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Hello, |
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|
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On Fri, 12 Feb 2021, Jack wrote: |
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>On 2021.02.12 14:49, Walter Dnes wrote: |
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>> 64-bit Gentoo on a new 12-core machine. The build fails in the compile |
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>> phase. Switching makeopts from -j4 to -j1 didn't help. Build log is |
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>> attached. |
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>The error seems to be at linking: |
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> |
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>/usr/lib/gcc/x86_64-pc-linux-gnu/7.5.0/../../../../x86_64-pc-linux-gnu/bin/ld: |
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>/usr/lib64/libjsoncpp.so: undefined reference to |
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>`std::__cxx11::basic_ostringstream<char, std::char_traits<char>, |
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>std::allocator<char> >::basic_ostringstream()@GLIBCXX_3.4.26' |
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> |
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>/usr/lib64/libjsoncpp.so belongs to dev-libs/jsoncpp. cmake depends on |
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>>=dev-libs/jsoncpp-1.9.2-r2:0= |
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> |
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>I have 1.9.4 installed. (1.9.3 is the only other one I see in Portage.) Is |
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>it possible you have an older version, and the dep needs to be updated? |
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|
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I needs just to be recompiled, I think. With '-std=c++11' or later. |
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Search for |
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'undefined reference to std::__cxx11::basic_' |
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(no quotes) on your least untrusted search engine, or better, if your |
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search-engine supports the 'site:' parameter, for |
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'undefined reference to std::__cxx11::basic_ site:gentoo.org' |
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|
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AFAIR, there were both at least one news item and tons of |
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mails/forum-posts about this issue with 'std::__cxx11::basic.*string' |
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stuff. It's that C++ ABI change for all that string related stuff. It |
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all basically boils down to just recompile all your C++ libs using |
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some form of (basic_)string (and all stuff depending on those) using |
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the new cxx11 ABI. ISTR that was rather well communicated in the news |
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items and on this ML. And there's stuff on the wiki, e.g.: |
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https://wiki.gentoo.org/wiki/Upgrading_GCC |
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|
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ISTR there's more specific stuff, but that's the gist of it. Rebuild |
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what depends on libstdc++. IIRC: |
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|
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$ revdep-rebuild -v -p --library /usr/lib/libstdc++.so.5 |
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|
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(change /usr/lib/ to whatever matches your platform and don't forget |
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/usr/lib32 if you do multilib ;) |
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|
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>Also, might it be related to gcc version? I'm currently using 10.2.0-r5 |
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>~amd64. |
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|
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Nah. It's libstdc++ ;) |
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|
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HTH, |
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-dnh |
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|
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-- |
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The only languages that can comfortably be written with the repertoire of |
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US-ASCII happen to be Latin, Swahili, Hawaiian and American English without |
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most typographic frills. It is rumoured that there are more languages in the |
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world. -- Roman Czyborra |
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