configure: Mark qsv subsystem as not selectable on the command line
[ffmpeg.git] / configure
index 6736f76..f5e8b67 100755 (executable)
--- a/configure
+++ b/configure
@@ -86,6 +86,7 @@ Standard options:
   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
   --incdir=DIR             install includes in DIR [PREFIX/include]
   --mandir=DIR             install man page in DIR [PREFIX/share/man]
+  --enable-rpath           use rpath when linking programs [USE WITH CARE]
 
 Licensing options:
   --enable-gpl             allow use of GPL code, the resulting libs
@@ -129,6 +130,7 @@ Component options:
   --disable-mdct           disable MDCT code
   --disable-rdft           disable RDFT code
   --disable-fft            disable FFT code
+  --disable-faan           disable floating point AAN (I)DCT code
 
 Hardware accelerators:
   --enable-dxva2           enable DXVA2 code
@@ -187,10 +189,12 @@ External library support:
   --enable-libfreetype     enable libfreetype [no]
   --enable-libgsm          enable GSM de/encoding via libgsm [no]
   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
+  --enable-libmfx          enable HW acceleration through libmfx
   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
   --enable-libopencv       enable video filtering via libopencv [no]
+  --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
   --enable-libopus         enable Opus de/encoding via libopus [no]
   --enable-libpulse        enable Pulseaudio input via libpulse [no]
@@ -208,10 +212,13 @@ External library support:
   --enable-libx264         enable H.264 encoding via x264 [no]
   --enable-libx265         enable HEVC encoding via x265 [no]
   --enable-libxavs         enable AVS encoding via xavs [no]
+  --enable-libxcb          enable X11 grabbing using XCB [no]
+  --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
+  --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
   --enable-libxvid         enable Xvid encoding via xvidcore,
                            native MPEG-4/Xvid encoder exists [no]
   --enable-openssl         enable openssl [no]
-  --enable-x11grab         enable X11 grabbing [no]
+  --enable-x11grab         enable X11 grabbing (legacy) [no]
   --enable-zlib            enable zlib [autodetect]
 
 Toolchain options:
@@ -1065,7 +1072,7 @@ check_host_cpp(){
     log check_host_cpp "$@"
     cat > $TMPC
     log_file $TMPC
-    check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
+    check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
 }
 
 check_host_cppflags(){
@@ -1130,6 +1137,7 @@ EXAMPLE_LIST="
     filter_audio_example
     metadata_example
     output_example
+    qsvdec_example
     transcode_aac_example
 "
 
@@ -1147,10 +1155,12 @@ EXTERNAL_LIBRARY_LIST="
     libfreetype
     libgsm
     libilbc
+    libmfx
     libmp3lame
     libopencore_amrnb
     libopencore_amrwb
     libopencv
+    libopenh264
     libopenjpeg
     libopus
     libpulse
@@ -1168,6 +1178,9 @@ EXTERNAL_LIBRARY_LIST="
     libx264
     libx265
     libxavs
+    libxcb
+    libxcb_shm
+    libxcb_xfixes
     libxvid
     openssl
     x11grab
@@ -1219,6 +1232,7 @@ SUBSYSTEM_LIST="
     dct
     doc
     error_resilience
+    faan
     fft
     lsp
     lzo
@@ -1431,6 +1445,7 @@ MATH_FUNCS="
 
 SYSTEM_FUNCS="
     aligned_malloc
+    clock_gettime
     closesocket
     CommandLineToArgvW
     CoTaskMemFree
@@ -1449,6 +1464,7 @@ SYSTEM_FUNCS="
     getservbyport
     GetSystemTimeAsFileTime
     gettimeofday
+    gmtime_r
     inet_aton
     isatty
     jack_port_get_latency_range
@@ -1477,6 +1493,7 @@ SYSTEM_FUNCS="
 TOOLCHAIN_FEATURES="
     as_dn_directive
     as_func
+    as_object_arch
     asm_mod_q
     attribute_may_alias
     attribute_packed
@@ -1494,6 +1511,8 @@ TOOLCHAIN_FEATURES="
 "
 
