如何将第三方库（如fftw3和sndfile）链接到Xcode中的iPhone项目？

时间：2010-08-28 00:24:50

标签： iphone xcode fftw

我正在尝试将第三方库（如fftw3和sndfile）链接到Xcode3.2中的iPhone项目。我通过在项目构建配置下将“Header Search Path”设置为“/ usr / local / include”并将“Other Linker Flags”设置为“-lfftw3 -lsndfile”，使其在常规Mac项目中工作。但是，当我尝试使用相同的设置在iPhone项目中构建它时，它给出了“找不到-lfftw3的库”和退出代码1错误消息。

苹果不允许在iPhone上使用此功能吗？有办法解决这个问题吗？

9 个答案:

答案 0 :(得分：6)

我已经为IOS 5.0+修改了Epskampie的脚本 与OS X 10.7上的fftw3.3.3一起使用，带有IOS SDK 6.0和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

答案 1 :(得分：5)

为了编译fftw3以便在iOS项目中使用，我已经改编了这里发布的脚本： 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。您需要的文件应该最终放在ios-library文件夹中。

答案 2 :(得分：2)

您需要将库构建为通用静态库。这个过程因库而异，但通常都是这样的。

  1. 将库构建为不同平台的静态库（至少是armv6和i386）
  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xcode项目中
  4. 将标题文件拖放到xcode项目中

    5. 步骤1通常是最棘手的，因为许多库具有不同的构建过程。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。

答案 3 :(得分：2)

我为Mac OS X 10.9.2，iOS 7.1，fftw-3.3.4修改了Nickun的脚本。它还为fat文件添加了一个arm64切片。这是脚本 - ＆gt; 

#!/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

答案 4 :(得分：1)

并不是Apple不允许使用该库，而是您链接的版本是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，您可能会有点顽皮，并在主项目中包含第三方来源。顽皮，但它会证明苹果不会阻止你，并显示图书馆是否会在手机上运行OK。

将代码保存在单独构建的库项目中会更清晰。

答案 5 :(得分：1)

为iOS构建FFTW3：

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

享受它！

Q.some

答案 6 :(得分：0)

我尝试了亚当弗里曼的剧本，它很棒，但是我必须做以下工作才能使它工作， 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，这样我就可以通过带有arm架构的Xcode构建它的++ 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

解决方法是去除＆＃34;测试＆＃34;，＆＃34;工具＆＃34;的制作规则。文件夹和任何fftw - ＆＃34;智慧＆＃34; Makefile.in和Makefile.am中的相关内容，我不知道这两个文件夹中的文件有多重要，但我不得不将它们删除，因此fftw build可以成功而不会出现UTF-8错误

我还要修改脚本（我唤醒了霓虹灯和浮动精度标志，再次我也不知道那些标志有多重要）

#!/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

答案 7 :(得分：0)

我已将之前的脚本改编为

使用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

根据@Ninji，你必须修改Makefile.am 

 34c34
 < libbench2 $(CHICKEN_EGG) tests mpi doc tools m4
 ---
 > libbench2 $(CHICKEN_EGG) mpi doc m4
 95,108c95
 < pkgconfig_DATA = fftw3@PREC_SUFFIX@.pc
 < 
 < WISDOM_DIR = /etc/fftw
 < WISDOM = wisdom@PREC_SUFFIX@
 < 
 < WISDOM_TIME=12 # default to 12-hour limit, i.e. overnight
 < WISDOM_FLAGS=--verbose --canonical --time-limit=$(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@PREC_SUFFIX@.pc
 \ 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)

答案 8 :(得分：0)

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"
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