How do I link third party libraries like fftw3 and sndfile to an iPhone project in Xcode?

Question

I\'m trying to link third party libraries like fftw3 and sndfile to my iPhone project in Xcode3.2. I got it working in a regular Mac project by setting the \"Header Search P

Answer 1

Build FFTW3 for iOS:

Here is a script to create .h and .a files for different iOS architectures (device, simulator, ...)

Enjoy it!

#!/bin/sh

# build for iOS / Mac
# changed by 10mitri
# original:
# http://stackoverflow.com/questions/3588904/how-to-link-third-party-libraries-like-fftw3-and-sndfile-to-an-iphone-project-in


# this is the folder where the libs will be generated
export OUTPUT_DIR=ios-libs

# Select toolchains folder
export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain


#$(CURRENT_ARCH)

build_target()
{
PLATFORM=$1
ARCH=$2
SDK_VERSION=$3
CONFIGURE_HOST=$4
IOS_DEPLOYMENT_TARGET=$5

export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/$PLATFORM.platform/Developer/SDKs/$PLATFORM$SDK_VERSION.sdk

export CPPFLAGS="-I$SDKROOT/usr/include/"
export CFLAGS="$CPPFLAGS -arch $ARCH -isysroot $SDKROOT"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -arch $ARCH -fembed-bitcode"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -arch $ARCH -fembed-bitcode"

echo ---------------------------------------------------
echo ---------------------------------------------------
echo ---------------------------------------------------
echo -------------- BUILD TARGET
echo -------------- PLATFORM : $PLATFORM
echo -------------- ARCH : $ARCH
echo -------------- SDK_VERSION : $SDK_VERSION
echo -------------- HOST : $CONFIGURE_HOST
echo -------------- MIN iOS : $IOS_DEPLOYMENT_TARGET
echo -------------- SDK PATH : $SDKROOT
echo ---------------------------------------------------
echo ---------------------------------------------------
echo ---------------------------------------------------

sleep 3

make clean

./configure --host=$CONFIGURE_HOST

make -j4

mkdir $OUTPUT_DIR/$ARCH

# Copy the lib
cp .libs/libfftw3.a $OUTPUT_DIR/$ARCH/libfftw3.a

unset CPPFLAGS CFLAGS LD CXX CC
}


mkdir $OUTPUT_DIR

rm -rf $OUTPUT_DIR/*

# Copy the header file too, just for convenience
cp api/fftw3.h $OUTPUT_DIR/fftw3.h

build_target "iPhoneOS" "armv7" "10.2" "arm-apple-darwin" "9.0"
build_target "iPhoneOS" "armv7s" "10.2" "arm-apple-darwin" "9.0"
build_target "iPhoneOS" "arm64" "10.2" "arm-apple-darwin" "9.0"
build_target "iPhoneSimulator" "x86_64" "10.2" "x86_64-apple-darwin" "9.0"
build_target "iPhoneSimulator" "i386" "10.2" "i386-apple-darwin" "9.0"

#build_target "MacOSX" "x86_64" "10.12" "i386-apple-darwin" "10.10"