Bug 331759 – sys-devel/libtool does not support new gcc-4.5 -flto option

• Status: RESOLVED DUPLICATE of bug 324107
• Product: Gentoo Linux

[Description David Carlos Manuelda 2010-08-09 11:49:23 UTC]

When trying to compile everything, I get a error message complaining that a file called xxxxxx.lto.o is missing!
For example, compiling mysql-5.1.49-r1:
x86_64-pc-linux-gnu-g++: /var/tmp/portage/dev-db/mysql-5.1.49-r1/temp/ccQZPul8.lto.o: No such file or directory

I'll attach full debugging output and emerge info.

Reproducible: Always

[Comment 1 David Carlos Manuelda 2010-08-09 11:50:13 UTC]

Created attachment 241965 [details]
compile log

This is the output log

[Comment 2 David Carlos Manuelda 2010-08-09 11:52:34 UTC]

Created attachment 241967 [details]
emerge --info output

emerge --info

[Comment 3 David Carlos Manuelda 2010-08-09 11:53:06 UTC]

Is this common or do I have missconfigured something, because it seems to compile at least nothing with -flto

[Comment 4 David Carlos Manuelda 2010-08-09 12:07:09 UTC]

I can't compile amarok either (and possibly I can't compile anything).
Am I wrong using it with -flto, is a gentoo issue?
Because it is strange that gcc folks release something that does not work at all.. I'm missed!

[Comment 5 Wormo (RETIRED) 2010-08-10 01:57:37 UTC]

As you probably know already, lto is a new feature to gcc 4.5 so you could easily be running into a gcc bug rather than a misconfiguration. For gcc 4.5.0 there were enough known issues that toolchain devs recommended not using lto -- assigning to toolchain team who can tell you whether lto is expected to work yet with gcc 4.5.1.

[Comment 6 SpanKY 2010-08-10 02:15:24 UTC]

pretty sure this is not a gcc bug.  i thought we already had a bug about this, but i cant find it ...

long story short: dont use -flto in your make.conf settings

[Comment 7 SpanKY 2010-08-10 02:16:38 UTC]

oop, found it ... it didnt have a cleaned up summary which is why i couldnt locate it ...

*** This bug has been marked as a duplicate of bug 324107 ***