fix Dockerfile

Dockerfile

@@ -28,6 +28,6 @@ RUN apt-get autoremove -y && apt-get clean
 RUN pip install --upgrade pip
 RUN pip install wheel && pip install pre-commit
 RUN ln -s clang-format-5.0 /usr/bin/clang-format
-# RUN cd /tmp && curl -O http://mirrors.neusoft.edu.cn/android/repository/android-ndk-r17b-linux-x86_64.zip
-# RUN cd /opt && unzip /tmp/android-ndk-r17b-linux-x86_64.zip
-# ENV NDK_ROOT /opt/android-ndk-r17b
+RUN cd /tmp && curl -O http://mirrors.neusoft.edu.cn/android/repository/android-ndk-r17b-linux-x86_64.zip
+RUN cd /opt && unzip /tmp/android-ndk-r17b-linux-x86_64.zip
+ENV NDK_ROOT /opt/android-ndk-r17b

src/operators/kernel/central-arm-func/batchnorm_arm_func.h

@@ -16,6 +16,7 @@ limitations under the License. */
 
 #pragma once
 
+#include <cmath>
 #include "operators/op_param.h"
 
 namespace paddle_mobile {

tools/android-cmake/android.toolchain.cmake

@@ -37,7 +37,7 @@
 # ANDROID_DISABLE_FORMAT_STRING_CHECKS
 # ANDROID_CCACHE
 
-cmake_minimum_required(VERSION 3.6.0)
+# cmake_minimum_required(VERSION 3.6.0)
 
 # Inhibit all of CMake's own NDK handling code.
 set(CMAKE_SYSTEM_VERSION 1)