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• PKG_CONFIG_PATH can't be seen by configure

  23 mars 2019, par Hashim

  I’m using Cygwin to compile a MinGW version of FFmpeg (I already use Cygwin so it didn’t make sense to use anything else to build).

  I was originally getting an error that someone on the Doom9 forums suggested might be due to mixing MinGW-64 and Cygwin dependencies. I then compiled or sourced MinGW-64 versions of all of the required dependencies (as some dependencies could not be compiled with Cygwin alone), and FFmpeg still fails to configure, always with the same error.

  This error is always a variation of "package not found using pkg-config" - if libaom is enabled, I get :

  ERROR : aom >= 1.0.0 not found using pkg-config

  If I don’t add —enable-libaom in the configure script, I get :

  ERROR : libass not found using pkg-config

  I’m running the following on the command line, in a single shell, to compile FFmpeg :

  cd /ffmpeg_sources/ffmpeg && export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig" && 
  
  ./configure --arch=x86_64 --cross-prefix=x86_64-w64-mingw32- --target-os=mingw32 \
  
  --prefix="/usr/local" \
  
  --extra-cflags="-I/usr/local/include -static" \
  
  --extra-ldflags="-L/usr/local/lib -static" \
  
  --pkg-config-flags="--static" \
  
  --extra-libs="-pthread -lm" \
  
  --enable-libaom \
  
  --enable-libass \
  
  --enable-libfdk-aac \
  
  --enable-libfreetype \
  
  --enable-libmp3lame \
  
  --enable-libopus \
  
  --enable-libvorbis \
  
  --enable-libvpx \
  
  --enable-libx264 \
  
  --enable-libx265 \
  
  --enable-gpl \
  
  --enable-nonfree \
  
  --enable-static  \
  
  --disable-shared && 
  
  make -j$(nproc) && 
  
  make install

  A similar question [here] indicates that it’s an issue with PKG_CONFIG_PATH not seeing the packages in /usr/local/lib/pkgconfig, but when I do :

  cd /ffmpeg_sources/ffmpeg && PKG_CONFIG_PATH="/usr/local/lib/pkgconfig" && pkg-config --exists --print-errors aom && echo $?

  ...it returns a 0, indicating aom.pc was found in the PKG_CONFIG_PATH - which either rules out an issue with PKG_CONFIG_PATH or makes it a very specific one in which only configure and make aren’t able to see PKG_CONFIG_PATH, despite being run from the same shell just a moment after.

  How can I resolve this ?

  ---

  EDIT

  I did some further investigation by looking into ffbuild/config.log, and noticed that it shows a warning :

  WARNING : x86_64-w64-mingw32-pkg-config not found, library detection
  may fail.

  However, doing apt-cyg search x86_64-w64-mingw32-pkg-config shows that particular package as being installed.

  Sure enough, in the /bin folder, there is an extensionless file called x86_64-w64-mingw32-pkg-config, with the following contents :

  #!/bin/sh
  
  exec pkgconf --personality=x86_64-w64-mingw32 $@

  I’ve also found the following related issues, in case they can help anyone else figure out what’s going on here :

  https://ffmpeg.org/pipermail/ffmpeg-devel/2012-June/126683.html

  Warning "i686-mingw32-pkg-config not found, library detection may fail" while cross compiling ffmpeg

  https://github.com/Microsoft/FFmpegInterop/issues/106

  https://gitlab.gnome.org/GNOME/librsvg/issues/239

  https://ffmpeg.zeranoe.com/forum/viewtopic.php?t=2041

• ffmpeg configure ERROR : libx264 not found

  1er décembre 2021, par Dion

  I want to configure ffmpeg on Ubuntu 64 bit, but I get an error : "ERROR : libx264 not found".
ffmpeg doesn’t see libx264 ! Before that, I successfully configure it in QNX and Windows.
I prevented a known bug with --disable-opencl , but it did not help.
In my project the libx264 should be static.

