Allow for cross-build to be absolute.

Author: freakboy3742

Android/android.py

@@ -906,7 +906,7 @@ def add_parser(*args, **kwargs):
         help="Delete build directories for the selected target"
     )
 
-    add_parser("build-testbed", help="Build the testbed app")
+    build_testbed = add_parser("build-testbed", help="Build the testbed app")
     test = add_parser("test", help="Run the testbed app")
     package = add_parser("package", help="Make a release package")
     ci = add_parser("ci", help="Run build, package and test")
@@ -922,6 +922,7 @@ def add_parser(*args, **kwargs):
         make_host,
         build,
         package,
+        build_testbed,
         test,
         ci,
     ]:

Android/testbed/app/build.gradle.kts

@@ -8,8 +8,9 @@ plugins {
 
 val ANDROID_DIR = file("../..")
 val PYTHON_DIR = ANDROID_DIR.parentFile!!
+val CROSS_BUILD_DIR = System.getenv("CROSS_BUILD_DIR") ?: "cross-build"
 val PYTHON_CROSS_DIR = file(
-    "$PYTHON_DIR/" + (System.getenv("CROSS_BUILD_DIR") ?: "cross-build")
+    if ((File(CROSS_BUILD_DIR)).isAbsolute) CROSS_BUILD_DIR else "$PYTHON_DIR/$CROSS_BUILD_DIR"
 )
 val inSourceTree = (
     ANDROID_DIR.name == "Android" && file("$PYTHON_DIR/pyconfig.h.in").exists()