 TYPES_LIST="
+    CONDITION_VARIABLE_Ptr
+    DXVA_PicParams_HEVC
     socklen_t
     struct_addrinfo
     struct_group_source_req
@@ -1530,7 +1549,9 @@ HAVE_LIST="
     libdc1394_1
     libdc1394_2
     sdl
+    section_data_rel_ro
     threads
+    vaapi_x11
     vdpau_x11
     xlib
 "
@@ -1545,7 +1566,10 @@ CONFIG_EXTRA="
     bswapdsp
     cabac
     dvprofile
+    faandct
+    faanidct
     fdctdsp
+    fmtconvert
     gcrypt
     golomb
     gplv3
@@ -1560,6 +1584,7 @@ CONFIG_EXTRA="
     huffyuvencdsp
     idctdsp
     iirfilter
+    imdct15
     intrax8
     lgplv3
     lpc
@@ -1572,15 +1597,18 @@ CONFIG_EXTRA="
     nettle
     pixblockdsp
     qpeldsp
+    qsv
     rangecoder
     riffdec
     riffenc
     rtpdec
     rtpenc_chain
     sinewin
+    startcode
     tpeldsp
     videodsp
     vp3dsp
+    wma_freqs
 "
 
 CMDLINE_SELECT="
@@ -1595,6 +1623,7 @@ CMDLINE_SELECT="
     logging
     lto
     optimizations
+    rpath
 "
 
 PATHS_LIST="
@@ -1720,6 +1749,8 @@ threads_if_any="$THREADS_LIST"
 # subsystems
 dct_select="rdft"
 error_resilience_select="me_cmp"
+faandct_deps="faan fdctdsp"
+faanidct_deps="faan idctdsp"
 intrax8_select="error_resilience"
 mdct_select="fft"
 rdft_select="fft"
@@ -1731,10 +1762,10 @@ mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
 
 # decoders / encoders
-aac_decoder_select="mdct sinewin"
+aac_decoder_select="imdct15 mdct sinewin"
 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
 aac_latm_decoder_select="aac_decoder aac_latm_parser"
-ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
+ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
 aic_decoder_select="golomb idctdsp"
@@ -1752,15 +1783,15 @@ atrac1_decoder_select="mdct sinewin"
 atrac3_decoder_select="mdct"
 atrac3p_decoder_select="mdct sinewin"
 bink_decoder_select="blockdsp hpeldsp"
-binkaudio_dct_decoder_select="mdct rdft dct sinewin"
-binkaudio_rdft_decoder_select="mdct rdft sinewin"
+binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
+binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
 cllc_decoder_select="bswapdsp"
 comfortnoise_encoder_select="lpc"
 cook_decoder_select="audiodsp mdct sinewin"
 cscd_decoder_select="lzo"
 cscd_decoder_suggest="zlib"
-dca_decoder_select="mdct"
+dca_decoder_select="fmtconvert mdct"
 dnxhd_decoder_select="blockdsp idctdsp"
 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
 dvvideo_decoder_select="dvprofile idctdsp"
@@ -1794,8 +1825,10 @@ h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpel
 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
 h263i_decoder_select="h263_decoder"
 h263p_encoder_select="h263_encoder"
-h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
+h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
 h264_decoder_suggest="error_resilience"
+h264_qsv_decoder_deps="libmfx"
+h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsv h264_qsv_hwaccel"
 hevc_decoder_select="bswapdsp cabac golomb videodsp"
 huffyuv_decoder_select="bswapdsp huffyuvdsp"
 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
@@ -1849,6 +1882,7 @@ nellymoser_encoder_select="audio_frame_queue mdct sinewin"
 nuv_decoder_select="idctdsp lzo"
 on2avc_decoder_select="mdct"
 opus_decoder_deps="avresample"
+opus_decoder_select="imdct15"
 png_decoder_deps="zlib"
 png_encoder_deps="zlib"
 png_encoder_select="huffyuvencdsp"
@@ -1884,7 +1918,7 @@ twinvq_decoder_select="mdct lsp sinewin"
 utvideo_decoder_select="bswapdsp"
 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
 vble_decoder_select="huffyuvdsp"
-vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
+vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
 vc1image_decoder_select="vc1_decoder"
 vorbis_decoder_select="mdct"
 vorbis_encoder_select="mdct"
@@ -1897,11 +1931,11 @@ vp7_decoder_select="h264pred videodsp"
 vp8_decoder_select="h264pred videodsp"
 vp9_decoder_select="videodsp"
 webp_decoder_select="vp8_decoder"
-wmapro_decoder_select="mdct sinewin"
-wmav1_decoder_select="mdct sinewin"
-wmav1_encoder_select="mdct sinewin"
-wmav2_decoder_select="mdct sinewin"
-wmav2_encoder_select="mdct sinewin"
+wmapro_decoder_select="mdct sinewin wma_freqs"
+wmav1_decoder_select="mdct sinewin wma_freqs"
+wmav1_encoder_select="mdct sinewin wma_freqs"
+wmav2_decoder_select="mdct sinewin wma_freqs"
+wmav2_encoder_select="mdct sinewin wma_freqs"
 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
 wmv1_decoder_select="h263_decoder"
 wmv1_encoder_select="h263_encoder"
@@ -1928,6 +1962,7 @@ h263_vdpau_hwaccel_deps="vdpau"
 h263_vdpau_hwaccel_select="h263_decoder"
 h264_dxva2_hwaccel_deps="dxva2"
 h264_dxva2_hwaccel_select="h264_decoder"
+h264_qsv_hwaccel_deps="libmfx"
 h264_vaapi_hwaccel_deps="vaapi"
 h264_vaapi_hwaccel_select="h264_decoder"
 h264_vda_hwaccel_deps="vda"
@@ -1936,6 +1971,8 @@ h264_vda_old_hwaccel_deps="vda"
 h264_vda_old_hwaccel_select="h264_decoder"
 h264_vdpau_hwaccel_deps="vdpau"
 h264_vdpau_hwaccel_select="h264_decoder"
+hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
+hevc_dxva2_hwaccel_select="hevc_decoder"
 mpeg1_vdpau_hwaccel_deps="vdpau"
 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
 mpeg2_dxva2_hwaccel_deps="dxva2"
@@ -1962,7 +1999,7 @@ wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
 h264_parser_select="h264_decoder"
 mpegvideo_parser_select="mpegvideo"
 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
-vc1_parser_select="mpegvideo"
+vc1_parser_select="mpegvideo startcode vc1_decoder"
 
