diff --git a/llvm/utils/gn/build/BUILD.gn b/llvm/utils/gn/build/BUILD.gn
--- a/llvm/utils/gn/build/BUILD.gn
+++ b/llvm/utils/gn/build/BUILD.gn
@@ -269,7 +269,8 @@
     if (current_os == "win") {
       assert(is_clang, "sysroot only works with clang-cl as host compiler")
       cflags += [ "/winsysroot" + rebase_path(sysroot, root_build_dir) ]
-    } else if (current_os != "ios" && current_os != "mac") {
+    } else if (current_os != "ios" && current_os != "mac" &&
+               current_os != "android") {
       cflags += [ "--sysroot=" + rebase_path(sysroot, root_build_dir) ]
     }
   }
diff --git a/llvm/utils/gn/secondary/compiler-rt/BUILD.gn b/llvm/utils/gn/secondary/compiler-rt/BUILD.gn
--- a/llvm/utils/gn/secondary/compiler-rt/BUILD.gn
+++ b/llvm/utils/gn/secondary/compiler-rt/BUILD.gn
@@ -12,10 +12,14 @@
   supported_toolchains = [ "//llvm/utils/gn/build/toolchain:stage2_unix" ]
 }
 if (android_ndk_path != "") {
-  supported_toolchains += [
-    "//llvm/utils/gn/build/toolchain:stage2_android_aarch64",
-    "//llvm/utils/gn/build/toolchain:stage2_android_arm",
-  ]
+  if (llvm_build_AArch64) {
+    supported_toolchains +=
+        [ "//llvm/utils/gn/build/toolchain:stage2_android_aarch64" ]
+  }
+  if (llvm_build_ARM) {
+    supported_toolchains +=
+        [ "//llvm/utils/gn/build/toolchain:stage2_android_arm" ]
+  }
 }
 group("compiler-rt") {
   deps = [ "//compiler-rt/include($host_toolchain)" ]