ios - 如何成功地将 ImageMagick 集成到 iOS 中？

Question

我目前有一个链接器错误，大约 44 次引用了架构 x86_64 的 undefined symbol 。所有这些都来自一个集成文件“libMagickCore.a”，所以我试图寻找“架构 x86_64 libmagickcore.a 的 undefined symbol ”的解决方案
我在这里看到了解决方案Undefined symbols for architecture x86_64 ImageMagick on Mac Lion它解决了 Mac Lion 上的类似问题。我还查看了 ImageMagick 板上的类似问题。我发现的线程和 Stack Overflow 链接似乎都在谈论包含或明确排除 X11 库。

我试图在build设置下将“-lX11”添加到“其他链接器标志”，但最终得到“找不到 -lX11 的库”。因此，我还尝试将 libX11.dylib 从/opt/X11/lib 拖到我的 XCode 项目中，但无济于事。关于 ImageMagick 板上类似问题的建议是使用“--without-wmf”“--without-x11”标志，但我不知道要在没有编译器错误的情况下将其添加到build设置的哪个键/值对说“不支持的选项”。

这些是链接器错误:

Undefined symbols for architecture x86_64:
  "_xmlAddAttributeDecl", referenced from:
      _MSLAttributeDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGAttributeDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlAddChild", referenced from:
      _MSLReference in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _MSLCDataBlock in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGReference in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
      _SVGCDataBlock in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlAddDocEntity", referenced from:
      _MSLEntityDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _MSLUnparsedEntityDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGEntityDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
      _SVGUnparsedEntityDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlAddDtdEntity", referenced from:
      _MSLEntityDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGEntityDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlAddElementDecl", referenced from:
      _MSLElementDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGElementDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlAddNotationDecl", referenced from:
      _MSLNotationDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGNotationDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlCleanupParser", referenced from:
      _UnregisterMSLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _UnregisterSVGImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlCreateIntSubset", referenced from:
      _MSLInternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGInternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlCreatePushParserCtxt", referenced from:
      _ProcessMSLScript in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _ReadSVGImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlDetectCharEncoding", referenced from:
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlFree", referenced from:
      _MSLAttributeDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGAttributeDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlFreeDoc", referenced from:
      _SVGEndDocument in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlFreeInputStream", referenced from:
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlFreeParserCtxt", referenced from:
      _ProcessMSLScript in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _ReadSVGImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlGetDocEntity", referenced from:
      _MSLGetEntity in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGGetEntity in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlGetLastChild", referenced from:
      _MSLCDataBlock in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGCDataBlock in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlGetParameterEntity", referenced from:
      _MSLGetParameterEntity in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGGetParameterEntity in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlInitParser", referenced from:
      _RegisterMSLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _RegisterSVGImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlLoadExternalEntity", referenced from:
      _MSLResolveEntity in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGResolveEntity in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlMalloc", referenced from:
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlNanoFTPClose", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNanoFTPConnect", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNanoFTPGet", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNanoFTPInit", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNanoFTPNewCtxt", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNanoHTTPCleanup", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNanoHTTPClose", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNanoHTTPMethod", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNanoHTTPRead", referenced from:
      _ReadURLImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-url.o)
  "_xmlNewCDataBlock", referenced from:
      _MSLCDataBlock in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGCDataBlock in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlNewCharRef", referenced from:
      _MSLReference in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGReference in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlNewDoc", referenced from:
      _MSLStartDocument in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGStartDocument in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlNewDtd", referenced from:
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlNewReference", referenced from:
      _MSLReference in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGReference in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlParseChunk", referenced from:
      _ProcessMSLScript in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _ReadSVGImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlParseExternalSubset", referenced from:
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlPopInput", referenced from:
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlPushInput", referenced from:
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlSplitQName", referenced from:
      _MSLAttributeDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGAttributeDeclaration in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlStrdup", referenced from:
      _MSLStartDocument in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGStartDocument in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlSubstituteEntitiesDefault", referenced from:
      _ProcessMSLScript in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _ReadSVGImage in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlSwitchEncoding", referenced from:
      _MSLExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGExternalSubset in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
  "_xmlTextConcat", referenced from:
      _MSLCDataBlock in libMagickCore.a(magick_libMagickCore_6_Q8_la-msl.o)
      _SVGCDataBlock in libMagickCore.a(magick_libMagickCore_6_Q8_la-svg.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

通过转到“构建阶段”并将二进制文件与库链接，将“libxml2.2.tbd”添加到项目中解决了该问题。