Update CI script

.github/workflows/main.yml

@@ -27,6 +27,17 @@ jobs:
       with:
         java-version: 8
 
+    - name: Set environment variables (Linux/macOS)
+      if: ${{ !startsWith(matrix.os, 'windows-') }}
+      run: |
+        echo "HXCPP_COMPILE_CACHE=~/.hxcpp" >> $GITHUB_ENV
+        echo "ANDROID_NDK_ROOT=~/.android-ndk-r15c" >> $GITHUB_ENV
+
+    - name: Set environment variables (Windows)
+      if: ${{ startsWith(matrix.os, 'windows-') }}
+      run: |
+        echo "HXCPP_COMPILE_CACHE=C:\.hxcpp" >> $GITHUB_ENV
+
     - name: Install Haxe dependencies
       run: |
         haxelib install hxcpp 4.0.64 --quiet
@@ -39,16 +50,6 @@ jobs:
       run: |
         sudo apt-get install -y libgl1-mesa-dev libglu1-mesa-dev g++-multilib gcc-multilib libasound2-dev libx11-dev libxext-dev libxi-dev libxrandr-dev libxinerama-dev
 
-    - name: Configure HXCPP compile cache (Linux/macOS)
-      if: ${{ !startsWith(matrix.os, 'windows-') }}
-      run: |
-        echo "HXCPP_COMPILE_CACHE=~/.hxcpp" >> $GITHUB_ENV
-
-    - name: Configure HXCPP compile cache (Windows)
-      if: ${{ startsWith(matrix.os, 'windows-') }}
-      run: |
-        echo "HXCPP_COMPILE_CACHE=C:\.hxcpp" >> $GITHUB_ENV
-
     - name: Install "lime" command alias (Linux/macOS)
       if: ${{ !startsWith(matrix.os, 'windows-') }}
       run: |
@@ -65,12 +66,12 @@ jobs:
     - name: Configure Android support (Linux)
       if: ${{ startsWith(matrix.os, 'ubuntu-') }}
       run: |
-        mkdir -p ~/.android-ndk-r15c
+        mkdir -p $ANDROID_NDK_ROOT
         wget -O android-ndk.zip --quiet https://dl.google.com/android/repository/android-ndk-r15c-linux-x86_64.zip
-        unzip -qq android-ndk.zip -d ~/.android-ndk-r15c/..
+        unzip -qq android-ndk.zip -d $ANDROID_NDK_ROOT/..
         rm android-ndk.zip
         lime config ANDROID_SDK $ANDROID_HOME
-        haxelib run lime config ANDROID_NDK_ROOT ~/.android-ndk-r15c
+        haxelib run lime config ANDROID_NDK_ROOT $ANDROID_NDK_ROOT
         haxelib run lime config JAVA_HOME $JAVA_HOME
         haxelib run lime config ANDROID_SETUP true
         haxelib run lime config