=*) cross_prefix="$optarg"
+ ;;
+ --cc=*) cc="$optarg"
+ ;;
+ esac
+done
+
+# OS specific
+# Using uname is really, really broken. Once we have the right set of checks
+# we can eliminate it's usage altogether
+
+cc="${cross_prefix}${cc}"
+ar="${cross_prefix}${ar}"
+strip="${cross_prefix}${strip}"
+
+# check that the C compiler works.
+cat > $TMPC <<EOF
+int main(void) {}
+EOF
+
+if $cc $ARCH_CFLAGS -c -o $TMPO $TMPC > /dev/null 2> /dev/null ; then
+ : C compiler works ok
+else
+ echo "ERROR: \"$cc\" either does not exist or does not work"
+ exit 1
+fi
+
+check_define() {
+cat > $TMPC <<EOF
+#if !defined($1)
+#error Not defined
+#endif
+int main(void) { return 0; }
+EOF
+ $cc $ARCH_CFLAGS -c -o $TMPO $TMPC > /dev/null 2> /dev/null
+}
+
+if check_define __i386__ ; then
+ cpu="i386"
+elif check_define __x86_64__ ; then
+ cpu="x86_64"
+elif check_define __sparc__ ; then
+ # We can't check for 64 bit (when gcc is biarch) or V8PLUSA
+ # They must be specified using --sparc_cpu
+ if check_define __arch64__ ; then
+ cpu="sparc64"
+ else
+ cpu="sparc"
+ fi
+elif check_define _ARCH_PPC ; then
+ if check_define _ARCH_PPC64 ; then
+ cpu="ppc64"
+ else
+ cpu="ppc"
+ fi
+else
+ cpu=`uname -m`
+fi
+