[FFmpeg-user] error

[吕军委]

rake
Executing cd FFmpeg; ./configure --disable-ffmpeg --disable-ffplay --disable-ffserver --disable-ffprobe --disable-doc --disable-bzlib --target-os=darwin --enable-cross-compile --enable-version3 --arch=arm --cpu=cortex-a8 --enable-pic --extra-cflags='-arch armv7 -miphoneos-version-min=6.0' --extra-ldflags='-arch armv7 -miphoneos-version-min=6.0' --extra-cflags='-mfpu=neon -mfloat-abi=softfp' --enable-neon --enable-optimizations --disable-debug --disable-armv5te --disable-armv6 --disable-armv6t2 --enable-small --cc=/Applications/XCode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang  --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
/Applications/XCode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang is unable to create an executable file.
C compiler test failed.

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 at ffmpeg.org<mailto:ffmpeg-user at ffmpeg.org> mailing list or IRC #ffmpeg on irc.freenode.net<http://irc.freenode.net>.
Include the log file "config.log" produced by configure as this will help
solving the problem.
rake aborted!
******** Build failed ********
/Users/lvjunwei/kxmovie/Rakefile:8:in `system_or_exit'
/Users/lvjunwei/kxmovie/Rakefile:159:in `buildArch'
/Users/lvjunwei/kxmovie/Rakefile:207:in `block in <top (required)>'
Tasks: TOP => default => build_ffmpeg => build_ffmpeg_armv7
(See full trace by running task with --trace)