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如何将 fftw3 和 sndfile 等第三方库链接到 Xcode 中的 iPhone 项目？

发布于 2024-09-16 05:04:56 字数 258 浏览 4 评论 0原文

我正在尝试将 fftw3 和 sndfile 等第三方库链接到 Xcode3.2 中的 iPhone 项目。我通过在项目构建配置下将“标题搜索路径”设置为“/usr/local/include”并将“其他链接器标志”设置为“-lfftw3 -lsndfile”，使其在常规 Mac 项目中工作。然而，当我尝试使用相同的设置在 iPhone 项目中构建它时，它给了我“找不到 -lfftw3 的库”和退出代码 1 错误消息。

苹果不允许在 iPhone 上这样做吗？有办法解决这个问题吗？

原文

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 Path" to "/usr/local/include" and the "Other Linker Flags" to "-lfftw3 -lsndfile" under the project build configuration. However, it gave me "library not found for -lfftw3" with exit code 1 error message when I tried to build it in the iPhone project using the same settings.

Does apple not allow this on the iPhone? Is there a way to get around this?

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哆啦不做梦 2024-09-23 05:04:56

我已针对 IOS 5.0+ 修改了 Epskampie 的脚本
在带有 IOS SDK 6.0 和 MacOSX SDK 10.8 的 OS X 10.7 上与 fftw3.3.3 一起使用

#!/bin/sh

# build_ios5.sh
# build an arm / i386 / x86_64 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884
# changed by Nickun
# original:
# http://stackoverflow.com/questions/3588904/how-to-link-third-party-libraries-like-fftw3-and-sndfile-to-an-iphone-project-in


# make sure we start out clean
make distclean

# this is the folder where the results of our efforts will end up:
export RESULT_DIR=ios-library

# Select toolchains folder
export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
# Select the desired iPhone SDK
export DEVROOT_IOS=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT_IOS=$DEVROOT_IOS/SDKs/iPhoneOS6.0.sdk
# Select the OSX SDK
export DEVROOT_OSX=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer
export SDKROOT_OSX=$DEVROOT_OSX/SDKs/MacOSX10.8.sdk

# ------------------------ armv7---------------------------
# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --enable-float --enable-neon

make -j2

# Copy the ARM library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_armv7.a

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

# ------------------------ armv7s---------------------------
# Do it all again for i386
make distclean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7s -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7s -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7s -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --enable-float --enable-neon

make -j2

# Copy the ARM library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_armv7s.a


# ------------------------ i386 ---------------------------
# Do it all again for i386
make distclean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

export CPPFLAGS="-I$SDKROOT_OSX/usr/include/"
export CFLAGS="$CPPFLAGS -arch i386 -no-cpp-precomp -mmacosx-version-min=10.7 -isysroot $SDKROOT_OSX"
export LD="$XCODE_TOOLCHAINS/usr/bin/ld"
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch i386 -std=gnu++11 -stdlib=libc++"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch i386 -std=gnu99"
export CXXFLAGS="$CFLAGS"

# TODO: error checking
./configure --enable-float
make -j2

# Copy the FAT native library to the temporary location
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_i386.a

# ------------------------ x86_64 ---------------------------
# Do it all again for x86_64
make distclean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

export CPPFLAGS="-I$SDKROOT_OSX/usr/include/"
export CFLAGS="$CPPFLAGS -arch x86_64 -no-cpp-precomp -mmacosx-version-min=10.7 -isysroot $SDKROOT_OSX"
export LD="$XCODE_TOOLCHAINS/usr/bin/ld"
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch x86_64 -std=gnu++11 -stdlib=libc++"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch x86_64 -std=gnu99"
export CXXFLAGS="$CFLAGS"

# TODO: error checking
./configure --enable-float
make -j2

# Copy the FAT native library to the temporary location
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_x86_64.a



# Create fat lib by combining the two versions
lipo -arch armv7 $RESULT_DIR/libfftw3f_armv7.a -arch armv7s $RESULT_DIR/libfftw3f_armv7s.a -arch i386 $RESULT_DIR/libfftw3f_i386.a -arch x86_64 $RESULT_DIR/libfftw3f_x86_64.a -create -output $RESULT_DIR/libfftw3f.a

# Remove intermediate binaries
#rm $RESULT_DIR/libfftw3_armv7.a
#rm $RESULT_DIR/libfftw3_i386.a
#rm $RESULT_DIR/libfftw3_x86_64.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LD LDFLAGS CXX CXXFLAGS

I've modified Epskampie's script for IOS 5.0+
Used with fftw3.3.3 on OS X 10.7 with IOS SDK 6.0 and MacOSX SDK 10.8

#!/bin/sh

# build_ios5.sh
# build an arm / i386 / x86_64 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884
# changed by Nickun
# original:
# http://stackoverflow.com/questions/3588904/how-to-link-third-party-libraries-like-fftw3-and-sndfile-to-an-iphone-project-in


# make sure we start out clean
make distclean

# this is the folder where the results of our efforts will end up:
export RESULT_DIR=ios-library

# Select toolchains folder
export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
# Select the desired iPhone SDK
export DEVROOT_IOS=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT_IOS=$DEVROOT_IOS/SDKs/iPhoneOS6.0.sdk
# Select the OSX SDK
export DEVROOT_OSX=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer
export SDKROOT_OSX=$DEVROOT_OSX/SDKs/MacOSX10.8.sdk

