Can't compile with gcc 4.9

[underdoeg]

I was unable to compile codelite with gcc 4.9 on arch Linux 64bits. Tried with latest release and git version. Gcc 4.8 compiles ok.

The problem were several linker errors:

/home/phwhitfield/softwareSources/codelite-5.4/build-release/lib/libplugin.so: undefined reference to `wxCommandEvent::Clone() const'
collect2: error: ld returned 1 exit status

Arch bug report
https://aur.archlinux.org/packages/codelite/

Possible workaround is to disable -O3
https://aur.archlinux.org/packages/dolphin-emu-git/

[dghart]

Thank you for reporting this. A fedora user had mentioned it on #codelite a few days ago. It seems to be a gcc 4.9 'feature' to do with link-time optimisation, and is likely to affect many programs that link to wxGTK.

Possible workaround is to disable -O3

CodeLite uses -02 at present. Perhaps passing -fno-lto would be a workaround that doesn't lose other optimisations. Or, revert to gcc 4.8!

I don't have a gcc 4.9 system available for checking atm and, like over 7 billion other people, I don't really understand what's going wrong: is it the way the wxGTK libs were built, or something that CodeLite itself is doing wrong (perhaps with its plugins??), or what?

I hope the situation becomes clearer before gcc 4.9 becomes widespread. Meanwhile I'll leave this bug open as a reminder.

Regards,

David

[eranif]

Closed.
When we start building with GCC 4.9 we will probably encounter and fix this

[Alexpux]

This issue is related to:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61214

[cheese]

The above gcc issue has been fixed in 4.9.2.

[underdoeg]

Yes, git version compiles on my machine now