********************************************************************************
conan install ffmpeg/4.2.1@ --build=ffmpeg --profile=/home/conan/w/BuildSingleReference/28206/9ebeb638-1da1-4844-821f-2c2a6df0a02f/profile.txt
********************************************************************************
Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=9
os=Linux
os_build=Linux
[options]
ffmpeg:shared=False
[build_requires]
[env]

ffmpeg/4.2.1: Forced build from source
Installing package: ffmpeg/4.2.1
Requirements
    brotli/1.0.9 from 'conan-center' - Cache
    bzip2/1.0.8 from 'conan-center' - Cache
    ffmpeg/4.2.1 from local cache - Cache
    flac/1.3.3 from 'conan-center' - Cache
    freetype/2.10.4 from 'conan-center' - Cache
    libalsa/1.2.5.1 from 'conan-center' - Cache
    libcap/2.48 from 'conan-center' - Cache
    libfdk_aac/2.0.2 from 'conan-center' - Cache
    libiconv/1.16 from 'conan-center' - Cache
    libmp3lame/3.100 from 'conan-center' - Cache
    libpng/1.6.37 from 'conan-center' - Cache
    libsndfile/1.0.31 from 'conan-center' - Cache
    libvpx/1.9.0 from 'conan-center' - Cache
    libwebp/1.2.0 from 'conan-center' - Cache
    libx264/20191217 from 'conan-center' - Cache
    libx265/3.4 from 'conan-center' - Cache
    ogg/1.3.4 from 'conan-center' - Cache
    openh264/2.1.1 from 'conan-center' - Cache
    openjpeg/2.4.0 from 'conan-center' - Cache
    openssl/1.1.1k from 'conan-center' - Cache
    opus/1.3.1 from 'conan-center' - Cache
    pulseaudio/14.2 from 'conan-center' - Cache
    vaapi/system from 'conan-center' - Cache
    vdpau/system from 'conan-center' - Cache
    vorbis/1.3.7 from 'conan-center' - Cache
    xorg/system from 'conan-center' - Cache
    xz_utils/5.2.5 from 'conan-center' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    brotli/1.0.9:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    bzip2/1.0.8:da606cf731e334010b0bf6e85a2a6f891b9f36b0 - Cache
    ffmpeg/4.2.1:4fe581f8b0c1357953960505253878faf5fbbe42 - Build
    flac/1.3.3:b9bd28193f63cd74fd2213b63c74017e7893c24d - Cache
    freetype/2.10.4:f1014dc4f9380132c471ceb778980949abf136d3 - Cache
    libalsa/1.2.5.1:d48130e0dd76369b1338deb3b2372c5a649f9f2d - Cache
    libcap/2.48:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    libfdk_aac/2.0.2:b911f48570f9bb2902d9e83b2b9ebf9d376c8c56 - Cache
    libiconv/1.16:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    libmp3lame/3.100:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    libpng/1.6.37:7929d8ecf29c60d74fd3c1f6cb78bbb3cb49c0c7 - Cache
    libsndfile/1.0.31:9384eaf0a0891af0df136cb9739770bd5d841e22 - Cache
    libvpx/1.9.0:21d176c6d550e07ab7b17c1513a8ddb7fb960145 - Cache
    libwebp/1.2.0:034afc24309e6fc60dbccb1dab5b0f9cad6ec656 - Cache
    libx264/20191217:52bfaf5780e9ee7fba3fa4a492156dbcf0dff057 - Cache
    libx265/3.4:75e903d40ade00f9adc18d07c1d36ecb3e595a39 - Cache
    ogg/1.3.4:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    openh264/2.1.1:b911f48570f9bb2902d9e83b2b9ebf9d376c8c56 - Cache
    openjpeg/2.4.0:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    openssl/1.1.1k:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    opus/1.3.1:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    pulseaudio/14.2:5611ee5065f13cebfa2079c64dc495a1cc23ea5d - Cache
    vaapi/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
    vdpau/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
    vorbis/1.3.7:033a9a186751ed382a6fa5fa2c844ad34b7c3302 - Cache
    xorg/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
    xz_utils/5.2.5:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    zlib/1.2.11:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
Build requirements
    pkgconf/1.7.4 from 'conan-center' - Cache
    yasm/1.3.0 from 'conan-center' - Cache
Build requirements packages
    pkgconf/1.7.4:6af9cc7cb931c5ad942174fd7838eb655717c709 - Cache
    yasm/1.3.0:24647d9fe8ec489125dfbae4b3ebefaf7581674c - Cache

Installing (downloading, building) binaries...
