Xcode - 找不到架构x86_64的符号（iOS Lib）

Question

我正在构建一个静态库。构建设置的体系结构设置为：$(ARCHS_STANDARD)，显示为Standard Architectures (armv7, armv7s, arm64)我构建lib选择iOS设备然后使用模拟器（例如iPhone Retina）。

现在我有两个构建（一个在Debug-iphoneos内，另一个在Debug-iphonesimulator内，我使用lipo -create来创建聚合的lib：

lipo -create path/to/first/lib /path/to/second/lib -o MyLib.a

如果我在另一个项目中使用此库在任何具有64位架构的iOS设备上进行模拟，则会提供symbol(s) not found for architecture x86_64。是什么让我如此愤怒，以至于lib​​项目本身位于工作区内，另一个项目使用lib。我可以在64位iOS模拟器上模拟！ （在所有模拟器和设备上）。我做错了什么？

注意：

1. 这不重复Q.在指责我之前（因为这是我第二天试图解决这个愚蠢的问题），我在Stack和Google上进行了搜索。所有答案都没有帮助。
2. 我正在使用Xcode 5.1.1。

Answer 1

构建静态库时遇到了同样的问题 最后我找到了基本的解决方案。 （您需要为x86_64 / armv7 / armv7s / arm64建立通用库

1）点击项目文件
2）点击目标
3）打开"Build Phases"
4）打开"Run Script"
5）添加"/bin/sh"和下面的脚本

##########################################
#
# c.f. http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4
#
# Version 2.7
#
# Latest Change:
# - Supports iPhone 5 / iPod Touch 5 (uses Apple's workaround to lipo bug)
#
# Purpose:
#   Automatically create a Universal static library for iPhone + iPad + iPhone Simulator from within XCode
#
# Author: Adam Martin - http://twitter.com/redglassesapps
# Based on: original script from Eonil (main changes: Eonil's script WILL NOT WORK in Xcode GUI - it WILL CRASH YOUR COMPUTER)
#

set -e
set -o pipefail

#################[ Tests: helps workaround any future bugs in Xcode ]########
#
DEBUG_THIS_SCRIPT="false"

if [ $DEBUG_THIS_SCRIPT = "true" ]
then
echo "########### TESTS #############"
echo "Use the following variables when debugging this script; note that they may change on recursions"
echo "BUILD_DIR = $BUILD_DIR"
echo "BUILD_ROOT = $BUILD_ROOT"
echo "CONFIGURATION_BUILD_DIR = $CONFIGURATION_BUILD_DIR"
echo "BUILT_PRODUCTS_DIR = $BUILT_PRODUCTS_DIR"
echo "CONFIGURATION_TEMP_DIR = $CONFIGURATION_TEMP_DIR"
echo "TARGET_BUILD_DIR = $TARGET_BUILD_DIR"
fi

#####################[ part 1 ]##################
# First, work out the BASESDK version number (NB: Apple ought to report this, but they hide it)
#    (incidental: searching for substrings in sh is a nightmare! Sob)

SDK_VERSION=$(echo ${SDK_NAME} | grep -o '.\{3\}$')

# Next, work out if we're in SIM or DEVICE

if [ ${PLATFORM_NAME} = "iphonesimulator" ]
then
OTHER_SDK_TO_BUILD=iphoneos${SDK_VERSION}
else
OTHER_SDK_TO_BUILD=iphonesimulator${SDK_VERSION}
fi

echo "XCode has selected SDK: ${PLATFORM_NAME} with version: ${SDK_VERSION} (although back-targetting: ${IPHONEOS_DEPLOYMENT_TARGET})"
echo "...therefore, OTHER_SDK_TO_BUILD = ${OTHER_SDK_TO_BUILD}"
#
#####################[ end of part 1 ]##################

#####################[ part 2 ]##################
#
# IF this is the original invocation, invoke WHATEVER other builds are required
#
# Xcode is already building ONE target...
#
# ...but this is a LIBRARY, so Apple is wrong to set it to build just one.
# ...we need to build ALL targets
# ...we MUST NOT re-build the target that is ALREADY being built: Xcode WILL CRASH YOUR COMPUTER if you try this (infinite recursion!)
#
#
# So: build ONLY the missing platforms/configurations.

