添加build快捷方式

build_for_android.sh

@@ -8,6 +8,8 @@ cd ..
 git clone --depth=50 https://github.com/xiongziliang/ZLMediaKit.git
 cd ZLMediaKit
 mkdir -p android_build
+rm -rf ./build
+ln -s ./android_build build
 cd android_build
 cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/android.toolchain.cmake -DANDROID_NDK=$ANDROID_NDK_ROOT  -DCMAKE_BUILD_TYPE=Release  -DANDROID_ABI="armeabi" -DANDROID_NATIVE_API_LEVEL=android-9
 make -j4

build_for_ios.sh

@@ -8,6 +8,8 @@ cd ..
 git clone --depth=50 https://github.com/xiongziliang/ZLMediaKit.git
 cd ZLMediaKit
 mkdir -p ios_build
+rm -rf ./build
+ln -s ./ios_build build
 cd ios_build
 cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/iOS.cmake -DIOS_PLATFORM=OS
 make -j4

build_for_linux.sh

@@ -14,7 +14,10 @@ cd ..
 git clone --depth=50 https://github.com/xiongziliang/ZLMediaKit.git
 cd ZLMediaKit
 mkdir -p linux_build
+rm -rf ./build
+ln -s ./linux_build build
 cd linux_build
+
 cmake ..
 make -j4
 sudo make install

build_for_mac.sh

@@ -13,6 +13,8 @@ cd ..
 git clone --depth=50 https://github.com/xiongziliang/ZLMediaKit.git
 cd ZLMediaKit
 mkdir -p mac_build
+rm -rf ./build
+ln -s ./mac_build build
 cd mac_build
 cmake .. -DOPENSSL_ROOT_DIR=/usr/local/Cellar/openssl/1.0.2j/
 make -j4