ci: use SDL2 zip source archive

.cirrus.yml

@@ -3,6 +3,7 @@ task:
   freebsd_instance:
     image: freebsd-10-4-release-amd64
   setup_script:
+    - git submodule update --init --recursive
     - ./scripts/travis_linux_deps.sh
   test_script:
     - ./scripts/build_freebsd_engine.sh dedicated
@@ -13,6 +14,7 @@ task:
   freebsd_instance:
     image: freebsd-11-3-stable-amd64-v20190801
   setup_script:
+    - git submodule update --init --recursive
     - ./scripts/travis_linux_deps.sh
   test_script:
     - ./scripts/build_freebsd_engine.sh dedicated
@@ -23,6 +25,7 @@ task:
   freebsd_instance:
     image: freebsd-12-0-release-amd64
   setup_script:
+    - git submodule update --init --recursive
     - ./scripts/travis_linux_deps.sh
   test_script:
     - ./scripts/build_freebsd_engine.sh dedicated

.travis.yml

@@ -37,6 +37,7 @@ jobs:
             - libstdc++6:i386
             - libfuse2:i386
             - zlib1g:i386
+            - unzip
       before_script:
         - export ARCH=i686
         - sh scripts/travis_common_deps.sh
@@ -62,6 +63,7 @@ jobs:
             - libasound-dev
             - libstdc++6
             - libfuse2
+            - unzip4
       before_script:
         - export ARCH=x86_64
         - sh scripts/travis_common_deps.sh

scripts/travis_linux_deps.sh

@@ -1,3 +1,4 @@
 # SDL2 sources. We will build our own version
-curl -s http://libsdl.org/release/SDL2-$SDL_VERSION.tar.gz | tar xzf -
+curl http://libsdl.org/release/SDL2-$SDL_VERSION.zip -o SDL2.zip
+unzip -x SDL2.zip
 mv SDL2-$SDL_VERSION SDL2_src