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我正在尝试将我的应用程序移至 64 位 arm 处理器（和 64 位模拟器），为此我需要重新编译 ICU 库 (49)。

三天后，我达到了库编译良好的地步，我使用的脚本将各种架构组合在一起（片段）：

# ...

#x86_64
DEVROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer
SDKROOT=$DEVROOT/SDKs/iPhoneSimulator7.0.sdk
SYSROOT=$SDKROOT

export CFLAGS="-I$SDKROOT/usr/include/ -I./include/ $ICU_FLAGS -arch x86_64 -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=7.0 -O3 -DU_HAVE_GCC_ATOMICS=0"
export CXXFLAGS="$CFLAGS"
export CC="$TOOLCHAINSROOT/usr/bin/clang"
export CXX="$TOOLCHAINSROOT/usr/bin/clang++"
export LDFLAGS="-L$SDKROOT/usr/lib/ -isysroot $SDKROOT -Wl,-dead_strip  -miphoneos-version-min=7.0"

mkdir -p $BUILDDIR/iosbuild/x86_64
cd $BUILDDIR/iosbuild/x86_64
gnumake clean
sh $ICU_PATH/source/configure --host=arm-apple-darwin --enable-static --disable-shared -with-cross-build=$BUILDDIR/hostbuild --prefix=$BUILDDIR/iosbuild/x86_64 --with-data-packaging=library
gnumake
gnumake clean install

# ...


#x86_64
mkdir -p ${BUILDDIR}/iosbuild/x86_64/lib/libicudata
cd ${BUILDDIR}/iosbuild/x86_64/lib/libicudata
ar -x "${BUILDDIR}/iosbuild/x86_64/lib/libicudata.a"

mkdir -p ${BUILDDIR}/iosbuild/x86_64/lib/libicui18n
cd ${BUILDDIR}/iosbuild/x86_64/lib/libicui18n
ar -x "${BUILDDIR}/iosbuild/x86_64/lib/libicui18n.a"

mkdir -p ${BUILDDIR}/iosbuild/x86_64/lib/libicuio
cd ${BUILDDIR}/iosbuild/x86_64/lib/libicuio
ar -x "${BUILDDIR}/iosbuild/x86_64/lib/libicuio.a"

mkdir -p ${BUILDDIR}/iosbuild/x86_64/lib/libicule
cd ${BUILDDIR}/iosbuild/x86_64/lib/libicule
ar -x "${BUILDDIR}/iosbuild/x86_64/lib/libicule.a"

mkdir -p ${BUILDDIR}/iosbuild/x86_64/lib/libiculx
cd ${BUILDDIR}/iosbuild/x86_64/lib/libiculx
ar -x "${BUILDDIR}/iosbuild/x86_64/lib/libiculx.a"

mkdir -p ${BUILDDIR}/iosbuild/x86_64/lib/libicutest
cd ${BUILDDIR}/iosbuild/x86_64/lib/libicutest
ar -x "${BUILDDIR}/iosbuild/x86_64/lib/libicutest.a"

mkdir -p ${BUILDDIR}/iosbuild/x86_64/lib/libicutu
cd ${BUILDDIR}/iosbuild/x86_64/lib/libicutu
ar -x "${BUILDDIR}/iosbuild/x86_64/lib/libicutu.a"

mkdir -p ${BUILDDIR}/iosbuild/x86_64/lib/libicuuc
cd ${BUILDDIR}/iosbuild/x86_64/lib/libicuuc
ar -x "${BUILDDIR}/iosbuild/x86_64/lib/libicuuc.a"

ar -qc ${BUILDDIR}/iosbuild/x86_64/lib/libcombinedicu.a ${BUILDDIR}/iosbuild/x86_64/lib/libicudata/*.o ${BUILDDIR}/iosbuild/x86_64/lib/libicudata/*.ao ${BUILDDIR}/iosbuild/x86_64/lib/libicuuc/*.ao ${BUILDDIR}/iosbuild/x86_64/lib/libicui18n/*.ao ${BUILDDIR}/iosbuild/x86_64/lib/libicuio/*.ao ${BUILDDIR}/iosbuild/x86_64/lib/libicule/*.ao ${BUILDDIR}/iosbuild/x86_64/lib/libiculx/*.ao ${BUILDDIR}/iosbuild/x86_64/lib/libicutest/*.ao ${BUILDDIR}/iosbuild/x86_64/lib/libicutu/*.ao ${BUILDDIR}/iosbuild/x86_64/lib/libicuuc/*.ao

# ...

#put them together
lipo -create -arch x86_64 "${BUILDDIR}/iosbuild/x86_64/lib/libcombinedicu.a"
             -arch i386 "${BUILDDIR}/iosbuild/i386/lib/libcombinedicu.a" 
                        "${BUILDDIR}/iosbuild/arm64/lib/libcombinedicu.a" 
                        "${BUILDDIR}/iosbuild/armv7s/lib/libcombinedicu.a"
             -arch armv7 "${BUILDDIR}/iosbuild/armv7/lib/libcombinedicu.a"
             -o "$FRAMEWORK_DIR/Versions/Current/$FRAMEWORK_NAME"

问题是，当我从 XCode（对于 64 位模拟器）编译应用程序时，我收到有关构建的 ICU 框架的以下错误：

ld: warning: directory not found for option '-F"/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxPro/../BIMxEngine/extern/icu"'

duplicate symbol _OSAtomicIncrement32 in:
/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxEngine/extern/icu/ICU.framework/ICU(unistr.ao)
/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxEngine/extern/icu/ICU.framework/ICU(mutex.ao)

duplicate symbol _OSAtomicIncrement32Barrier in:
/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxEngine/extern/icu/ICU.framework/ICU(unistr.ao)
/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxEngine/extern/icu/ICU.framework/ICU(mutex.ao)

duplicate symbol _OSAtomicDecrement32 in:
/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxEngine/extern/icu/ICU.framework/ICU(unistr.ao)
/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxEngine/extern/icu/ICU.framework/ICU(mutex.ao)

duplicate symbol _OSAtomicDecrement32Barrier in:
/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxEngine/extern/icu/ICU.framework/ICU(unistr.ao)
/Users/gliptak/ac/m-220/Sources/VBExplorer/BIMxEngine/extern/icu/ICU.framework/ICU(mutex.ao)

...

ld: 64 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

据我所知，上述函数是在系统头文件中声明的，并且不是内联的，那么这个错误怎么会存在呢？

你有什么想法我可能做错了吗？

更新：确实，这些函数是静态内联的，所以它们会导致问题。所以现在的问题是如何避免重复？

更新：尝试了 C 编译器的 -std=gnu89 标志，没有效果......

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1 回答 1

0

在这里找到了一个解决方案（确认在/为小牛队工作）。也可以使用 icu4c 的 SVN 主干解决，因为它使用 C++11 屏障。

于 2013-10-06T05:45:11.487 回答