8269967: JavaFX should fail fast on macOS below minimum version

Reviewed-by: jvos, arapte

buildSrc/mac.gradle

@@ -59,6 +59,10 @@ def isAarch64 = TARGET_ARCH == "aarch64" || TARGET_ARCH == "arm64";
 def macOSMinVersion = isAarch64 ? "11.0" : "10.10";
 defineProperty("MACOSX_MIN_VERSION", macOSMinVersion);
 
+def macOSMinVersionArr = macOSMinVersion.split("\\.")
+def macOSMinVersionMajor = macOSMinVersionArr[0]
+def macOSMinVersionMinor = macOSMinVersionArr[1]
+
 // Create $buildDir/mac_tools.properties file and load props from it
 setupTools("mac_tools",
     { propFile ->
@@ -178,7 +182,9 @@ MAC.glass.javahInclude = [
     "com/sun/glass/ui/mac/*"]
 MAC.glass.nativeSource = file("${project("graphics").projectDir}/src/main/native-glass/mac")
 MAC.glass.compiler = compiler
-MAC.glass.ccFlags = [ccFlags].flatten()
+MAC.glass.ccFlags = [ccFlags,
+    "-DMACOS_MIN_VERSION_MAJOR=$macOSMinVersionMajor",
+    "-DMACOS_MIN_VERSION_MINOR=$macOSMinVersionMinor"].flatten()
 MAC.glass.linker = linker
 MAC.glass.linkFlags = [linkFlags].flatten()
 MAC.glass.lib = "glass"

modules/javafx.graphics/src/main/native-glass/mac/GlassApplication.m

@@ -793,6 +793,34 @@ + (BOOL)syncRenderingDisabled {
 {
     LOG("Java_com_sun_glass_ui_mac_MacApplication__1initIDs");
 
+    // Check minimum OS version
+    NSOperatingSystemVersion osVer;
+    osVer = [[NSProcessInfo processInfo] operatingSystemVersion];
+    NSInteger osVerMajor = osVer.majorVersion;
+    NSInteger osVerMinor = osVer.minorVersion;
+
+    // Map 10.16 to 11.0, since macOS will return 10.16 by default (for compatibility)
+    if (osVerMajor == 10 && osVerMinor >= 16) {
+        // FIXME: if we ever need to know which minor version of macOS 11.x we
+        // are running on, we will need to look it up using a similar technique
+        // to what the JDK does.
+        osVerMajor = 11;
+        osVerMinor = 0;
+    }
+
+    if (osVerMajor < MACOS_MIN_VERSION_MAJOR ||
+            (osVerMajor == MACOS_MIN_VERSION_MAJOR &&
+             osVerMinor < MACOS_MIN_VERSION_MINOR))
+    {
+        NSLog(@"ERROR: macOS version is %d.%d, which is below the minimum of %d.%d",
+              (int)osVerMajor, (int)osVerMinor, MACOS_MIN_VERSION_MAJOR, MACOS_MIN_VERSION_MINOR);
+        jclass exceptionClass = (*env)->FindClass(env, "java/lang/RuntimeException");
+        if (exceptionClass != 0) {
+            (*env)->ThrowNew(env, exceptionClass, "Unsupported macOS version");
+        }
+        return;
+    }
+
     disableSyncRendering = jDisableSyncRendering ? YES : NO;
 
     jApplicationClass = (*env)->NewGlobalRef(env, jClass);