blocks|key|4395922|text|这是一个XCode+8错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4395923|在等待来自Apple的适当修复时，以下命令将从tbd文件中删除对缺失库的引用。|4395924|sudo+/usr/bin/sed+-i.backup+'s@/usr/lib/system/libsystem_symptoms.dylib$,+$\?@@'+\
++$(grep+-ril+/usr/lib/system/libsystem_symptoms.dylib+\
++++/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib)|code-block|syntax|javascript|4395925|我不知道它是否适用于所有类型的构建，但它修复了所有不适合我的东西。|4395926|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

This is an XCode 8 bug.

While waiting for a proper fix from Apple, the following command removes the reference to the missing library from the tbd files.

<pre><code>sudo /usr/bin/sed -i.backup 's@/usr/lib/system/libsystem_symptoms.dylib$, $\?@@' \
 $(grep -ril /usr/lib/system/libsystem_symptoms.dylib \
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib)
</code></pre>

I don't know if it will works for every kind of build, but it fixed everything was not working for me.

blocks|key|4396169|text|我使用的一个避免使用sudo的“修复”方法是简单地过滤掉-L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib标志。在GNU+makefile中，这可以使用filter-out命令来完成。因此，如果我构建一个LINK_LIBS变量，其中包含$(shell+xml2-config+--libs)，那么我可以使用以下命令过滤LINK_LIBS：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4396170|LINK_LIBS+:=+$(filter-out+-L$(shell+xcrun+--show-sdk-path)/usr/lib,+$(LINK_LIBS))|code-block|syntax|javascript|4396171|如果我只是使用xml2-config，我也可以在调用它时添加一个"--exec-prefix=/usr“参数：|4396172|c%2B%2B+myapp.cc+`xml2-config+--cflags`+`xml2-config+--exec-prefix=/usr+--libs`|4396173|我不知道从库搜索字符串中删除SDK路径可能会有什么潜在的副作用，但就目前而言，这些解决方案似乎适用于我的所有应用程序。|4396174|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

One "fix" that I've used, which avoids any use of sudo, is simply to filter out the -L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib flag. In a GNU makefile, this can be done with the filter-out command. So if I build a LINK_LIBS variable, which includes $(shell xml2-config --libs), then I can filter LINK_LIBS with the following command:

<pre><code>LINK_LIBS := $(filter-out -L$(shell xcrun --show-sdk-path)/usr/lib, $(LINK_LIBS))
</code></pre>

If I'm just using xml2-config, I can also just add a "--exec-prefix=/usr" argument when calling it:

<pre><code>c++ myapp.cc `xml2-config --cflags` `xml2-config --exec-prefix=/usr --libs`
</code></pre>

I don't know what potential side effects of removing the SDK path from the library search string might be, but for now, these solutions seem to work for all of my applications.

blocks|key|4396205|text|@mnencia答案可以删除对libsystem_symptomps.dylib的引用，但对于我使用OS+X失败。更改以下内容应该可以让它在OS+X上工作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4396206|sudo+/usr/bin/sed+-i.backup+-E+-e+'s@/usr/lib/system/libsystem_symptoms.dylib(,+)?@@'+\
$(grep+-ril+/usr/lib/system/libsystem_symptoms.dylib+\
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib)|code-block|syntax|javascript|4396207|希望这对Mac开发者有所帮助。|4396208|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

@mnencia answer works removing references to libsystem_symptomps.dylib, but failed for me using OS X. Change the following should allow it to work on OS X:

<pre><code>sudo /usr/bin/sed -i.backup -E -e 's@/usr/lib/system/libsystem_symptoms.dylib(, )?@@' \
$(grep -ril /usr/lib/system/libsystem_symptoms.dylib \
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib)
</code></pre>

Hope this helps Mac developers.

