path: root/old-configure

#! /bin/sh
#
# Original version (C) 2000 Pontscho/fresh!mindworkz pontscho@makacs.poliod.hu
# Cleanups all over the place (c) 2001 pl
# Rewritten for mpv in 2014.
#
# This configure script is *not* autoconf-based and has different semantics.
# It attempts to autodetect all settings and options where possible. It is
# possible to override autodetection with the --enable-option/--disable-option
# command line parameters.  --enable-option forces the option on skipping
# autodetection. Yes, this means that compilation may fail and yes, this is not
# how autoconf-based configure scripts behave.
#
# configure generates a series of configuration files:
#  - config.h contains #defines that are used in the C code.
#  - config.mak is included from the Makefiles.
#
# If you want to add a new check for $feature, look at the existing checks
# and try to use helper functions where you can.
#############################################################################

# Prevent locale nonsense from breaking basic text processing utils
export LC_ALL=C

# Store the configure line that was used
configuration="$*"

# Prefer these macros to full length text !
# These macros only return an error code - NO display is done
command_check() {
  echo >> "$TMPLOG"
  echo "$@" >> "$TMPLOG"
  "$@" >> "$TMPLOG" 2>&1
  TMPRES="$?"
  echo >> "$TMPLOG"
  return "$TMPRES"
}

compile_check() {
  source="$1"
  shift
  echo >> "$TMPLOG"
  cat "$source" >> "$TMPLOG"
  echo >> "$TMPLOG"
  echo "$_cc $OURCFLAGS $CFLAGS $source $extra_cflags $_ld_static $extra_ldflags $libs_mplayer -o $TMPEXE $@" >> "$TMPLOG"
  rm -f "$TMPEXE"
  $_cc $OURCFLAGS $CFLAGS "$source" $extra_cflags $_ld_static $extra_ldflags $libs_mplayer -o "$TMPEXE" $@ >> "$TMPLOG" 2>&1
  TMPRES="$?"
  echo >> "$TMPLOG"
  echo >> "$TMPLOG"
  return "$TMPRES"
}

cflag_check() {
    echo "int main(void) { return 0; }" > $TMPC
    compile_check $TMPC $@
}

statement_check() {
    echo "" > $TMPC
    for _header in $1 ; do echo "#include <$_header>" >> $TMPC ; done
    echo "int main(void) { $2; return 0; }" >> $TMPC
    shift 2
    compile_check $TMPC $@
}

pkg_config_add() {
  echo >> "$TMPLOG"
  echo "$_pkg_config --cflags $@" >> "$TMPLOG"
  ctmp=$($_pkg_config --cflags "$@" 2>> "$TMPLOG") || return $?
  echo >> "$TMPLOG"
  echo "$_pkg_config --libs $@" >> "$TMPLOG"
  ltmp=$($_pkg_config --libs "$@" 2>> "$TMPLOG") || return $?
  echo >> "$TMPLOG"
  echo "cflags: $ctmp" >> "$TMPLOG"
  echo "libs: $ltmp" >> "$TMPLOG"
  echo >> "$TMPLOG"
  extra_cflags="$extra_cflags $ctmp"
  libs_mplayer="$libs_mplayer $ltmp"
}

# Display error message, flushes tempfile, exit
die () {
  echo
  echo "Error: $@" >&2
  echo >&2
  rm -f "$TMPEXE" "$TMPC"
  echo "Check \"$TMPLOG\" if you do not understand why it failed."
  exit 1
}

# Use this before starting a check
echocheck() {
  echo "============ Checking for $@ ============" >> "$TMPLOG"
  echo ${_echo_n} "Checking for $@ ... ${_echo_c}"
}

# Use this to echo the results of a check
echores() {
  test "$res_comment" && res_comment="($res_comment)"
  echo "Result is: $@ $res_comment" >> "$TMPLOG"
  echo "##########################################" >> "$TMPLOG"
  echo "" >> "$TMPLOG"
  echo "$@ $res_comment"
  res_comment=""
}

# Check how echo works in this /bin/sh
case $(echo -n) in
  -n)   _echo_n=        _echo_c='\c'    ;;      # SysV echo
  *)    _echo_n='-n '   _echo_c=        ;;      # BSD echo
esac

