configure: Fix test for supported host CPU type
The test for whether the host CPU is supported had several problems:
* the attempt to fall back to TCI was done as a duplicate
test, very late (so "--cpu foo" would fail early but "--cpu unicore32"
would fail late, differently, and after configure had already
printed a lot of output)
* a number of CPUs only supported as guests were included in the
list of CPUs we would accept as valid hosts, which would result
in a late compile failure on those systems rather than a
configure failure or fallback to TCI
* bailing out for an unsupported CPU happened before the main
option parsing, so "configure --help" wouldn't work
Fix these by folding the setting of ARCH into the first test for
supported host CPU, removing spurious guest-only CPU names from it,
and moving the "fall back to TCI" code earlier.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
diff --git a/configure b/configure
index af19391..a1394eb 100755
--- a/configure
+++ b/configure
@@ -300,8 +300,11 @@
cpu=`uname -m`
fi
+ARCH=
+# Normalise host CPU name and set ARCH.
+# Note that this case should only have supported host CPUs, not guests.
case "$cpu" in
- alpha|cris|ia64|lm32|m68k|microblaze|ppc|ppc64|sparc64|unicore32)
+ ia64|ppc|ppc64|s390|s390x|sparc64)
cpu="$cpu"
;;
i386|i486|i586|i686|i86pc|BePC)
@@ -319,20 +322,17 @@
mips*)
cpu="mips"
;;
- s390)
- cpu="s390"
- ;;
- s390x)
- cpu="s390x"
- ;;
sparc|sun4[cdmuv])
cpu="sparc"
;;
*)
- echo "Unsupported CPU = $cpu"
- exit 1
+ # This will result in either an error or falling back to TCI later
+ ARCH=unknown
;;
esac
+if test -z "$ARCH"; then
+ ARCH="$cpu"
+fi
# OS specific
if check_define __linux__ ; then
@@ -1080,6 +1080,18 @@
exit 1
fi
+# Now we have handled --enable-tcg-interpreter and know we're not just
+# printing the help message, bail out if the host CPU isn't supported.
+if test "$ARCH" = "unknown"; then
+ if test "$tcg_interpreter" = "yes" ; then
+ echo "Unsupported CPU = $cpu, will use TCG with TCI (experimental)"
+ ARCH=tci
+ else
+ echo "Unsupported CPU = $cpu, try --enable-tcg-interpreter"
+ exit 1
+ fi
+fi
+
# check that the C compiler works.
cat > $TMPC <<EOF
int main(void) { return 0; }
@@ -2903,20 +2915,6 @@
echo "docdir=$docdir" >> $config_host_mak
echo "confdir=$confdir" >> $config_host_mak
-case "$cpu" in
- i386|x86_64|alpha|arm|cris|hppa|ia64|lm32|m68k|microblaze|mips|mips64|ppc|ppc64|s390|s390x|sparc|sparc64|unicore32)
- ARCH=$cpu
- ;;
- *)
- if test "$tcg_interpreter" = "yes" ; then
- echo "Unsupported CPU = $cpu, will use TCG with TCI (experimental)"
- ARCH=tci
- else
- echo "Unsupported CPU = $cpu, try --enable-tcg-interpreter"
- exit 1
- fi
- ;;
-esac
echo "ARCH=$ARCH" >> $config_host_mak
if test "$debug_tcg" = "yes" ; then
echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
