also possibly a problem with sys-devel/gcc-6.*.0; the url listed explains the problem pretty well, but in brief there are some definitions which differ enough between the two to keep it from compiling. cfns.gperf: In function ‘const char* libc_name_p(const char*, unsigned int)’: cfns.gperf:101:1: error: ‘const char* libc_name_p(const char*, unsigned int)’ redeclared inline with ‘gnu_inline’ attribute cfns.gperf:26:14: note: ‘const char* libc_name_p(const char*, unsigned int)’ previously declared here Reproducible: Always Steps to Reproduce: 1. ./bootstrap-prefix.sh 2. follow prompts 3. get to sys-devel/gcc-5.3.0::gentoo_prefix 4. fail Actual Results: gcc compilation halts due to the above declaration issues. Expected Results: gcc compilation to continue until completion, and then carrying on with the process of bootstrapping a prefix. This is a fairly trivial fix; I will be attaching a patch that will fix it for gcc-5.3.0 as presented by ::gentoo_prefix, or barring that you can update gcc in the prefix overlay to at least sys-devel/gcc-5.4.0, which does not appear to require this patch based on my inspection.
Created attachment 496336 [details, diff] a rebased version of https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=233572
Created attachment 496338 [details] build.log for gcc-6.4.0 Confirmed to affect building with gcc-6.4.0 as well.
Created attachment 496340 [details] build.log for gcc-7.1.0
Well, this is the very reason I have gcc-4.9 still selected here...
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/proj/prefix.git/commit/?id=aedebf46c4e5e9c88097e000e7fc9133a5e51c3b commit aedebf46c4e5e9c88097e000e7fc9133a5e51c3b Author: Michael Haubenwallner <haubi@gentoo.org> AuthorDate: 2017-09-25 16:39:25 +0000 Commit: Michael Haubenwallner <haubi@gentoo.org> CommitDate: 2017-09-25 16:39:25 +0000 sys-devel/gcc: build 5.3.0 with 7.1.0 host Closes: https://bugs.gentoo.org/631976 Package-Manager: Portage-2.3.10-prefix, Repoman-2.3.3 RepoMan-Options: --force sys-devel/gcc/files/gcc-5.3.0-libc_name_p.patch | 111 ++++++++++++++++++++++++ sys-devel/gcc/gcc-5.3.0.ebuild | 1 + 2 files changed, 112 insertions(+)
(In reply to hanetzer from comment #1) Thanks a lot for the patch!