# setind $a b sets the variable named by the value of the variable a to b
setind() { eval "$1=\"\$2\"" ; }

# Generate --enable-NAME/--disable-NAME options, set $1 to the option value.
# Since shell has no data structures, do a weird statemachine thing.
# Arguments: "_name"($1) "description"($2) "default"($3)
# If "default"($3) is empty, use "auto"
# Option name: a leading "_" in name is stripped, further "_" are changed to "-"
opt_yes_no() {
    _name=$(echo "$1" | sed 's/^_//' | tr _ -)
    _defval="$3"
    test -z "$_defval" && _defval=auto

    case "$_opt_state_mode" in
    init)
        setind "$1" "$_defval"
        ;;
    help)
        if test "$_defval" = yes || test "$_defval" = auto ; then
            _defdesc=enable
            test "$_defval" = auto && _defdesc=auto
            printf "  %-21s  disable $2 [$_defdesc]\n" "--disable-$_name"
            unset _defdesc
        else
            printf "  %-21s  enable $2 [disable]\n" "--enable-$_name"
        fi
        ;;
    parse)
        if test "$_opt_state_name" = "--enable-$_name" ; then
            setind "$1" yes
            _opt_state_known=yes
        elif test "$_opt_state_name" = "--disable-$_name" ; then
            setind "$1" no
            _opt_state_known=yes
        elif test "$_opt_state_name" = "--auto-$_name" ; then
            setind "$1" auto
            _opt_state_known=yes
        fi
        ;;
    esac
    unset _name
    unset _defval
}

options_state_machine() {
    _opt_state_mode=$1
    _opt_state_name=$2
    _opt_state_known=no

    opt_yes_no _gl          "OpenGL video output"
    opt_yes_no _libguess    "libguess"
    opt_yes_no _termios     "termios database for key codes"
    opt_yes_no _iconv       "iconv for encoding conversion"
    opt_yes_no _lirc        "LIRC (remote control) support"
    opt_yes_no _joystick    "joystick support" no
    opt_yes_no _vm          "X video mode extensions"
    opt_yes_no _dvb         "DVB input"
    opt_yes_no _tv          "TV interface (TV/DVB grabbers)" yes
    opt_yes_no _tv_v4l2     "Video4Linux2 TV interface"
    opt_yes_no _libv4l2     "libv4l2"
    opt_yes_no _pvr         "Video4Linux2 MPEG PVR"
    opt_yes_no _smb         "Samba (SMB) input"
    opt_yes_no _lcms2       "LCMS2 support"
    opt_yes_no _bluray      "Blu-ray support"
    opt_yes_no _dvdread     "libdvdread"
    opt_yes_no _dvdnav      "libdvdnav"
    opt_yes_no _enca        "ENCA charset oracle library"
    opt_yes_no _libass      "subtitle rendering with libass"
    opt_yes_no _libavdevice "libavdevice demuxers"
    opt_yes_no _libavfilter "libavfilter"
    opt_yes_no _jpeg        "support for writing JPEG screenshots"
    opt_yes_no _libcdio     "libcdio support"
    opt_yes_no _librubberband "librubberband support"
    opt_yes_no _ffmpeg      "skip FFmpeg/Libav autodetection"
    opt_yes_no _ladspa      "LADSPA plugin support"
    opt_yes_no _libbs2b     "libbs2b audio filter support"
    opt_yes_no _mpg123      " libmpg123 MP3 decoding support"
    opt_yes_no _libavresample "libavresample (preferred over libswresample)"
    opt_yes_no _libswresample "libswresample"
    opt_yes_no _caca        "CACA  video output"
    opt_yes_no _sdl2        "SDL2 video and audio outputs" no
    opt_yes_no _xv          "Xv video output"
    opt_yes_no _vdpau       "VDPAU acceleration"
    opt_yes_no _vaapi       "VAAPI acceleration"
    opt_yes_no _xrandr      "Xrandr support (used for monitor FPS detection)"
    opt_yes_no _xinerama    "Xinerama support"
    opt_yes_no _x11         "X11 video output"
    opt_yes_no _wayland     "Wayland video output"
    opt_yes_no _xss         "support for disabling screensaver via xss"
    opt_yes_no _alsa        "ALSA audio output"
    opt_yes_no _ossaudio    "OSS audio output"
    opt_yes_no _rsound      "RSound audio output"
    opt_yes_no _sndio       "sndio audio output"
    opt_yes_no _pulse       "Pulseaudio audio output"
    opt_yes_no _jack        "JACK audio output"
    opt_yes_no _openal      "OpenAL audio output"
    opt_yes_no _shm         "X11/Xv shared memory"
    opt_yes_no _lua         "Lua scripting"
    opt_yes_no _vapoursynth "VapourSynth filter bridge (Python)"
    opt_yes_no _vapoursynth_lazy "VapourSynth filter bridge (Lua)"
    opt_yes_no _encoding    "encoding functionality" yes
    opt_yes_no _build_man   "building manpage"
}

