inital, almost working cross-compilation setup with Visual Studio and cmake

scripts/build_sdl_linux.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
+SDL_SOURCE="$PROJECT_ROOT/external/SDL"
+BUILD_DIR="$PROJECT_ROOT/out/build/_sdl_build/linux"
+PREBUILT_DIR="$PROJECT_ROOT/prebuilt/linux"
+BUILD_TYPE="${1:-Release}"
+
+build_sdl() {
+    local LINK_TYPE="$1"
+    local SHARED="OFF"
+    local STATIC="OFF"
+
+    if [ "$LINK_TYPE" = "dynamic" ]; then SHARED="ON"; else STATIC="ON"; fi
+
+    local OUT_DIR="$PREBUILT_DIR/SDL3-$LINK_TYPE"
+    local BUILD_OUT="$BUILD_DIR/$LINK_TYPE"
+
+    echo ""
+    echo "=== Building SDL3 ($LINK_TYPE) for Linux ==="
+
+    cmake -S "$SDL_SOURCE" -B "$BUILD_OUT" \
+        -G "Ninja" \
+        -DCMAKE_BUILD_TYPE="$BUILD_TYPE" \
+        -DCMAKE_INSTALL_PREFIX="$OUT_DIR" \
+        -DCMAKE_C_COMPILER=gcc-12 \
+        -DCMAKE_CXX_COMPILER=g++-12 \
+        -DSDL_SHARED="$SHARED" \
+        -DSDL_STATIC="$STATIC" \
+        -DSDL_INSTALL=ON \
+        -DSDL_TEST_LIBRARY=OFF \
+        -DSDL_TESTS=OFF
+
+    cmake --build "$BUILD_OUT"
+    cmake --install "$BUILD_OUT"
+
+    echo "=== Done: $OUT_DIR ==="
+}
+
+# Install build dependencies if needed (Debian 12 bookworm)
+echo "Checking build dependencies..."
+sudo apt-get update -qq
+sudo apt-get install -y --no-install-recommends \
+    ninja-build cmake build-essential \
+    gcc-12 g++-12 \
+    libx11-dev libxext-dev libxrandr-dev libxcursor-dev libxi-dev \
+    libwayland-dev libpulse-dev libasound2-dev \
+    libgl1-mesa-dev
+
+build_sdl "dynamic"
+build_sdl "static"