Compile FFmpeg with librtmp ERROR: librtmp not found - ios

Question

Environment: Mac OS X 10.9.2, Xcode 5.1.
I have compiled librtmp, libogg and libspeex successfully, they are in the directories named fat-librtmp, fat-libogg and fat-libspeex , then I run the shell script as below to coompile them into FFmpeg:
#!/bin/sh
# OS X Mavericks, Xcode 5.1
set -ex
VERSION="2.2.2"
CURRPATH=`pwd`
DSTDIR="ffmpeg-built"
SCRATCH="scratch"
LIBRTMP=$CURRPATH/librtmp
ARCHS="i386 x86_64 armv7 armv7s arm64"
CONFIGURE_FLAGS="--enable-shared \
--disable-doc \
--disable-stripping \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffserver \
--disable-ffprobe \
--disable-decoders \
--disable-encoders \
--disable-protocols \
--enable-protocol=file \
--enable-protocol=rtmp \
--enable-librtmp \
--enable-encoder=flv \
--enable-decoder=flv \
--disable-symver \
--disable-asm \
--enable-cross-compile"
rm -rf $DSTDIR
mkdir $DSTDIR
if [ ! `which yasm` ]; then
if [ ! `which brew` ]; then
ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
fi
brew install yasm
fi
if [ ! `which gas-preprocessor.pl` ]; then
curl -3L https://github.com/libav/gas-preprocessor/raw/master/gas-preprocessor.pl -o /usr/local/bin/gas-preprocessor.pl
chmod +x /usr/local/bin/gas-preprocessor.pl
fi
if [ ! -e ffmpeg-$VERSION.tar.bz2 ]; then
curl -O http://www.ffmpeg.org/releases/ffmpeg-$VERSION.tar.bz2
fi
tar jxf ffmpeg-$VERSION.tar.bz2
export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH"
export LD_LIBRARY_PATH="/usr/local/lib:$LD_LIBRARY_PATH"
for ARCH in $ARCHS; do
mkdir -p $DSTDIR/$SCRATCH/$ARCH
cd $DSTDIR/$SCRATCH/$ARCH
CFLAGS="-arch $ARCH"
if [ $ARCH == "i386" -o $ARCH == "x86_64" ]; then
PLATFORM="iPhoneSimulator"
CFLAGS="$CFLAGS -mios-simulator-version-min=6.0"
else
PLATFORM="iPhoneOS"
CFLAGS="$CFLAGS -mios-version-min=6.0"
if [ $ARCH == "arm64" ]; then
EXPORT="GASPP_FIX_XCODE5=1"
fi
fi
XCRUN_SDK=`echo $PLATFORM | tr '[:upper:]' '[:lower:]'`
CC="xcrun -sdk $XCRUN_SDK clang"
CFLAGS="$CFLAGS -I$LIBRTMP/include"
CXXFLAGS="$CFLAGS"
LDFLAGS="$CFLAGS -L$LIBRTMP/lib"
$CURRPATH/ffmpeg-$VERSION/configure \
--target-os=darwin \
--arch=$ARCH \
--cc="$CC" \
$CONFIGURE_FLAGS \
--extra-cflags="$CFLAGS" \
--extra-cxxflags="$CXXFLAGS" \
--extra-ldflags="$LDFLAGS" \
--prefix=$CURRPATH/$DSTDIR/$ARCH
make -j3 install $EXPORT
cd $CURRPATH
done
rm -rf $DSTDIR/$SCRATCH
mkdir -p $DSTDIR/lib
cd $DSTDIR/$ARCH/lib
LIBS=`ls *.a`
cd $CURRPATH
for LIB in $LIBS; do
lipo -create `find $DSTDIR -name $LIB` -output $DSTDIR/lib/$LIB
done
cp -rf $DSTDIR/$ARCH/include $DSTDIR
for ARCH in $ARCHS; do
rm -rf $DSTDIR/$ARCH
done
Unluckily, the config.log shows:
check_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
pkg-config --exists --print-errors librtmp
Package librtmp was not found in the pkg-config search path.
Perhaps you should add the directory containing `librtmp.pc'
to the PKG_CONFIG_PATH environment variable
No package 'librtmp' found
ERROR: librtmp not found
I have googled and knew that configure contains a line enabled librtmp && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket, which maybe be wrong. Right? Can somebody help me to solve it?
UPDATE at 2014/06/10
I think it's about pkgconfig or something, so I have create a file named librtmp.pc at /usr/local/lib/pkgconfig, which contains below text:
prefix=/usr/local/librtmp
exec_prefix=${prefix}
libdir=${prefix}/lib
includedir=${prefix}/include
Name: librtmp
Description: RTMP implementation
Version: v2.3
Requires:
URL: http://rtmpdump.mplayerhq.hu
Libs: -L${libdir} -lrtmp -lz
Cflags: -I${includedir}
Also I have moved built librtmp to /usr/local. After above being done, I run the shell script again, but still same error! Can somebody told me why and how to solve it?

Answer 1

The below links give some insight while building ffmpeg.
https://trac.ffmpeg.org/wiki/CompilationGuide/Generic
Check whether LD_LIBRARY_PATH environment variable is set properly.