check_commands make gcc

# Options in the array below will be disabled unless they are

# explicitly enabled.

availables=( \

video video-opengl loadso render audio joystick haptic power \

filesystem threads timers file cpuinfo)

# Notes about the activation of loadso

#

# When loadso is not activated, when compiling

# using "sdl2-config" --libs to link we get the error:

# libSDL2.a(SDL_dynapi.o): undefined reference to symbol 'dlopen@@GLIBC_2.1'

# The problem is the option -ldl is required but not included by sdl2-config.

#

# In addition, when using an OPENGL window, if the loadso is not available

# the following error is given at runtime:

#

# Could not create window: Failed loading libGL.so.1: SDL_LoadObject() not implemented

#

# We activate therefore the loadso module when opengl is enabled.

#

# The module timers is very important and should be enabled whenever the

# events subsystem is used.

# If timers is disabled and SDL_PollEvent is used the application will use

# 100% of the CPU. In addition the SDL_Delay function will do nothing.

# It could be disabled if events are also disabled but this configuration

# is not currently supported.

# By default we build video, timers and events modules

enables=(video events timers)

needs_loadso=no

disables=(atomic dbus ibus ime fcitx input-tslib render-metal)

audio_disables=(jack arts nas sndio fusionsound diskaudio dummyaudio libsamplerate)

video_disables=(video-{mir,vulkan,directfb,dummy,opengles,opengles1,opengles2,vivante})

if [[ "$OSTYPE" == "linux"* ]]; then

os_audio_enables=(pulseaudio)

os_audio_disables=(oss esd "${audio_disables[@]}")

enables+=(video-x11 video-x11-{xcursor,xrandr})

disables+=(

"${video_disables[@]}" video-wayland \

video-x11-{xdbe,xinerama,scrnsaver,xshape,vm})

elif [[ "$OSTYPE" == "msys"* || "$OSTYPE" == "mingw"* ]]; then

os_audio_enables=()

os_audio_disables=("${audio_disables[@]}")

# On windows the default video driver is directx but windib will

# be used if directx is disabled. Windib is based on GDI32 and doesn't

# need to be explicitly enabled with configure.

disables+=(directx render-d3d "${video_disables[@]}")

elif [[ "$OSTYPE" == "darwin"* ]]; then

enables+=(cocoa)

disables+=("${video_disables[@]}")

fi

options=()

while [ ! -z ${1+x} ]; do

case $1 in

-audio)

enables+=(audio "${os_audio_enables[@]}")

disables+=("${os_audio_disables[@]}")

;;

-opengl)

enables+=(video-opengl)

needs_loadso=yes

;;

-threads)

enables+=(threads)

;;

-joystick)

enables+=(joystick)

;;

-loadso)

needs_loadso=yes

;;

-filesystem)

enables+=(filesystem)

;;

-file)

enables+=(file)

;;

-threads)

enables+=(threads)

;;

-cpuinfo)

enables+=(cpuinfo)

;;

-render)

enables+=(render)

;;

*)

options+=("$1")

;;

esac

shift

done

if [[ $needs_loadso == yes ]]; then

enables+=(loadso)

fi

all_enables="${enables[*]}"

for opt in "${availables[@]}"; do

if [[ " $all_enables " != *" $opt "* ]]; then

disables+=("$opt")

fi

done

for name in "${enables[@]}"; do

options+=("--enable-$name")

done

for name in "${disables[@]}"; do

options+=("--disable-$name")

done

SDL_ARCHIVE_NAME="SDL2-$version"

enter_archive "http://libsdl.org/release/${SDL_ARCHIVE_NAME}.tar.gz"

build_and_install configure "${options[@]}"