# ------------------------ armv7---------------------------
# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --enable-float --enable-neon

make -j2

# Copy the ARM library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_armv7.a

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

# ------------------------ armv7s---------------------------
# Do it all again for i386
make distclean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7s -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7s -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7s -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --enable-float --enable-neon

make -j2

# Copy the ARM library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_armv7s.a


# ------------------------ i386 ---------------------------
# Do it all again for i386
make distclean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

export CPPFLAGS="-I$SDKROOT_OSX/usr/include/"
export CFLAGS="$CPPFLAGS -arch i386 -no-cpp-precomp -mmacosx-version-min=10.7 -isysroot $SDKROOT_OSX"
export LD="$XCODE_TOOLCHAINS/usr/bin/ld"
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch i386 -std=gnu++11 -stdlib=libc++"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch i386 -std=gnu99"
export CXXFLAGS="$CFLAGS"

# TODO: error checking
./configure --enable-float
make -j2

# Copy the FAT native library to the temporary location
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_i386.a

# ------------------------ x86_64 ---------------------------
# Do it all again for x86_64
make distclean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

export CPPFLAGS="-I$SDKROOT_OSX/usr/include/"
export CFLAGS="$CPPFLAGS -arch x86_64 -no-cpp-precomp -mmacosx-version-min=10.7 -isysroot $SDKROOT_OSX"
export LD="$XCODE_TOOLCHAINS/usr/bin/ld"
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch x86_64 -std=gnu++11 -stdlib=libc++"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch x86_64 -std=gnu99"
export CXXFLAGS="$CFLAGS"

# TODO: error checking
./configure --enable-float
make -j2

# Copy the FAT native library to the temporary location
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_x86_64.a



# Create fat lib by combining the two versions
lipo -arch armv7 $RESULT_DIR/libfftw3f_armv7.a -arch armv7s $RESULT_DIR/libfftw3f_armv7s.a -arch i386 $RESULT_DIR/libfftw3f_i386.a -arch x86_64 $RESULT_DIR/libfftw3f_x86_64.a -create -output $RESULT_DIR/libfftw3f.a

# Remove intermediate binaries
#rm $RESULT_DIR/libfftw3_armv7.a
#rm $RESULT_DIR/libfftw3_i386.a
#rm $RESULT_DIR/libfftw3_x86_64.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LD LDFLAGS CXX CXXFLAGS
回复 原文
倒数 2024-09-23 05:04:56

为了编译 fftw3 以在 iOS 项目中使用，我修改了此处发布的脚本：
http://robertcarlsen.net/2009/07/15 /cross-compiling-for-iphone-dev-884

在带有 iOs SDK 3.2 的 OS X 10.6 上与 fftw3.2.2 一起使用

#!/bin/sh

# build_iphone.sh
# build an arm / i386 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884


# make sure we start out clean
make distclean

# this is the folder where the results of our efforts will end up:
export RESULT_DIR=ios-library

# Select the desired iPhone SDK
export DEVROOT=/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT=$DEVROOT/SDKs/iPhoneOS3.2.sdk

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT/usr/lib/gcc/arm-apple-darwin9/4.0.1/include/ -I$SDKROOT/usr/include/ -miphoneos-version-min=2.2"
export CFLAGS="$CPPFLAGS -arch armv6 -pipe -no-cpp-precomp -isysroot $SDKROOT"
export CPP="$DEVROOT/usr/bin/cpp $CPPFLAGS"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
./configure CC=$DEVROOT/usr/bin/arm-apple-darwin10-gcc-4.0.1 LD=$DEVROOT/usr/bin/ld --host=arm-apple-darwin

make -j4

# Copy the ARM library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_arm.a

# Copy the header file too, just for convenience
cp api/fftw3.h ios-library/fftw3.h

# Do it all again for i386
make distclean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LDFLAGS CXXFLAGS DEVROOT SDKROOT

export DEVROOT=/Developer
export SDKROOT=$DEVROOT/SDKs/MacOSX10.6.sdk

export CPPFLAGS="-I$SDKROOT/usr/lib/gcc/i686-apple-darwin10/4.0.1/include/ -I$SDKROOT/usr/include/ -mmacosx-version-min=10.5"
export CFLAGS="$CPPFLAGS -pipe -no-cpp-precomp -isysroot $SDKROOT -arch i386"
export CPP="$DEVROOT/usr/bin/cpp $CPPFLAGS"
export CXXFLAGS="$CFLAGS"

# TODO: error checking
./configure
make -j4

# Copy the native library to the temporary location
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_386.a

# Create fat lib by combining the two versions
lipo -arch arm $RESULT_DIR/libfftw3_arm.a -arch i386 $RESULT_DIR/libfftw3_386.a -create -output $RESULT_DIR/libfftw3.a

# Remove intermediate binaries
rm $RESULT_DIR/libfftw3_arm.a
rm $RESULT_DIR/libfftw3_386.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LDFLAGS CPP CXXFLAGS DEVROOT SDKROOT

从包含 fftw3 的目录运行此脚本。您需要的文件最终应位于 ios-library 文件夹中。

For compiling fftw3 for use in an iOS project, i've adapted the script posted here:
http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884

Used with fftw3.2.2 on OS X 10.6 with iOs SDK 3.2

#!/bin/sh

# build_iphone.sh
# build an arm / i386 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884


# make sure we start out clean
make distclean

# this is the folder where the results of our efforts will end up:
export RESULT_DIR=ios-library

# Select the desired iPhone SDK
export DEVROOT=/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT=$DEVROOT/SDKs/iPhoneOS3.2.sdk