brotli/1.0.9: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
bzip2/1.0.8: Already installed!
bzip2/1.0.8: Appending PATH environment variable: /home/conan/w/BuildSingleReference/.conan/data/bzip2/1.0.8/_/_/package/da606cf731e334010b0bf6e85a2a6f891b9f36b0/bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libalsa/1.2.5.1: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libcap/2.48: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libfdk_aac/2.0.2: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libiconv/1.16: Already installed!
libiconv/1.16: Appending PATH environment var: /home/conan/w/BuildSingleReference/.conan/data/libiconv/1.16/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libmp3lame/3.100: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libvpx/1.9.0: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libwebp/1.2.0: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libx264/20191217: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libx265/3.4: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
ogg/1.3.4: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
openh264/2.1.1: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
openjpeg/2.4.0: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
openssl/1.1.1k: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
opus/1.3.1: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
pkgconf/1.7.4: Already installed!
pkgconf/1.7.4: Appending PATH env var: /home/conan/w/BuildSingleReference/.conan/data/pkgconf/1.7.4/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/bin
pkgconf/1.7.4: Setting PKG_CONFIG env var: /home/conan/w/BuildSingleReference/.conan/data/pkgconf/1.7.4/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/bin/pkgconf
pkgconf/1.7.4: Appending AUTOMAKE_CONAN_INCLUDES env var: /home/conan/w/BuildSingleReference/.conan/data/pkgconf/1.7.4/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/bin/aclocal
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
vaapi/system: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
vdpau/system: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
xorg/system: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
xz_utils/5.2.5: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
yasm/1.3.0: Already installed!
yasm/1.3.0: Appending PATH environment variable: /home/conan/w/BuildSingleReference/.conan/data/yasm/1.3.0/_/_/package/24647d9fe8ec489125dfbae4b3ebefaf7581674c/bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
zlib/1.2.11: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
flac/1.3.3: Already installed!
flac/1.3.3: Appending PATH environment variable: /home/conan/w/BuildSingleReference/.conan/data/flac/1.3.3/_/_/package/b9bd28193f63cd74fd2213b63c74017e7893c24d/bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libpng/1.6.37: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
vorbis/1.3.7: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
freetype/2.10.4: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libsndfile/1.0.31: Already installed!
