Downgrade package to stable version 1.4

source.sh

@@ -2,7 +2,7 @@
 # BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
 # BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT
 
-DOWNLOAD="https://github.com/supertuxkart/stk-code/releases/download/${BPM_PKG_VERSION}/SuperTuxKart-${BPM_PKG_VERSION}-src.tar.gz"
+DOWNLOAD="https://github.com/supertuxkart/stk-code/releases/download/${BPM_PKG_VERSION}/SuperTuxKart-${BPM_PKG_VERSION}-src.tar.xz"
 FILENAME="${DOWNLOAD##*/}"
 
 # The prepare function is executed in the root of the temp directory
@@ -10,6 +10,14 @@ FILENAME="${DOWNLOAD##*/}"
 prepare() {
   wget "$DOWNLOAD"
   tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
+
+  cd "$BPM_SOURCE"
+  # Apply patch to fix cmake 4 compatibility and warnings (Patches from gentoo)
+  patch -Np1 -i "$BPM_WORKDIR"/fix-cmake-4-compatibility.patch
+  patch -Np1 -i "$BPM_WORKDIR"/fix-cmake-4-warnings.patch
+  # Apply patch to fix gcc 13 and gcc 15 compatibility (Patch from gentoo)
+  patch -Np1 -i "$BPM_WORKDIR"/gcc-13.patch
+  patch -Np1 -i "$BPM_WORKDIR"/gcc-15.patch
 }
 
 # The build function is executed in the source directory
@@ -18,6 +26,8 @@ build() {
   mkdir build
   cd build
 
+  export CFLAGS="${CFLAGS} -std=gnu17"
+  export CXXFLAGS="${CXXFLAGS} -std=gnu17"
   cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -DBUILD_RECORDER=off -GNinja ..
   cmake --build .
 }