由于权限被拒绝错误，使用ndk的android项目生成失败

我买了一台新的笔记本电脑（预装了macOS Catalina），我正在建立一个现有的android项目，安装了相同版本的ndk，并保持所有设置不变

我试着构建这个项目，然后得到了两个macOS catalina安全提示，与clang和其他ndk二进制文件相关，解决了所有问题

然后做了一个干净的构建，得到了这个错误

Error while executing process /Users/eshwar/Library/Android/sdk/ndk/21.2.6472646/ndk-build with arguments {NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/Users/eshwar/workspace/project/frameworks/runtime-src/proj.android-studio/app/jni/Android.mk NDK_APPLICATION_MK=/Users/eshwar/workspace/project/frameworks/runtime-src/proj.android-studio/app/jni/Application.mk APP_ABI=arm64-v8a NDK_ALL_ABIS=arm64-v8a NDK_DEBUG=1 APP_PLATFORM=android-21 NDK_OUT=/Users/eshwar/workspace/project/frameworks/runtime-src/proj.android-studio/app/build/intermediates/ndkBuild/debug/obj NDK_LIBS_OUT=/Users/eshwar/workspace/project/frameworks/runtime-src/proj.android-studio/app/build/intermediates/ndkBuild/debug/lib NDK_TOOLCHAIN_VERSION=clang -j16 NDK_DEBUG=1 /Users/eshwar/workspace/project/frameworks/runtime-src/proj.android-studio/app/build/intermediates/ndkBuild/debug/obj/local/arm64-v8a/libcocos2djs.so}
[arm64-v8a] Compile++      : cocos2djs_shared <= AppDelegate.cpp

make: execvp: /Users/eshwar/Library/Android/sdk/ndk/21.2.6472646/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++: Permission denied
make: *** [/Users/eshwar/Library/Android/sdk/ndk/21.2.6472646/build/core/build-binary.mk:478: /Users/eshwar/workspace/project/frameworks/runtime-src/proj.android-studio/app/build/intermediates/ndkBuild/debug/obj/local/arm64-v8a/objs-debug/cocos2djs_shared/__/__/__/Classes/AppDelegate.o] Error 127

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尝试使用多个j值。在8核处理器上，如果超过2个，则会出现故障。是否有任何设置可以控制此操作？

请参阅@Michael刚刚尝试使用不同的j值。在我的8核i9笔记本电脑上，任何3或更高版本的东西都会失败。你知道为什么会这样吗

$ /Users/eshwar/Library/Android/sdk/ndk/21.2.6472646/ndk-build NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/Users/eshwar/workspace/ndk-samples/other-builds/ndkbuild/hello-neon/app/Android.mk APP_ABI=armeabi-v7a NDK_ALL_ABIS=armeabi-v7a NDK_DEBUG=1 APP_PLATFORM=android-16 NDK_OUT=/Users/eshwar/workspace/ndk-samples/other-builds/ndkbuild/hello-neon/app/build/intermediates/ndkBuild/arm7Debug/obj NDK_LIBS_OUT=/Users/eshwar/workspace/ndk-samples/other-builds/ndkbuild/hello-neon/app/build/intermediates/ndkBuild/arm7Debug/lib hello-neon  
[armeabi-v7a] Compile thumb  : hello-neon <= helloneon.c
[armeabi-v7a] Compile thumb  : hello-neon <= helloneon-intrinsics.c
[armeabi-v7a] Compile thumb  : cpufeatures <= cpu-features.c
[armeabi-v7a] StaticLibrary  : libcpufeatures.a
[armeabi-v7a] SharedLibrary  : libhello-neon.so

$ /Users/eshwar/Library/Android/sdk/ndk/21.2.6472646/ndk-build NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/Users/eshwar/workspace/ndk-samples/other-builds/ndkbuild/hello-neon/app/Android.mk APP_ABI=armeabi-v7a NDK_ALL_ABIS=armeabi-v7a NDK_DEBUG=1 APP_PLATFORM=android-16 NDK_OUT=/Users/eshwar/workspace/ndk-samples/other-builds/ndkbuild/hello-neon/app/build/intermediates/ndkBuild/arm7Debug/obj NDK_LIBS_OUT=/Users/eshwar/workspace/ndk-samples/other-builds/ndkbuild/hello-neon/app/build/intermediates/ndkBuild/arm7Debug/lib -j16 hello-neon
[armeabi-v7a] Compile thumb  : hello-neon <= helloneon.c
make: execvp: /Users/eshwar/Library/Android/sdk/ndk/21.2.6472646/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang: Permission denied
make: *** [/Users/eshwar/Library/Android/sdk/ndk/21.2.6472646/build/core/build-binary.mk:476: /Users/eshwar/workspace/ndk-samples/other-builds/ndkbuild/hello-neon/app/build/intermediates/ndkBuild/arm7Debug/obj/local/armeabi-v7a/objs-debug/hello-neon//Users/eshwar/workspace/ndk-samples/hello-neon/app/src/main/cpp/helloneon.o] Error 127
make: *** Waiting for unfinished jobs....
[armeabi-v7a] StaticLibrary  : libcpufeatures.a
[armeabi-v7a] Compile thumb  : hello-neon <= helloneon-intrinsics.c

-j [N], --jobs[=N]          Allow N jobs at once; infinite jobs with no arg.