 # external libraries
 libfaac_encoder_deps="libfaac"
@@ -1982,6 +2019,7 @@ libopencore_amrnb_decoder_deps="libopencore_amrnb"
 libopencore_amrnb_encoder_deps="libopencore_amrnb"
 libopencore_amrnb_encoder_select="audio_frame_queue"
 libopencore_amrwb_decoder_deps="libopencore_amrwb"
+libopenh264_encoder_deps="libopenh264"
 libopenjpeg_decoder_deps="libopenjpeg"
 libopenjpeg_encoder_deps="libopenjpeg"
 libopus_decoder_deps="libopus"
@@ -2020,6 +2058,7 @@ avi_muxer_select="riffenc"
 avisynth_demuxer_deps="avisynth"
 avisynth_demuxer_select="riffdec"
 caf_demuxer_select="riffdec"
+dash_muxer_select="mp4_muxer"
 dirac_demuxer_select="dirac_parser"
 dv_demuxer_select="dvprofile"
 dv_muxer_select="dvprofile"
@@ -2046,7 +2085,9 @@ mpegtsraw_demuxer_select="mpegts_demuxer"
 mxf_d10_muxer_select="mxf_muxer"
 nut_muxer_select="riffenc"
 nuv_demuxer_select="riffdec"
+oga_muxer_select="ogg_muxer"
 ogg_demuxer_select="golomb"
+opus_muxer_select="ogg_muxer"
 psp_muxer_select="mov_muxer"
 rtp_demuxer_select="sdp_demuxer"
 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
@@ -2057,6 +2098,7 @@ sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
 sdp_demuxer_select="rtpdec"
 smoothstreaming_muxer_select="ismv_muxer"
 spdif_muxer_select="aac_parser"
+spx_muxer_select="ogg_muxer"
 tak_demuxer_select="tak_parser"
 tg2_muxer_select="mov_muxer"
 tgp_muxer_select="mov_muxer"
@@ -2086,7 +2128,8 @@ sndio_outdev_deps="sndio_h"
 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
 vfwcap_indev_extralibs="-lavicap32"
-x11grab_indev_deps="x11grab XShmCreateImage"
+x11grab_indev_deps="x11grab"
+x11grab_xcb_indev_deps="libxcb"
 