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT/usr/lib/gcc/arm-apple-darwin9/4.0.1/include/ -I$SDKROOT/usr/include/ -miphoneos-version-min=2.2"
export CFLAGS="$CPPFLAGS -arch armv6 -pipe -no-cpp-precomp -isysroot $SDKROOT"
export CPP="$DEVROOT/usr/bin/cpp $CPPFLAGS"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
./configure CC=$DEVROOT/usr/bin/arm-apple-darwin10-gcc-4.0.1 LD=$DEVROOT/usr/bin/ld --host=arm-apple-darwin

make -j4

# Copy the ARM library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_arm.a

# Copy the header file too, just for convenience
cp api/fftw3.h ios-library/fftw3.h

# Do it all again for i386
make distclean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LDFLAGS CXXFLAGS DEVROOT SDKROOT

export DEVROOT=/Developer
export SDKROOT=$DEVROOT/SDKs/MacOSX10.6.sdk

export CPPFLAGS="-I$SDKROOT/usr/lib/gcc/i686-apple-darwin10/4.0.1/include/ -I$SDKROOT/usr/include/ -mmacosx-version-min=10.5"
export CFLAGS="$CPPFLAGS -pipe -no-cpp-precomp -isysroot $SDKROOT -arch i386"
export CPP="$DEVROOT/usr/bin/cpp $CPPFLAGS"
export CXXFLAGS="$CFLAGS"

# TODO: error checking
./configure
make -j4

# Copy the native library to the temporary location
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_386.a

# Create fat lib by combining the two versions
lipo -arch arm $RESULT_DIR/libfftw3_arm.a -arch i386 $RESULT_DIR/libfftw3_386.a -create -output $RESULT_DIR/libfftw3.a

# Remove intermediate binaries
rm $RESULT_DIR/libfftw3_arm.a
rm $RESULT_DIR/libfftw3_386.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LDFLAGS CPP CXXFLAGS DEVROOT SDKROOT

Run this script from the directory containing fftw3. The files you need should end up in the ios-library folder.

回复 原文
み零 2024-09-23 05:04:56

您需要将库构建为通用静态库。这个过程因图书馆而异，但通常是这样的。

  1. 将库构建为不同平台（至少是armv6和i386）的静态库
  2. 使用lipo从上面构建的各个静态库创建通用库
  3. 将通用库拖放到您的xcode项目
  4. 中将头文件拖放到你的 xcode 项目

第 1 步通常是最棘手的，因为许多库都有不同的构建过程。通常通过设置正确的编译器标志来使用 iphone sdk 而不是系统范围的编译器来完成。

You need to build your libraries as universal static libraries. The process varies from library to library but it generally goes something like this.

  1. build the library as a static lib for the different platforms (armv6 and i386 at the least)
  2. use lipo to create a universal library from the individual static libraries built above
  3. drag and drop the universal lib into your xcode project
  4. drag and drop the header files into your xcode project

Step 1 is generally the trickiest since many libraries have different build procedures. It is usually done by setting the proper compiler flags to use the iphone sdk instead of the system wide compiler.

回复 原文
何其悲哀 2024-09-23 05:04:56

我针对 Mac OS X 10.9.2、iOS 7.1、fftw-3.3.4 修改了 Nickun 的脚本。它还向 fat 文件添加一个 arm64 切片。这是脚本 ->

#!/bin/sh

# build_lipo.sh
# build an arm64 / armv7s / armv7 / i386 / x86_64 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884
# changed by Adam
# original: by Nickun
# 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 results of our efforts will end up:
export RESULT_DIR=ios-library

# Select toolchains folder
export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
# Select the desired iPhone SDK
export DEVROOT_IOS=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT_IOS=$DEVROOT_IOS/SDKs/iPhoneOS7.1.sdk
# Select the OSX SDK
export DEVROOT_OSX=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer
export SDKROOT_OSX=$DEVROOT_OSX/SDKs/MacOSX10.9.2.sdk

# ------------------------ i386 ---------------------------
# Do it for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

export CFLAGS="-arch i386"

# TODO: error checking
./configure --enable-float --host=i386-apple-darwin9.2.0 --target=i386-apple-darwin9.2.0
make -j2

# Copy the FAT native library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_i386.a

# ------------------------ x86_64 ---------------------------
# Do it all again for x86_64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# TODO: error checking
./configure --enable-float
make -j2

# Copy the FAT native library to the temporary location
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_x86_64.a

# ------------------------ armv7---------------------------
# Do it all again for armv7
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin --enable-float --enable-neon

make -j2

cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_armv7.a

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

# ------------------------ armv7s---------------------------
# Do it all again for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7s -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7s -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7s -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin --enable-float --enable-neon

make -j2

# Copy the ARM library to a temporary location
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_armv7s.a

# ------------------------ arm64 ---------------------------
# Do it all again for arm64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch arm64 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch arm64 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch arm64 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin --enable-float --enable-neon

make -j2

# Copy the ARM library to a temporary location
cp .libs/libfftw3f.a ios-library/libfftw3f_arm64.a


# Create fat lib by combining the two versions
lipo -arch armv7 $RESULT_DIR/libfftw3f_armv7.a -arch armv7s $RESULT_DIR/libfftw3f_armv7s.a -arch i386 $RESULT_DIR/libfftw3f_i386.a -arch x86_64 $RESULT_DIR/libfftw3f_x86_64.a -arch arm64 $RESULT_DIR/libfftw3f_arm64.a -create -output $RESULT_DIR/libfftw3f.a

# Remove intermediate binaries
#rm $RESULT_DIR/libfftw3_armv7.a
#rm $RESULT_DIR/libfftw3_i386.a
#rm $RESULT_DIR/libfftw3_x86_64.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LD LDFLAGS CXX CXXFLAGS

I modified Nickun's script for Mac OS X 10.9.2, iOS 7.1, fftw-3.3.4. It also adds an arm64 slice to the fat file. Here is the script ->

#!/bin/sh

# build_lipo.sh
# build an arm64 / armv7s / armv7 / i386 / x86_64 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884
# changed by Adam
# original: by Nickun
# 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 results of our efforts will end up:
export RESULT_DIR=ios-library

