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cross-compilation-cmake-tem…/scripts/bootstrap_sdl_linux.sh
2026-04-03 17:59:19 +02:00

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#!/usr/bin/env bash
# One-time bootstrap: builds SDL3 from source and installs it into prebuilt/linux/.
# Run this once on the Linux remote after cloning. Re-run only when upgrading SDL.
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
SDL_VERSION="${1:-3.2.10}"
BUILD_TYPE="${2:-Release}"
BUILD_DIR="$PROJECT_ROOT/out/build/_sdl_bootstrap/linux"
PREBUILT_DIR="$PROJECT_ROOT/prebuilt/linux"
SDL_SOURCE="$BUILD_DIR/SDL-src"
# Install build dependencies (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
# Download SDL source if not already present
if [ ! -d "$SDL_SOURCE" ]; then
echo ""
echo "=== Downloading SDL3 $SDL_VERSION ==="
mkdir -p "$BUILD_DIR"
curl -L "https://github.com/libsdl-org/SDL/archive/refs/tags/release-${SDL_VERSION}.tar.gz" \
| tar -xz -C "$BUILD_DIR"
mv "$BUILD_DIR/SDL-release-${SDL_VERSION}" "$SDL_SOURCE"
fi
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: $OUT_DIR ==="
}
create_dynamic_symlinks() {
local LIB_DIR="$PREBUILT_DIR/SDL3-dynamic/lib"
local REAL_FILE
REAL_FILE="$(find "$LIB_DIR" -maxdepth 1 -name 'libSDL3.so.*.*' | head -1)"
if [ -z "$REAL_FILE" ]; then
echo "ERROR: No versioned libSDL3.so file found in $LIB_DIR" >&2
exit 1
fi
local REAL_NAME
REAL_NAME="$(basename "$REAL_FILE")"
local SONAME="${REAL_NAME%.*}"
echo ""
echo "=== Creating SDL3 symlinks in $LIB_DIR ==="
echo " $SONAME -> $REAL_NAME"
echo " libSDL3.so -> $SONAME"
ln -sf "$REAL_NAME" "$LIB_DIR/$SONAME"
ln -sf "$SONAME" "$LIB_DIR/libSDL3.so"
echo "=== Done ==="
}
build_sdl "dynamic"
build_sdl "static"
create_dynamic_symlinks