show_help(){
cat << EOF
Usage: $0 [OPTIONS]...

Configuration:
  -h, --help             display this help and exit

Installation directories:
  --prefix=DIR           prefix directory for installation [/usr/local]
  --bindir=DIR           directory for installing binaries [PREFIX/bin]
  --datadir=DIR          directory for installing machine independent
                         data files (skins, etc) [PREFIX/share/mpv]
  --mandir=DIR           directory for installing man pages [PREFIX/share/man]
  --confdir=DIR          directory for installing configuration files
                         [PREFIX/etc/mpv]

Compilation options:
  --cc=COMPILER          C compiler to build mpv [gcc]
  --pkg-config=PKGCONFIG pkg-config to find some libraries [pkg-config]
  --enable-static        build a statically linked binary
  --disable-debug        compile-in debugging information [enable]
  --disable-optimization compile without -O2 [enable]

Use these options if autodetection fails:
  --extra-cflags=FLAGS   extra CFLAGS
  --extra-ldflags=FLAGS  extra LDFLAGS
  --extra-libs=FLAGS     extra linker flags

Features:
EOF
options_state_machine help
cat << EOF

This configure script is NOT autoconf-based, even though its output is similar.
It will try to autodetect all configuration options. If you --enable an option
it will be forcefully turned on, skipping autodetection. This can break
compilation, so you need to know what you are doing.
EOF
exit 0
} #show_help()

# GOTCHA: the variables below defines the default behavior for autodetection
# and have - unless stated otherwise - at least 2 states : yes no
# If autodetection is available then the third state is: auto
_pkg_config=auto
_cc=auto
test -n "$CC" && _cc="$CC"
_opt=-O2
_prefix="/usr/local"
options_state_machine init
for ac_option do
  case "$ac_option" in
  --help|-help|-h)
    show_help
    ;;
  --prefix=*)
    _prefix=$(echo $ac_option | cut -d '=' -f 2)
    ;;
  --bindir=*)
    _bindir=$(echo $ac_option | cut -d '=' -f 2)
    ;;
  --mandir=*)
    _mandir=$(echo $ac_option | cut -d '=' -f 2)
    ;;
  --confdir=*)
    _confdir=$(echo $ac_option | cut -d '=' -f 2)
    ;;
  --extra-cflags=*)
    extra_cflags="$extra_cflags $(echo $ac_option | cut -d '=' -f 2-)"
    ;;
  --extra-ldflags=*)
    extra_ldflags="$extra_ldflags $(echo $ac_option | cut -d '=' -f 2-)"
    ;;
  --extra-libs=*)
    libs_mplayer=$(echo $ac_option | cut -d '=' -f 2)
    ;;
  --cc=*)
    _cc=$(echo $ac_option | cut -d '=' -f 2)
    ;;
  --pkg-config=*)
    _pkg_config=$(echo $ac_option | cut -d '=' -f 2)
    ;;
  --enable-static)
    _ld_static='-static'
    ;;
  --disable-static)
    _ld_static=''
    ;;
  --enable-optimization)
    _opt='-O2'
    ;;
  --enable-optimization=*)
    _opt=$(echo $_echo_n '-O'$_echo_c; echo $ac_option | cut -d '=' -f 2)
    ;;
  --disable-optimization)
    _opt=
    ;;
  *)
    options_state_machine parse "$ac_option"
    if test "$_opt_state_known" != yes ; then
        echo "Unknown parameter: $ac_option" >&2
        exit 1
    fi
    ;;