 # protocols
 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
@@ -2098,6 +2141,7 @@ gopher_protocol_select="network"
 http_protocol_select="tcp_protocol"
 httpproxy_protocol_select="tcp_protocol"
 https_protocol_select="tls_protocol"
+icecast_protocol_select="http_protocol"
 librtmp_protocol_deps="librtmp"
 librtmpe_protocol_deps="librtmp"
 librtmps_protocol_deps="librtmp"
@@ -2146,6 +2190,7 @@ avcodec_example_deps="avcodec avutil"
 filter_audio_example_deps="avfilter avutil"
 metadata_example_deps="avformat avutil"
 output_example_deps="avcodec avformat avutil swscale"
+qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
 transcode_aac_example_deps="avcodec avformat avresample"
 
 # libraries, in linking order
@@ -2197,8 +2242,6 @@ ranlib="ranlib"
 strip="strip"
 yasmexe="yasm"
 
-nogas=":"
-
 # machine
 arch_default=$(uname -m)
 cpu="generic"
@@ -2214,13 +2257,14 @@ enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
 enable asm
 enable debug
 enable doc
+enable faan faandct faanidct
 enable optimizations
 enable safe_bitstream_reader
 enable static
 enable swscale_alpha
 
 # By default, enable only those hwaccels that have no external dependencies.
-enable dxva2 vdpau
+enable dxva2 vda vdpau
 
 # build settings
 SHFLAGS='-shared -Wl,-soname,$$(@F)'
@@ -2455,15 +2499,6 @@ if enabled cross_compile; then
         die "Must specify target arch and OS when cross-compiling"
 fi
 
-ar_default="${cross_prefix}${ar_default}"
-cc_default="${cross_prefix}${cc_default}"
-nm_default="${cross_prefix}${nm_default}"
-pkg_config_default="${cross_prefix}${pkg_config_default}"
-ranlib="${cross_prefix}${ranlib}"
-strip="${cross_prefix}${strip}"
-
-sysinclude_default="${sysroot}/usr/include"
-
 case "$toolchain" in
     clang-asan)
         cc_default="clang"
@@ -2539,14 +2574,24 @@ case "$toolchain" in
         add_ldflags -fprofile-arcs -ftest-coverage
     ;;
     hardened)
-        add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
-        add_ldflags -Wl,-z,relro -Wl,-z,now
+        add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
+        add_cflags   -fno-strict-overflow -fstack-protector-all
+        add_ldflags  -Wl,-z,relro -Wl,-z,now
     ;;
     ?*)
         die "Unknown toolchain $toolchain"
     ;;
 esac
 
+ar_default="${cross_prefix}${ar_default}"
+cc_default="${cross_prefix}${cc_default}"
+nm_default="${cross_prefix}${nm_default}"
+pkg_config_default="${cross_prefix}${pkg_config_default}"
+ranlib="${cross_prefix}${ranlib}"
+strip="${cross_prefix}${strip}"
+
+sysinclude_default="${sysroot}/usr/include"
+
 set_default arch cc pkg_config sysinclude target_exec target_os
 enabled cross_compile || host_cc_default=$cc
 set_default host_cc
@@ -2614,6 +2659,17 @@ EOF
     die "Sanity test failed."
 fi
 