# Select toolchains folder
export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
# Select the desired iPhone SDK
export DEVROOT_IOS=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT_IOS=$DEVROOT_IOS/SDKs/iPhoneOS7.1.sdk
# Select the OSX SDK
export DEVROOT_OSX=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer
export SDKROOT_OSX=$DEVROOT_OSX/SDKs/MacOSX10.9.2.sdk

# ------------------------ i386 ---------------------------
# Do it for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

export CFLAGS="-arch i386"

# TODO: error checking
./configure --enable-float --host=i386-apple-darwin9.2.0 --target=i386-apple-darwin9.2.0
make -j2

# Copy the FAT native library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_i386.a

# ------------------------ x86_64 ---------------------------
# Do it all again for x86_64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# TODO: error checking
./configure --enable-float
make -j2

# Copy the FAT native library to the temporary location
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_x86_64.a

# ------------------------ armv7---------------------------
# Do it all again for armv7
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin --enable-float --enable-neon

make -j2

cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_armv7.a

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

# ------------------------ armv7s---------------------------
# Do it all again for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7s -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7s -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7s -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin --enable-float --enable-neon

make -j2

# Copy the ARM library to a temporary location
cp .libs/libfftw3f.a $RESULT_DIR/libfftw3f_armv7s.a

# ------------------------ arm64 ---------------------------
# Do it all again for arm64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch arm64 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch arm64 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch arm64 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin --enable-float --enable-neon

make -j2

# Copy the ARM library to a temporary location
cp .libs/libfftw3f.a ios-library/libfftw3f_arm64.a


# Create fat lib by combining the two versions
lipo -arch armv7 $RESULT_DIR/libfftw3f_armv7.a -arch armv7s $RESULT_DIR/libfftw3f_armv7s.a -arch i386 $RESULT_DIR/libfftw3f_i386.a -arch x86_64 $RESULT_DIR/libfftw3f_x86_64.a -arch arm64 $RESULT_DIR/libfftw3f_arm64.a -create -output $RESULT_DIR/libfftw3f.a

# Remove intermediate binaries
#rm $RESULT_DIR/libfftw3_armv7.a
#rm $RESULT_DIR/libfftw3_i386.a
#rm $RESULT_DIR/libfftw3_x86_64.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LD LDFLAGS CXX CXXFLAGS
回复 原文
心如狂蝶 2024-09-23 05:04:56

基于 10mitri 的回答，适用于 fftw-3.3.8、iOS SDK 12.2、XCode 10.2。

#!/bin/sh

export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain

export OUTPUT_DIR=ios-libs

mkdir -p $OUTPUT_DIR
rm -rf $OUTPUT_DIR/*

build_target()
{
    PLATFORM=$1
    ARCH=$2
    CONFIGURE_HOST=$3

    IOS_SDKROOT=`xcrun --sdk $PLATFORM --show-sdk-path`

    export CPPFLAGS="-I$IOS_SDKROOT/usr/include/"
    export CFLAGS="$CPPFLAGS -O3 -arch $ARCH -miphoneos-version-min=8.0 -isysroot $IOS_SDKROOT"
    export LD=$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 ---- BUILD TARGET
    echo ---- PLATFORM : $PLATFORM
    echo ---- ARCH : $ARCH
    echo ---- HOST : $CONFIGURE_HOST
    echo -----------------------------------------

    sleep 3

    make clean

    ./configure --host=$CONFIGURE_HOST

    make -j4

    # Copy the lib
    cp .libs/libfftw3.a $OUTPUT_DIR/libfftw3_$ARCH.a

    unset CPPFLAGS CFLAGS LD CXX CC
}

build_target "iphoneos" "armv7" "arm-apple-darwin"
build_target "iphoneos" "armv7s" "arm-apple-darwin"
build_target "iphoneos" "arm64" "arm-apple-darwin"
# build_target "iphonesimulator" "x86_64" "x86_64-apple-darwin"
build_target "iphonesimulator" "i386" "i386-apple-darwin"

# Make fat lib
lipo -arch armv7 $OUTPUT_DIR/libfftw3_armv7.a\
     -arch armv7s $OUTPUT_DIR/libfftw3_armv7s.a\
     -arch arm64 $OUTPUT_DIR/libfftw3_arm64.a\
     -arch i386 $OUTPUT_DIR/libfftw3_i386.a\
     -create -output $OUTPUT_DIR/libfftw3_ios.a

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

echo "done"

Based on the answer by 10mitri, working for fftw-3.3.8, iOS SDK 12.2, XCode 10.2.

#!/bin/sh

export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain

export OUTPUT_DIR=ios-libs

mkdir -p $OUTPUT_DIR
rm -rf $OUTPUT_DIR/*

build_target()
{
    PLATFORM=$1
    ARCH=$2
    CONFIGURE_HOST=$3

    IOS_SDKROOT=`xcrun --sdk $PLATFORM --show-sdk-path`

    export CPPFLAGS="-I$IOS_SDKROOT/usr/include/"
    export CFLAGS="$CPPFLAGS -O3 -arch $ARCH -miphoneos-version-min=8.0 -isysroot $IOS_SDKROOT"
    export LD=$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 ---- BUILD TARGET
    echo ---- PLATFORM : $PLATFORM
    echo ---- ARCH : $ARCH
    echo ---- HOST : $CONFIGURE_HOST
    echo -----------------------------------------

    sleep 3

    make clean

    ./configure --host=$CONFIGURE_HOST

    make -j4

    # Copy the lib
    cp .libs/libfftw3.a $OUTPUT_DIR/libfftw3_$ARCH.a

    unset CPPFLAGS CFLAGS LD CXX CC
}

build_target "iphoneos" "armv7" "arm-apple-darwin"
build_target "iphoneos" "armv7s" "arm-apple-darwin"
build_target "iphoneos" "arm64" "arm-apple-darwin"
# build_target "iphonesimulator" "x86_64" "x86_64-apple-darwin"
build_target "iphonesimulator" "i386" "i386-apple-darwin"