  esac
done

test -z "$_bindir"  && _bindir="$_prefix/bin"
test -z "$_mandir"  && _mandir="$_prefix/share/man"
test -z "$_confdir" && _confdir="$_prefix/etc/mpv"

mplayer_tmpdir=$(mktemp -d --tmpdir mpv-configure-XXXX)
test -n "$mplayer_tmpdir" || die "Unable to create tmpdir."
trap 'rm -rf "$mplayer_tmpdir"' EXIT

mkdir old_build 2> /dev/null

TMPLOG="old_build/config.log"

rm -f "$TMPLOG"
echo Parameters configure was run with: > "$TMPLOG"
echo CFLAGS="'$CFLAGS'" PKG_CONFIG_PATH="'$PKG_CONFIG_PATH'" ./configure $configuration >> "$TMPLOG"
echo >> "$TMPLOG"

TMPC="$mplayer_tmpdir/tmp.c"
TMPEXE="$mplayer_tmpdir/tmp"
CONFIG_MAK="$mplayer_tmpdir/config.mak"
CONFIG_H="$mplayer_tmpdir/config.h"

echo > $CONFIG_MAK
echo > $CONFIG_H

test "$_pkg_config" = auto && _pkg_config=pkg-config
test "$_cc" = auto && _cc=cc

extra_cflags="-I. -D_GNU_SOURCE $extra_cflags"

_rst2man=rst2man
test -f "$(which rst2man.py)" && _rst2man=rst2man.py

echocheck "whether to build manpages with rst2man"
if test "$_build_man" = auto ; then
    _build_man=no
    command_check "$_rst2man" --version && _build_man=yes
fi
echores "$_build_man"

echocheck "working compiler"
cflag_check "" || die "Compiler is not functioning correctly. Check your installation and custom CFLAGS $CFLAGS ."
echores "yes"

echocheck "perl"
command_check perl -Mv5.8 -e';' || die "Perl is not functioning correctly or is ancient. Install the latest perl available."
echores yes

echocheck "compiler support of -pipe option"
cflag_check -pipe -I. && _pipe="-pipe" && echores "yes" || echores "no"

addcflags() { cflag_check "$@" && OURCFLAGS="$OURCFLAGS $@" ; }

OURCFLAGS="-std=c99 -Wall $_opt"

addcflags -g -g3 -ggdb
addcflags -Wundef -Wmissing-prototypes -Wshadow -Wno-switch -Wparentheses -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Werror=implicit-function-declaration -Wno-error=deprecated-declarations -Wno-error=unused-function
# clang
addcflags -Wno-logical-op-parentheses -fcolor-diagnostics -Wno-tautological-compare -Wno-tautological-constant-out-of-range-compare
# extra
addcflags -Wno-format-zero-length -Wempty-body -Wdisabled-optimization -Wstrict-prototypes

cflag_check -MD -MP && DEPFLAGS="-MD -MP"
cflag_check -lm && _ld_lm="-lm"

extra_ldflags="$extra_ldflags $LDFLAGS"
extra_cflags="$extra_cflags $CPPFLAGS"

# If $1 is "yes", define $2 as 1 in config.h, else define it as 0
define_yes_no() {
    if test "$1" = yes ; then
        echo "#define $2 1" >> $CONFIG_H
    else
        echo "#define $2 0" >> $CONFIG_H
    fi
}

# Write the results of a check to config.mak/.h.
# Arguments: "yes/no"($1) "name"($2)
check_yes_no() {
    define_yes_no $1 "HAVE_$2"
    echo "$2 = $1" >> $CONFIG_MAK
}

check_trivial() {
    echocheck "$1"
    check_yes_no $2 $3
    echores "$2"
}

# Arguments: "message"($1) "setting"($2) "name"($3) "code"($4)
# Also, $5 - $N can be libraries needed - it'll try each separately.
# Use " " as first entry if you want to try with no libraries too.
check_compile() {
    _res="$2"
    _name="$3"
    _code="$4"
    echocheck "$1"
    if test $_res = auto ; then
        _res=no
        if test $# -gt 4 ; then
            shift 4
        else
            shift $#
        fi
        while true ; do
            compile_check "$_code" "$1" && libs_mplayer="$libs_mplayer $1" && _res=yes && break
            test -z "$1" && break
            shift
        done
    fi
    check_yes_no $_res $_name
    echores $_res
    test $_res = yes && return 0 || return 1
}

