上回讲到framework的创建和使用，这回我们来讲讲静态库和动态库。各位看官往下看。
1. 什么是静态库和动态库？
静态库：链接时完整地拷贝至执行文件中，被多次使用就有多份冗余拷贝。
动态库：链接时不复制，程序运行时由系统动态加载到内存，供程序调用，系统只加载一次，多个程序共用，节省内存。
我们一开始创建的默认framework就是动态的，我们可以在Build settings->mach-O Type里修改static library来改成静态库。
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我们改成static library后运行，然后从products里把framework拷贝到之前那个sdk文件夹，因为是静态库，demo里配置改成Do Not Embed，运行demo我们可以看到也能成功打印。
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2. 脚本编写
但是每次从products去拷贝framework有点麻烦，有没有办法可以自动生成framework到我们项目指定的文件下底下呢？有，xcode里我们可以编写脚本来实现。
1.首先我们先新建一个target。
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2.然后添加一个run script phase
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3.添加依赖
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4.脚本编写，我们先编写个静态库的脚本
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上一下代码
# Sets the target folders and the final framework product.
FMK_NAME=TestFramework
# Install dir will be the final output to the framework.
# The following line create it in the root folder of the current project.
INSTALL_DIR=${SRCROOT}/../sdk/framework/${FMK_NAME}.framework
# Working dir will be deleted after the framework creation.
WRK_DIR=build
DEVICE_DIR=${WRK_DIR}/Release-iphoneos/${FMK_NAME}.framework
SIMULATOR_DIR=${WRK_DIR}/Release-iphonesimulator/${FMK_NAME}.framework
# -configuration ${CONFIGURATION}
# Clean and Building both architectures.
xcodebuild -configuration "Release" -target "TestFramework" -sdk iphoneos clean
xcodebuild -configuration "Release" -target "TestFramework" -sdk iphonesimulator clean
xcodebuild OTHER_CFLAGS="-fembed-bitcode" -configuration "Release" -target "TestFramework" -sdk iphoneos build
xcodebuild OTHER_CFLAGS="-fembed-bitcode" -configuration "Release" -target "TestFramework" -sdk iphonesimulator build
# Cleaning the oldest.
if [ -d "${INSTALL_DIR}" ]
then
rm -rf "${INSTALL_DIR}"
fi
mkdir -p "${INSTALL_DIR}"
cp -R "${DEVICE_DIR}/" "${INSTALL_DIR}/"
# Uses the Lipo Tool to merge both binary files (i386 + armv6/armv7) into one Universal final product.
lipo -create "${DEVICE_DIR}/${FMK_NAME}" "${SIMULATOR_DIR}/${FMK_NAME}" -output "${INSTALL_DIR}/${FMK_NAME}"
rm -r "${WRK_DIR}"
5.最后，我们运行脚本target，可以看到在项目sdk文件夹下生成了个framework
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6.动态库和静态库前面步骤都一样，除了脚本不一样，就直接上脚本代码
# Sets the target folders and the final framework product.
FMK_NAME=TestFramework
# Install dir will be the final output to the framework.
# The following line create it in the root folder of the current project.
INSTALL_DIR=${SRCROOT}/../sdk/${FMK_NAME}.framework
# Working dir will be deleted after the framework creation.
WRK_DIR=build
DEVICE_DIR=${WRK_DIR}/Release-iphoneos/${FMK_NAME}.framework
# -configuration ${CONFIGURATION}
# Clean and Building both architectures.
xcodebuild -configuration "Release" -target "TestFramework" -sdk iphoneos clean build
# Cleaning the oldest.
if [ -d "${INSTALL_DIR}" ]
then
rm -rf "${INSTALL_DIR}"
fi
mkdir -p "${INSTALL_DIR}"
cp -R "${DEVICE_DIR}/" "${INSTALL_DIR}/"
# Uses the Lipo Tool to merge both binary files (i386 + armv6/armv7) into one Universal final product.
lipo -create "${DEVICE_DIR}/${FMK_NAME}" -output "${INSTALL_DIR}/${FMK_NAME}"
rm -r "${WRK_DIR}"