if [ "true" == ${ALREADYINVOKED:-false} ]
then
echo "RECURSION: I am NOT the root invocation, so I'm NOT going to recurse"
else
# CRITICAL:
# Prevent infinite recursion (Xcode sucks)
export ALREADYINVOKED="true"

echo "RECURSION: I am the root ... recursing all missing build targets NOW..."
echo "RECURSION: ...about to invoke: xcodebuild -configuration \"${CONFIGURATION}\" -project \"${PROJECT_NAME}.xcodeproj\" -target \"${TARGET_NAME}\" -sdk \"${OTHER_SDK_TO_BUILD}\" ${ACTION} RUN_CLANG_STATIC_ANALYZER=NO" BUILD_DIR=\"${BUILD_DIR}\" BUILD_ROOT=\"${BUILD_ROOT}\" SYMROOT=\"${SYMROOT}\"

xcodebuild -configuration "${CONFIGURATION}" -project "${PROJECT_NAME}.xcodeproj" -target "${TARGET_NAME}" -sdk "${OTHER_SDK_TO_BUILD}" ${ACTION} RUN_CLANG_STATIC_ANALYZER=NO BUILD_DIR="${BUILD_DIR}" BUILD_ROOT="${BUILD_ROOT}" SYMROOT="${SYMROOT}"

ACTION="build"

#Merge all platform binaries as a fat binary for each configurations.

# Calculate where the (multiple) built files are coming from:
CURRENTCONFIG_DEVICE_DIR=${SYMROOT}/${CONFIGURATION}-iphoneos
CURRENTCONFIG_SIMULATOR_DIR=${SYMROOT}/${CONFIGURATION}-iphonesimulator

echo "Taking device build from: ${CURRENTCONFIG_DEVICE_DIR}"
echo "Taking simulator build from: ${CURRENTCONFIG_SIMULATOR_DIR}"

CREATING_UNIVERSAL_DIR=${SYMROOT}/${CONFIGURATION}-universal
echo "...I will output a universal build to: ${CREATING_UNIVERSAL_DIR}"

# ... remove the products of previous runs of this script
#      NB: this directory is ONLY created by this script - it should be safe to delete!

rm -rf "${CREATING_UNIVERSAL_DIR}"
mkdir "${CREATING_UNIVERSAL_DIR}"

#
echo "lipo: for current configuration (${CONFIGURATION}) creating output file: ${CREATING_UNIVERSAL_DIR}/${EXECUTABLE_NAME}"
xcrun -sdk iphoneos lipo -create -output "${CREATING_UNIVERSAL_DIR}/${EXECUTABLE_NAME}" "${CURRENTCONFIG_DEVICE_DIR}/${EXECUTABLE_NAME}" "${CURRENTCONFIG_SIMULATOR_DIR}/${EXECUTABLE_NAME}"

#########
#
# Added: StackOverflow suggestion to also copy "include" files
#    (untested, but should work OK)
#
echo "Fetching headers from ${PUBLIC_HEADERS_FOLDER_PATH}"
echo "  (if you embed your library project in another project, you will need to add"
echo "   a "User Search Headers" build setting of: (NB INCLUDE THE DOUBLE QUOTES BELOW!)"
echo '        "$(TARGET_BUILD_DIR)/usr/local/include/"'
if [ -d "${CURRENTCONFIG_DEVICE_DIR}${PUBLIC_HEADERS_FOLDER_PATH}" ]
then
mkdir -p "${CREATING_UNIVERSAL_DIR}${PUBLIC_HEADERS_FOLDER_PATH}"
# * needs to be outside the double quotes?
cp -r "${CURRENTCONFIG_DEVICE_DIR}${PUBLIC_HEADERS_FOLDER_PATH}"* "${CREATING_UNIVERSAL_DIR}${PUBLIC_HEADERS_FOLDER_PATH}"
fi
fi

6）点击"cmd + B"（建设项目）

7）在Finder

中打开产品

8）向上导航1个目录（“cmd +↑”），您将看到"Release-universal"目录。

你的"fat/universal"图书馆，你准备好了！

Answer 2

当我尝试在iPhone Retina 64bit模拟器中测试时，我在我的一个应用程序中使用了框架库。

我只是添加了x86_64作为构建的体系结构，并将其设置为始终为所有体系结构构建。工作了一个魅力。

Answer 3

lipo工具不仅可以创建胖子二进制文件，还可以检查它们： xcrun lipo -info /path/to/libThing.a

这将输出文件中的架构。在使用lipo加入二进制文件之前，请运行此命令以确保您期望的体系结构存在。在胖二进制连接的产品上运行它也是一个好主意。

在您的情况下，您需要：

iPhoneSDK配置： armv7，armv7s，arm64

iPhoneSimulator配置： i386，x86_64

似乎iPhoneSimulator构建产品没有根据您的问题生成x86_64二进制文件。检查构建配置 - 特别是“仅构建活动体系结构”（ONLY_ACTIVE_ARCH）应设置为NO。默认情况下，Release为NO，但调试为YES。如果是，则构建产品中只有一个体系结构。

Answer 4

转到您的应用程序项目目标并查看图书馆搜索路径。

现在检查您的库文件路径是否应该用双引号括起来：

"$(SRCROOT)/MyAppTest/TestFlight"

如果没有双引号，则只需添加它们并编译项目。

希望它对你有用。