# Arguments: "message"($1) "setting"($2) "name"($3) "include"($4) "statement"($5)
# Also, $6 - $N can be libraries needed - it'll try each separately.
# Use " " as first entry if you want to try with no libraries too.
check_statement_libs() {
    _res="$2"
    _name="$3"
    _inc="$4"
    _st="$5"
    echocheck "$1"
    if test $_res = auto ; then
        _res=no
        if test $# -gt 5 ; then
            shift 5
        else
            shift $#
        fi
        while true ; do
            statement_check "$_inc" "$_st" "$1" && libs_mplayer="$libs_mplayer $1" && _res=yes && break
            test -z "$1" && break
            shift
        done
    fi
    check_yes_no $_res $_name
    echores $_res
    test $_res = yes && return 0 || return 1
}

# Print "yes" if previous command succeeded, else "no"
defretval() { # shell is retarded?
    if test $? = 0 ; then
        echo "yes"
    else
        echo "no"
    fi
}

echocheck "dynamic loader"
_dl=no
for _ld_tmp in "" "-ldl"; do
  statement_check dlfcn.h 'dlopen("", 0)' $_ld_tmp && _ld_dl="$_ld_tmp" && _dl=yes && break
done
define_yes_no $_dl HAVE_LIBDL
echores "$_dl"

echocheck "pthread"
cflag_check -pthread && _ld_pthread="$_ld_pthread -pthread"
cflag_check -lpthread && _ld_pthread="$_ld_pthread -lpthread"
cflag_check -lrt && _ld_pthread="$_ld_pthread -lrt"
extra_cflags="$extra_cflags -D_REENTRANT -D_THREAD_SAFE"
compile_check waftools/fragments/pthreads.c "$_ld_pthread" || die "Unable to find pthreads support."
echores "yes"

check_statement_libs "support for stdatomic.h" auto STDATOMIC \
    stdatomic.h 'atomic_int_least64_t test = ATOMIC_VAR_INIT(123); int test2 = atomic_load(&test)' \
    " " "-latomic"
_stdatomic=$(defretval)

_atomic=auto
test "$_stdatomic" = yes && _atomic=no
check_statement_libs "compiler support for __atomic built-ins" $_atomic ATOMIC_BUILTINS \
    stdint.h 'int64_t test = 0; test = __atomic_add_fetch(&test, 1, __ATOMIC_SEQ_CST)' \
    " " "-latomic"
_atomic=$(defretval)

_sync=auto
(test "$_atomic" = yes || test "$_stdatomic" = yes ) && _sync=no
check_statement_libs "compiler support for __sync built-ins" $_sync SYNC_BUILTINS \
    stdint.h 'int64_t test = 0; test = __sync_add_and_fetch(&test, 1)'
_sync=$(defretval)

if test "$_atomic" = no && test "$_sync" = no && test "$_stdatomic" = no ; then
  echo "your compiler must support either stdatomic.h, or __atomic, or __sync built-ins."
fi

check_compile "iconv" $_iconv ICONV waftools/fragments/iconv.c " " "-liconv" "-liconv $_ld_dl"
_iconv=$(defretval)
if test "$_iconv" != yes ; then
    die "Unable to find iconv which should be part of standard compilation environment. Aborting. If you really mean to compile without iconv support use --disable-iconv."
fi

_soundcard_header=sys/soundcard.h
_check_snd=yes
check_statement_libs "sys/soundcard.h" auto SYS_SOUNDCARD_H sys/soundcard.h
test $(defretval) = yes && _soundcard_header=sys/soundcard.h && _check_snd=no
check_statement_libs "soundcard.h" $_check_snd SOUNDCARD_H soundcard.h
test $(defretval) = yes && _soundcard_header=soundcard.h

check_statement_libs "sys/videoio.h" auto SYS_VIDEOIO_H sys/videoio.h

_termios_ok=no
check_statement_libs "termios.h" $_termios TERMIOS_H termios.h
test $(defretval) = yes && _termios_ok=yes && _termios=no
check_statement_libs "sys/termios.h" $_termios SYS_TERMIOS_H 'sys/termios.h'
test $(defretval) = yes && _termios_ok=yes
define_yes_no $_termios_ok HAVE_TERMIOS

check_statement_libs "shm" $_shm SHM "sys/types.h sys/ipc.h sys/shm.h" \
    "shmget(0, 0, 0); shmat(0, 0, 0); shmctl(0, 0, 0);"

echocheck "pkg-config"
if $($_pkg_config --version > /dev/null 2>&1); then
  if test "$_ld_static"; then
    _pkg_config="$_pkg_config --static"
  fi
  echores "yes"
else
  _pkg_config=false
  echores "no"
fi