blocks|key|4396019|text|在Xcode8稳定之前，我保留Xcode7.3，重命名为|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4396020|/Applications/Xcode7.3.app/|offset|length|style|CODE|4396021|通常我使用的是Xcode8，它位于|4396022|/Applications/Xcode.app/|4396023|但是当遇到这样的错误时，我可以选择|4396024|sudo+xcode-select+-switch+/Applications/Xcode7.3.app/|4396025|这就解决了这个错误|4396026|ld:+file+not+found:+/usr/lib/system/libsystem_symptoms.dylib+for+architecture+x86_64|4396027|对我来说，在尝试安装R包时：|4396028|>+install.packages('clickstream')|4396029|entityMap^0|0|0|R|0|0|0|O|0|0|0|1H|0|0|0|2C|0|0|0|X|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@$D|11|E|12|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|13|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|14|8|@$D|15|E|16|F|G]]|9|@]|A|$]]|$1|L|3|M|5|6|7|17|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|18|8|@$D|19|E|1A|F|G]]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1B|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|1C|8|@$D|1D|E|1E|F|G]]|9|@]|A|$]]|$1|T|3|U|5|6|7|1F|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|1G|8|@$D|1H|E|1I|F|G]]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]]|Y|$]]

Until Xcode8 stabilizes, I retain Xcode7.3, renamed as

<code>/Applications/Xcode7.3.app/</code>

Generally I use Xcode8 which is in

<code>/Applications/Xcode.app/</code>

but when encountering errors such as this, I have the option to

<code>sudo xcode-select -switch /Applications/Xcode7.3.app/</code>

This cured the error

<code>ld: file not found: /usr/lib/system/libsystem_symptoms.dylib for architecture x86_64</code>

for me, when attempting to install an R package:

<code>&gt; install.packages('clickstream')</code>

blocks|key|4396050|text|对于那些不喜欢从不同位置剥离对libsystem_symptoms.dylib的引用的人，我想出了另一个与删除引用相反的解决方案--在/usr/lib/system中添加一个假的空libsystem_symptoms.dylib！|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4396051|mkdir+~/src/libempty
cd+~/src/libempty
touch+empty.c
cc+-dynamiclib+empty.c+-o+libempty.dylib
sudo+cp+libempty.dylib+/usr/local/lib/libempty.dylib
cd+/usr/lib/system
sudo+ln+-s+/usr/local/lib/libempty.dylib+libsystem_symptoms.dylib|code-block|syntax|javascript|4396052|除了..。由于OS+/macOS+System+Integrity+Protection的原因，最后一步不起作用。|4396053|显然，有不止一种方法可以解决这个问题；您可以使用csrutil和重新启动来禁用它(请参阅问题Operation+Not+Permitted+when+on+root+El+capitan)。我真的不想禁用它(或者忘记重新打开它)，所以我启动到recovery+mode，然后打开一个终端窗口，以这种方式完成作业：|4396054|cd+/Volumes
cd+MyHardDrive
cd+usr/lib/system
ln+-s+../../local/lib/libempty.dylib+libsystem_symptoms.dylib|4396055|在此之前，我试图在El+Capitan上构建Zlib9.6，并且在检查PostgreSQL或Zlib库时，在configure步骤中遇到了链接器错误("ld:+file+not+found:+/usr/lib/system/libsystem_symptoms.dylib")。这样做之后，PostgreSQL就可以顺利地进行配置和构建了！|4396056|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/library/content/documentation/Security/Conceptual/System_Integrity_Protection_Guide/ConfiguringSystemIntegrityProtection/ConfiguringSystemIntegrityProtection.html|1|https://stackoverflow.com/questions/32659348/operation-not-permitted-when-on-root-el-capitan-rootless-disabled|2|https://support.apple.com/en-us/HT201314^0|F|O|1V|F|2I|O|0|0|H|R|0|0|O|7|1A|1B|1|3D|D|2|0|0|1I|9|23|1Q|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|C]|$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1C|8|@]|D|@$9|1D|A|1E|1|1F]]|E|$]]|$1|M|3|N|5|6|7|1G|8|@$9|1H|A|1I|B|C]]|D|@$9|1J|A|1K|1|1L]|$9|1M|A|1N|1|1O]]|E|$]]|$1|O|3|P|5|H|7|1P|8|@]|D|@]|E|$I|J]]|$1|Q|3|R|5|6|7|1Q|8|@$9|1R|A|1S|B|C]|$9|1T|A|1U|B|C]]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1V|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]|10|$5|V|W|X|E|$Y|11]]|12|$5|V|W|X|E|$Y|13]]]]

For anyone uncomfortable with stripping out references to <code>libsystem_symptoms.dylib</code> from various locations, I came up with another solution that's the opposite of removing references -- adding a fake empty <code>libsystem_symptoms.dylib</code> in <code>/usr/lib/system</code>! 

