-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 02/03/2014 10:31 PM, Dave Johansen wrote: > On Sun, Feb 2, 2014 at 7:58 PM, Dave Johansen > <davejohan...@gmail.com <mailto:davejohan...@gmail.com>> wrote: > > The EL6 build of llvm 3.4 is currently in testing and it was just > pointed out that there's a potential issue with the build ( > https://admin.fedoraproject.org/updates/FEDORA-EPEL-2014-0264/llvm-3.4-5.el6 > > ). > > If you examine the build.log ( > http://kojipkgs.fedoraproject.org//work/tasks/593/6470593/build.log > > ) It looks like the include path is being included twice and that's > causing the warning about the invalid host type. Is there > something wrong with the .spec file? Or is there something I can do > to fix/prevent this issue? > > Thanks, Dave > > > I was able to get a hold of the original submitter of the issue and > the issue is because of the multiple paths that exist on EL6. > Here's his explanation and recommended solution: > >> $ echo /usr/lib/gcc/x86_64*/*/include >> /usr/lib/gcc/x86_64-redhat-linux/4.4.4/include > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/include >> >> EL6 originally had gcc-4.4.4 and gcc-4-4.7 still has the old >> path > included for compatibility. Because of the space inbetween > configure thinks /usr/lib/gcc/x86_64-redhat-linux/4.4.7/include is > a host type. >> >> The files in /usr/lib/gcc/x86_64-redhat-linux/4.4.7/include have > nothing to do with C++. Clang has own versions of these files in > /usr/lib/clang/3.4/include. >> >> Therefore it should just be >> --with-c-include-dirs=%{_includedir}, > which is also the default if you specify nothing. >> >> C++ headers and runtime libs from gcc are selected by clang at >> runtime: >> >> $ clang -v clang version 3.4 (tags/RELEASE_34/final) Target: >> x86_64-redhat-linux-gnu Thread model: posix Found candidate GCC >> installation: /usr/lib/gcc/x86_64-redhat-linux/4.4.4 Found >> candidate GCC installation: >> /usr/lib/gcc/x86_64-redhat-linux/4.4.7 Selected GCC installation: >> /usr/lib/gcc/x86_64-redhat-linux/4.4.7 > So my question is if the same sort of change also needs to be made > in the Fedora .spec file that the EL6 one is based on. > On Fedora there is no compatibility symlink; IIRC the 00with-c-include-dirs was added (by myself) because at the time LLVM and Clang's detection routines were less reliable (there was a list of GCC versions it knows about, and if the version installed is newer - as is likely at every Fedora cycle - it breaks, unless the include directory is manually specified)
I'm no longer routinely involved in LLVM maintenance, but agree that it might be worth re-checking the Fedora .spec. I'll try rebuilding Pure once the LLVM update lands - does Clang now ship a complete set of C++ headers as well? That was a sticking point earlier as the headers shipped by GCC in EL6 is too old for newer versions of LLVM-targeting apps. Best regards, - -- Michel Alexandre Salim Fedora Project Contributor: http://fedoraproject.org/ Email: sali...@fedoraproject.org | GPG key ID: A36A937A Jabber: hir...@jabber.ccc.de | IRC: michel-...@irc.freenode.net () ascii ribbon campaign - against html e-mail /\ www.asciiribbon.org - against proprietary attachments -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS8fOBAAoJEEr1VKujapN6zxkIAJly8nZFv353aA6LkPOEK5Uh qiZR0L2p0rfoaGmdw11+r24BGmmBjcZHdTpg+HS4GZxVrENF9dQYeVvVGLse6QJZ dlJAzL7u9oJZYF4YBr9vsJy9+fP7p0T0miHj12GZG+wqhBn0UItcYimwmlVpEat7 5UWMCWzAZckZPPFqzYbVwDtjkXObMumqY5cXy7uOEeTHa1HIsoiomnL3KeHwEdiF UHCqCsCDaAuYJy14i9U4JDC0Lt67uV/czVzstrBUN+CP7PfZZkDQvbYbPeCwrjxT RtosUNBPQQarnoLeDkFSUwlUv0Gxpc8y75dA2ZkzachAbxRlzWmTrRVdcgqt8xw= =yaSw -----END PGP SIGNATURE----- -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