  



  libx264 configure :

  



  ../configure --prefix=x264 --disable-cli --enable-static --disable-opencl

platform:      X86_64
byte order:    little-endian
system:        LINUX
cli:           no
libx264:       internal
shared:        no
static:        yes
asm:           yes
interlaced:    yes
avs:           no
lavf:          no
ffms:          no
mp4:           no
gpl:           yes
thread:        posix
opencl:        no
filters:       crop select_every
lto:           no
debug:         no
gprof:         no
strip:         no
PIC:           no
bit depth:     all
chroma format: all


  



  it's OK ! Confused only platform : X86_64

  



  FFmpeg configure :

  



  ../configure --target-os=linux --prefix=ffmpeg --disable-programs \
--disable-ffplay --disable-ffprobe --disable-doc \ 
--disable-htmlpages --disable-manpages --disable-podpages \ 
--disable-txtpages --disable-avdevice --disable-postproc \
--disable-network --disable-encoders --enable-encoder=libx264 \
--disable-decoders --enable-decoder=h264 --disable-hwaccels \
--disable-muxers --enable-muxer=matroska --disable-demuxers \
--disable-parsers --enable-parser=h264 --enable-gpl \
--enable-libx264 \
--extra-ldflags=-L../x264/lib \
--extra-cflags=-I../x264/include

    ERROR: libx264 not found


  



  Paths exactly correct !

  



  if delete --enable-libx264 :

  



  install prefix            ffmpeg
source path               /home/osuser/develop/libs/source/ffmpeg-3.4.2
C compiler                gcc
C library                 glibc
ARCH                      x86 (generic)
big-endian                no
runtime cpu detection     yes
standalone assembly       yes
x86 assembler             nasm
...


  



  This is what worries me... Why x86 ?

  



  ARCH x86 (generic)

  



  x86 assembler nasm

  



  Maybe this is the problem ? How to configure ffmpeg in x86_64 ?
--arch=x86_64 not help !

  



  UPDATE :
The problem is fixed, when configure libx264, need to add --enable-pic

  


• ffmpeg configure ERROR : libx264 not found

  12 avril 2019, par Dion

  I want to configure ffmpeg on Ubuntu 64 bit, but I get an error : "ERROR : libx264 not found".
  ffmpeg doesn’t see libx264 ! Before that, I successfully configure it in QNX and Windows.
  I prevented a known bug with --disable-opencl , but it did not help.
  In my project the libx264 should be static.

  libx264 configure :

  ../configure --prefix=x264 --disable-cli --enable-static --disable-opencl
  
  
  
  platform:      X86_64
  
  byte order:    little-endian
  
  system:        LINUX
  
  cli:           no
  
  libx264:       internal
  
  shared:        no
  
  static:        yes
  
  asm:           yes
  
  interlaced:    yes
  
  avs:           no
  
  lavf:          no
  
  ffms:          no
  
  mp4:           no
  
  gpl:           yes
  
  thread:        posix
  
  opencl:        no
  
  filters:       crop select_every
  
  lto:           no
  
  debug:         no
  
  gprof:         no
  
  strip:         no
  
  PIC:           no
  
  bit depth:     all
  
  chroma format: all

  it’s OK ! Confused only platform : X86_64

  FFmpeg configure :

  ../configure --target-os=linux --prefix=ffmpeg --disable-programs \
  
  --disable-ffplay --disable-ffprobe --disable-doc \ 
  
  --disable-htmlpages --disable-manpages --disable-podpages \ 
  
  --disable-txtpages --disable-avdevice --disable-postproc \
  
  --disable-network --disable-encoders --enable-encoder=libx264 \
  
  --disable-decoders --enable-decoder=h264 --disable-hwaccels \
  
  --disable-muxers --enable-muxer=matroska --disable-demuxers \
  
  --disable-parsers --enable-parser=h264 --enable-gpl \
  
  --enable-libx264 \
  
  --extra-ldflags=-L../x264/lib \
  
  --extra-cflags=-I../x264/include
  
  
  
      ERROR: libx264 not found

  Paths exactly correct !

  if delete --enable-libx264 :

  install prefix            ffmpeg
  
  source path               /home/osuser/develop/libs/source/ffmpeg-3.4.2
  
  C compiler                gcc
  
  C library                 glibc
  
  ARCH                      x86 (generic)
  
  big-endian                no
  
  runtime cpu detection     yes
  
  standalone assembly       yes
  
  x86 assembler             nasm
  
  ...

  This is what worries me... Why x86 ?

  ARCH x86 (generic)

  x86 assembler nasm

  Maybe this is the problem ? How to configure ffmpeg in x86_64 ?
  --arch=x86_64 not help !

  UPDATE :
  The problem is fixed, when configure libx264, need to add --enable-pic