# Make fat lib
lipo -arch armv7 $OUTPUT_DIR/libfftw3_armv7.a\
     -arch armv7s $OUTPUT_DIR/libfftw3_armv7s.a\
     -arch arm64 $OUTPUT_DIR/libfftw3_arm64.a\
     -arch i386 $OUTPUT_DIR/libfftw3_i386.a\
     -create -output $OUTPUT_DIR/libfftw3_ios.a

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

echo "done"
回复 原文
稚气少女 2024-09-23 05:04:56

并不是 Apple 不允许该库，而是您链接到的版本是 x86，因此它无法在 iPhone 上运行。您需要使用 iPhone SDK 构建库，然后链接到该版本。

或者，您可以顽皮一点，将第 3 方源代码包含在您的主项目中。顽皮，但它会证明苹果不会阻止你，并显示该库是否可以在手机上运行。

不过，将代码保存在单独构建的库项目中会更干净。

It's not that Apple isn't allowing the library, it's that the version you are linking to is x86, and so it won't run on the iPhone. You need to build the library using the iPhone SDK, then link to that version.

Alternatively, you can be a little naughty and include the 3rd-party source in your main project. Naughty, but it'll prove the point that Apple isn't stopping you, and show whether the library will run on the phone OK.

It's cleaner to keep the code in a separately-built library project though.

回复 原文
暗喜 2024-09-23 05:04:56

为 iOS 构建 FFTW3：

这是一个为不同 iOS 架构（设备、模拟器等）创建 .h 和 .a 文件的脚本，

尽情享受吧！

#!/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"

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"
回复 原文
海的爱人是光 2024-09-23 05:04:56

我尝试了亚当·弗里曼的脚本，它很棒，但我必须执行以下操作才能使其正常工作，
所以我在这里分享我的发现。我的目标是制作基于arm的fftw lib，这样我就可以使用arm架构通过Xcode构建它++ lib

我也遇到了loretoparisi发布的问题，

/libbench2/libbench2.a:5:255: warning: null character ignored [-Wnull-character] 
./libbench2/libbench2.a:4:8: error: source file is not valid UTF-8

解决方法是去掉“tests”、“tools”文件夹和任何fftw的make规则- Makefile.in 和 Makefile.am 中的“wisdom”相关内容，我不知道这两个文件夹中的文件有多重要，但我必须删除它们，以便 fftw 构建能够成功而不会出现 UTF-8 错误

我也必须修改脚本（我唤醒了霓虹灯和浮动精度标志，同样我也不知道这些标志有多重要）

#!/bin/sh

# build_lipo.sh
# build an arm64 / armv7s / armv7 / i386 / x86_64 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884
# changed by Adam
# original: by Nickun
# 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 results of our efforts will end up:
export RESULT_DIR=ios-library

# Select toolchains folder
export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
# Select the desired iPhone SDK
export DEVROOT_IOS=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT_IOS=$DEVROOT_IOS/SDKs/iPhoneOS7.1.sdk
# Select the OSX SDK
export DEVROOT_OSX=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer
export SDKROOT_OSX=$DEVROOT_OSX/SDKs/MacOSX10.9.2.sdk

# ------------------------ i386 ---------------------------
# Do it for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP CC LD CXX LDFLAGS CXXFLAGS

export CFLAGS="-arch i386"

# TODO: error checking
./configure --host=i386-apple-darwin9.2.0 --target=i386-apple-darwin9.2.0
make -j2

# Copy the FAT native library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_i386.a
rm -fr .libs/libfftw3.a

# ------------------------ x86_64 ---------------------------
# Do it all again for x86_64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP CC LD CXX LDFLAGS CXXFLAGS

# TODO: error checking
./configure
make -j2

# Copy the FAT native library to the temporary location
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_x86_64.a
rm -fr .libs/libfftw3.a

# ------------------------ armv7---------------------------
# Do it all again for armv7
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX CC LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ "
export CFLAGS="$CPPFLAGS -arch armv7  -no-cpp-precomp -miphoneos-version-min=6.1 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7 -std=gnu++11 -stdlib=libc++ "
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7 -std=gnu99 "
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

cp .libs/libfftw3.a $RESULT_DIR/libfftw3_armv7.a
rm -fr .libs/libfftw3.a

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

# ------------------------ armv7s---------------------------
# Do it all again for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX CC LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ "
export CFLAGS="$CPPFLAGS -arch armv7s  -no-cpp-precomp -miphoneos-version-min=6.1 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7s -std=gnu++11 -stdlib=libc++ "
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7s -std=gnu99 "
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

# Copy the ARM library to a temporary location
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_armv7s.a
rm -fr .libs/libfftw3.a

# ------------------------ arm64 ---------------------------
# Do it all again for arm64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX CC LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ "
export CFLAGS="$CPPFLAGS -arch arm64  -no-cpp-precomp -miphoneos-version-min=6.1 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch arm64 -std=gnu++11 -stdlib=libc++ "
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch arm64 -std=gnu99 "
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

# Copy the ARM library to a temporary location
cp .libs/libfftw3.a ios-library/libfftw3_arm64.a
rm -fr .libs/libfftw3.a

# Create fat lib by combining the two versions
lipo -arch armv7 $RESULT_DIR/libfftw3_armv7.a -arch armv7s $RESULT_DIR/libfftw3_armv7s.a -arch i386 $RESULT_DIR/libfftw3_i386.a -arch x86_64 $RESULT_DIR/libfftw3_x86_64.a -arch arm64 $RESULT_DIR/libfftw3_arm64.a -create -output $RESULT_DIR/libfftw3.a

