FFMPEG won't configure for iPhone

I have downloaded FFMPEG via svn, and put the gas-preprocessor into usr/local/bin. But, when I try to post the following code into terminal, it says: -bash: ./configure: No such file or directory

This is the code:

./configure --cc=/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc --as='gas-preprocessor.pl /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' --sysroot=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.sdk --enable-cross-compile --target-os=darwin --arch=arm --cpu=arm1176jzf-s --disable-pic --enable-gpl --enable-postproc --disable-debug --disable-stripping --enable-avfilter --enable-avfilter-lavf --extra-cflags='-arch armv6' --extra-ldflags='-arch armv6'

I am using Snow Leopard 10.6.1开发者_高级运维. What am I doing wrong?

Sometimes the shell script you're trying to run has the wrong path for the hashbang at the top of the file (which is then reported correctly but ambiguously as a missing file). Open up the configure script and check the path it's trying to run.

For example, take a look at the top of this configure script:

[on mymachine in directory sqsh-2.1.5]$ head -3 configure
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.59.

If for some reason /bin/sh does not exist, you'll get a file not found error.

The error is that it's not finding "configure" in the shell's current directory. What's your current working directory when you run this?