libsndfile/1.0.31: Appending PATH environment variable: /home/conan/w/BuildSingleReference/.conan/data/libsndfile/1.0.31/_/_/package/9384eaf0a0891af0df136cb9739770bd5d841e22/bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
pulseaudio/14.2: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
ffmpeg/4.2.1: Applying build-requirement: yasm/1.3.0
ffmpeg/4.2.1: Applying build-requirement: pkgconf/1.7.4
ffmpeg/4.2.1: Copying sources to build folder
ffmpeg/4.2.1: Building your package in /home/conan/w/BuildSingleReference/.conan/data/ffmpeg/4.2.1/_/_/build/4fe581f8b0c1357953960505253878faf5fbbe42
ffmpeg/4.2.1: Generator pkg_config created yasm.pc
ffmpeg/4.2.1: Generator pkg_config created libpkgconf.pc
ffmpeg/4.2.1: Generator pkg_config created liblzma.pc
ffmpeg/4.2.1: Generator pkg_config created libiconv.pc
ffmpeg/4.2.1: Generator pkg_config created freetype2.pc
ffmpeg/4.2.1: Generator pkg_config created libopenjp2.pc
ffmpeg/4.2.1: Generator pkg_config created openh264.pc
ffmpeg/4.2.1: Generator pkg_config created x264.pc
ffmpeg/4.2.1: Generator pkg_config created x265.pc
ffmpeg/4.2.1: Generator pkg_config created libvpx.pc
ffmpeg/4.2.1: Generator pkg_config created libmp3lame.pc
ffmpeg/4.2.1: Generator pkg_config created fdk-aac.pc
ffmpeg/4.2.1: Generator pkg_config created libwebp.pc
ffmpeg/4.2.1: Generator pkg_config created libwebpmux.pc
ffmpeg/4.2.1: Generator pkg_config created libwebpdemux.pc
ffmpeg/4.2.1: Generator pkg_config created libwebpdecoder.pc
ffmpeg/4.2.1: Generator pkg_config created libpulse.pc
ffmpeg/4.2.1: Generator pkg_config created vaapi.pc
ffmpeg/4.2.1: Generator pkg_config created vdpau.pc
ffmpeg/4.2.1: Generator pkg_config created bzip2.pc
ffmpeg/4.2.1: Generator pkg_config created libpng.pc
ffmpeg/4.2.1: Generator pkg_config created libbrotlicommon.pc
ffmpeg/4.2.1: Generator pkg_config created libbrotlienc.pc
ffmpeg/4.2.1: Generator pkg_config created libbrotlidec.pc
ffmpeg/4.2.1: Generator pkg_config created brotli.pc
ffmpeg/4.2.1: Generator pkg_config created libcrypto.pc
ffmpeg/4.2.1: Generator pkg_config created libssl.pc
ffmpeg/4.2.1: Generator pkg_config created openssl.pc
ffmpeg/4.2.1: Generator pkg_config created alsa.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-dri3.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-util.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-event.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-aux.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-atom.pc
ffmpeg/4.2.1: Generator pkg_config created xkeyboard-config.pc
ffmpeg/4.2.1: Generator pkg_config created xcb.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-xinerama.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-xfixes.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-sync.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-shm.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-shape.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-renderutil.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-render.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-randr.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-keysyms.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-image.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-icccm.pc
ffmpeg/4.2.1: Generator pkg_config created xcb-xkb.pc
ffmpeg/4.2.1: Generator pkg_config created xtrans.pc
ffmpeg/4.2.1: Generator pkg_config created xxf86vm.pc
ffmpeg/4.2.1: Generator pkg_config created xvmc.pc
ffmpeg/4.2.1: Generator pkg_config created xv.pc
ffmpeg/4.2.1: Generator pkg_config created xtst.pc
ffmpeg/4.2.1: Generator pkg_config created xt.pc
ffmpeg/4.2.1: Generator pkg_config created xscrnsaver.pc
ffmpeg/4.2.1: Generator pkg_config created xres.pc
ffmpeg/4.2.1: Generator pkg_config created xrender.pc
ffmpeg/4.2.1: Generator pkg_config created xrandr.pc
ffmpeg/4.2.1: Generator pkg_config created xpm.pc
ffmpeg/4.2.1: Generator pkg_config created xmuu.pc
ffmpeg/4.2.1: Generator pkg_config created xmu.pc
ffmpeg/4.2.1: Generator pkg_config created xkbfile.pc
ffmpeg/4.2.1: Generator pkg_config created xinerama.pc
ffmpeg/4.2.1: Generator pkg_config created xi.pc
ffmpeg/4.2.1: Generator pkg_config created xft.pc
ffmpeg/4.2.1: Generator pkg_config created xfixes.pc