# Arguments: "message"($1) "setting"($2) "name"($3) "pkg-config string"($4)
# The name will be used as "#define HAVE_$name 1/0" in config.h, and as
# "$name = yes/no" in config.mak
# "setting"($2) is yes/no/auto and represents the --enable/--disable option
check_pkg_config() {
    echocheck "$1"
    _res=$2
    if test "$2" = auto ; then
        _res=no
        if pkg_config_add "$4" ; then
            _res=yes
        fi
    fi
    check_yes_no $_res $3
    echores "$_res"
    test $_res = yes && return 0 || return 1
}

check_pkg_config "libguess support" $_libguess LIBGUESS 'libguess >= 1.0'

check_pkg_config "Samba support (libsmbclient)" $_smb LIBSMBCLIENT 'smbclient >= 0.2.0'

_wlver="1.6.0"
check_pkg_config "Wayland" $_wayland WAYLAND "wayland-client >= $_wlver wayland-cursor >= $_wlver xkbcommon >= 0.3.0"
_wayland=$(defretval)

check_pkg_config "X11" $_x11 X11 "x11"
_x11=$(defretval)

# Disable X11 dependencies
_xext=auto
if test "$_x11" = no ; then
    _xss=no
    _xext=no
    _xv=no
    _vdpau=no
    _vaapi=no
    _xinerama=no
    _vm=no
fi

check_pkg_config "Xss screensaver extensions" $_xss XSS "xscrnsaver"

check_pkg_config "X extensions" $_xext XEXT "xext"

check_pkg_config "Xv" $_xv XV "xv"

check_pkg_config "VDPAU" $_vdpau VDPAU "vdpau >= 0.2"
_vdpau=$(defretval)
define_yes_no $_vdpau HAVE_VDPAU_HWACCEL

check_pkg_config "VAAPI" $_vaapi VAAPI 'libva >= 0.32.0 libva-x11 >= 0.32.0'
_vaapi=$(defretval)
define_yes_no $_vaapi HAVE_VAAPI_HWACCEL

if test "$_vaapi" = yes ; then
    check_pkg_config "VAAPI VPP" auto VAAPI_VPP 'libva >= 0.34.0'
else
    check_yes_no no VAAPI_VPP
fi

check_pkg_config "Xinerama" $_xinerama XINERAMA 'xinerama'

check_pkg_config "Xrandr" $_xrandr XRANDR 'xrandr >= 1.2.0'

check_pkg_config "CACA" $_caca CACA 'caca >= 0.99.beta18'

check_compile "DVB" $_dvb DVB waftools/fragments/dvb.c
_dvbin=$(defretval)
check_yes_no $_dvbin DVBIN

check_statement_libs "JPEG support" $_jpeg JPEG "stdio.h jpeglib.h" "" "-ljpeg $_ld_lm"