+armasm_flags(){
+    for flag; do
+        case $flag in
+            # Filter out MSVC cl.exe options from cflags that shouldn't
+            # be passed to gas-preprocessor
+            -M[TD]*)                                            ;;
+            *)                  echo $flag                      ;;
+        esac
+   done
+}
+
 ccc_flags(){
     for flag; do
         case $flag in
@@ -2665,6 +2721,7 @@ msvc_common_flags(){
             -lavifil32)           echo vfw32.lib ;;
             -lavicap32)           echo vfw32.lib user32.lib ;;
             -l*)                  echo ${flag#-l}.lib ;;
+            -L*)                  echo -libpath:${flag#-L} ;;
             *)                    echo $flag ;;
         esac
     done
@@ -2677,7 +2734,7 @@ msvc_flags(){
             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
-                                       -wd4273 ;;
+                                       -wd4273 -wd4701 ;;
         esac
     done
 }
@@ -2821,7 +2878,7 @@ probe_cc(){
     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
         test -d "$sysroot" || die "No valid sysroot specified."
         _type=armcc
-        _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
+        _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
         armcc_conf="$PWD/armcc.conf"
         $_cc --arm_linux_configure                 \
              --arm_linux_config_file="$armcc_conf" \
@@ -2881,6 +2938,12 @@ probe_cc(){
         _cflags_size="-O2 -Munroll=c:1 $opt_common"
         _cflags_noopt="-O1"
         _flags_filter=pgi_flags
+    elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
+        _type=armasm
+        _ident=$($_cc | head -n1)
+        # 4509: "This form of conditional instruction is deprecated"
+        _flags="-nologo -ignore 4509"
+        _flags_filter=armasm_flags
     elif $_cc 2>&1 | grep -q Microsoft; then
         _type=msvc
         _ident=$($cc 2>&1 | head -n1)
@@ -3264,6 +3327,7 @@ elif enabled x86; then
     case $cpu in
         i[345]86|pentium)
             cpuflags="-march=$cpu"
+            disable i686
             disable mmx
         ;;
         # targets that do NOT support nopl and conditional mov (cmov)
@@ -3371,6 +3435,7 @@ case $target_os in
         ;;
     android)
         disable symver
+        enable section_data_rel_ro
         SLIB_INSTALL_NAME='$(SLIBNAME)'
         SLIB_INSTALL_LINKS=
         # soname not set on purpose
@@ -3417,7 +3482,6 @@ case $target_os in
         add_extralibs -lpoll -lgnugetopt
         ;;
     darwin)
-        gas="gas-preprocessor.pl $cc"
         enabled ppc && add_asflags -force_cpusubtype_ALL
         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
@@ -3506,6 +3570,7 @@ case $target_os in
         ;;
     linux)
         enable dv1394
+        enable section_data_rel_ro
         ;;
     irix*)
         target_os=irix
@@ -3625,6 +3690,9 @@ probe_libc(){
     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
         eval ${pfx}libc_type=solaris
         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
+    else
+        eval ${pfx}libc_type=default
+        add_${pfx}cppflags -D_DEFAULT_SOURCE
     fi
 }
 
@@ -3758,22 +3826,45 @@ unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
 EOF
 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
 
-
-if enabled asm; then
-    enabled     arm         && nogas=die
-    enabled_all ppc altivec && nogas=warn
-    as=${gas:=$as}
-    check_as <<EOF && enable gnu_as || \
-        $nogas "GNU assembler not found, install gas-preprocessor"
-.macro m n
-\n: .int 0
+check_gas() {
+    log "check_gas using '$as' as AS"
+    # :vararg is used on aarch64, arm and ppc altivec
+    check_as <<EOF || return 1
+.macro m n, y:vararg=0
+\n: .int \y
 .endm
 m x
 EOF
-
-    check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
+    # .altmacro is only used in arm asm
+    ! enabled arm || check_as <<EOF || return 1
 .altmacro
 EOF
+    enable gnu_as
+    return 0
+}
+
+if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
+    nogas=:
+    enabled_any arm aarch64 && nogas=die
+    enabled_all ppc altivec && nogas=warn
+    as_noop=-v
+
+    case $as_type in
+        arm*) gaspp_as_type=armasm; as_noop=-h ;;
+        gcc)  gaspp_as_type=gas ;;
+        *)    gaspp_as_type=$as_type ;;
+    esac
+
+    [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
+
+    check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
+        gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
+
+    if ! check_gas ; then
+        as=${gas:=$as}
+        check_gas || \
+            $nogas "GNU assembler not found, install/update gas-preprocessor"
+    fi
 
     check_as <<EOF && enable as_func
 .func test
@@ -3831,6 +3922,11 @@ ra .dn d0.i16
 .unreq ra
 EOF
 
+    # llvm's integrated assembler supports .object_arch from llvm 3.5
+    [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
+.object_arch armv4
+EOF
+
     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
 
 elif enabled mips; then
@@ -3935,7 +4031,7 @@ EOF
 
 fi
 
-check_code cc arm_neon.h "int64x2_t test" && enable intrinsics_neon
+check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
 
 check_ldflags -Wl,--as-needed
 
@@ -3994,12 +4090,16 @@ check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
 check_func  ${malloc_prefix}memalign            && enable memalign
 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
 
