powerpc: Automatically guess --with-cpu value
Commit Message
On 1/18/16 3:38 PM, Andreas Schwab wrote:
>
> Your sort key isn't numeric.
No, but 'sort' will ignore the text prefix and produce the desired
result nevertheless.
Anyway, I'll just remove -n option. It is not necessary.
Comments
Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> writes:
> No, but 'sort' will ignore the text prefix
No, it doesn't. Non-numeric sort keys are the same as zero.
Andreas.
@@ -15,3 +15,35 @@ powerpc*)
rm -f conftest.i
;;
esac
+
+# Lets ask the compiler which Power processor we've got, in case the user did
+# not choose a --with-cpu value.
+# Note if you add patterns here you must ensure that an appropriate directory
+# exists in sysdeps/powerpc
+if test -z "$with_cpu"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: --with-cpu not set. Trying to detect CPU." >&5
+ $as_echo "$as_me: --with-cpu not set. Trying to detect CPU." >&6;}
+ archcpu=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
+ sed -n 's/^#define \(_ARCH_PWR[0-9].*\) .*$/\1/p' |
+ sort -r | head -n 1`
+
+# Set --with-cpu as appropriate.
+ case "$archcpu" in
+ _ARCH_PWR5X)
+ submachine="power5+"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: CPU identified as $submachine" >&5
+ $as_echo "$as_me: CPU identified as $submachine" >&6;}
+ ;;
+ _ARCH_PWR*)
+ submachine=`echo $archcpu | sed "s/_ARCH_PWR/power/" |
+ tr '[:upper:]' '[:lower:]'`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: CPU identified as $submachine" >&5
+ $as_echo "$as_me: CPU identified as $submachine" >&6;}
+ ;;
+ *)
+ submachine=""
+ { $as_echo "$as_me:${as_lineno-$LINENO}: CPU not identified; using default" >&5
+ $as_echo "$as_me: CPU not identified; using default" >&6;}
+ ;;
+ esac
+fi