ffmpeg/4.2.1: Generator pkg_config created xext.pc
ffmpeg/4.2.1: Generator pkg_config created xdmcp.pc
ffmpeg/4.2.1: Generator pkg_config created xdamage.pc
ffmpeg/4.2.1: Generator pkg_config created xcursor.pc
ffmpeg/4.2.1: Generator pkg_config created xcomposite.pc
ffmpeg/4.2.1: Generator pkg_config created xaw7.pc
ffmpeg/4.2.1: Generator pkg_config created xau.pc
ffmpeg/4.2.1: Generator pkg_config created sm.pc
ffmpeg/4.2.1: Generator pkg_config created ice.pc
ffmpeg/4.2.1: Generator pkg_config created fontenc.pc
ffmpeg/4.2.1: Generator pkg_config created x11-xcb.pc
ffmpeg/4.2.1: Generator pkg_config created x11.pc
ffmpeg/4.2.1: Generator pkg_config created xorg.pc
ffmpeg/4.2.1: Generator pkg_config created sndfile.pc
ffmpeg/4.2.1: Generator pkg_config created libcap.pc
ffmpeg/4.2.1: Generator pkg_config created zlib.pc
ffmpeg/4.2.1: Generator pkg_config created vorbis.pc
ffmpeg/4.2.1: Generator pkg_config created vorbisfile.pc
ffmpeg/4.2.1: Generator pkg_config created vorbisfile-alias.pc
ffmpeg/4.2.1: Generator pkg_config created vorbisenc.pc
ffmpeg/4.2.1: Generator pkg_config created vorbisenc-alias.pc
ffmpeg/4.2.1: Generator pkg_config created vorbis_full_package.pc
ffmpeg/4.2.1: Generator pkg_config created opus.pc
ffmpeg/4.2.1: Generator pkg_config created flac.pc
ffmpeg/4.2.1: Generator pkg_config created flac++.pc
ffmpeg/4.2.1: Generator pkg_config created ogglib.pc
ffmpeg/4.2.1: Generator pkg_config created ogg.pc
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK. 'fPIC' option found and apparently well managed
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
ffmpeg/4.2.1: Calling build()
ffmpeg/4.2.1: Calling:
 > source_subfolder/configure '--pkg-config-flags=--static' '--disable-doc' '--disable-programs' '--pkg-config=/home/conan/w/BuildSingleReference/.conan/data/pkgconf/1.7.4/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/bin/pkgconf' '--disable-cross-compile' '--disable-shared' '--enable-static' '--enable-pic' '--enable-postproc' '--enable-bzlib' '--enable-zlib' '--enable-lzma' '--enable-iconv' '--enable-libopenjpeg' '--enable-libopenh264' '--enable-libvorbis' '--enable-libopus' '--disable-libzmq' '--disable-sdl2' '--enable-libx264' '--enable-libx265' '--enable-libvpx' '--enable-libmp3lame' '--enable-libfdk-aac' '--enable-libwebp' '--enable-openssl' '--enable-alsa' '--enable-libpulse' '--enable-vaapi' '--enable-vdpau' '--enable-libxcb' '--enable-libxcb-shm' '--enable-libxcb-shape' '--enable-libxcb-xfixes' '--disable-appkit' '--disable-avfoundation' '--disable-coreimage' '--disable-audiotoolbox' '--disable-videotoolbox' '--disable-securetransport' '--disable-cuda' '--disable-cuvid' '--enable-nonfree' '--enable-gpl' '--arch=x86_64' '--cc=/usr/bin/gcc' '--cxx=' '--prefix=/home/conan/w/BuildSingleReference/.conan/data/ffmpeg/4.2.1/_/_/package/4fe581f8b0c1357953960505253878faf5fbbe42' '--bindir=${prefix}/bin' '--libdir=${prefix}/lib' 

----Running------
> source_subfolder/configure '--pkg-config-flags=--static' '--disable-doc' '--disable-programs' '--pkg-config=/home/conan/w/BuildSingleReference/.conan/data/pkgconf/1.7.4/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/bin/pkgconf' '--disable-cross-compile' '--disable-shared' '--enable-static' '--enable-pic' '--enable-postproc' '--enable-bzlib' '--enable-zlib' '--enable-lzma' '--enable-iconv' '--enable-libopenjpeg' '--enable-libopenh264' '--enable-libvorbis' '--enable-libopus' '--disable-libzmq' '--disable-sdl2' '--enable-libx264' '--enable-libx265' '--enable-libvpx' '--enable-libmp3lame' '--enable-libfdk-aac' '--enable-libwebp' '--enable-openssl' '--enable-alsa' '--enable-libpulse' '--enable-vaapi' '--enable-vdpau' '--enable-libxcb' '--enable-libxcb-shm' '--enable-libxcb-shape' '--enable-libxcb-xfixes' '--disable-appkit' '--disable-avfoundation' '--disable-coreimage' '--disable-audiotoolbox' '--disable-videotoolbox' '--disable-securetransport' '--disable-cuda' '--disable-cuvid' '--enable-nonfree' '--enable-gpl' '--arch=x86_64' '--cc=/usr/bin/gcc' '--cxx=' '--prefix=/home/conan/w/BuildSingleReference/.conan/data/ffmpeg/4.2.1/_/_/package/4fe581f8b0c1357953960505253878faf5fbbe42' '--bindir=${prefix}/bin' '--libdir=${prefix}/lib' 
-----------------
ERROR: vaapi requested but not found

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.
