--- jdk23u-jdk-23.0.1-ga/make/autoconf/flags.m4.orig
+++ jdk23u-jdk-23.0.1-ga/make/autoconf/flags.m4
@@ -266,6 +266,7 @@
   if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
     if test "x$OPENJDK_TARGET_CPU_ARCH" = xx86 &&
         test "x$OPENJDK_TARGET_CPU" != xx32 ||
+        test "x$OPENJDK_TARGET_CPU_ARCH" = xsparc ||
         test "x$OPENJDK_TARGET_CPU_ARCH" = xppc; then
       MACHINE_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
     fi