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(Created page with "{{News |Summary=GCC Update |News Format=Extended |News Category=General |Author=Oleg |Publication Status=Draft |Publication Date=2016/11/25 }}") |
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|Publication Date=2016/11/25 | |Publication Date=2016/11/25 | ||
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* 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: | |||
{{console|body= | |||
# emerge --sync | |||
# 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 <code>gcc-config</code>. For example, to check installed version: | |||
{{console|body= | |||
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: | |||
{{console|body= | |||
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: | |||
{{console|body= | |||
oleg2 # emerge -e @system --exclude gcc | |||
}} | |||
Alternatively, rebuilding the packages could be achieved with <code> revdep-rebuild</code>: | |||
{{console|body= | |||
oleg2 # revdep-rebuild --library 'libstdc\+\+.so.6' -- --exclude gcc | |||
}} | |||
[1] https://gcc.gnu.org/onlinedocs/libstdc%2B%2B/manual/using_dual_abi.html | |||
Revision as of 16:08, November 25, 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
Alternatively, rebuilding the packages could be achieved with revdep-rebuild:
oleg2 # revdep-rebuild --library 'libstdc\+\+.so.6' -- --exclude gcc
[1] https://gcc.gnu.org/onlinedocs/libstdc%2B%2B/manual/using_dual_abi.html