#!/bin/bash
# 請自行修改路徑，cd到boost解壓後的目錄下
dir=`dirname $0`
cd "$dir/../../public_libs/boost_1_56_0"
# 如果庫文件已存在，直接退出
if [ -e ./stage/lib/libboost_date_time.a ]; then
echo "libraries exist. no need to build."
exit 0
fi
: ${COMPILER:="clang++"}
: ${IPHONE_SDKVERSION:=`xcodebuild -showsdks | grep iphoneos | egrep "[[:digit:]]+\.[[:digit:]]+" -o | tail -1`}
: ${XCODE_ROOT:=`xcode-select -print-path`}
: ${EXTRA_CPPFLAGS:="-stdlib=libc++ -std=gnu++11"}
echo "IPHONE_SDKVERSION: $IPHONE_SDKVERSION"
echo "XCODE_ROOT: $XCODE_ROOT"
echo "COMPILER: $COMPILER"
echo "bootstrap"
# 此腳本如果是被Xcode調用的話，會因爲xcode export的某些變量導致失敗，所以加了env -i。直接在命令行運行此腳本可以把env -i 去掉
env -i bash ./bootstrap.sh
echo "write project-config.jam"
# 默認生存的project-config.jam是編譯Mac版的，這裏直接調換掉
rm project-config.jam
cat >> project-config.jam <<EOF
using darwin : ${IPHONE_SDKVERSION}~iphone
: $XCODE_ROOT/Toolchains/XcodeDefault.xctoolchain/usr/bin/$COMPILER -arch armv7 -arch armv7s -arch arm64 $EXTRA_CPPFLAGS
: <striper> <root>$XCODE_ROOT/Platforms/iPhoneOS.platform/Developer
: <architecture>arm <target-os>iphone
;
using darwin : ${IPHONE_SDKVERSION}~iphonesim
: $XCODE_ROOT/Toolchains/XcodeDefault.xctoolchain/usr/bin/$COMPILER -arch i386 -arch x86_64 $EXTRA_CPPFLAGS
: <striper> <root>$XCODE_ROOT/Platforms/iPhoneSimulator.platform/Developer
: <architecture>ia64 <target-os>iphone
;
EOF
# 上面的代碼裏，兩個using darwin分別是編譯真機版和模擬器版的設置。每多一種CPU架構就要再加一個-arch xxx。
echo "build boost iphone dev"
./bjam -j16 --with-iostreams --with-regex --with-timer --with-exception --with-chrono --with-serialization --with-signals --with-date_time --with-filesystem --with-system --with-thread --build-dir=iphone-build --stagedir=iphone-build/stage toolset=darwin architecture=arm target-os=iphone macosx-version=iphone-${IPHONE_SDKVERSION} define=_LITTLE_ENDIAN link=static stage
echo "build boost iphone sim"
./bjam -j16 --with-iostreams --with-regex --with-timer --with-exception --with-chrono --with-serialization --with-signals --with-date_time --with-filesystem --with-system --with-thread --build-dir=iphonesim-build --stagedir=iphonesim-build/stage --toolset=darwin-${IPHONE_SDKVERSION}~iphonesim architecture=ia64 target-os=iphone macosx-version=iphonesim-${IPHONE_SDKVERSION} link=static stage cxxflags=-miphoneos-version-min=7.0
echo "lipo"
# 把各架構下的庫文件合一，以便在xcode裏可以少設置些搜索路徑。做得更徹底些是各個分庫合成一個大庫。不過除非是把靜態庫加入到代碼倉庫，否則是浪費時間了。要合成的大庫話請參考https://gist.github.com/rsobik/7513324原文。
mkdir -p stage/lib
lipo -create iphone-build/stage/lib/libboost_iostreams.a iphonesim-build/stage/lib/libboost_iostreams.a -output stage/lib/libboost_iostreams.a
lipo -create iphone-build/stage/lib/libboost_regex.a iphonesim-build/stage/lib/libboost_regex.a -output stage/lib/libboost_regex.a
lipo -create iphone-build/stage/lib/libboost_timer.a iphonesim-build/stage/lib/libboost_timer.a -output stage/lib/libboost_timer.a
lipo -create iphone-build/stage/lib/libboost_exception.a iphonesim-build/stage/lib/libboost_exception.a -output stage/lib/libboost_exception.a
lipo -create iphone-build/stage/lib/libboost_chrono.a iphonesim-build/stage/lib/libboost_chrono.a -output stage/lib/libboost_chrono.a
lipo -create iphone-build/stage/lib/libboost_serialization.a iphonesim-build/stage/lib/libboost_serialization.a -output stage/lib/libboost_serialization.a
lipo -create iphone-build/stage/lib/libboost_signals.a iphonesim-build/stage/lib/libboost_signals.a -output stage/lib/libboost_signals.a
lipo -create iphone-build/stage/lib/libboost_atomic.a iphonesim-build/stage/lib/libboost_atomic.a -output stage/lib/libboost_atomic.a
lipo -create iphone-build/stage/lib/libboost_wserialization.a iphonesim-build/stage/lib/libboost_wserialization.a -output stage/lib/libboost_wserialization.a
lipo -create iphone-build/stage/lib/libboost_date_time.a iphonesim-build/stage/lib/libboost_date_time.a -output stage/lib/libboost_date_time.a
lipo -create iphone-build/stage/lib/libboost_filesystem.a iphonesim-build/stage/lib/libboost_filesystem.a -output stage/lib/libboost_filesystem.a
lipo -create iphone-build/stage/lib/libboost_system.a iphonesim-build/stage/lib/libboost_system.a -output stage/lib/libboost_system.a
lipo -create iphone-build/stage/lib/libboost_thread.a iphonesim-build/stage/lib/libboost_thread.a -output stage/lib/libboost_thread.a
# 庫文件最終放在./stage/lib/下
echo "Completed successfully"
此腳本參考了一篇對原腳本註釋後的文章，文章具體出處忘了。我在這個腳本的基礎上，擴展了boost的編譯參數，把常用的庫全部編譯了一下
另外 EXTRA_CPPFLAGS 那邊原本加入了 -DBOOST_AC_USE_PTHREADS -DBOOST_SP_USE_PTHREADS 兩個宏，應該去掉