_gl_x11_egl=no
(test "$_x11" = no && test "$_wayland" = no) && _gl=no
echocheck "OpenGL"
#Note: this test is run even with --enable-gl since we autodetect linker flags
if test "$_gl" != no ; then
  cat > $TMPC << EOF
#if defined(GL_WAYLAND) || defined(EGL_X11)
#include <EGL/egl.h>
#else
#include <X11/Xlib.h>
#include <GL/glx.h>
#endif
#include <GL/gl.h>
#include <GL/glext.h>
int main(int argc, char *argv[]) {
#if defined(GL_WAYLAND)
  eglCreateContext(NULL, NULL, EGL_NO_CONTEXT, NULL);
#else
  glXCreateContext(NULL, NULL, NULL, True);
#endif
  glFinish();
  return !GL_INVALID_FRAMEBUFFER_OPERATION; // check correct glext.h
}
EOF
  _gl=no
  if test "$_x11" = yes ; then
    for _ld_tmp in "" -lGL "-lGL -lXdamage" "-lGL $_ld_pthread" ; do
      if compile_check $TMPC $_ld_tmp $_ld_lm ; then
        _gl=yes
        _gl_x11=yes
        libs_mplayer="$libs_mplayer $_ld_tmp $_ld_dl"
        test "$_gl_x11" = yes && res_comment="$res_comment x11"
        break
      fi
    done
  fi
  if test "$_wayland" = yes && compile_check $TMPC -DGL_WAYLAND -lGL -lEGL &&
      pkg_config_add "wayland-egl >= 9.0.0"; then
    _gl=yes
    _gl_wayland=yes
    libs_mplayer="$libs_mplayer -lGL -lEGL"
    test "$_gl_wayland" = yes && res_comment="$res_comment wayland"
  fi
  if test "$_x11" = yes && test "$_gl" = yes && pkg_config_add "egl"; then
    _gl_x11_egl=yes
    res_comment="$res_comment x11egl"
  fi
else
  _gl=no
fi

if test "$_gl" = no ; then
    _gl_x11=no
    _gl_wayland=no
    _gl_x11_egl=no
fi
check_yes_no $_gl GL
check_yes_no $_gl_x11 GL_X11
check_yes_no $_gl_x11_egl EGL_X11
check_yes_no $_gl_wayland GL_WAYLAND
echores "$_gl"

echocheck "VDPAU with OpenGL/X11"
_vdpau_gl_x11=no
(test "$_gl_x11" = yes && test "$_vdpau" = yes) && _vdpau_gl_x11=yes
check_yes_no $_vdpau_gl_x11 VDPAU_GL_X11
echores "$_vdpau_gl_x11"

_vaapi_glx=no
(test "$_gl_x11" = yes && test "$_vaapi" = yes) && _vaapi_glx=auto
check_pkg_config "VAAPI with OpenGL/X11" $_vaapi_glx VAAPI_GLX 'libva-glx >= 0.32.0'

check_pkg_config "SDL 2.0" $_sdl2 SDL2 'sdl2'

check_statement_libs "OSS Audio" $_ossaudio OSS_AUDIO $_soundcard_header "int x = SNDCTL_DSP_SETFRAGMENT;"

check_statement_libs "RSound" $_rsound RSOUND rsound.h 'rsd_init(NULL);' -lrsound

check_statement_libs "sndio" $_sndio SNDIO sndio.h 'struct sio_par par; sio_initpar(&par); const char *s = SIO_DEVANY' -lsndio

check_pkg_config "PulseAudio" $_pulse PULSE 'libpulse >= 1.0'

check_pkg_config "JACK" $_jack JACK 'jack'

check_pkg_config "OpenAL" $_openal OPENAL 'openal >= 1.13'

check_pkg_config "ALSA audio" $_alsa ALSA 'alsa >= 1.0.9'

check_pkg_config "Blu-ray support" $_bluray LIBBLURAY 'libbluray >= 0.2.1'

check_pkg_config "dvdread" $_dvdread DVDREAD 'dvdread >= 4.1.0'

check_pkg_config "dvdnav" $_dvdnav DVDNAV 'dvdnav >= 4.2.0'

check_pkg_config "libcdio" $_libcdio CDDA 'libcdio_paranoia'

check_pkg_config "rubberband" $_librubberband RUBBERBAND 'rubberband'

_oldass=$_libass
check_pkg_config "SSA/ASS support" $_libass LIBASS 'libass'
_libass=$(defretval)
if test $_oldass != no && test $_libass = no ; then
    die "Unable to find development files for libass. Aborting. If you really mean to compile without libass support use --disable-libass."
fi

_dummy_osd=yes
test $_libass = yes && _dummy_osd=no
echo "LIBASS_OSD = $_libass" >> $CONFIG_MAK
echo "DUMMY_OSD = $_dummy_osd" >> $CONFIG_MAK

check_pkg_config "ENCA" $_enca ENCA 'enca'

check_pkg_config "zlib" auto ZLIB 'zlib'
test $(defretval) = no && die "Unable to find development files for zlib."

