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• Building FFMPEG library for iOS5.1 ARMv7

  25 octobre 2012, par Jimmy

  I'm trying to use the FFMPEG library in an XCode 4.5.1 project. And I'm trying to build it for ARMv7

  But I'm running into some major issues, I'm hoping that someone can walk me through how to do it ? I feel a little sketched out reading material thats a couple months old. I'm not aware of the changes.

  New Update (after a lot of time)

  I want to help everyone out that is having this problem because its so frustrating. heres how you do it. I've pasted the configuration stage. This is my ./configure

  ./configure --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffserver --enable-cross-compile --arch=arm --target-os=darwin
  
     --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2
  
     --as='gas-preprocessor/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2'
  
     --sysroot=/applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk
  
     --cpu=cortex-a8
  
     --extra-ldflags='-isysroot /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk'
  
     --enable-pic
  
     --disable-bzlib --disable-gpl --disable-shared --enable-static --disable-mmx --disable-debug --disable-neon
  
     --extra-cflags='-pipe -Os -gdwarf-2 -isysroot /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk -m${thumb_opt:-no-thumb} -mthumb-interwork'

  This ended up working for me. I had the following problems.

  • I had to download ( https://github.com/yuvi/gas-preprocessor ) copy the file gas-preprocessor.pl at /usr/local/bin. Set permissions to read write (777)
  • Make sure I'm using the right GCC compiler : /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/llvm-gcc-4.2/bin/arm-apple-darwin10-llvm-gcc-4.2
  • Make sure I'm using the right SDK : /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk
  • —extra-cflags="-arch armv7" causes bugs in the configure. take it out. This was causing my gcc compile errors. (specifically this one : error : unrecognized command line option “-arch”.)

  I'll let you guys know how much further I get.

• Can not make with ffmpeg and ios5.1

  19 octobre 2012, par why

  I am using https://github.com/lajos/iFrameExtractor and I configure in ffmpeg directory

  ./configure --disable-doc --disable-ffmpeg --disable-ffplay --disable-ffserver
  
   --enable-cross-compile --arch=arm --target-os=darwin   
  
   --cc=/applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc
  
   --as='gas-preprocessor/gas-preprocessor.pl'  
  
   --sysroot=/applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk
  
   --enable-pic

  It works ok, but I got errors when make

  /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc
  -DHAVE_AV_CONFIG_H -I. -I"/Users/liuqiang/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize -MMD -MF libavformat/avio.d -MT libavformat/avio.o -c -o libavformat/avio.o libavformat/avio.c /applications/xcode.app/contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc
  -DHAVE_AV_CONFIG_H -I. -I"/Users/liuqiang/work/iFrameExtractor/ffmpeg" -D_ISOC99_SOURCE -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DPIC -std=c99 -fomit-frame-pointer -fPIC -g -Wdeclaration-after-statement -Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -Wno-pointer-sign -Wcast-qual -Wwrite-strings -Wundef -O3 -fno-math-errno -fno-tree-vectorize -MMD -MF libavformat/aviobuf.d -MT libavformat/aviobuf.o -c -o
  libavformat/aviobuf.o libavformat/aviobuf.c libavformat/aviobuf.c : In
  function ‘url_fdopen’ : libavformat/aviobuf.c:560 : warning : passing
  argument 6 of ‘init_put_byte’ from incompatible pointer type
  libavformat/aviobuf.c:560 : warning : passing argument 7 of
  ‘init_put_byte’ from incompatible pointer type
  libavformat/aviobuf.c:560 : warning : passing argument 8 of
  ‘init_put_byte’ from incompatible pointer type
  /var/folders/59/7srh1dk537s3hr4b2_4k1nxr0000gn/T//ccXNO5a2.s:2662:no
  such instruction :

  eor %ecx, %eax,%eax,ror'
 /var/folders/59/7srh1dk537s3hr4b2_4k1nxr0000gn/T//ccXNO5a2.s:2663:no
 such instruction:

  bic %ecx, %ecx,'
  /var/folders/59/7srh1dk537s3hr4b2_4k1nxr0000gn/T//ccXNO5a2.s:2664:suffix
  or operands invalid for

  mov'
 /var/folders/59/7srh1dk537s3hr4b2_4k1nxr0000gn/T//ccXNO5a2.s:2665:no
 such instruction:

  eor %eax, %eax,%ecx,lsr' make : *
  [libavformat/aviobuf.o] Error 1

• Revision e636af13e7 : configure : default configure log to config.log this is consistent with autoconf

  18 juillet 2013, par James Zern

  Changed Paths :
   Modify /.gitignore

  
   Modify /README

  
   Modify /build/make/configure.sh

  
  
  configure : default configure log to config.log

  this is consistent with autoconf

  Change-Id : I1860831693789259ee35d644775653d6a460cc77