[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 --- Comment #16 from Luke Dashjr --- GCC only supports defaults now?
[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 Andrew Pinski changed: What|Removed |Added Status|WAITING |RESOLVED Resolution|--- |WONTFIX --- Comment #15 from Andrew Pinski --- Right and mfunction-return=thunk was never the default in any GCC release, there was no ABI change techincally. It is only an ABI change because gentoo decided to turn it the default for glibc.
[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 --- Comment #14 from H.J. Lu --- (In reply to Luke Dashjr from comment #13) > I run Gentoo, so it compiled it for me (2.27) You should report it to Gentoo.
[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 --- Comment #13 from Luke Dashjr --- I run Gentoo, so it compiled it for me (2.27)
[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 --- Comment #12 from H.J. Lu --- (In reply to Luke Dashjr from comment #11) > Simply upgrading to GCC 8.2.0 failed due to the multiple-definition of > __x86_return_thunk, so I successfully built only the C compiler with the > non-thunking defaults; from there, I rebuilt glibc again without thunking, > then rebuilt the full GCC with thunking re-enabled, and glibc again with > thunking re-enabled. > > My most recent issue was with building distcc and libiberty.a, which I > solved by removing binutils-libs and installing it again from scratch (a > simple rebuild failed due to the multiple-definition of __x86_return_thunk > in the existing library). Where did you get your glibc?
[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 --- Comment #11 from Luke Dashjr --- Simply upgrading to GCC 8.2.0 failed due to the multiple-definition of __x86_return_thunk, so I successfully built only the C compiler with the non-thunking defaults; from there, I rebuilt glibc again without thunking, then rebuilt the full GCC with thunking re-enabled, and glibc again with thunking re-enabled. My most recent issue was with building distcc and libiberty.a, which I solved by removing binutils-libs and installing it again from scratch (a simple rebuild failed due to the multiple-definition of __x86_return_thunk in the existing library).
[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 --- Comment #10 from H.J. Lu --- (In reply to Luke Dashjr from comment #9) > Is there a solution or workaround for this? I already rebuilt glibc more > than once, but keep running into it... (GCC 8.2.0 on a system that was > mostly built by 7.3.0) What exactly have you done?
[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 Luke Dashjr changed: What|Removed |Added CC||luke-jr+gccbugs at utopios dot org --- Comment #9 from Luke Dashjr --- Is there a solution or workaround for this? I already rebuilt glibc more than once, but keep running into it... (GCC 8.2.0 on a system that was mostly built by 7.3.0)
[Bug target/85915] ABI incompatibility (multiple definition of `__x86_return_thunk') for static libraries, between GCC 7.3.0 and GCC >=7.4.0, caused by -mfunction-return=thunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85915 Arfrever Frehtes Taifersar Arahesis changed: What|Removed |Added Summary|ABI incompatibility |ABI incompatibility |(multiple definition of |(multiple definition of |`__x86_return_thunk') |`__x86_return_thunk') for |between GCC 7.3.0 and GCC |static libraries, between |>=7.4.0 caused by |GCC 7.3.0 and GCC >=7.4.0, |-mfunction-return=thunk |caused by ||-mfunction-return=thunk --- Comment #8 from Arfrever Frehtes Taifersar Arahesis --- It seems that this ABI incompatibility affects all static libraries, not just libc_nonshared.a.