check_pkg_config "mpg123 support" $_mpg123 MPG123 'libmpg123 >= 1.14.0'

test "$_dl" = no && _ladspa=no
check_statement_libs "LADSPA plugin support" $_ladspa LADSPA ladspa.h 'LADSPA_Descriptor ld = {0}'

check_pkg_config "libbs2b audio filter support" $_libbs2b LIBBS2B 'libbs2b'

check_pkg_config "LCMS2 support" $_lcms2 LCMS2 'lcms2 >= 2.6'

check_pkg_config "FFmpeg/Libav" $_ffmpeg FFMPEG \
    "libavutil >= 54.02.0 libavcodec >= 56.1.0 libavformat >= 56.01.0 libswscale >= 2.1.3"
test $(defretval) = no && die "Unable to find development files for some of the required Libav libraries above. Aborting."

check_pkg_config "Libswresample" $_libswresample LIBSWRESAMPLE 'libswresample >= 1.1.100'
_libswresample=$(defretval)

_libavresample=auto
test $_libswresample = yes && _libavresample=no
check_pkg_config "Libavresample" $_libavresample LIBAVRESAMPLE 'libavresample >= 2.1.0'
_libavresample=$(defretval)

if test "$_libswresample" = no && test "$_libavresample" = no ; then
  die "No resampler found. Install libavresample or libswresample (FFmpeg)."
fi

# Arguments: "message"($1) "define"($2) "header"($3) "code"($4)
api_statement_check() {
    echocheck "$1"
    _res=no
    statement_check "$3" "$4" && _res=yes
    define_yes_no $_res "$2"
    echores "$_res"
}

api_statement_check \
    "libavcodec avcodec_enum_to_chroma_pos API" \
    HAVE_AVCODEC_CHROMA_POS_API \
    libavcodec/avcodec.h \
    'int x, y; avcodec_enum_to_chroma_pos(&x, &y, AVCHROMA_LOC_UNSPECIFIED)'

api_statement_check \
    "libavutil AVFrame metadata" \
    HAVE_AVFRAME_METADATA \
    libavutil/frame.h \
    'av_frame_get_metadata(NULL)'

api_statement_check \
    "libavutil AVFrame skip samples metadata" \
    HAVE_AVFRAME_SKIP_SAMPLES \
    libavutil/frame.h \
    'enum AVFrameSideDataType type = AV_FRAME_DATA_SKIP_SAMPLES'

check_pkg_config "libavfilter" $_libavfilter LIBAVFILTER 'libavfilter >= 5.0.0'

check_pkg_config "libavdevice" $_libavdevice LIBAVDEVICE 'libavdevice >= 55.0.0'

check_trivial "TV interface" $_tv TV

check_statement_libs "Video 4 Linux 2 TV interface" $_tv_v4l2 TV_V4L2 \
    "sys/time.h linux/videodev2.h"
_tv_v4l2=$(defretval)
check_trivial "TV audio input" $_tv_v4l2 AUDIO_INPUT

test $_tv_v4l2 = no && _libv4l2=no
check_pkg_config "libv4l2 support" $_libv4l2 LIBV4L2 'libv4l2'

test "$_tv_v4l2" = no && _pvr=no
check_compile "Video 4 Linux 2 MPEG PVR interface" $_pvr PVR waftools/fragments/pvr.c

# Note: Lua has no official .pc file, so there are different OS-specific ones.
# Also, we support luajit, which is compatible to 5.1.

test_lua() {
    if test "$_lua" = auto && $_pkg_config "$1" ; then
        check_pkg_config "Lua ($1)" $_lua LUA "$1"
        _lua=$(defretval)
    fi
}

test_lua "lua >= 5.1.0 lua < 5.2.0"
test_lua "lua5.1 >= 5.1.0" # debian
test_lua "luajit >= 2.0.0"
test_lua "lua >= 5.2.0"
test_lua "lua5.2 >= 5.2.0" # debian

test "$_lua" != yes && check_yes_no no LUA

if ! ( $_pkg_config 'vapoursynth >= 24' ) ; then
    _vapoursynth=no
    _vapoursynth_lazy=no
fi
check_pkg_config "VapourSynth support (Python)" $_vapoursynth VAPOURSYNTH 'vapoursynth >= 23 vapoursynth-script >= 23'
_vapoursynth=$(defretval)
if test "$_lua" = no ; then
    _vapoursynth_lazy=no