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Difference between revisions of "News:GCC Update"
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|News Category=General | |News Category=General | ||
|Author=Oleg | |Author=Oleg | ||
|Publication Status= | |Publication Status=Published | ||
|Publication Date=2016/11/25 | |Publication Date=2016/11/25 | ||
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In addition, rebuilding of packages that linking against <code>libstdc++</code> with <code> revdep-rebuild</code> needed. This steps will perform rebuilding the list of packages that linked against <code>libstdc++.so.6</code>, a new version of standart library from gcc-5. This packages can be missing in @system set. | |||
{{console|body= | {{console|body= | ||
oleg2 # revdep-rebuild --library 'libstdc | oleg2 # revdep-rebuild --library 'libstdc++.so.6' -- --exclude gcc | ||
}} | }} | ||
[1] https://gcc.gnu.org/onlinedocs/libstdc%2B%2B/manual/using_dual_abi.html | [1] https://gcc.gnu.org/onlinedocs/libstdc%2B%2B/manual/using_dual_abi.html | ||
Latest revision as of 19:27, November 30, 2016
GCC Update
- Update to gcc-5.3.0 now available on both current and stable builds. Due to ABI changes [1], introduced with gcc-5.1, users need to perform additional steps with gcc upgrade:
root # emerge --sync root # emerge -u1 gcc
Now, after gcc update and if your box have multiple gcc versions installed, it is needed to switch to newly installed version with gcc-config. For example, to check installed version:
oleg2 # gcc-config -l [1] x86_64-pc-linux-gnu-4.9.3 * [2] x86_64-pc-linux-gnu-5.3.0 oleg2 #
Switch to new gcc by:
oleg2 # gcc-config 2 oleg2 # . /etc/profile
This step makes gcc-5.3.0 your default compiler. Now, as mentioned before, this version is ABI incompatible with gcc-4.9 and after updating following steps needed:
oleg2 # emerge -e @system --exclude gcc
In addition, rebuilding of packages that linking against libstdc++ with revdep-rebuild needed. This steps will perform rebuilding the list of packages that linked against libstdc++.so.6, a new version of standart library from gcc-5. This packages can be missing in @system set.
oleg2 # revdep-rebuild --library 'libstdc++.so.6' -- --exclude gcc
[1] https://gcc.gnu.org/onlinedocs/libstdc%2B%2B/manual/using_dual_abi.html