链接器错误“；未解析的外部符号“UU imp”UU iob“U func”；在libpng.lib中

我正在尝试为Windows Mobile 6编译libpng，但遇到以下链接器错误：

error LNK2019: unresolved external symbol __imp___iob_func referenced in function png_default_error libpng.lib
error LNK2019: unresolved external symbol __imp_abort referenced in function png_longjmp

编译是使用/MD选项完成的，在我的主项目之间也是如此。zlib和libpng

如果改用/MT，仍然会有错误，但略有不同：

error LNK2019: unresolved external symbol __iob_func referenced in function png_default_error
error LNK2019: unresolved external symbol abort referenced in function png_longjmp

这带来了几个问题

什么是

\uuuu imp\uu iob\u func

和

\uu imp\u abort

它们在哪里实施？或者，如何排除对它们的引用

我的libpng编译器选项：

/Od /I "..\lib\zlib-1.2.7" /I "..\lib\lpng1512" /D "_DEBUG" /D "_WIN32_WCE=0x502" /D "UNDER_CE" /D "WIN32_PLATFORM_PSPC" /D "WINCE" /D "DEBUG" /D "_WINDOWS" /D "_USRDLL" /D "LIBPNG_EXPORTS" /D "ARM" /D "_ARM_" /D "_UNICODE" /D "UNICODE" /Gm /EHsc /MDd /fp:fast /GR- /Fo"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/" /Fd"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/vc80.pdb" /W3 /nologo /c /Zi /TC /QMFPE-

/Od /I "..\lib\lpng1512" /D "_DEBUG" /D "_WIN32_WCE=0x502" /D "UNDER_CE" /D "WIN32_PLATFORM_PSPC" /D "WINCE" /D "DEBUG" /D "_LIB" /D "ARM" /D "_ARM_" /D "_UNICODE" /D "UNICODE" /D "_WINDLL" /Gm /EHsc /MDd /fp:fast /GR- /Yu"stdafx.h" /Fp"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/libpngStreamWrap.pch" /Fo"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/" /Fd"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/vc80.pdb" /W3 /nologo /c /Zi /TP

/OUT:"Windows Mobile 6 Professional SDK (ARMV4I)\Debug\libpngStreamWrap.dll" /NOLOGO /DLL /MANIFEST:NO /NODEFAULTLIB:"oldnames.lib" /DYNAMICBASE /NXCOMPAT /ERRORREPORT:PROMPT coredll.lib corelibc.lib ole32.lib oleaut32.lib uuid.lib commctrl.lib "..\libpng\windows mobile 6 professional sdk (armv4i)\debug\libpng.lib" "..\zlib\windows mobile 6 professional sdk (armv4i)\debug\zlib.lib"  /SUBSYSTEM:WINDOWSCE,5.02 /VERBOSE:lib

图书馆员选项：

/OUT:"Windows Mobile 6 Professional SDK (ARMV4I)\Debug\libpng.lib" /LIBPATH:"C:\Program Files\Windows Mobile 6 SDK\PocketPC\Lib\Armv4i" /NOLOGO /NODEFAULTLIB Coredll.lib /SUBSYSTEM:WINDOWSCE,5.02

我的项目（libpngStreamWrap）编译器选项：

/Od /I "..\lib\zlib-1.2.7" /I "..\lib\lpng1512" /D "_DEBUG" /D "_WIN32_WCE=0x502" /D "UNDER_CE" /D "WIN32_PLATFORM_PSPC" /D "WINCE" /D "DEBUG" /D "_WINDOWS" /D "_USRDLL" /D "LIBPNG_EXPORTS" /D "ARM" /D "_ARM_" /D "_UNICODE" /D "UNICODE" /Gm /EHsc /MDd /fp:fast /GR- /Fo"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/" /Fd"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/vc80.pdb" /W3 /nologo /c /Zi /TC /QMFPE-

/Od /I "..\lib\lpng1512" /D "_DEBUG" /D "_WIN32_WCE=0x502" /D "UNDER_CE" /D "WIN32_PLATFORM_PSPC" /D "WINCE" /D "DEBUG" /D "_LIB" /D "ARM" /D "_ARM_" /D "_UNICODE" /D "UNICODE" /D "_WINDLL" /Gm /EHsc /MDd /fp:fast /GR- /Yu"stdafx.h" /Fp"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/libpngStreamWrap.pch" /Fo"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/" /Fd"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/vc80.pdb" /W3 /nologo /c /Zi /TP