<pre><code>mkdir ~/src/libempty
cd ~/src/libempty
touch empty.c
cc -dynamiclib empty.c -o libempty.dylib
sudo cp libempty.dylib /usr/local/lib/libempty.dylib
cd /usr/lib/system
sudo ln -s /usr/local/lib/libempty.dylib libsystem_symptoms.dylib
</code></pre>

Except... that last step doesn't work because of OS X/macOS <a href="https://developer.apple.com/library/content/documentation/Security/Conceptual/System_Integrity_Protection_Guide/ConfiguringSystemIntegrityProtection/ConfiguringSystemIntegrityProtection.html" rel="nofollow noreferrer">System Integrity Protection</a>. 

There's apparently more than one way of getting around that; you can disable it using <code>csrutil</code> and rebooting (see the question <a href="https://stackoverflow.com/questions/32659348/operation-not-permitted-when-on-root-el-capitan-rootless-disabled">Operation Not Permitted when on root El capitan</a>). I don't really want to disable it (or forget to turn it back on), so I booted into <a href="https://support.apple.com/en-us/HT201314" rel="nofollow noreferrer">recovery mode</a>, and then opened a terminal window and finished the job this way:

<pre><code>cd /Volumes
cd MyHardDrive
cd usr/lib/system
ln -s ../../local/lib/libempty.dylib libsystem_symptoms.dylib
</code></pre>

Before doing this, I was trying to build PostgreSQL 9.6 on El Capitan, and was getting that linker error (<code>"ld: file not found: /usr/lib/system/libsystem_symptoms.dylib"</code>) at the <code>configure</code> step when it checked for the readline or zlib libraries. After doing this, PostgreSQL configured and built smoothly!

blocks|key|4396292|text|https://github.com/igraph/rigraph/issues/173上geoHeil的最终更新帮助我解决了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4396293|就像这两个步骤一样简单：|4396294|Terminal>+brew+uninstall+suite-sparse+--ignore-dependencies
R>+install.packages("igraph")|code-block|syntax|javascript|4396295|ignore-dependencies是必要的，因为Octave依赖于suite-sparse。|style|CODE|4396296|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/igraph/rigraph/issues/173^0|0|18|0|0|0|0|0|J|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|12|8|@$A|13|B|14|M|N]]|9|@]|C|$]]|$1|O|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

The final update from geoHeil on <a href="https://github.com/igraph/rigraph/issues/173" rel="nofollow noreferrer">https://github.com/igraph/rigraph/issues/173</a> helped me resolve this issue on OSX.

It was as simple as these two steps:

<pre><code>Terminal&gt; brew uninstall suite-sparse --ignore-dependencies
R&gt; install.packages("igraph")
</code></pre>

<code>ignore-dependencies</code> was necessary because Octave had a dependency on suite-sparse.

I just updated to Xcode 8, and I can no longer build xml2-based applications. If I build a simple file and try to build it as follows:

<pre><code>c++ myapp.cc `xml2-config --cflags` `xml2-config --libs`
</code></pre>

...I get the following error message:

<pre><code>ld: file not found: /usr/lib/system/libsystem_symptoms.dylib for architecture x86_64
</code></pre>

It doesn't matter what's in myapp.cc (mine is just a main routine that returns 0). The root problem seems to be that Apple removed /usr/lib/system/libsystem_symptoms.dylib in Xcode 8, but many of the .tbd files in /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/lib still point to it. Has anyone else run into a problem like this?

libsystem_symptoms.dylib missing in Xcode 8

我刚刚更新到Xcode8，不能再构建基于xml2的应用程序。如果我构建一个简单的文件并尝试构建它，如下所示：c++ myapp.cc `xml2-config --cflags` `xml2-config --libs`...I收到以下错误消息：ld: file not found: /usr/lib/system/l...

问Xcode8中缺少libsystem_symptoms.dylib
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