diff --git a/.travis.yml b/.travis.yml
index 013e42628..bdb054bbc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -117,6 +117,38 @@ matrix:
         - BEFORE_BUILD="wget https://sdk.lunarg.com/sdk/download/1.1.92.1/linux/vulkansdk-linux-x86_64-1.1.92.1.tar.gz?Human=true -O vulkansdk-linux-x86_64-1.1.92.1.tar.gz && tar -xf vulkansdk-linux-x86_64-1.1.92.1.tar.gz && wget https://dl.google.com/android/repository/android-ndk-r19c-linux-x86_64.zip && unzip -q android-ndk-r19c-linux-x86_64.zip"
         - BUILD="export PATH=`pwd`/1.1.92.1/x86_64/bin:$PATH && mkdir build && cd build && cmake -DCMAKE_TOOLCHAIN_FILE=`pwd`/android-ndk-r19c/build/cmake/android.toolchain.cmake -DANDROID_ABI=\"arm64-v8a\" -DANDROID_PLATFORM=android-24 -DNCNN_VULKAN=ON .. && make -j2"
 
+    - name: "android-x86"
+      os: linux
+      dist: xenial
+      env:
+        - NAME=android-x86
+        - BEFORE_BUILD="wget https://dl.google.com/android/repository/android-ndk-r19c-linux-x86_64.zip && unzip -q android-ndk-r19c-linux-x86_64.zip"
+        - BUILD="mkdir build && cd build && cmake -DCMAKE_TOOLCHAIN_FILE=`pwd`/android-ndk-r19c/build/cmake/android.toolchain.cmake -DANDROID_ABI=\"x86\" -DANDROID_ARM_NEON=ON -DANDROID_PLATFORM=android-14 .. && make -j2"
+
+    - name: "android-x86-gpu"
+      os: linux
+      dist: xenial
+      env:
+        - NAME=android-x86-gpu
+        - BEFORE_BUILD="wget https://sdk.lunarg.com/sdk/download/1.1.92.1/linux/vulkansdk-linux-x86_64-1.1.92.1.tar.gz?Human=true -O vulkansdk-linux-x86_64-1.1.92.1.tar.gz && tar -xf vulkansdk-linux-x86_64-1.1.92.1.tar.gz && wget https://dl.google.com/android/repository/android-ndk-r19c-linux-x86_64.zip && unzip -q android-ndk-r19c-linux-x86_64.zip"
+        - BUILD="export PATH=`pwd`/1.1.92.1/x86_64/bin:$PATH && mkdir build && cd build && cmake -DCMAKE_TOOLCHAIN_FILE=`pwd`/android-ndk-r19c/build/cmake/android.toolchain.cmake -DANDROID_ABI=\"x86\" -DANDROID_ARM_NEON=ON -DANDROID_PLATFORM=android-24 -DNCNN_VULKAN=ON .. && make -j2"
+
+    - name: "android-x86_64"
+      os: linux
+      dist: xenial
+      env:
+        - NAME=android-x86_64
+        - BEFORE_BUILD="wget https://dl.google.com/android/repository/android-ndk-r19c-linux-x86_64.zip && unzip -q android-ndk-r19c-linux-x86_64.zip"
+        - BUILD="mkdir build && cd build && cmake -DCMAKE_TOOLCHAIN_FILE=`pwd`/android-ndk-r19c/build/cmake/android.toolchain.cmake -DANDROID_ABI=\"x86_64\" -DANDROID_PLATFORM=android-21 .. && make -j2"
+
+    - name: "android-x86_64-gpu"
+      os: linux
+      dist: xenial
+      env:
+        - NAME=android-x86_64-gpu
+        - BEFORE_BUILD="wget https://sdk.lunarg.com/sdk/download/1.1.92.1/linux/vulkansdk-linux-x86_64-1.1.92.1.tar.gz?Human=true -O vulkansdk-linux-x86_64-1.1.92.1.tar.gz && tar -xf vulkansdk-linux-x86_64-1.1.92.1.tar.gz && wget https://dl.google.com/android/repository/android-ndk-r19c-linux-x86_64.zip && unzip -q android-ndk-r19c-linux-x86_64.zip"
+        - BUILD="export PATH=`pwd`/1.1.92.1/x86_64/bin:$PATH && mkdir build && cd build && cmake -DCMAKE_TOOLCHAIN_FILE=`pwd`/android-ndk-r19c/build/cmake/android.toolchain.cmake -DANDROID_ABI=\"x86_64\" -DANDROID_PLATFORM=android-24 -DNCNN_VULKAN=ON .. && make -j2"
+
     - name: "ios-iphoneos"
       os: osx
       osx_image: xcode9.4
diff --git a/build.sh b/build.sh
index 512c79bce..38354f2cc 100755
--- a/build.sh
+++ b/build.sh
@@ -24,6 +24,22 @@ make
 make install
 popd
 
+##### android x86
+mkdir -p build-android-x86
+pushd build-android-x86
+cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DANDROID_ABI="x86" -DANDROID_PLATFORM=android-19 ..
+make
+make install
+popd
+
+##### android x86_64
+mkdir -p build-android-x86_64
+pushd build-android-x86_64
+cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DANDROID_ABI="x86_64" -DANDROID_PLATFORM=android-21 ..
+make
+make install
+popd
+
 ##### android armv7 vulkan
 mkdir -p build-android-armv7-vulkan
 pushd build-android-armv7-vulkan
@@ -40,6 +56,22 @@ make
 make install
 popd
 
+##### android x86 vulkan
+mkdir -p build-android-x86-vulkan
+pushd build-android-x86-vulkan
+cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DANDROID_ABI="x86" -DANDROID_PLATFORM=android-24 -DNCNN_VULKAN=ON ..
+make
+make install
+popd
+
+##### android x86_64 vulkan
+mkdir -p build-android-x86_64-vulkan
+pushd build-android-x86_64-vulkan
+cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DANDROID_ABI="x86_64" -DANDROID_PLATFORM=android-24 -DNCNN_VULKAN=ON ..
+make
+make install
+popd
+
 ##### linux of hisiv300 (forgot the chip name) toolchain with neon and openmp
 mkdir -p build-hisiv300-linux
 pushd build-hisiv300-linux