# Remove intermediate binaries
#rm $RESULT_DIR/libfftw3_armv7.a
#rm $RESULT_DIR/libfftw3_i386.a
#rm $RESULT_DIR/libfftw3_x86_64.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LD LDFLAGS CC CXX CXXFLAGS

I tried Adam Freeman's script, its awesome but I had to do the following to make it work,
so I am here to share my finding. My goal is to make arm based fftw lib so I can build it++ lib through Xcode with arm architecture

I also run into the problem posted by loretoparisi

/libbench2/libbench2.a:5:255: warning: null character ignored [-Wnull-character] 
./libbench2/libbench2.a:4:8: error: source file is not valid UTF-8

the workaround is to strip away the make rule for "tests","tools" folders and any fftw-"wisdom" related stuff in Makefile.in and Makefile.am, I don't know how important are the files from those two folders, but I had to remove them so fftw build can success without UTF-8 error

I also have to modify the script (I took awake the neon and float precision flag, again I also do not know how important are those flag)

#!/bin/sh

# build_lipo.sh
# build an arm64 / armv7s / armv7 / i386 / x86_64 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884
# changed by Adam
# original: by Nickun
# 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 results of our efforts will end up:
export RESULT_DIR=ios-library

# Select toolchains folder
export XCODE_TOOLCHAINS=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain
# Select the desired iPhone SDK
export DEVROOT_IOS=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT_IOS=$DEVROOT_IOS/SDKs/iPhoneOS7.1.sdk
# Select the OSX SDK
export DEVROOT_OSX=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer
export SDKROOT_OSX=$DEVROOT_OSX/SDKs/MacOSX10.9.2.sdk

# ------------------------ i386 ---------------------------
# Do it for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP CC LD CXX LDFLAGS CXXFLAGS

export CFLAGS="-arch i386"

# TODO: error checking
./configure --host=i386-apple-darwin9.2.0 --target=i386-apple-darwin9.2.0
make -j2

# Copy the FAT native library to a temporary location
mkdir $RESULT_DIR
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_i386.a
rm -fr .libs/libfftw3.a

# ------------------------ x86_64 ---------------------------
# Do it all again for x86_64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP CC LD CXX LDFLAGS CXXFLAGS

# TODO: error checking
./configure
make -j2

# Copy the FAT native library to the temporary location
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_x86_64.a
rm -fr .libs/libfftw3.a

# ------------------------ armv7---------------------------
# Do it all again for armv7
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX CC LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ "
export CFLAGS="$CPPFLAGS -arch armv7  -no-cpp-precomp -miphoneos-version-min=6.1 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7 -std=gnu++11 -stdlib=libc++ "
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7 -std=gnu99 "
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

cp .libs/libfftw3.a $RESULT_DIR/libfftw3_armv7.a
rm -fr .libs/libfftw3.a

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

# ------------------------ armv7s---------------------------
# Do it all again for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX CC LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ "
export CFLAGS="$CPPFLAGS -arch armv7s  -no-cpp-precomp -miphoneos-version-min=6.1 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7s -std=gnu++11 -stdlib=libc++ "
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7s -std=gnu99 "
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

# Copy the ARM library to a temporary location
cp .libs/libfftw3.a $RESULT_DIR/libfftw3_armv7s.a
rm -fr .libs/libfftw3.a

# ------------------------ arm64 ---------------------------
# Do it all again for arm64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX CC LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ "
export CFLAGS="$CPPFLAGS -arch arm64  -no-cpp-precomp -miphoneos-version-min=6.1 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch arm64 -std=gnu++11 -stdlib=libc++ "
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch arm64 -std=gnu99 "
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

# Copy the ARM library to a temporary location
cp .libs/libfftw3.a ios-library/libfftw3_arm64.a
rm -fr .libs/libfftw3.a

# Create fat lib by combining the two versions
lipo -arch armv7 $RESULT_DIR/libfftw3_armv7.a -arch armv7s $RESULT_DIR/libfftw3_armv7s.a -arch i386 $RESULT_DIR/libfftw3_i386.a -arch x86_64 $RESULT_DIR/libfftw3_x86_64.a -arch arm64 $RESULT_DIR/libfftw3_arm64.a -create -output $RESULT_DIR/libfftw3.a

# Remove intermediate binaries
#rm $RESULT_DIR/libfftw3_armv7.a
#rm $RESULT_DIR/libfftw3_i386.a
#rm $RESULT_DIR/libfftw3_x86_64.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LD LDFLAGS CC CXX CXXFLAGS
回复 原文
好多鱼好多余 2024-09-23 05:04:56

我已将以前的脚本改编为

与 XCODE7 iOS9.3 MACOSX 10.11 FFTW 3.3.4 配合使用

#!/bin/sh

# build_lipo.sh
# build an arm64 / armv7s / armv7 / i386 / x86_64 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884
# changed by garlix
# original: by Nickun
# http://stackoverflow.com/questions/3588904/how-to-link-third-party-libraries-like-fftw3-and-sndfile-to-an-iphone-project-in

######## EDIT HERE ############
export iOS_SDK_VERSION=9.3
export MACOSX_VERSION=10.11
###############################

