android studio cmake 设置编译so的平台

        externalNativeBuild {
            cmake{
                cppFlags "-frtti -fexceptions -std=gnu++11 -std=c++11 -DFFCMD -DGL_GLEXT_PROTOTYPES=1 -D__STDC_CONSTANT_MACROS"
                cppFlags "-DCONFIG_LIBJPEG_TURBO"
                cFlags "-DFFCMD -DANDROID_ABI=armeabi-v7a"
                abiFilters 'armeabi-v7a'
            }
        }        externalNativeBuild {