--- a/build.gradle
+++ b/build.gradle
@@ -291,7 +291,7 @@ ext.MODULESOURCEPATH = "modulesourcepath.args"
 // this build running on a Mac, Windows, or Linux machine? 32 or 64 bit?
 ext.OS_NAME = System.getProperty("os.name").toLowerCase()
 ext.OS_ARCH = System.getProperty("os.arch")
-ext.IS_64 = OS_ARCH.toLowerCase().contains("64")
+ext.IS_64 = OS_ARCH.toLowerCase().contains("64") || OS_ARCH.toLowerCase().contains("s390x")
 ext.IS_MAC = OS_NAME.contains("mac") || OS_NAME.contains("darwin")
 ext.IS_WINDOWS = OS_NAME.contains("windows")
 ext.IS_LINUX = OS_NAME.contains("linux")
@@ -308,7 +308,7 @@ if (IS_WINDOWS && OS_ARCH != "x86" && OS_ARCH != "amd64") {
 } else if (IS_MAC && OS_ARCH != "x86_64" && OS_ARCH != "aarch64") {
     fail("Unknown and unsupported build architecture: $OS_ARCH")
 } else if (IS_LINUX && OS_ARCH != "i386" && OS_ARCH != "amd64") {
-    fail("Unknown and unsupported build architecture: $OS_ARCH")
+    logger.warn("Unknown and unsupported build architecture: $OS_ARCH")
 }