# this is the folder where the results of our efforts will end up:
export RESULT_DIR=ios-library
export XCODE_DEV_PATH=`xcode-select -print-path`
# Select toolchains folder
export XCODE_TOOLCHAINS=$XCODE_DEV_PATH/Toolchains/XcodeDefault.xctoolchain
# Select the desired iPhone SDK
export DEVROOT_IOS=$XCODE_DEV_PATH/Platforms/iPhoneOS.platform/Developer
export SDKROOT_IOS=$DEVROOT_IOS/SDKs/iPhoneOS$iOS_SDK_VERSION.sdk
# Select the OSX SDK
export DEVROOT_OSX=$XCODE_DEV_PATH/Platforms/MacOSX.platform/Developer
export SDKROOT_OSX=$DEVROOT_OSX/SDKs/MacOSX$MACOSX_VERSION.sdk

export LIB_NAME=libfftw3f

# ------------------------ i386 ---------------------------
# Do it for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

export CFLAGS="-arch i386"

# TODO: error checking
./configure --enable-float --host=i386-apple-darwin9.2.0 --target=i386-apple-darwin9.2.0
make -j2

# Copy the FAT native library to a temporary location
mkdir -p $RESULT_DIR
cp .libs/$LIB_NAME.a $RESULT_DIR/$LIB_NAME\_i386.a

# ------------------------ x86_64 ---------------------------
# Do it all again for x86_64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# TODO: error checking
./configure --enable-float
make -j2

# Copy the FAT native library to the temporary location
cp .libs/$LIB_NAME.a $RESULT_DIR/$LIB_NAME\_x86_64.a

# ------------------------ armv7---------------------------
# Do it all again for armv7
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --enable-float --enable-neon --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

cp .libs/$LIB_NAME.a $RESULT_DIR/$LIB_NAME\_armv7.a

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

# ------------------------ armv7s---------------------------
# Do it all again for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7s -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7s -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7s -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --enable-float --enable-neon --host=arm-apple-darwin --target=arm-apple-darwin
make -j2

# Copy the ARM library to a temporary location
cp .libs/$LIB_NAME.a $RESULT_DIR/$LIB_NAME\_armv7s.a

# ------------------------ arm64 ---------------------------
# Do it all again for arm64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch arm64 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch arm64 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch arm64 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --enable-float --enable-neon --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

# Copy the ARM library to a temporary location
cp .libs/$LIB_NAME.a ios-library/$LIB_NAME\_arm64.a


# Create fat lib by combining the two versions
lipo -arch armv7 $RESULT_DIR/$LIB_NAME\_armv7.a -arch armv7s $RESULT_DIR/$LIB_NAME\_armv7s.a -arch i386 $RESULT_DIR/$LIB_NAME\_i386.a -arch x86_64 $RESULT_DIR/$LIB_NAME\_x86_64.a -arch arm64 $RESULT_DIR/$LIB_NAME\_arm64.a -create -output $RESULT_DIR/$LIB_NAME.a

# Remove intermediate binaries
#rm $RESULT_DIR/libfftw3_armv7.a
#rm $RESULT_DIR/libfftw3_i386.a
#rm $RESULT_DIR/libfftw3_x86_64.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LD LDFLAGS CXX CXXFLAGS

根据@Ninji，您必须修改 Makefile.am

 34c34
 < libbench2 $(CHICKEN_EGG) tests mpi doc tools m4
 ---
 > libbench2 $(CHICKEN_EGG) mpi doc m4
 95,108c95
 < pkgconfig_DATA = fftw3@[email protected]
 < 
 < WISDOM_DIR = /etc/fftw
 < WISDOM = wisdom@PREC_SUFFIX@
 < 
 < WISDOM_TIME=12 # default to 12-hour limit, i.e. overnight
 < WISDOM_FLAGS=--verbose --canonical --time-limit=$(WISDOM_TIME)
 < 
 < wisdom:
 <   tools/fftw@PREC_SUFFIX@-wisdom -o $@ $(WISDOM_FLAGS)
 < 
 < install-wisdom: wisdom
 <   $(mkinstalldirs) $(WISDOM_DIR)
 <   $(INSTALL_DATA) wisdom $(WISDOM_DIR)/$(WISDOM)
 ---
 > pkgconfig_DATA = fftw3@[email protected]
 \ No newline at end of file

和 Makefile.in

235c235
 <    libbench2 . threads tests mpi doc tools m4
 ---
 >    libbench2 . threads mpi doc m4
 447c447
 < libbench2 $(CHICKEN_EGG) tests mpi doc tools m4
 ---
 > libbench2 $(CHICKEN_EGG) mpi doc m4
 1053,1058d1052
 < wisdom:
 <    tools/fftw@PREC_SUFFIX@-wisdom -o $@ $(WISDOM_FLAGS)
 < 
 < install-wisdom: wisdom
 <    $(mkinstalldirs) $(WISDOM_DIR)
 <    $(INSTALL_DATA) wisdom $(WISDOM_DIR)/$(WISDOM)

I've adapted previous scripts to

WORK WITH XCODE7 iOS9.3 MACOSX 10.11 FFTW 3.3.4

#!/bin/sh

# build_lipo.sh
# build an arm64 / armv7s / armv7 / i386 / x86_64 lib of fftw3
# make sure to check that all the paths used in this script exist on your system
#
# adopted from:
# http://robertcarlsen.net/2009/07/15/cross-compiling-for-iphone-dev-884
# changed by garlix
# original: by Nickun
# http://stackoverflow.com/questions/3588904/how-to-link-third-party-libraries-like-fftw3-and-sndfile-to-an-iphone-project-in

######## EDIT HERE ############
export iOS_SDK_VERSION=9.3
export MACOSX_VERSION=10.11
###############################