+check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
+    check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
+
 check_func  fcntl
 check_func  fork
 check_func  gethrtime
 check_func  getopt
 check_func  getrusage
 check_func  gettimeofday
+check_func  gmtime_r
 check_func  isatty
 check_func  localtime_r
 check_func  mach_absolute_time
@@ -4007,7 +4107,7 @@ check_func  mkstemp
 check_func  mmap
 check_func  mprotect
 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
-check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
+check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
 check_func  sched_getaffinity
 check_func  setrlimit
 check_func  strerror_r
@@ -4027,6 +4127,7 @@ check_func_headers windows.h MapViewOfFile
 check_func_headers windows.h SetConsoleTextAttribute
 check_func_headers windows.h Sleep
 check_func_headers windows.h VirtualAlloc
+check_struct windows.h "CONDITION_VARIABLE" Ptr
 
 check_header direct.h
 check_header dlfcn.h
@@ -4055,6 +4156,8 @@ check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
 
 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
 
+check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
+
 if ! disabled w32threads && ! enabled pthreads; then
     check_func_headers "windows.h process.h" _beginthreadex &&
         enable w32threads || disable w32threads
@@ -4108,17 +4211,19 @@ enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
                                done || die "ERROR: libgsm not found"; }
 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
+enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
+enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
-enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
+enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
@@ -4153,7 +4258,7 @@ fi
 
 # libdc1394 check
 if enabled libdc1394; then
-    { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
+    { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
         enable libdc1394_2; } ||
     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
         enable libdc1394_1; } ||
@@ -4203,15 +4308,40 @@ enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
 
 if enabled libcdio; then
     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
-    check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
+    check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
+    die "ERROR: No usable libcdio/cdparanoia found"
 fi
 
 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
 
-enabled x11grab                                           &&
-require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
-require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
-{ enabled xlib || die "ERROR: Xlib not found"; }
+if enabled libxcb || enabled x11grab && ! disabled libxcb; then
+    check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
+        enabled libxcb && die "ERROR: libxcb not found";
+    } && disable x11grab && enable libxcb
+
+    disabled libxcb_shm ||
+        check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
+            enabled libxcb_shm && die "ERROR: libxcb_shm not found";
+        } && check_header sys/shm.h && enable libxcb_shm
+
+    disabled libxcb_xfixes ||
+        check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
+            enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
+        } && enable libxcb_xfixes
+
+    add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
+    add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
+fi
+
+if enabled x11grab; then
+    enabled xlib || die "ERROR: Xlib not found"
+    require Xext X11/extensions/XShm.h XShmCreateImage -lXext
+    require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
+fi
+
+enabled vaapi && enabled xlib &&
+    check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
+    enable vaapi_x11
 
 enabled vdpau &&
     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
@@ -4251,6 +4381,7 @@ check_disable_warning -Wno-pointer-sign
 # add some linker flags
 check_ldflags -Wl,--warn-common
 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
+enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
 
 # add some strip flags
@@ -4354,6 +4485,8 @@ elif enabled gcc; then
     check_cflags -Werror=return-type
     check_cflags -Werror=declaration-after-statement
     check_cflags -Werror=vla
+    check_cflags -Werror=format-security
+    check_cflags -fdiagnostics-color=auto
     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
 elif enabled llvm_gcc; then
     check_cflags -mllvm -stack-alignment=16
@@ -4430,7 +4563,7 @@ enabled_all dxva2 CoTaskMemFree &&
     enable dxva2_lib
 
 ! enabled_any memalign posix_memalign aligned_malloc &&
-    enabled $simd_align_16 && enable memalign_hack
+    enabled simd_align_16 && enable memalign_hack
 
 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
 
@@ -4442,6 +4575,8 @@ for thread in $THREADS_LIST; do
     fi
 done
 
+enabled zlib && add_cppflags -DZLIB_CONST
+
 # conditional library dependencies, in linking order
 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
 enabled resample_filter && prepend avfilter_deps "avresample"
@@ -4774,7 +4909,7 @@ Cflags: -I\${includedir}
 EOF
 }
 
-pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
+pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"