ffmpeg/4.2.1: 
WARN: pulseaudio/14.2: requirement libalsa/1.2.4 overridden by ffmpeg/4.2.1 to libalsa/1.2.5.1 
xorg/system: WARN: Lib folder doesn't exist, can't collect libraries: /home/conan/w/BuildSingleReference/.conan/data/xorg/system/_/_/package/5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9/lib
ffmpeg/4.2.1: WARN: Build folder is dirty, removing it: /home/conan/w/BuildSingleReference/.conan/data/ffmpeg/4.2.1/_/_/build/4fe581f8b0c1357953960505253878faf5fbbe42
ffmpeg/4.2.1: ERROR: Package '4fe581f8b0c1357953960505253878faf5fbbe42' build failed
ffmpeg/4.2.1: WARN: Build folder /home/conan/w/BuildSingleReference/.conan/data/ffmpeg/4.2.1/_/_/build/4fe581f8b0c1357953960505253878faf5fbbe42
ERROR: ffmpeg/4.2.1: Error in build() method, line 307
	autotools = self._configure_autotools()
while calling '_configure_autotools', line 297
	self._autotools.configure(args=args, configure_dir=self._source_subfolder)
	ConanException: Error 1 while executing source_subfolder/configure '--pkg-config-flags=--static' '--disable-doc' '--disable-programs' '--pkg-config=/home/conan/w/BuildSingleReference/.conan/data/pkgconf/1.7.4/_/_/package/6af9cc7cb931c5ad942174fd7838eb655717c709/bin/pkgconf' '--disable-cross-compile' '--disable-shared' '--enable-static' '--enable-pic' '--enable-postproc' '--enable-bzlib' '--enable-zlib' '--enable-lzma' '--enable-iconv' '--enable-libopenjpeg' '--enable-libopenh264' '--enable-libvorbis' '--enable-libopus' '--disable-libzmq' '--disable-sdl2' '--enable-libx264' '--enable-libx265' '--enable-libvpx' '--enable-libmp3lame' '--enable-libfdk-aac' '--enable-libwebp' '--enable-openssl' '--enable-alsa' '--enable-libpulse' '--enable-vaapi' '--enable-vdpau' '--enable-libxcb' '--enable-libxcb-shm' '--enable-libxcb-shape' '--enable-libxcb-xfixes' '--disable-appkit' '--disable-avfoundation' '--disable-coreimage' '--disable-audiotoolbox' '--disable-videotoolbox' '--disable-securetransport' '--disable-cuda' '--disable-cuvid' '--enable-nonfree' '--enable-gpl' '--arch=x86_64' '--cc=/usr/bin/gcc' '--cxx=' '--prefix=/home/conan/w/BuildSingleReference/.conan/data/ffmpeg/4.2.1/_/_/package/4fe581f8b0c1357953960505253878faf5fbbe42' '--bindir=${prefix}/bin' '--libdir=${prefix}/lib'