# this is the folder where the results of our efforts will end up:
export RESULT_DIR=ios-library
export XCODE_DEV_PATH=`xcode-select -print-path`
# Select toolchains folder
export XCODE_TOOLCHAINS=$XCODE_DEV_PATH/Toolchains/XcodeDefault.xctoolchain
# Select the desired iPhone SDK
export DEVROOT_IOS=$XCODE_DEV_PATH/Platforms/iPhoneOS.platform/Developer
export SDKROOT_IOS=$DEVROOT_IOS/SDKs/iPhoneOS$iOS_SDK_VERSION.sdk
# Select the OSX SDK
export DEVROOT_OSX=$XCODE_DEV_PATH/Platforms/MacOSX.platform/Developer
export SDKROOT_OSX=$DEVROOT_OSX/SDKs/MacOSX$MACOSX_VERSION.sdk

export LIB_NAME=libfftw3f

# ------------------------ i386 ---------------------------
# Do it for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

export CFLAGS="-arch i386"

# TODO: error checking
./configure --enable-float --host=i386-apple-darwin9.2.0 --target=i386-apple-darwin9.2.0
make -j2

# Copy the FAT native library to a temporary location
mkdir -p $RESULT_DIR
cp .libs/$LIB_NAME.a $RESULT_DIR/$LIB_NAME\_i386.a

# ------------------------ x86_64 ---------------------------
# Do it all again for x86_64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# TODO: error checking
./configure --enable-float
make -j2

# Copy the FAT native library to the temporary location
cp .libs/$LIB_NAME.a $RESULT_DIR/$LIB_NAME\_x86_64.a

# ------------------------ armv7---------------------------
# Do it all again for armv7
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --enable-float --enable-neon --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

cp .libs/$LIB_NAME.a $RESULT_DIR/$LIB_NAME\_armv7.a

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

# ------------------------ armv7s---------------------------
# Do it all again for i386
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch armv7s -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch armv7s -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch armv7s -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --enable-float --enable-neon --host=arm-apple-darwin --target=arm-apple-darwin
make -j2

# Copy the ARM library to a temporary location
cp .libs/$LIB_NAME.a $RESULT_DIR/$LIB_NAME\_armv7s.a

# ------------------------ arm64 ---------------------------
# Do it all again for arm64
make clean

# Restore default environment variables
unset CPPFLAGS CFLAGS CPP LD CXX LDFLAGS CXXFLAGS

# Set up relevant environment variables
export CPPFLAGS="-I$SDKROOT_IOS/usr/include/ -mfpu=neon"
export CFLAGS="$CPPFLAGS -arch arm64 -mfpu=neon -no-cpp-precomp -miphoneos-version-min=5.0 -isysroot $SDKROOT_IOS"
export LD=$XCODE_TOOLCHAINS/usr/bin/ld
export CXX="$XCODE_TOOLCHAINS/usr/bin/clang -x c++ -arch arm64 -std=gnu++11 -stdlib=libc++ -mfpu=neon"
export CC="$XCODE_TOOLCHAINS/usr/bin/clang -x c -arch arm64 -std=gnu99 -mfpu=neon"
export CXXFLAGS="$CFLAGS"

# TODO: add custom flags as necessary for package
#  remove '--enable-float' for double precision
#  and take a 'libfftw3.a' file instead
./configure --enable-float --enable-neon --host=arm-apple-darwin --target=arm-apple-darwin

make -j2

# Copy the ARM library to a temporary location
cp .libs/$LIB_NAME.a ios-library/$LIB_NAME\_arm64.a


# Create fat lib by combining the two versions
lipo -arch armv7 $RESULT_DIR/$LIB_NAME\_armv7.a -arch armv7s $RESULT_DIR/$LIB_NAME\_armv7s.a -arch i386 $RESULT_DIR/$LIB_NAME\_i386.a -arch x86_64 $RESULT_DIR/$LIB_NAME\_x86_64.a -arch arm64 $RESULT_DIR/$LIB_NAME\_arm64.a -create -output $RESULT_DIR/$LIB_NAME.a

# Remove intermediate binaries
#rm $RESULT_DIR/libfftw3_armv7.a
#rm $RESULT_DIR/libfftw3_i386.a
#rm $RESULT_DIR/libfftw3_x86_64.a

# Unset used environment variables
unset CPPFLAGS CFLAGS CPP LD LDFLAGS CXX CXXFLAGS

According with @Ninji you have to modify Makefile.am

 34c34
 < libbench2 $(CHICKEN_EGG) tests mpi doc tools m4
 ---
 > libbench2 $(CHICKEN_EGG) mpi doc m4
 95,108c95
 < pkgconfig_DATA = fftw3@[email protected]
 < 
 < WISDOM_DIR = /etc/fftw
 < WISDOM = wisdom@PREC_SUFFIX@
 < 
 < WISDOM_TIME=12 # default to 12-hour limit, i.e. overnight
 < WISDOM_FLAGS=--verbose --canonical --time-limit=$(WISDOM_TIME)
 < 
 < wisdom:
 <   tools/fftw@PREC_SUFFIX@-wisdom -o $@ $(WISDOM_FLAGS)
 < 
 < install-wisdom: wisdom
 <   $(mkinstalldirs) $(WISDOM_DIR)
 <   $(INSTALL_DATA) wisdom $(WISDOM_DIR)/$(WISDOM)
 ---
 > pkgconfig_DATA = fftw3@[email protected]
 \ No newline at end of file

and Makefile.in

235c235
 <    libbench2 . threads tests mpi doc tools m4
 ---
 >    libbench2 . threads mpi doc m4
 447c447
 < libbench2 $(CHICKEN_EGG) tests mpi doc tools m4
 ---
 > libbench2 $(CHICKEN_EGG) mpi doc m4
 1053,1058d1052
 < wisdom:
 <    tools/fftw@PREC_SUFFIX@-wisdom -o $@ $(WISDOM_FLAGS)
 < 
 < install-wisdom: wisdom
 <    $(mkinstalldirs) $(WISDOM_DIR)
 <    $(INSTALL_DATA) wisdom $(WISDOM_DIR)/$(WISDOM)
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