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UnrealEngine/Engine/Source/ThirdParty/SDL3/docker/docker-build-sdl3.sh
2025-05-18 13:04:45 +08:00

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#!/bin/bash
## Unreal Engine 4 Build script for SDL3
## Copyright Epic Games, Inc. All Rights Reserved.
# Should be run in docker image, launched something like this (see RunMe.sh script):
# docker run --name ${ImageName} --platform linux/arm64 -v ${SCRIPT_DIR}/../../Vulkan:/Vulkan -v ${SDL_DIR}:/SDL-gui-backend -v ${SCRIPT_DIR}:/src ${Image} /src/docker-build-sdl2.sh
#
# Expects these mapped directories:
# /Vulkan: vulkan sdk
# /SDL-gui-backend: SDL3 source
#
# Built libSDL libraries are in /build directory
DISTRO=${1:-Rocky8}
if [ $UID -eq 0 ]; then
if [ ${DISTRO} == "CentOS7" ]; then
# Centos 7
# first we need to fix up the yum repos since CentOS 7 is EOL and mirrorlist.centos.org is now offline
sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/*.repo
sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/*.repo
sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/*.repo
# now install stuff
yum install -y epel-release
yum install -y cmake3 make gcc-c++
yum install -y libXcursor-devel libXinerama-devel libxi-dev libXrandr-devel libXScrnSaver-devel libXi-devel mesa-libGL-devel mesa-libEGL-devel pulseaudio-libs-devel wayland-protocols-devel wayland-devel libxkbcommon-devel mesa-libwayland-egl-devel alsa-lib-devel libudev-devel
elif [ ${DISTRO} == "Rocky8" ]; then
yum install -y epel-release
yum install -y gcc gcc-c++ git-core make cmake \
alsa-lib-devel pulseaudio-libs-devel pipewire-devel libX11-devel \
libXext-devel libXrandr-devel libXcursor-devel libXfixes-devel \
libXi-devel libXScrnSaver-devel dbus-devel systemd-devel \
mesa-libGL-devel libxkbcommon-devel mesa-libGLES-devel \
mesa-libEGL-devel vulkan-devel wayland-devel wayland-protocols-devel libdrm-devel
else
echo Unsupported distro ${DISTRO}
exit 1
fi
# Create non-privileged user and workspace
adduser buildmaster
mkdir -p /build
chown buildmaster:nobody -R /build
cd /build
exec su buildmaster "$0"
fi
# This will be run from user buildmaster
export VULKAN_SDK=/Vulkan
export SDL_DIR=/SDL-gui-backend
export ARCH=$(uname -m)
# Get num of cores
export CORES=$(getconf _NPROCESSORS_ONLN)
echo Using ${CORES} cores for building
BuildWithOptions()
{
local BuildDir=$1
local StaticLibName=$2
local SdlLibName=$3
local SdlDir=$4
local Cflags="$5"
shift 5
local Options="$@"
rm -rf $BuildDir
mkdir -p $BuildDir
pushd $BuildDir
# Building with OGL breaks SDL_CreateWindow() on embedded devices w/o proper GL libraries
# http://lists.libsdl.org/pipermail/commits-libsdl.org/2017-September/001967.html
if [[ ${ARCH} == 'aarch64' ]]; then
Options+=' -DSDL_VIDEO_OPENGL=OFF'
fi
# first build SDL3 lib
set -x
cmake3 $Options -DCMAKE_C_FLAGS="${Cflags}" $SdlDir
set +x
make -j${CORES}
mv $StaticLibName ../$SdlLibName
popd
}
set -e
OPTS=()
OPTS+=(-DSDL_STATIC=ON)
OPTS+=(-DSDL_SHARED=OFF)
OPTS+=(-DSDL_KMSDRM=OFF)
# build Debug with -fPIC so it's usable in any type of build
BuildWithOptions Debug libSDL3.a libSDL3_fPIC_Debug.a ${SDL_DIR} "-gdwarf-4 -fPIC" -DCMAKE_BUILD_TYPE=Debug -DSDL_STATIC_PIC=ON "${OPTS[@]}"
BuildWithOptions Release libSDL3.a libSDL3.a ${SDL_DIR} "-gdwarf-4" -DCMAKE_BUILD_TYPE=Release "${OPTS[@]}"
BuildWithOptions ReleasePIC libSDL3.a libSDL3_fPIC.a ${SDL_DIR} "-gdwarf-4 -fPIC" -DCMAKE_BUILD_TYPE=Release -DSDL_STATIC_PIC=ON "${OPTS[@]}"
set +e