Various CI improvements

.travis.yml

@@ -10,19 +10,68 @@ matrix:
     - os: osx
     - os: windows
 
-before_script:
+    addons:
+
+addons:
+  artifacts:
+    paths:
+      - build
+  apt:
+    packages:
+      - gcc-multilib
+      - libasound2-dev
+      - libxcursor-dev
+      - libxinerama-dev
+      - mesa-common-dev
+      - libx11-dev
+      - libxrandr-dev
+      - libxrandr2
+      - libxi-dev
+      - libgl1-mesa-dev
+      - libglu1-mesa-dev
+
+before_cache:
+ - |-
+   case $TRAVIS_OS_NAME in
+     windows)
+       # https://unix.stackexchange.com/a/137322/107554
+       $msys2 pacman --sync --clean --noconfirm
+       ;;
+   esac
+
+cache:
+    directories:
+    - $HOME/AppData/Local/Temp/chocolatey
+    - /C/tools/msys64
 
 before_install:
-  - if [ "$TRAVIS_OS_NAME" == "linux" ]; then
-      sudo apt-get install -y gcc-multilib
-                              libasound2-dev:$ARCH
-                              libxcursor-dev:$ARCH libxinerama-dev:$ARCH mesa-common-dev:$ARCH
-                              libx11-dev:$ARCH libxrandr-dev:$ARCH libxrandr2:$ARCH libxi-dev:$ARCH
-                              libgl1-mesa-dev:$ARCH libglu1-mesa-dev:$ARCH;
-    fi
+  - export MAKE=make
+  - |-
+    case $TRAVIS_OS_NAME in
+      windows)
+        [[ ! -f C:/tools/msys64/msys2_shell.cmd ]] && rm -rf C:/tools/msys64
+        choco uninstall -y mingw
+        choco upgrade --no-progress -y msys2
+        export msys2='cmd //C RefreshEnv.cmd '
+        export msys2+='& set MSYS=winsymlinks:nativestrict '
+        export msys2+='& C:\\tools\\msys64\\msys2_shell.cmd -defterm -no-start'
+        export mingw64="$msys2 -mingw64 -full-path -here -c "\"\$@"\" --"
+        export msys2+=" -msys2 -c "\"\$@"\" --"
+        $msys2 pacman --sync --noconfirm --needed mingw-w64-x86_64-toolchain
+        ## Install more MSYS2 packages from https://packages.msys2.org/base here
+        taskkill //IM gpg-agent.exe //F  # https://travis-ci.community/t/4967
+        export PATH=/C/tools/msys64/mingw64/bin:$PATH
+        export MAKE="$mingw64 make" # Change make
+
+        $msys2 pacman -S mingw-w64-x86_64-toolchain
+        ;;
+    esac
   - mkdir build
   - $RUNNER $CC --version
 
+before_script:
+
 script:
-  - $RUNNER make
-  - mv raylua_s* raylua_e* build/
+  - $RUNNER $MAKE
+  - mv raylua_s build/
+  - mv raylua_e build/