Remove '-lgcc' option in ndk 23. Fixes #75.

Author: minyung

plugin/src/main/kotlin/com/nishtahir/CargoBuildTask.kt

@@ -167,6 +167,10 @@ open class CargoBuildTask : DefaultTask() {
                 if (toolchain.type != ToolchainType.DESKTOP) {
                     val toolchainDirectory = if (toolchain.type == ToolchainType.ANDROID_PREBUILT) {
                         val ndkPath = app.ndkDirectory
+                        val ndkVersion = ndkPath.name
+                        val ndkVersionMajor = ndkVersion.split(".").first()
+                        environment("CARGO_NDK_MAJOR_VERSION", ndkVersionMajor)
+
                         val hostTag = if (Os.isFamily(Os.FAMILY_WINDOWS)) {
                             if (Os.isArch("x86_64") || Os.isArch("amd64")) {
                                 "windows-x86_64"

plugin/src/main/resources/com/nishtahir/linker-wrapper.py

@@ -7,6 +7,10 @@
 
 args = [os.environ['RUST_ANDROID_GRADLE_CC'], os.environ['RUST_ANDROID_GRADLE_CC_LINK_ARG']] + sys.argv[1:]
 
+# The gcc library is not included in ndk version 23.
+if 23 == int(os.environ['CARGO_NDK_MAJOR_VERSION']):
+    args.remove("-lgcc")
+
 # This only appears when the subprocess call fails, but it's helpful then.
 printable_cmd = ' '.join(pipes.quote(arg) for arg in args)
 print(printable_cmd)