/OUT:"Windows Mobile 6 Professional SDK (ARMV4I)\Debug\libpngStreamWrap.dll" /NOLOGO /DLL /MANIFEST:NO /NODEFAULTLIB:"oldnames.lib" /DYNAMICBASE /NXCOMPAT /ERRORREPORT:PROMPT coredll.lib corelibc.lib ole32.lib oleaut32.lib uuid.lib commctrl.lib "..\libpng\windows mobile 6 professional sdk (armv4i)\debug\libpng.lib" "..\zlib\windows mobile 6 professional sdk (armv4i)\debug\zlib.lib"  /SUBSYSTEM:WINDOWSCE,5.02 /VERBOSE:lib

链接器选项：

/Od /I "..\lib\zlib-1.2.7" /I "..\lib\lpng1512" /D "_DEBUG" /D "_WIN32_WCE=0x502" /D "UNDER_CE" /D "WIN32_PLATFORM_PSPC" /D "WINCE" /D "DEBUG" /D "_WINDOWS" /D "_USRDLL" /D "LIBPNG_EXPORTS" /D "ARM" /D "_ARM_" /D "_UNICODE" /D "UNICODE" /Gm /EHsc /MDd /fp:fast /GR- /Fo"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/" /Fd"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/vc80.pdb" /W3 /nologo /c /Zi /TC /QMFPE-

/Od /I "..\lib\lpng1512" /D "_DEBUG" /D "_WIN32_WCE=0x502" /D "UNDER_CE" /D "WIN32_PLATFORM_PSPC" /D "WINCE" /D "DEBUG" /D "_LIB" /D "ARM" /D "_ARM_" /D "_UNICODE" /D "UNICODE" /D "_WINDLL" /Gm /EHsc /MDd /fp:fast /GR- /Yu"stdafx.h" /Fp"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/libpngStreamWrap.pch" /Fo"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/" /Fd"Windows Mobile 6 Professional SDK (ARMV4I)\Debug/vc80.pdb" /W3 /nologo /c /Zi /TP

/OUT:"Windows Mobile 6 Professional SDK (ARMV4I)\Debug\libpngStreamWrap.dll" /NOLOGO /DLL /MANIFEST:NO /NODEFAULTLIB:"oldnames.lib" /DYNAMICBASE /NXCOMPAT /ERRORREPORT:PROMPT coredll.lib corelibc.lib ole32.lib oleaut32.lib uuid.lib commctrl.lib "..\libpng\windows mobile 6 professional sdk (armv4i)\debug\libpng.lib" "..\zlib\windows mobile 6 professional sdk (armv4i)\debug\zlib.lib"  /SUBSYSTEM:WINDOWSCE,5.02 /VERBOSE:lib

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最近在png mng实施列表中讨论了这一点 在sourceforge.net上（主题为libpng Visual Studio 2010项目）：

经过几次长时间的谷歌搜索，结果发现原因是 libpng调试配置文件“运行时库”设置未设置为 “多线程调试DLL”除外，但改为“多线程调试DLL” DLL”，它与发布版本中使用的配置文件相同

这是一个错误。这似乎是一个错误的手工编辑的结果 vcxproj项目文件-如果删除或删除了RuntimeLibrary元素 无效，将其设置为默认值，即DLL的/MD

它可以在libpng1.5中修复，但这将是一个API更改，并且 将破坏现有的、正在工作的libpng 1.5项目。因此我 我认为最好的办法是添加一个警告通知（可能是在 单独的文件（警告）到projects/vstudio，指出问题。 一旦人们知道设置是正确的，就很容易改变设置

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可能错误。

它们是从C运行时库的DLL版本导入的函数。为它们获取链接器错误将表明libpng编译错误。错误的头文件或错误的编译器设置（/MT vs/MD选项）。重建libpng并确保所有编译器设置与主项目匹配。发布了/MT和/MD选项的错误。是否可以发布编译器和链接器命令行？不过，我在Visual Studio 2008中工作。不管怎样，我最终还是把它全部建成了。稍后将发布详细信息。